Add organizations module surface

2026-07-10 17:33:53 +02:00
parent 34133ba9cd
commit ad2561b50f
22 changed files with 3284 additions and 35 deletions
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -3,7 +3,7 @@
 ## Scope

 This repository owns the canonical GovOPlaN organizational model: tenant-local
-organization units, hierarchy, functions, and account-held function
+organization units, parallel structures, functions, and identity-held function
 assignments.

 The module describes responsibility in the institution. It does not decide
@@ -14,11 +14,16 @@ facts to roles, rights, permission decisions, and explainability.

 - Depend on kernel contracts from `govoplan-core`.
 - Depend on `govoplan-tenancy` for tenant ownership.
- Do not import access, identity, postbox, workflow, or portal internals.
+- Depend on identity only through kernel capabilities when resolving account to
+  identity relationships.
+- Do not import access, admin, identity, postbox, workflow, or portal internals.
 - Expose integration through manifests, capabilities, API routes, events, and
  typed DTOs.
 - Treat function assignment as organizational responsibility, not as a login
  permission by itself.
+- Keep the organization modelling UI as a standalone module route. Admin-only
+  organization controls should be contributed by this module through the
+  platform `admin.sections` WebUI capability.

 ## Local Workflow

--- a/README.md
+++ b/README.md
@@ -3,29 +3,35 @@
 `govoplan-organizations` is the canonical organizational model module for
 GovOPlaN.

-It owns organization units, organizational hierarchy, functions, and
-account-held function assignments. These facts exist independently of
-authentication and authorization. IDM can import them, Identity can link them
-to people/accounts, and Access can project them into roles and rights.
+It owns organization unit types, organization structures, concrete units,
+functions, and identity-held function assignments. These facts exist
+independently of authentication and authorization. Identity links people to
+accounts, and Access projects organization facts into roles and rights.

 ## Boundary

 Organizations owns:

- tenant-local organization units
- parent/child organizational hierarchy
+- tenant-local organization unit types
+- tenant-local concrete organization units
+- parallel organization structures and relation types
 - functions in organization units
 - whether a function may be delegated or used for acting in place
- account-held function assignments
+- identity-held function assignments, optionally constrained to one account
 - whether an assignment applies only to one unit or also to subunits

 Organizations does not own:

- login accounts or identity lifecycle
+- login accounts, identity lifecycle, or account linking
 - role and permission evaluation
 - postboxes, workflows, portals, files, or cases
 - external IDM connector internals

+The WebUI exposed by this repository is a normal module UI at
+`/organizations`. Admin-only controls are contributed by this module through the
+platform `admin.sections` WebUI capability, so the admin shell can show them
+when the organizations module is active.
+
 ## Module Contract

 The module registers the `organizations.directory` capability from
--- a/docs/ORGANIZATION_MODEL.md
+++ b/docs/ORGANIZATION_MODEL.md
@@ -5,19 +5,28 @@ The organization model answers where responsibility lives.
 ## Layers

 - Tenant: the administrative space.
- Organization unit: a department, office, committee, service desk, school,
-  institute, or other structural unit.
+- Organization unit type: an abstract type such as faculty, institute,
+  committee, department, team, service desk, or legal entity.
+- Organization structure: a named way to look at the institution. Several
+  structures may exist in parallel, for example employer hierarchy, academic
+  structure, committees, memberships, or classifications.
+- Relation type: the permitted edge between units inside a structure.
+- Organization unit: a concrete department, office, committee, service desk,
+  school, institute, or other unit.
 - Function: a named responsibility in an organization unit, such as clerk,
  reviewer, approver, committee secretary, intake desk, or resource manager.
- Function assignment: an account holds a function in an organization unit,
-  optionally for that unit and all subunits.
+- Function assignment: an identity holds a function in an organization unit,
+  optionally for that unit and all subunits. The assignment may be constrained
+  to a specific account, but the real-world responsibility belongs to the
+  identity.

 ## Boundary With Identity

-Organization assignments refer to account and identity IDs, but this module
-does not own login accounts or identity lifecycle. `govoplan-identity` owns the
-identity/account directory. The organization module only records that an
-account or identity currently holds an organizational function.
+Organization assignments refer to identity IDs and may optionally carry account
+IDs for account-specific exercise of a function. This module does not own login
+accounts, identity lifecycle, or account linking. `govoplan-identity` owns the
+identity/account directory. The organization module records that an identity
+currently holds an organizational function.

 ## Boundary With Access

@@ -28,6 +37,13 @@ enforcement, and explain responses.
 This separation keeps the institution model stable even when authorization
 policy changes.

+## UI Boundary
+
+The organization workspace at `/organizations` is the primary module UI for
+modelling concrete units, structures, functions, and assignments. Admin-only
+organization controls are still owned by this module, but are contributed to the
+platform admin shell through the `admin.sections` WebUI capability.
+
 ## Boundary With IDM

 `govoplan-idm` may import organization units, functions, and assignments from
--- a/package.json
+++ b/package.json
@@ -0,0 +1,36 @@
+{
+  "name": "@govoplan/organizations-webui",
+  "version": "0.1.6",
+  "private": true,
+  "type": "module",
+  "main": "webui/src/index.ts",
+  "module": "webui/src/index.ts",
+  "types": "webui/src/index.ts",
+  "exports": {
+    ".": {
+      "types": "./webui/src/index.ts",
+      "import": "./webui/src/index.ts"
+    },
+    "./styles/organizations.css": "./webui/src/styles/organizations.css"
+  },
+  "files": [
+    "webui/src",
+    "README.md",
+    "LICENSE"
+  ],
+  "peerDependencies": {
+    "@govoplan/core-webui": "^0.1.6",
+    "@vitejs/plugin-react": "^4.3.4",
+    "lucide-react": "^1.23.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
+    "react-router-dom": "^7.1.1",
+    "typescript": "^5.7.2",
+    "vite": "^6.0.6"
+  },
+  "peerDependenciesMeta": {
+    "@govoplan/core-webui": {
+      "optional": true
+    }
+  }
+}
--- a/src/govoplan_organizations/backend/api/init.py
+++ b/src/govoplan_organizations/backend/api/init.py
@@ -0,0 +1 @@
+"""Organizations API package."""
--- a/src/govoplan_organizations/backend/api/v1/init.py
+++ b/src/govoplan_organizations/backend/api/v1/init.py
@@ -0,0 +1 @@
+"""Organizations API v1 package."""
--- a/src/govoplan_organizations/backend/api/v1/routes.py
+++ b/src/govoplan_organizations/backend/api/v1/routes.py
@@ -0,0 +1,720 @@
+from __future__ import annotations
+
+import re
+from typing import Any, TypeVar
+
+from fastapi import APIRouter, Depends, HTTPException, status
+from sqlalchemy.exc import IntegrityError
+from sqlalchemy.orm import Session
+
+from govoplan_core.auth import ApiPrincipal, require_any_scope
+from govoplan_core.db.session import get_session
+from govoplan_organizations.backend.db.models import (
+    OrganizationFunction,
+    OrganizationFunctionAssignment,
+    OrganizationFunctionType,
+    OrganizationRelation,
+    OrganizationRelationType,
+    OrganizationStructure,
+    OrganizationUnit,
+    OrganizationUnitType,
+)
+
+from .schemas import (
+    FunctionAssignmentCreateRequest,
+    FunctionAssignmentUpdateRequest,
+    FunctionCreateRequest,
+    FunctionTypeCreateRequest,
+    FunctionTypeUpdateRequest,
+    FunctionUpdateRequest,
+    OrganizationFunctionAssignmentItem,
+    OrganizationFunctionItem,
+    OrganizationFunctionTypeItem,
+    OrganizationModelResponse,
+    OrganizationRelationItem,
+    OrganizationRelationTypeItem,
+    OrganizationStructureItem,
+    OrganizationUnitItem,
+    OrganizationUnitTypeItem,
+    RelationCreateRequest,
+    RelationTypeCreateRequest,
+    RelationTypeUpdateRequest,
+    RelationUpdateRequest,
+    StructureCreateRequest,
+    StructureUpdateRequest,
+    UnitCreateRequest,
+    UnitTypeCreateRequest,
+    UnitTypeUpdateRequest,
+    UnitUpdateRequest,
+)
+
+
+router = APIRouter(prefix="/organizations", tags=["organizations"])
+
+ORG_READ_SCOPES = (
+    "organizations:model:read",
+    "organizations:unit:read",
+    "organizations:function:read",
+    "admin:settings:read",
+)
+ORG_MODEL_WRITE_SCOPES = ("organizations:model:write",)
+ORG_UNIT_WRITE_SCOPES = ("organizations:unit:write",)
+ORG_FUNCTION_WRITE_SCOPES = ("organizations:function:write",)
+ORG_ASSIGN_SCOPES = ("organizations:function:assign",)
+SLUG_RE = re.compile(r"[^a-z0-9]+")
+
+ModelT = TypeVar("ModelT")
+
+
+def _slug(value: str | None, fallback: str) -> str:
+    source = value or fallback
+    normalized = SLUG_RE.sub("-", source.strip().casefold()).strip("-")
+    return normalized[:100] or "item"
+
+
+def _tenant_id(principal: ApiPrincipal) -> str:
+    return principal.tenant_id
+
+
+def _not_found(label: str) -> HTTPException:
+    return HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=f"{label} not found")
+
+
+def _conflict(message: str) -> HTTPException:
+    return HTTPException(status_code=status.HTTP_409_CONFLICT, detail=message)
+
+
+def _invalid(message: str) -> HTTPException:
+    return HTTPException(status_code=status.HTTP_422_UNPROCESSABLE_CONTENT, detail=message)
+
+
+def _get_tenant_row(session: Session, model: type[ModelT], item_id: str, tenant_id: str, label: str) -> ModelT:
+    item = session.get(model, item_id)
+    if item is None or getattr(item, "tenant_id") != tenant_id:
+        raise _not_found(label)
+    return item
+
+
+def _ensure_optional_unit_type(session: Session, tenant_id: str, unit_type_id: str | None) -> None:
+    if unit_type_id is None:
+        return
+    _get_tenant_row(session, OrganizationUnitType, unit_type_id, tenant_id, "Organization unit type")
+
+
+def _ensure_optional_structure(session: Session, tenant_id: str, structure_id: str | None) -> None:
+    if structure_id is None:
+        return
+    _get_tenant_row(session, OrganizationStructure, structure_id, tenant_id, "Organization structure")
+
+
+def _ensure_unique_slug(session: Session, model: type, tenant_id: str, slug: str, *, exclude_id: str | None = None) -> None:
+    query = session.query(model).filter(model.tenant_id == tenant_id, model.slug == slug)
+    if exclude_id is not None:
+        query = query.filter(model.id != exclude_id)
+    if query.count():
+        raise _conflict(f"Slug already exists in this tenant: {slug}")
+
+
+def _commit(session: Session, item: ModelT) -> ModelT:
+    try:
+        session.commit()
+    except IntegrityError as exc:
+        session.rollback()
+        raise _conflict("The organization model change conflicts with existing data.") from exc
+    session.refresh(item)
+    return item
+
+
+def _item_unit_type(item: OrganizationUnitType) -> OrganizationUnitTypeItem:
+    return OrganizationUnitTypeItem(**_row_fields(item))
+
+
+def _item_structure(item: OrganizationStructure) -> OrganizationStructureItem:
+    return OrganizationStructureItem(**_row_fields(item))
+
+
+def _item_relation_type(item: OrganizationRelationType) -> OrganizationRelationTypeItem:
+    return OrganizationRelationTypeItem(**_row_fields(item))
+
+
+def _item_unit(item: OrganizationUnit) -> OrganizationUnitItem:
+    return OrganizationUnitItem(**_row_fields(item))
+
+
+def _item_relation(item: OrganizationRelation) -> OrganizationRelationItem:
+    return OrganizationRelationItem(**_row_fields(item))
+
+
+def _item_function_type(item: OrganizationFunctionType) -> OrganizationFunctionTypeItem:
+    return OrganizationFunctionTypeItem(**_row_fields(item))
+
+
+def _item_function(item: OrganizationFunction) -> OrganizationFunctionItem:
+    return OrganizationFunctionItem(**_row_fields(item))
+
+
+def _item_assignment(item: OrganizationFunctionAssignment) -> OrganizationFunctionAssignmentItem:
+    return OrganizationFunctionAssignmentItem(**_row_fields(item))
+
+
+def _row_fields(item: object) -> dict[str, Any]:
+    keys = [column.name for column in item.__table__.columns]  # type: ignore[attr-defined]
+    return {key: getattr(item, key) for key in keys}
+
+
+def _apply_slugged_update(session: Session, item: object, payload: object, tenant_id: str, model: type) -> None:
+    fields = payload.model_fields_set  # type: ignore[attr-defined]
+    if "slug" in fields:
+        slug = _slug(getattr(payload, "slug"), getattr(item, "name", "item"))
+        _ensure_unique_slug(session, model, tenant_id, slug, exclude_id=getattr(item, "id"))
+        setattr(item, "slug", slug)
+    if "name" in fields:
+        value = getattr(payload, "name")
+        if value is None:
+            raise _invalid("Name cannot be empty.")
+        setattr(item, "name", value.strip())
+    if "description" in fields:
+        setattr(item, "description", getattr(payload, "description"))
+    if "is_active" in fields:
+        value = getattr(payload, "is_active")
+        if value is None:
+            raise _invalid("Active state cannot be empty.")
+        setattr(item, "is_active", value)
+    if "settings" in fields:
+        value = getattr(payload, "settings")
+        if value is None:
+            raise _invalid("Settings cannot be empty.")
+        setattr(item, "settings", value)
+
+
+@router.get("/model", response_model=OrganizationModelResponse)
+def get_organization_model(
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_READ_SCOPES)),
+) -> OrganizationModelResponse:
+    tenant_id = _tenant_id(principal)
+    return OrganizationModelResponse(
+        unit_types=[_item_unit_type(item) for item in session.query(OrganizationUnitType).filter(OrganizationUnitType.tenant_id == tenant_id).order_by(OrganizationUnitType.name.asc()).all()],
+        structures=[_item_structure(item) for item in session.query(OrganizationStructure).filter(OrganizationStructure.tenant_id == tenant_id).order_by(OrganizationStructure.name.asc()).all()],
+        relation_types=[_item_relation_type(item) for item in session.query(OrganizationRelationType).filter(OrganizationRelationType.tenant_id == tenant_id).order_by(OrganizationRelationType.name.asc()).all()],
+        units=[_item_unit(item) for item in session.query(OrganizationUnit).filter(OrganizationUnit.tenant_id == tenant_id).order_by(OrganizationUnit.name.asc()).all()],
+        relations=[_item_relation(item) for item in session.query(OrganizationRelation).filter(OrganizationRelation.tenant_id == tenant_id).order_by(OrganizationRelation.created_at.asc()).all()],
+        function_types=[_item_function_type(item) for item in session.query(OrganizationFunctionType).filter(OrganizationFunctionType.tenant_id == tenant_id).order_by(OrganizationFunctionType.name.asc()).all()],
+        functions=[_item_function(item) for item in session.query(OrganizationFunction).filter(OrganizationFunction.tenant_id == tenant_id).order_by(OrganizationFunction.name.asc()).all()],
+        function_assignments=[_item_assignment(item) for item in session.query(OrganizationFunctionAssignment).filter(OrganizationFunctionAssignment.tenant_id == tenant_id).order_by(OrganizationFunctionAssignment.created_at.asc()).all()],
+    )
+
+
+@router.post("/unit-types", response_model=OrganizationUnitTypeItem, status_code=status.HTTP_201_CREATED)
+def create_unit_type(
+    payload: UnitTypeCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationUnitTypeItem:
+    tenant_id = _tenant_id(principal)
+    slug = _slug(payload.slug, payload.name)
+    _ensure_unique_slug(session, OrganizationUnitType, tenant_id, slug)
+    item = OrganizationUnitType(tenant_id=tenant_id, slug=slug, name=payload.name.strip(), description=payload.description, is_active=payload.is_active, settings=payload.settings)
+    session.add(item)
+    return _item_unit_type(_commit(session, item))
+
+
+@router.patch("/unit-types/{item_id}", response_model=OrganizationUnitTypeItem)
+def update_unit_type(
+    item_id: str,
+    payload: UnitTypeUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationUnitTypeItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationUnitType, item_id, tenant_id, "Organization unit type")
+    _apply_slugged_update(session, item, payload, tenant_id, OrganizationUnitType)
+    return _item_unit_type(_commit(session, item))
+
+
+@router.post("/structures", response_model=OrganizationStructureItem, status_code=status.HTTP_201_CREATED)
+def create_structure(
+    payload: StructureCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationStructureItem:
+    tenant_id = _tenant_id(principal)
+    slug = _slug(payload.slug, payload.name)
+    _ensure_unique_slug(session, OrganizationStructure, tenant_id, slug)
+    item = OrganizationStructure(tenant_id=tenant_id, slug=slug, name=payload.name.strip(), description=payload.description, structure_kind=payload.structure_kind, is_active=payload.is_active, settings=payload.settings)
+    session.add(item)
+    return _item_structure(_commit(session, item))
+
+
+@router.patch("/structures/{item_id}", response_model=OrganizationStructureItem)
+def update_structure(
+    item_id: str,
+    payload: StructureUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationStructureItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationStructure, item_id, tenant_id, "Organization structure")
+    _apply_slugged_update(session, item, payload, tenant_id, OrganizationStructure)
+    if "structure_kind" in payload.model_fields_set:
+        if payload.structure_kind is None:
+            raise _invalid("Structure kind cannot be empty.")
+        item.structure_kind = payload.structure_kind
+    return _item_structure(_commit(session, item))
+
+
+@router.post("/relation-types", response_model=OrganizationRelationTypeItem, status_code=status.HTTP_201_CREATED)
+def create_relation_type(
+    payload: RelationTypeCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationRelationTypeItem:
+    tenant_id = _tenant_id(principal)
+    _ensure_optional_structure(session, tenant_id, payload.structure_id)
+    _ensure_optional_unit_type(session, tenant_id, payload.source_unit_type_id)
+    _ensure_optional_unit_type(session, tenant_id, payload.target_unit_type_id)
+    slug = _slug(payload.slug, payload.name)
+    _ensure_unique_slug(session, OrganizationRelationType, tenant_id, slug)
+    item = OrganizationRelationType(
+        tenant_id=tenant_id,
+        structure_id=payload.structure_id,
+        slug=slug,
+        name=payload.name.strip(),
+        description=payload.description,
+        source_unit_type_id=payload.source_unit_type_id,
+        target_unit_type_id=payload.target_unit_type_id,
+        is_hierarchical=payload.is_hierarchical,
+        allow_cycles=payload.allow_cycles,
+        is_active=payload.is_active,
+        settings=payload.settings,
+    )
+    session.add(item)
+    return _item_relation_type(_commit(session, item))
+
+
+@router.patch("/relation-types/{item_id}", response_model=OrganizationRelationTypeItem)
+def update_relation_type(
+    item_id: str,
+    payload: RelationTypeUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationRelationTypeItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationRelationType, item_id, tenant_id, "Organization relation type")
+    _apply_slugged_update(session, item, payload, tenant_id, OrganizationRelationType)
+    fields = payload.model_fields_set
+    if "structure_id" in fields:
+        _ensure_optional_structure(session, tenant_id, payload.structure_id)
+        item.structure_id = payload.structure_id
+    if "source_unit_type_id" in fields:
+        _ensure_optional_unit_type(session, tenant_id, payload.source_unit_type_id)
+        item.source_unit_type_id = payload.source_unit_type_id
+    if "target_unit_type_id" in fields:
+        _ensure_optional_unit_type(session, tenant_id, payload.target_unit_type_id)
+        item.target_unit_type_id = payload.target_unit_type_id
+    for field in ("is_hierarchical", "allow_cycles"):
+        if field in fields:
+            value = getattr(payload, field)
+            if value is None:
+                raise _invalid(f"{field} cannot be empty.")
+            setattr(item, field, value)
+    return _item_relation_type(_commit(session, item))
+
+
+@router.post("/units", response_model=OrganizationUnitItem, status_code=status.HTTP_201_CREATED)
+def create_unit(
+    payload: UnitCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_UNIT_WRITE_SCOPES)),
+) -> OrganizationUnitItem:
+    tenant_id = _tenant_id(principal)
+    _ensure_optional_unit_type(session, tenant_id, payload.unit_type_id)
+    if payload.parent_id is not None:
+        _get_tenant_row(session, OrganizationUnit, payload.parent_id, tenant_id, "Parent organization unit")
+    slug = _slug(payload.slug, payload.name)
+    _ensure_unique_slug(session, OrganizationUnit, tenant_id, slug)
+    item = OrganizationUnit(tenant_id=tenant_id, unit_type_id=payload.unit_type_id, parent_id=payload.parent_id, slug=slug, name=payload.name.strip(), description=payload.description, is_active=payload.is_active, settings=payload.settings)
+    session.add(item)
+    return _item_unit(_commit(session, item))
+
+
+@router.patch("/units/{item_id}", response_model=OrganizationUnitItem)
+def update_unit(
+    item_id: str,
+    payload: UnitUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_UNIT_WRITE_SCOPES)),
+) -> OrganizationUnitItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationUnit, item_id, tenant_id, "Organization unit")
+    _apply_slugged_update(session, item, payload, tenant_id, OrganizationUnit)
+    if "unit_type_id" in payload.model_fields_set:
+        _ensure_optional_unit_type(session, tenant_id, payload.unit_type_id)
+        item.unit_type_id = payload.unit_type_id
+    if "parent_id" in payload.model_fields_set:
+        if payload.parent_id == item.id:
+            raise _invalid("An organization unit cannot be its own parent.")
+        if payload.parent_id is not None:
+            _get_tenant_row(session, OrganizationUnit, payload.parent_id, tenant_id, "Parent organization unit")
+        item.parent_id = payload.parent_id
+    return _item_unit(_commit(session, item))
+
+
+@router.post("/relations", response_model=OrganizationRelationItem, status_code=status.HTTP_201_CREATED)
+def create_relation(
+    payload: RelationCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_UNIT_WRITE_SCOPES)),
+) -> OrganizationRelationItem:
+    tenant_id = _tenant_id(principal)
+    structure, relation_type, source, target = _validated_relation_parts(
+        session,
+        tenant_id,
+        structure_id=payload.structure_id,
+        relation_type_id=payload.relation_type_id,
+        source_unit_id=payload.source_unit_id,
+        target_unit_id=payload.target_unit_id,
+    )
+    _validate_relation_edge(session, tenant_id, structure, relation_type, source, target)
+    item = OrganizationRelation(
+        tenant_id=tenant_id,
+        structure_id=structure.id,
+        relation_type_id=relation_type.id,
+        source_unit_id=source.id,
+        target_unit_id=target.id,
+        valid_from=payload.valid_from,
+        valid_until=payload.valid_until,
+        is_active=payload.is_active,
+        settings=payload.settings,
+    )
+    session.add(item)
+    return _item_relation(_commit(session, item))
+
+
+@router.patch("/relations/{item_id}", response_model=OrganizationRelationItem)
+def update_relation(
+    item_id: str,
+    payload: RelationUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_UNIT_WRITE_SCOPES)),
+) -> OrganizationRelationItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationRelation, item_id, tenant_id, "Organization relation")
+    structure_id = payload.structure_id if "structure_id" in payload.model_fields_set else item.structure_id
+    relation_type_id = payload.relation_type_id if "relation_type_id" in payload.model_fields_set else item.relation_type_id
+    source_unit_id = payload.source_unit_id if "source_unit_id" in payload.model_fields_set else item.source_unit_id
+    target_unit_id = payload.target_unit_id if "target_unit_id" in payload.model_fields_set else item.target_unit_id
+    if structure_id is None or relation_type_id is None or source_unit_id is None or target_unit_id is None:
+        raise _invalid("Relation structure, type, source, and target are required.")
+    structure, relation_type, source, target = _validated_relation_parts(
+        session,
+        tenant_id,
+        structure_id=structure_id,
+        relation_type_id=relation_type_id,
+        source_unit_id=source_unit_id,
+        target_unit_id=target_unit_id,
+    )
+    _validate_relation_edge(session, tenant_id, structure, relation_type, source, target, exclude_relation_id=item.id)
+    item.structure_id = structure.id
+    item.relation_type_id = relation_type.id
+    item.source_unit_id = source.id
+    item.target_unit_id = target.id
+    for field in ("valid_from", "valid_until", "is_active", "settings"):
+        if field in payload.model_fields_set:
+            setattr(item, field, getattr(payload, field))
+    return _item_relation(_commit(session, item))
+
+
+@router.post("/function-types", response_model=OrganizationFunctionTypeItem, status_code=status.HTTP_201_CREATED)
+def create_function_type(
+    payload: FunctionTypeCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationFunctionTypeItem:
+    tenant_id = _tenant_id(principal)
+    _ensure_optional_unit_type(session, tenant_id, payload.organization_unit_type_id)
+    slug = _slug(payload.slug, payload.name)
+    _ensure_unique_slug(session, OrganizationFunctionType, tenant_id, slug)
+    item = OrganizationFunctionType(
+        tenant_id=tenant_id,
+        slug=slug,
+        name=payload.name.strip(),
+        description=payload.description,
+        organization_unit_type_id=payload.organization_unit_type_id,
+        delegable=payload.delegable,
+        act_in_place_allowed=payload.act_in_place_allowed,
+        is_active=payload.is_active,
+        settings=payload.settings,
+    )
+    session.add(item)
+    return _item_function_type(_commit(session, item))
+
+
+@router.patch("/function-types/{item_id}", response_model=OrganizationFunctionTypeItem)
+def update_function_type(
+    item_id: str,
+    payload: FunctionTypeUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_MODEL_WRITE_SCOPES)),
+) -> OrganizationFunctionTypeItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationFunctionType, item_id, tenant_id, "Organization function type")
+    _apply_slugged_update(session, item, payload, tenant_id, OrganizationFunctionType)
+    if "organization_unit_type_id" in payload.model_fields_set:
+        _ensure_optional_unit_type(session, tenant_id, payload.organization_unit_type_id)
+        item.organization_unit_type_id = payload.organization_unit_type_id
+    for field in ("delegable", "act_in_place_allowed"):
+        if field in payload.model_fields_set:
+            value = getattr(payload, field)
+            if value is None:
+                raise _invalid(f"{field} cannot be empty.")
+            setattr(item, field, value)
+    return _item_function_type(_commit(session, item))
+
+
+@router.post("/functions", response_model=OrganizationFunctionItem, status_code=status.HTTP_201_CREATED)
+def create_function(
+    payload: FunctionCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_FUNCTION_WRITE_SCOPES)),
+) -> OrganizationFunctionItem:
+    tenant_id = _tenant_id(principal)
+    unit = _get_tenant_row(session, OrganizationUnit, payload.organization_unit_id, tenant_id, "Organization unit")
+    function_type = _optional_function_type(session, tenant_id, payload.function_type_id)
+    slug = _slug(payload.slug, payload.name)
+    _ensure_function_slug(session, tenant_id, unit.id, slug)
+    delegable = payload.delegable if payload.delegable is not None else (function_type.delegable if function_type else False)
+    act_in_place_allowed = payload.act_in_place_allowed if payload.act_in_place_allowed is not None else (function_type.act_in_place_allowed if function_type else False)
+    item = OrganizationFunction(
+        tenant_id=tenant_id,
+        function_type_id=payload.function_type_id,
+        organization_unit_id=unit.id,
+        slug=slug,
+        name=payload.name.strip(),
+        description=payload.description,
+        delegable=delegable,
+        act_in_place_allowed=act_in_place_allowed,
+        is_active=payload.is_active,
+        settings=payload.settings,
+    )
+    session.add(item)
+    return _item_function(_commit(session, item))
+
+
+@router.patch("/functions/{item_id}", response_model=OrganizationFunctionItem)
+def update_function(
+    item_id: str,
+    payload: FunctionUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_FUNCTION_WRITE_SCOPES)),
+) -> OrganizationFunctionItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationFunction, item_id, tenant_id, "Organization function")
+    _apply_slugged_update_for_function(session, item, payload, tenant_id)
+    if "organization_unit_id" in payload.model_fields_set:
+        if payload.organization_unit_id is None:
+            raise _invalid("Organization unit is required.")
+        unit = _get_tenant_row(session, OrganizationUnit, payload.organization_unit_id, tenant_id, "Organization unit")
+        _ensure_function_slug(session, tenant_id, unit.id, item.slug, exclude_id=item.id)
+        item.organization_unit_id = unit.id
+    if "function_type_id" in payload.model_fields_set:
+        _optional_function_type(session, tenant_id, payload.function_type_id)
+        item.function_type_id = payload.function_type_id
+    for field in ("delegable", "act_in_place_allowed"):
+        if field in payload.model_fields_set:
+            value = getattr(payload, field)
+            if value is None:
+                raise _invalid(f"{field} cannot be empty.")
+            setattr(item, field, value)
+    return _item_function(_commit(session, item))
+
+
+@router.post("/function-assignments", response_model=OrganizationFunctionAssignmentItem, status_code=status.HTTP_201_CREATED)
+def create_function_assignment(
+    payload: FunctionAssignmentCreateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_ASSIGN_SCOPES)),
+) -> OrganizationFunctionAssignmentItem:
+    tenant_id = _tenant_id(principal)
+    function = _get_tenant_row(session, OrganizationFunction, payload.function_id, tenant_id, "Organization function")
+    item = OrganizationFunctionAssignment(
+        tenant_id=tenant_id,
+        identity_id=payload.identity_id,
+        account_id=payload.account_id,
+        function_id=function.id,
+        organization_unit_id=function.organization_unit_id,
+        applies_to_subunits=payload.applies_to_subunits,
+        source=payload.source,
+        delegated_from_assignment_id=payload.delegated_from_assignment_id,
+        acting_for_account_id=payload.acting_for_account_id,
+        valid_from=payload.valid_from,
+        valid_until=payload.valid_until,
+        is_active=payload.is_active,
+        settings=payload.settings,
+    )
+    if item.delegated_from_assignment_id is not None:
+        _get_tenant_row(session, OrganizationFunctionAssignment, item.delegated_from_assignment_id, tenant_id, "Delegated function assignment")
+    session.add(item)
+    return _item_assignment(_commit(session, item))
+
+
+@router.patch("/function-assignments/{item_id}", response_model=OrganizationFunctionAssignmentItem)
+def update_function_assignment(
+    item_id: str,
+    payload: FunctionAssignmentUpdateRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_any_scope(*ORG_ASSIGN_SCOPES)),
+) -> OrganizationFunctionAssignmentItem:
+    tenant_id = _tenant_id(principal)
+    item = _get_tenant_row(session, OrganizationFunctionAssignment, item_id, tenant_id, "Organization function assignment")
+    if "function_id" in payload.model_fields_set:
+        if payload.function_id is None:
+            raise _invalid("Function is required.")
+        function = _get_tenant_row(session, OrganizationFunction, payload.function_id, tenant_id, "Organization function")
+        item.function_id = function.id
+        item.organization_unit_id = function.organization_unit_id
+    if "identity_id" in payload.model_fields_set and payload.identity_id is None:
+        raise _invalid("Identity is required.")
+    if "source" in payload.model_fields_set and payload.source is None:
+        raise _invalid("Assignment source is required.")
+    if "applies_to_subunits" in payload.model_fields_set and payload.applies_to_subunits is None:
+        raise _invalid("Subunit applicability cannot be empty.")
+    if "is_active" in payload.model_fields_set and payload.is_active is None:
+        raise _invalid("Active state cannot be empty.")
+    if "settings" in payload.model_fields_set and payload.settings is None:
+        raise _invalid("Settings cannot be empty.")
+    for field in (
+        "identity_id",
+        "account_id",
+        "applies_to_subunits",
+        "source",
+        "delegated_from_assignment_id",
+        "acting_for_account_id",
+        "valid_from",
+        "valid_until",
+        "is_active",
+        "settings",
+    ):
+        if field in payload.model_fields_set:
+            setattr(item, field, getattr(payload, field))
+    if item.delegated_from_assignment_id == item.id:
+        raise _invalid("A function assignment cannot delegate from itself.")
+    if item.delegated_from_assignment_id is not None:
+        _get_tenant_row(session, OrganizationFunctionAssignment, item.delegated_from_assignment_id, tenant_id, "Delegated function assignment")
+    return _item_assignment(_commit(session, item))
+
+
+def _optional_function_type(session: Session, tenant_id: str, function_type_id: str | None) -> OrganizationFunctionType | None:
+    if function_type_id is None:
+        return None
+    return _get_tenant_row(session, OrganizationFunctionType, function_type_id, tenant_id, "Organization function type")
+
+
+def _ensure_function_slug(session: Session, tenant_id: str, organization_unit_id: str, slug: str, *, exclude_id: str | None = None) -> None:
+    query = session.query(OrganizationFunction).filter(
+        OrganizationFunction.tenant_id == tenant_id,
+        OrganizationFunction.organization_unit_id == organization_unit_id,
+        OrganizationFunction.slug == slug,
+    )
+    if exclude_id is not None:
+        query = query.filter(OrganizationFunction.id != exclude_id)
+    if query.count():
+        raise _conflict(f"Function slug already exists in this organization unit: {slug}")
+
+
+def _apply_slugged_update_for_function(session: Session, item: OrganizationFunction, payload: FunctionUpdateRequest, tenant_id: str) -> None:
+    fields = payload.model_fields_set
+    if "slug" in fields:
+        slug = _slug(payload.slug, item.name)
+        _ensure_function_slug(session, tenant_id, item.organization_unit_id, slug, exclude_id=item.id)
+        item.slug = slug
+    if "name" in fields:
+        if payload.name is None:
+            raise _invalid("Name cannot be empty.")
+        item.name = payload.name.strip()
+    if "description" in fields:
+        item.description = payload.description
+    if "is_active" in fields:
+        if payload.is_active is None:
+            raise _invalid("Active state cannot be empty.")
+        item.is_active = payload.is_active
+    if "settings" in fields:
+        if payload.settings is None:
+            raise _invalid("Settings cannot be empty.")
+        item.settings = payload.settings
+
+
+def _validated_relation_parts(
+    session: Session,
+    tenant_id: str,
+    *,
+    structure_id: str,
+    relation_type_id: str,
+    source_unit_id: str,
+    target_unit_id: str,
+) -> tuple[OrganizationStructure, OrganizationRelationType, OrganizationUnit, OrganizationUnit]:
+    structure = _get_tenant_row(session, OrganizationStructure, structure_id, tenant_id, "Organization structure")
+    relation_type = _get_tenant_row(session, OrganizationRelationType, relation_type_id, tenant_id, "Organization relation type")
+    source = _get_tenant_row(session, OrganizationUnit, source_unit_id, tenant_id, "Source organization unit")
+    target = _get_tenant_row(session, OrganizationUnit, target_unit_id, tenant_id, "Target organization unit")
+    if relation_type.structure_id is not None and relation_type.structure_id != structure.id:
+        raise _invalid("Relation type is bound to another structure.")
+    if source.id == target.id:
+        raise _invalid("A relation cannot connect an organization unit to itself.")
+    if relation_type.source_unit_type_id is not None and source.unit_type_id != relation_type.source_unit_type_id:
+        raise _invalid("Source organization unit type is not valid for this relation type.")
+    if relation_type.target_unit_type_id is not None and target.unit_type_id != relation_type.target_unit_type_id:
+        raise _invalid("Target organization unit type is not valid for this relation type.")
+    return structure, relation_type, source, target
+
+
+def _validate_relation_edge(
+    session: Session,
+    tenant_id: str,
+    structure: OrganizationStructure,
+    relation_type: OrganizationRelationType,
+    source: OrganizationUnit,
+    target: OrganizationUnit,
+    *,
+    exclude_relation_id: str | None = None,
+) -> None:
+    if relation_type.is_hierarchical and not relation_type.allow_cycles:
+        if _would_create_cycle(
+            session,
+            tenant_id=tenant_id,
+            structure_id=structure.id,
+            source_unit_id=source.id,
+            target_unit_id=target.id,
+            exclude_relation_id=exclude_relation_id,
+        ):
+            raise _invalid("This hierarchical relation would create a cycle.")
+
+
+def _would_create_cycle(
+    session: Session,
+    *,
+    tenant_id: str,
+    structure_id: str,
+    source_unit_id: str,
+    target_unit_id: str,
+    exclude_relation_id: str | None = None,
+) -> bool:
+    pending = [target_unit_id]
+    seen: set[str] = set()
+    while pending:
+        current = pending.pop()
+        if current == source_unit_id:
+            return True
+        if current in seen:
+            continue
+        seen.add(current)
+        query = session.query(OrganizationRelation.target_unit_id).filter(
+            OrganizationRelation.tenant_id == tenant_id,
+            OrganizationRelation.structure_id == structure_id,
+            OrganizationRelation.source_unit_id == current,
+            OrganizationRelation.is_active.is_(True),
+        )
+        if exclude_relation_id is not None:
+            query = query.filter(OrganizationRelation.id != exclude_relation_id)
+        pending.extend(row[0] for row in query.all())
+    return False
--- a/src/govoplan_organizations/backend/api/v1/schemas.py
+++ b/src/govoplan_organizations/backend/api/v1/schemas.py
@@ -0,0 +1,275 @@
+from __future__ import annotations
+
+from datetime import datetime
+from typing import Any, Literal
+
+from pydantic import BaseModel, Field
+
+
+StructureKind = Literal["hierarchy", "network", "membership", "classification"]
+
+
+class OrganizationUnitTypeItem(BaseModel):
+    id: str
+    tenant_id: str
+    slug: str
+    name: str
+    description: str | None = None
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationStructureItem(BaseModel):
+    id: str
+    tenant_id: str
+    slug: str
+    name: str
+    description: str | None = None
+    structure_kind: str
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationRelationTypeItem(BaseModel):
+    id: str
+    tenant_id: str
+    structure_id: str | None = None
+    slug: str
+    name: str
+    description: str | None = None
+    source_unit_type_id: str | None = None
+    target_unit_type_id: str | None = None
+    is_hierarchical: bool
+    allow_cycles: bool
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationUnitItem(BaseModel):
+    id: str
+    tenant_id: str
+    unit_type_id: str | None = None
+    parent_id: str | None = None
+    slug: str
+    name: str
+    description: str | None = None
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationRelationItem(BaseModel):
+    id: str
+    tenant_id: str
+    structure_id: str
+    relation_type_id: str
+    source_unit_id: str
+    target_unit_id: str
+    valid_from: datetime | None = None
+    valid_until: datetime | None = None
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationFunctionTypeItem(BaseModel):
+    id: str
+    tenant_id: str
+    slug: str
+    name: str
+    description: str | None = None
+    organization_unit_type_id: str | None = None
+    delegable: bool
+    act_in_place_allowed: bool
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationFunctionItem(BaseModel):
+    id: str
+    tenant_id: str
+    function_type_id: str | None = None
+    organization_unit_id: str
+    slug: str
+    name: str
+    description: str | None = None
+    delegable: bool
+    act_in_place_allowed: bool
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationFunctionAssignmentItem(BaseModel):
+    id: str
+    tenant_id: str
+    identity_id: str
+    account_id: str | None = None
+    function_id: str
+    organization_unit_id: str
+    applies_to_subunits: bool
+    source: str
+    delegated_from_assignment_id: str | None = None
+    acting_for_account_id: str | None = None
+    valid_from: datetime | None = None
+    valid_until: datetime | None = None
+    is_active: bool
+    settings: dict[str, Any]
+    created_at: datetime
+    updated_at: datetime
+
+
+class OrganizationModelResponse(BaseModel):
+    unit_types: list[OrganizationUnitTypeItem]
+    structures: list[OrganizationStructureItem]
+    relation_types: list[OrganizationRelationTypeItem]
+    units: list[OrganizationUnitItem]
+    relations: list[OrganizationRelationItem]
+    function_types: list[OrganizationFunctionTypeItem]
+    functions: list[OrganizationFunctionItem]
+    function_assignments: list[OrganizationFunctionAssignmentItem]
+
+
+class SluggedCreateRequest(BaseModel):
+    slug: str | None = Field(default=None, max_length=100)
+    name: str = Field(min_length=1, max_length=255)
+    description: str | None = None
+    is_active: bool = True
+    settings: dict[str, Any] = Field(default_factory=dict)
+
+
+class SluggedUpdateRequest(BaseModel):
+    slug: str | None = Field(default=None, max_length=100)
+    name: str | None = Field(default=None, max_length=255)
+    description: str | None = None
+    is_active: bool | None = None
+    settings: dict[str, Any] | None = None
+
+
+class UnitTypeCreateRequest(SluggedCreateRequest):
+    pass
+
+
+class UnitTypeUpdateRequest(SluggedUpdateRequest):
+    pass
+
+
+class StructureCreateRequest(SluggedCreateRequest):
+    structure_kind: StructureKind = "hierarchy"
+
+
+class StructureUpdateRequest(SluggedUpdateRequest):
+    structure_kind: StructureKind | None = None
+
+
+class RelationTypeCreateRequest(SluggedCreateRequest):
+    structure_id: str | None = None
+    source_unit_type_id: str | None = None
+    target_unit_type_id: str | None = None
+    is_hierarchical: bool = True
+    allow_cycles: bool = False
+
+
+class RelationTypeUpdateRequest(SluggedUpdateRequest):
+    structure_id: str | None = None
+    source_unit_type_id: str | None = None
+    target_unit_type_id: str | None = None
+    is_hierarchical: bool | None = None
+    allow_cycles: bool | None = None
+
+
+class UnitCreateRequest(SluggedCreateRequest):
+    unit_type_id: str | None = None
+    parent_id: str | None = None
+
+
+class UnitUpdateRequest(SluggedUpdateRequest):
+    unit_type_id: str | None = None
+    parent_id: str | None = None
+
+
+class RelationCreateRequest(BaseModel):
+    structure_id: str
+    relation_type_id: str
+    source_unit_id: str
+    target_unit_id: str
+    valid_from: datetime | None = None
+    valid_until: datetime | None = None
+    is_active: bool = True
+    settings: dict[str, Any] = Field(default_factory=dict)
+
+
+class RelationUpdateRequest(BaseModel):
+    structure_id: str | None = None
+    relation_type_id: str | None = None
+    source_unit_id: str | None = None
+    target_unit_id: str | None = None
+    valid_from: datetime | None = None
+    valid_until: datetime | None = None
+    is_active: bool | None = None
+    settings: dict[str, Any] | None = None
+
+
+class FunctionTypeCreateRequest(SluggedCreateRequest):
+    organization_unit_type_id: str | None = None
+    delegable: bool = False
+    act_in_place_allowed: bool = False
+
+
+class FunctionTypeUpdateRequest(SluggedUpdateRequest):
+    organization_unit_type_id: str | None = None
+    delegable: bool | None = None
+    act_in_place_allowed: bool | None = None
+
+
+class FunctionCreateRequest(SluggedCreateRequest):
+    organization_unit_id: str
+    function_type_id: str | None = None
+    delegable: bool | None = None
+    act_in_place_allowed: bool | None = None
+
+
+class FunctionUpdateRequest(SluggedUpdateRequest):
+    organization_unit_id: str | None = None
+    function_type_id: str | None = None
+    delegable: bool | None = None
+    act_in_place_allowed: bool | None = None
+
+
+class FunctionAssignmentCreateRequest(BaseModel):
+    identity_id: str
+    function_id: str
+    account_id: str | None = None
+    applies_to_subunits: bool = False
+    source: str = "direct"
+    delegated_from_assignment_id: str | None = None
+    acting_for_account_id: str | None = None
+    valid_from: datetime | None = None
+    valid_until: datetime | None = None
+    is_active: bool = True
+    settings: dict[str, Any] = Field(default_factory=dict)
+
+
+class FunctionAssignmentUpdateRequest(BaseModel):
+    identity_id: str | None = None
+    function_id: str | None = None
+    account_id: str | None = None
+    applies_to_subunits: bool | None = None
+    source: str | None = None
+    delegated_from_assignment_id: str | None = None
+    acting_for_account_id: str | None = None
+    valid_from: datetime | None = None
+    valid_until: datetime | None = None
+    is_active: bool | None = None
+    settings: dict[str, Any] | None = None
--- a/src/govoplan_organizations/backend/db/models.py
+++ b/src/govoplan_organizations/backend/db/models.py
@@ -4,7 +4,7 @@ import uuid
 from datetime import datetime
 from typing import Any

-from sqlalchemy import Boolean, DateTime, ForeignKey, JSON, String, Text, UniqueConstraint
+from sqlalchemy import Boolean, DateTime, ForeignKey, Index, JSON, String, Text, UniqueConstraint
 from sqlalchemy.orm import Mapped, mapped_column

 from govoplan_core.db.base import Base, TimestampMixin
@@ -19,7 +19,8 @@ class OrganizationUnit(Base, TimestampMixin):
    __table_args__ = (UniqueConstraint("tenant_id", "slug", name="uq_organizations_units_tenant_slug"),)

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
-    tenant_id: Mapped[str] = mapped_column(ForeignKey("tenancy_tenants.id", ondelete="CASCADE"), nullable=False, index=True)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    unit_type_id: Mapped[str | None] = mapped_column(ForeignKey("organizations_unit_types.id", ondelete="SET NULL"), nullable=True, index=True)
    parent_id: Mapped[str | None] = mapped_column(ForeignKey("organizations_units.id", ondelete="SET NULL"), nullable=True, index=True)
    slug: Mapped[str] = mapped_column(String(100), nullable=False)
    name: Mapped[str] = mapped_column(String(255), nullable=False)
@@ -28,12 +29,104 @@ class OrganizationUnit(Base, TimestampMixin):
    settings: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)


+class OrganizationUnitType(Base, TimestampMixin):
+    __tablename__ = "organizations_unit_types"
+    __table_args__ = (UniqueConstraint("tenant_id", "slug", name="uq_organizations_unit_types_tenant_slug"),)
+
+    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    slug: Mapped[str] = mapped_column(String(100), nullable=False)
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+    description: Mapped[str | None] = mapped_column(Text)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    settings: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
+
+
+class OrganizationStructure(Base, TimestampMixin):
+    __tablename__ = "organizations_structures"
+    __table_args__ = (UniqueConstraint("tenant_id", "slug", name="uq_organizations_structures_tenant_slug"),)
+
+    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    slug: Mapped[str] = mapped_column(String(100), nullable=False)
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+    description: Mapped[str | None] = mapped_column(Text)
+    structure_kind: Mapped[str] = mapped_column(String(30), default="hierarchy", nullable=False)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    settings: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
+
+
+class OrganizationRelationType(Base, TimestampMixin):
+    __tablename__ = "organizations_relation_types"
+    __table_args__ = (
+        UniqueConstraint("tenant_id", "slug", name="uq_organizations_relation_types_tenant_slug"),
+        Index("ix_organizations_relation_types_structure", "tenant_id", "structure_id"),
+    )
+
+    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    structure_id: Mapped[str | None] = mapped_column(ForeignKey("organizations_structures.id", ondelete="SET NULL"), nullable=True, index=True)
+    slug: Mapped[str] = mapped_column(String(100), nullable=False)
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+    description: Mapped[str | None] = mapped_column(Text)
+    source_unit_type_id: Mapped[str | None] = mapped_column(ForeignKey("organizations_unit_types.id", ondelete="SET NULL"), nullable=True, index=True)
+    target_unit_type_id: Mapped[str | None] = mapped_column(ForeignKey("organizations_unit_types.id", ondelete="SET NULL"), nullable=True, index=True)
+    is_hierarchical: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    allow_cycles: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    settings: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
+
+
+class OrganizationRelation(Base, TimestampMixin):
+    __tablename__ = "organizations_relations"
+    __table_args__ = (
+        UniqueConstraint(
+            "tenant_id",
+            "structure_id",
+            "relation_type_id",
+            "source_unit_id",
+            "target_unit_id",
+            name="uq_organizations_relations_edge",
+        ),
+        Index("ix_organizations_relations_structure_source", "tenant_id", "structure_id", "source_unit_id"),
+        Index("ix_organizations_relations_structure_target", "tenant_id", "structure_id", "target_unit_id"),
+    )
+
+    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    structure_id: Mapped[str] = mapped_column(ForeignKey("organizations_structures.id", ondelete="CASCADE"), nullable=False, index=True)
+    relation_type_id: Mapped[str] = mapped_column(ForeignKey("organizations_relation_types.id", ondelete="CASCADE"), nullable=False, index=True)
+    source_unit_id: Mapped[str] = mapped_column(ForeignKey("organizations_units.id", ondelete="CASCADE"), nullable=False, index=True)
+    target_unit_id: Mapped[str] = mapped_column(ForeignKey("organizations_units.id", ondelete="CASCADE"), nullable=False, index=True)
+    valid_from: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+    valid_until: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    settings: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
+
+
+class OrganizationFunctionType(Base, TimestampMixin):
+    __tablename__ = "organizations_function_types"
+    __table_args__ = (UniqueConstraint("tenant_id", "slug", name="uq_organizations_function_types_tenant_slug"),)
+
+    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    slug: Mapped[str] = mapped_column(String(100), nullable=False)
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+    description: Mapped[str | None] = mapped_column(Text)
+    organization_unit_type_id: Mapped[str | None] = mapped_column(ForeignKey("organizations_unit_types.id", ondelete="SET NULL"), nullable=True, index=True)
+    delegable: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
+    act_in_place_allowed: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
+    is_active: Mapped[bool] = mapped_column(Boolean, default=True, nullable=False)
+    settings: Mapped[dict[str, Any]] = mapped_column(JSON, default=dict, nullable=False)
+
+
 class OrganizationFunction(Base, TimestampMixin):
    __tablename__ = "organizations_functions"
    __table_args__ = (UniqueConstraint("tenant_id", "organization_unit_id", "slug", name="uq_organizations_functions_tenant_unit_slug"),)

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
-    tenant_id: Mapped[str] = mapped_column(ForeignKey("tenancy_tenants.id", ondelete="CASCADE"), nullable=False, index=True)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    function_type_id: Mapped[str | None] = mapped_column(ForeignKey("organizations_function_types.id", ondelete="SET NULL"), nullable=True, index=True)
    organization_unit_id: Mapped[str] = mapped_column(ForeignKey("organizations_units.id", ondelete="CASCADE"), nullable=False, index=True)
    slug: Mapped[str] = mapped_column(String(100), nullable=False)
    name: Mapped[str] = mapped_column(String(255), nullable=False)
@@ -49,17 +142,17 @@ class OrganizationFunctionAssignment(Base, TimestampMixin):
    __table_args__ = (
        UniqueConstraint(
            "tenant_id",
-            "account_id",
+            "identity_id",
            "function_id",
            "organization_unit_id",
-            name="uq_organizations_function_assignments_account_scope",
+            name="uq_organizations_function_assignments_identity_scope",
        ),
    )

    id: Mapped[str] = mapped_column(String(36), primary_key=True, default=new_uuid)
-    tenant_id: Mapped[str] = mapped_column(ForeignKey("tenancy_tenants.id", ondelete="CASCADE"), nullable=False, index=True)
-    account_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
-    identity_id: Mapped[str | None] = mapped_column(String(36), nullable=True, index=True)
+    tenant_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    identity_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
+    account_id: Mapped[str | None] = mapped_column(String(36), nullable=True, index=True)
    function_id: Mapped[str] = mapped_column(ForeignKey("organizations_functions.id", ondelete="CASCADE"), nullable=False, index=True)
    organization_unit_id: Mapped[str] = mapped_column(ForeignKey("organizations_units.id", ondelete="CASCADE"), nullable=False, index=True)
    applies_to_subunits: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
@@ -75,6 +168,11 @@ class OrganizationFunctionAssignment(Base, TimestampMixin):
 __all__ = [
    "OrganizationFunction",
    "OrganizationFunctionAssignment",
+    "OrganizationFunctionType",
+    "OrganizationRelation",
+    "OrganizationRelationType",
+    "OrganizationStructure",
    "OrganizationUnit",
+    "OrganizationUnitType",
    "new_uuid",
 ]
--- a/src/govoplan_organizations/backend/directory.py
+++ b/src/govoplan_organizations/backend/directory.py
@@ -8,6 +8,7 @@ from govoplan_core.core.organizations import (
    OrganizationFunctionRef,
    OrganizationUnitRef,
 )
+from govoplan_core.core.identity import IdentityDirectory
 from govoplan_core.db.session import get_database
 from govoplan_core.security.time import utc_now
 from govoplan_organizations.backend.db.models import (
@@ -27,6 +28,7 @@ def _unit_ref(item: OrganizationUnit) -> OrganizationUnitRef:
        tenant_id=item.tenant_id,
        slug=item.slug,
        name=item.name,
+        unit_type_id=item.unit_type_id,
        parent_id=item.parent_id,
        description=item.description,
        status=_status(item.is_active),  # type: ignore[arg-type]
@@ -40,6 +42,7 @@ def _function_ref(item: OrganizationFunction) -> OrganizationFunctionRef:
        organization_unit_id=item.organization_unit_id,
        slug=item.slug,
        name=item.name,
+        function_type_id=item.function_type_id,
        description=item.description,
        delegable=item.delegable,
        act_in_place_allowed=item.act_in_place_allowed,
@@ -51,8 +54,8 @@ def _assignment_ref(item: OrganizationFunctionAssignment) -> OrganizationFunctio
    return OrganizationFunctionAssignmentRef(
        id=item.id,
        tenant_id=item.tenant_id,
-        account_id=item.account_id,
        identity_id=item.identity_id,
+        account_id=item.account_id,
        function_id=item.function_id,
        organization_unit_id=item.organization_unit_id,
        applies_to_subunits=item.applies_to_subunits,
@@ -66,6 +69,9 @@ def _assignment_ref(item: OrganizationFunctionAssignment) -> OrganizationFunctio


 class SqlOrganizationDirectory(OrganizationDirectory):
+    def __init__(self, *, identity_directory: IdentityDirectory | None = None) -> None:
+        self._identity_directory = identity_directory
+
    def get_organization_unit(self, organization_unit_id: str) -> OrganizationUnitRef | None:
        with get_database().session() as session:
            item = session.get(OrganizationUnit, organization_unit_id)
@@ -126,14 +132,52 @@ class SqlOrganizationDirectory(OrganizationDirectory):
        account_id: str,
        *,
        tenant_id: str | None = None,
+    ) -> tuple[OrganizationFunctionAssignmentRef, ...]:
+        identity_ids: set[str] = set()
+        if self._identity_directory is not None:
+            identity = self._identity_directory.identity_for_account(account_id)
+            if identity is not None:
+                identity_ids.add(identity.id)
+        if not identity_ids:
+            return self._function_assignments_for_identity_ids(
+                identity_ids=(),
+                tenant_id=tenant_id,
+                fallback_account_id=account_id,
+            )
+        return self._function_assignments_for_identity_ids(
+            identity_ids=tuple(identity_ids),
+            tenant_id=tenant_id,
+            fallback_account_id=account_id,
+        )
+
+    def function_assignments_for_identity(
+        self,
+        identity_id: str,
+        *,
+        tenant_id: str | None = None,
+    ) -> tuple[OrganizationFunctionAssignmentRef, ...]:
+        return self._function_assignments_for_identity_ids(identity_ids=(identity_id,), tenant_id=tenant_id)
+
+    def _function_assignments_for_identity_ids(
+        self,
+        *,
+        identity_ids: tuple[str, ...],
+        tenant_id: str | None = None,
+        fallback_account_id: str | None = None,
    ) -> tuple[OrganizationFunctionAssignmentRef, ...]:
        now = utc_now()
        with get_database().session() as session:
+            identity_or_account_filter = OrganizationFunctionAssignment.identity_id.in_(identity_ids)
+            if fallback_account_id:
+                identity_or_account_filter = or_(
+                    identity_or_account_filter,
+                    OrganizationFunctionAssignment.account_id == fallback_account_id,
+                )
            query = (
                session.query(OrganizationFunctionAssignment)
                .join(OrganizationFunction, OrganizationFunction.id == OrganizationFunctionAssignment.function_id)
                .filter(
-                    OrganizationFunctionAssignment.account_id == account_id,
+                    identity_or_account_filter,
                    OrganizationFunctionAssignment.is_active.is_(True),
                    OrganizationFunction.is_active.is_(True),
                    or_(OrganizationFunctionAssignment.valid_from.is_(None), OrganizationFunctionAssignment.valid_from <= now),
--- a/src/govoplan_organizations/backend/manifest.py
+++ b/src/govoplan_organizations/backend/manifest.py
@@ -1,28 +1,122 @@
 from __future__ import annotations

+from pathlib import Path
+
+from govoplan_core.core.access import CAPABILITY_AUTH_PERMISSION_EVALUATOR, CAPABILITY_AUTH_PRINCIPAL_RESOLVER
+from govoplan_core.core.identity import CAPABILITY_IDENTITY_DIRECTORY, IdentityDirectory
 from govoplan_core.core.module_guards import persistent_table_uninstall_guard
-from govoplan_core.core.modules import DocumentationTopic, MigrationSpec, ModuleContext, ModuleManifest
+from govoplan_core.core.modules import (
+    DocumentationTopic,
+    FrontendModule,
+    FrontendRoute,
+    MigrationSpec,
+    ModuleContext,
+    ModuleManifest,
+    NavItem,
+    PermissionDefinition,
+    RoleTemplate,
+)
 from govoplan_core.core.organizations import CAPABILITY_ORGANIZATION_DIRECTORY
 from govoplan_core.db.base import Base
 from govoplan_organizations.backend.db import models as organization_models  # noqa: F401 - populate metadata


-def _organization_directory(context: ModuleContext) -> object:
+ORGANIZATIONS_READ_SCOPES = (
+    "organizations:model:read",
+    "organizations:unit:read",
+    "organizations:function:read",
+    "admin:settings:read",
+)
+
+
+def _permission(scope: str, label: str, description: str) -> PermissionDefinition:
+    module_id, resource, action = scope.split(":", 2)
+    return PermissionDefinition(
+        scope=scope,
+        label=label,
+        description=description,
+        category="Organizations",
+        level="tenant",
+        module_id=module_id,
+        resource=resource,
+        action=action,
+    )
+
+
+PERMISSIONS = (
+    _permission("organizations:model:read", "View organization model", "Read organization meta-model definitions such as unit types, structures, and relation types."),
+    _permission("organizations:model:write", "Manage organization model", "Create and edit organization meta-model definitions."),
+    _permission("organizations:unit:read", "View organization units", "Read concrete organization units and relations."),
+    _permission("organizations:unit:write", "Manage organization units", "Create and edit concrete organization units and relations."),
+    _permission("organizations:function:read", "View organization functions", "Read function definitions and identity-held assignments."),
+    _permission("organizations:function:write", "Manage organization functions", "Create and edit function definitions."),
+    _permission("organizations:function:assign", "Assign organization functions", "Assign identity-held functions in organization units."),
+)
+
+ROLE_TEMPLATES = (
+    RoleTemplate(
+        slug="organization_modeler",
+        name="Organization modeler",
+        description="Manage organization meta-model, concrete units, structures, functions, and assignments.",
+        permissions=tuple(permission.scope for permission in PERMISSIONS),
+    ),
+    RoleTemplate(
+        slug="organization_viewer",
+        name="Organization viewer",
+        description="Read organization model, organization units, and function assignments.",
+        permissions=("organizations:model:read", "organizations:unit:read", "organizations:function:read"),
+    ),
+)
+
+
+def _route_factory(context: ModuleContext):
    del context
+    from govoplan_organizations.backend.api.v1.routes import router
+
+    return router
+
+
+def _organization_directory(context: ModuleContext) -> object:
+    identity_directory: IdentityDirectory | None = None
+    registry = context.registry
+    if hasattr(registry, "has_capability") and registry.has_capability(CAPABILITY_IDENTITY_DIRECTORY):
+        capability = registry.require_capability(CAPABILITY_IDENTITY_DIRECTORY)
+        if isinstance(capability, IdentityDirectory):
+            identity_directory = capability
    from govoplan_organizations.backend.directory import SqlOrganizationDirectory

-    return SqlOrganizationDirectory()
+    return SqlOrganizationDirectory(identity_directory=identity_directory)


 manifest = ModuleManifest(
    id="organizations",
    name="Organizations",
    version="0.1.6",
-    dependencies=("tenancy",),
-    migration_spec=MigrationSpec(module_id="organizations", metadata=Base.metadata),
+    required_capabilities=(CAPABILITY_AUTH_PRINCIPAL_RESOLVER, CAPABILITY_AUTH_PERMISSION_EVALUATOR),
+    optional_dependencies=("tenancy", "identity", "access", "audit", "policy"),
+    permissions=PERMISSIONS,
+    role_templates=ROLE_TEMPLATES,
+    route_factory=_route_factory,
+    nav_items=(NavItem(path="/organizations", label="Organizations", icon="users", required_any=ORGANIZATIONS_READ_SCOPES, order=70),),
+    frontend=FrontendModule(
+        module_id="organizations",
+        package_name="@govoplan/organizations-webui",
+        routes=(FrontendRoute(path="/organizations", component="OrganizationsPage", required_any=ORGANIZATIONS_READ_SCOPES, order=70),),
+        nav_items=(NavItem(path="/organizations", label="Organizations", icon="users", required_any=ORGANIZATIONS_READ_SCOPES, order=70),),
+    ),
+    migration_spec=MigrationSpec(
+        module_id="organizations",
+        metadata=Base.metadata,
+        script_location=str(Path(__file__).with_name("migrations") / "versions"),
+    ),
    uninstall_guard_providers=(
        persistent_table_uninstall_guard(
+            organization_models.OrganizationUnitType,
+            organization_models.OrganizationStructure,
+            organization_models.OrganizationRelationType,
+            organization_models.OrganizationRelation,
            organization_models.OrganizationUnit,
+            organization_models.OrganizationFunctionType,
            organization_models.OrganizationFunction,
            organization_models.OrganizationFunctionAssignment,
            label="Organizations",
@@ -37,8 +131,9 @@ manifest = ModuleManifest(
            title="Organization model",
            summary="Organizations owns units, hierarchy, functions, and function assignments. Access maps those facts to roles and rights.",
            body=(
-                "Use organization functions to model responsibilities that outlive people. "
-                "A function assignment can apply to one organization unit or to that unit and all subunits."
+                "Use organization unit types, structures, and relation types to model how the institution describes itself. "
+                "A concrete organization unit can participate in several structures at the same time, such as an employer hierarchy and an academic structure. "
+                "Functions are held by identities in organization units. Accounts only exercise those functions through identity and access policy."
            ),
            layer="configured",
            documentation_types=("admin", "user"),
--- a/src/govoplan_organizations/backend/migrations/init.py
+++ b/src/govoplan_organizations/backend/migrations/init.py
@@ -0,0 +1 @@
+"""Organizations module migrations."""
--- a/src/govoplan_organizations/backend/migrations/versions/6d7e8f9a0b1c_organization_meta_model.py
+++ b/src/govoplan_organizations/backend/migrations/versions/6d7e8f9a0b1c_organization_meta_model.py
@@ -0,0 +1,299 @@
+"""organization meta-model
+
+Revision ID: 6d7e8f9a0b1c
+Revises: 2e3f4a5b6c7d
+Create Date: 2026-07-10 00:00:00.000000
+"""
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+
+revision = "6d7e8f9a0b1c"
+down_revision = "2e3f4a5b6c7d"
+branch_labels = None
+depends_on = None
+
+
+def _tables() -> set[str]:
+    return set(sa.inspect(op.get_bind()).get_table_names())
+
+
+def _columns(table_name: str) -> set[str]:
+    if table_name not in _tables():
+        return set()
+    return {item["name"] for item in sa.inspect(op.get_bind()).get_columns(table_name)}
+
+
+def _indexes(table_name: str) -> set[str]:
+    if table_name not in _tables():
+        return set()
+    return {item["name"] for item in sa.inspect(op.get_bind()).get_indexes(table_name)}
+
+
+def _create_index_if_missing(name: str, table_name: str, columns: list[str], *, unique: bool = False) -> None:
+    if table_name in _tables() and name not in _indexes(table_name):
+        op.create_index(name, table_name, columns, unique=unique)
+
+
+def _drop_index_if_exists(name: str, table_name: str) -> None:
+    if table_name in _tables() and name in _indexes(table_name):
+        op.drop_index(name, table_name=table_name)
+
+
+def _json_column(name: str) -> sa.Column:
+    return sa.Column(name, sa.JSON(), nullable=False)
+
+
+def _timestamp_columns() -> tuple[sa.Column, sa.Column]:
+    return (
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
+    )
+
+
+def _create_unit_types() -> None:
+    if "organizations_unit_types" not in _tables():
+        op.create_table(
+            "organizations_unit_types",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("slug", sa.String(length=100), nullable=False),
+            sa.Column("name", sa.String(length=255), nullable=False),
+            sa.Column("description", sa.Text(), nullable=True),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_unit_types")),
+            sa.UniqueConstraint("tenant_id", "slug", name="uq_organizations_unit_types_tenant_slug"),
+        )
+    _create_index_if_missing(op.f("ix_organizations_unit_types_tenant_id"), "organizations_unit_types", ["tenant_id"])
+
+
+def _create_structures() -> None:
+    if "organizations_structures" not in _tables():
+        op.create_table(
+            "organizations_structures",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("slug", sa.String(length=100), nullable=False),
+            sa.Column("name", sa.String(length=255), nullable=False),
+            sa.Column("description", sa.Text(), nullable=True),
+            sa.Column("structure_kind", sa.String(length=30), nullable=False),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_structures")),
+            sa.UniqueConstraint("tenant_id", "slug", name="uq_organizations_structures_tenant_slug"),
+        )
+    _create_index_if_missing(op.f("ix_organizations_structures_tenant_id"), "organizations_structures", ["tenant_id"])
+
+
+def _create_relation_types() -> None:
+    if "organizations_relation_types" not in _tables():
+        op.create_table(
+            "organizations_relation_types",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("structure_id", sa.String(length=36), nullable=True),
+            sa.Column("slug", sa.String(length=100), nullable=False),
+            sa.Column("name", sa.String(length=255), nullable=False),
+            sa.Column("description", sa.Text(), nullable=True),
+            sa.Column("source_unit_type_id", sa.String(length=36), nullable=True),
+            sa.Column("target_unit_type_id", sa.String(length=36), nullable=True),
+            sa.Column("is_hierarchical", sa.Boolean(), nullable=False),
+            sa.Column("allow_cycles", sa.Boolean(), nullable=False),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.ForeignKeyConstraint(["source_unit_type_id"], ["organizations_unit_types.id"], name=op.f("fk_organizations_relation_types_source_unit_type_id_organizations_unit_types"), ondelete="SET NULL"),
+            sa.ForeignKeyConstraint(["structure_id"], ["organizations_structures.id"], name=op.f("fk_organizations_relation_types_structure_id_organizations_structures"), ondelete="SET NULL"),
+            sa.ForeignKeyConstraint(["target_unit_type_id"], ["organizations_unit_types.id"], name=op.f("fk_organizations_relation_types_target_unit_type_id_organizations_unit_types"), ondelete="SET NULL"),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_relation_types")),
+            sa.UniqueConstraint("tenant_id", "slug", name="uq_organizations_relation_types_tenant_slug"),
+        )
+    for column in ("tenant_id", "source_unit_type_id", "structure_id", "target_unit_type_id"):
+        _create_index_if_missing(op.f(f"ix_organizations_relation_types_{column}"), "organizations_relation_types", [column])
+    _create_index_if_missing("ix_organizations_relation_types_structure", "organizations_relation_types", ["tenant_id", "structure_id"])
+
+
+def _create_units() -> None:
+    if "organizations_units" not in _tables():
+        op.create_table(
+            "organizations_units",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("unit_type_id", sa.String(length=36), nullable=True),
+            sa.Column("parent_id", sa.String(length=36), nullable=True),
+            sa.Column("slug", sa.String(length=100), nullable=False),
+            sa.Column("name", sa.String(length=255), nullable=False),
+            sa.Column("description", sa.Text(), nullable=True),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.ForeignKeyConstraint(["parent_id"], ["organizations_units.id"], name=op.f("fk_organizations_units_parent_id_organizations_units"), ondelete="SET NULL"),
+            sa.ForeignKeyConstraint(["unit_type_id"], ["organizations_unit_types.id"], name=op.f("fk_organizations_units_unit_type_id_organizations_unit_types"), ondelete="SET NULL"),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_units")),
+            sa.UniqueConstraint("tenant_id", "slug", name="uq_organizations_units_tenant_slug"),
+        )
+    elif "unit_type_id" not in _columns("organizations_units"):
+        op.add_column("organizations_units", sa.Column("unit_type_id", sa.String(length=36), nullable=True))
+    for column in ("parent_id", "tenant_id", "unit_type_id"):
+        _create_index_if_missing(op.f(f"ix_organizations_units_{column}"), "organizations_units", [column])
+
+
+def _create_relations() -> None:
+    if "organizations_relations" not in _tables():
+        op.create_table(
+            "organizations_relations",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("structure_id", sa.String(length=36), nullable=False),
+            sa.Column("relation_type_id", sa.String(length=36), nullable=False),
+            sa.Column("source_unit_id", sa.String(length=36), nullable=False),
+            sa.Column("target_unit_id", sa.String(length=36), nullable=False),
+            sa.Column("valid_from", sa.DateTime(timezone=True), nullable=True),
+            sa.Column("valid_until", sa.DateTime(timezone=True), nullable=True),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.ForeignKeyConstraint(["relation_type_id"], ["organizations_relation_types.id"], name=op.f("fk_organizations_relations_relation_type_id_organizations_relation_types"), ondelete="CASCADE"),
+            sa.ForeignKeyConstraint(["source_unit_id"], ["organizations_units.id"], name=op.f("fk_organizations_relations_source_unit_id_organizations_units"), ondelete="CASCADE"),
+            sa.ForeignKeyConstraint(["structure_id"], ["organizations_structures.id"], name=op.f("fk_organizations_relations_structure_id_organizations_structures"), ondelete="CASCADE"),
+            sa.ForeignKeyConstraint(["target_unit_id"], ["organizations_units.id"], name=op.f("fk_organizations_relations_target_unit_id_organizations_units"), ondelete="CASCADE"),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_relations")),
+            sa.UniqueConstraint("tenant_id", "structure_id", "relation_type_id", "source_unit_id", "target_unit_id", name="uq_organizations_relations_edge"),
+        )
+    for column in ("relation_type_id", "source_unit_id", "structure_id", "target_unit_id", "tenant_id"):
+        _create_index_if_missing(op.f(f"ix_organizations_relations_{column}"), "organizations_relations", [column])
+    _create_index_if_missing("ix_organizations_relations_structure_source", "organizations_relations", ["tenant_id", "structure_id", "source_unit_id"])
+    _create_index_if_missing("ix_organizations_relations_structure_target", "organizations_relations", ["tenant_id", "structure_id", "target_unit_id"])
+
+
+def _create_function_types() -> None:
+    if "organizations_function_types" not in _tables():
+        op.create_table(
+            "organizations_function_types",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("slug", sa.String(length=100), nullable=False),
+            sa.Column("name", sa.String(length=255), nullable=False),
+            sa.Column("description", sa.Text(), nullable=True),
+            sa.Column("organization_unit_type_id", sa.String(length=36), nullable=True),
+            sa.Column("delegable", sa.Boolean(), nullable=False),
+            sa.Column("act_in_place_allowed", sa.Boolean(), nullable=False),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.ForeignKeyConstraint(["organization_unit_type_id"], ["organizations_unit_types.id"], name=op.f("fk_organizations_function_types_organization_unit_type_id_organizations_unit_types"), ondelete="SET NULL"),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_function_types")),
+            sa.UniqueConstraint("tenant_id", "slug", name="uq_organizations_function_types_tenant_slug"),
+        )
+    for column in ("organization_unit_type_id", "tenant_id"):
+        _create_index_if_missing(op.f(f"ix_organizations_function_types_{column}"), "organizations_function_types", [column])
+
+
+def _create_functions() -> None:
+    if "organizations_functions" not in _tables():
+        op.create_table(
+            "organizations_functions",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("function_type_id", sa.String(length=36), nullable=True),
+            sa.Column("organization_unit_id", sa.String(length=36), nullable=False),
+            sa.Column("slug", sa.String(length=100), nullable=False),
+            sa.Column("name", sa.String(length=255), nullable=False),
+            sa.Column("description", sa.Text(), nullable=True),
+            sa.Column("delegable", sa.Boolean(), nullable=False),
+            sa.Column("act_in_place_allowed", sa.Boolean(), nullable=False),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.ForeignKeyConstraint(["function_type_id"], ["organizations_function_types.id"], name=op.f("fk_organizations_functions_function_type_id_organizations_function_types"), ondelete="SET NULL"),
+            sa.ForeignKeyConstraint(["organization_unit_id"], ["organizations_units.id"], name=op.f("fk_organizations_functions_organization_unit_id_organizations_units"), ondelete="CASCADE"),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_functions")),
+            sa.UniqueConstraint("tenant_id", "organization_unit_id", "slug", name="uq_organizations_functions_tenant_unit_slug"),
+        )
+    elif "function_type_id" not in _columns("organizations_functions"):
+        op.add_column("organizations_functions", sa.Column("function_type_id", sa.String(length=36), nullable=True))
+    for column in ("function_type_id", "organization_unit_id", "tenant_id"):
+        _create_index_if_missing(op.f(f"ix_organizations_functions_{column}"), "organizations_functions", [column])
+
+
+def _create_function_assignments() -> None:
+    if "organizations_function_assignments" not in _tables():
+        op.create_table(
+            "organizations_function_assignments",
+            sa.Column("id", sa.String(length=36), nullable=False),
+            sa.Column("tenant_id", sa.String(length=36), nullable=False),
+            sa.Column("identity_id", sa.String(length=36), nullable=False),
+            sa.Column("account_id", sa.String(length=36), nullable=True),
+            sa.Column("function_id", sa.String(length=36), nullable=False),
+            sa.Column("organization_unit_id", sa.String(length=36), nullable=False),
+            sa.Column("applies_to_subunits", sa.Boolean(), nullable=False),
+            sa.Column("source", sa.String(length=50), nullable=False),
+            sa.Column("delegated_from_assignment_id", sa.String(length=36), nullable=True),
+            sa.Column("acting_for_account_id", sa.String(length=36), nullable=True),
+            sa.Column("valid_from", sa.DateTime(timezone=True), nullable=True),
+            sa.Column("valid_until", sa.DateTime(timezone=True), nullable=True),
+            sa.Column("is_active", sa.Boolean(), nullable=False),
+            _json_column("settings"),
+            *_timestamp_columns(),
+            sa.ForeignKeyConstraint(["delegated_from_assignment_id"], ["organizations_function_assignments.id"], name=op.f("fk_organizations_function_assignments_delegated_from_assignment_id_organizations_function_assignments"), ondelete="SET NULL"),
+            sa.ForeignKeyConstraint(["function_id"], ["organizations_functions.id"], name=op.f("fk_organizations_function_assignments_function_id_organizations_functions"), ondelete="CASCADE"),
+            sa.ForeignKeyConstraint(["organization_unit_id"], ["organizations_units.id"], name=op.f("fk_organizations_function_assignments_organization_unit_id_organizations_units"), ondelete="CASCADE"),
+            sa.PrimaryKeyConstraint("id", name=op.f("pk_organizations_function_assignments")),
+            sa.UniqueConstraint("tenant_id", "identity_id", "function_id", "organization_unit_id", name="uq_organizations_function_assignments_identity_scope"),
+        )
+    else:
+        columns = _columns("organizations_function_assignments")
+        if "identity_id" not in columns:
+            op.add_column("organizations_function_assignments", sa.Column("identity_id", sa.String(length=36), nullable=True))
+        op.execute(sa.text("UPDATE organizations_function_assignments SET identity_id = account_id WHERE identity_id IS NULL"))
+    for column in (
+        "account_id",
+        "acting_for_account_id",
+        "delegated_from_assignment_id",
+        "function_id",
+        "identity_id",
+        "organization_unit_id",
+        "tenant_id",
+    ):
+        _create_index_if_missing(op.f(f"ix_organizations_function_assignments_{column}"), "organizations_function_assignments", [column])
+    _create_index_if_missing(
+        "uq_organizations_function_assignments_identity_scope",
+        "organizations_function_assignments",
+        ["tenant_id", "identity_id", "function_id", "organization_unit_id"],
+        unique=True,
+    )
+
+
+def upgrade() -> None:
+    _create_unit_types()
+    _create_structures()
+    _create_relation_types()
+    _create_units()
+    _create_relations()
+    _create_function_types()
+    _create_functions()
+    _create_function_assignments()
+
+
+def downgrade() -> None:
+    for table_name, indexes in (
+        ("organizations_function_assignments", ("uq_organizations_function_assignments_identity_scope",)),
+        ("organizations_relations", ("ix_organizations_relations_structure_source", "ix_organizations_relations_structure_target")),
+        ("organizations_relation_types", ("ix_organizations_relation_types_structure",)),
+    ):
+        for index_name in indexes:
+            _drop_index_if_exists(index_name, table_name)
+    for table_name in (
+        "organizations_relations",
+        "organizations_relation_types",
+        "organizations_structures",
+        "organizations_function_types",
+        "organizations_unit_types",
+    ):
+        if table_name in _tables():
+            op.drop_table(table_name)
--- a/src/govoplan_organizations/backend/migrations/versions/init.py
+++ b/src/govoplan_organizations/backend/migrations/versions/init.py
@@ -0,0 +1 @@
+"""Organizations Alembic revisions."""
--- a/webui/package.json
+++ b/webui/package.json
@@ -0,0 +1,31 @@
+{
+  "name": "@govoplan/organizations-webui",
+  "version": "0.1.6",
+  "private": true,
+  "type": "module",
+  "main": "src/index.ts",
+  "module": "src/index.ts",
+  "types": "src/index.ts",
+  "exports": {
+    ".": {
+      "types": "./src/index.ts",
+      "import": "./src/index.ts"
+    },
+    "./styles/organizations.css": "./src/styles/organizations.css"
+  },
+  "peerDependencies": {
+    "@govoplan/core-webui": "^0.1.6",
+    "@vitejs/plugin-react": "^4.3.4",
+    "lucide-react": "^1.23.0",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
+    "react-router-dom": "^7.1.1",
+    "typescript": "^5.7.2",
+    "vite": "^6.0.6"
+  },
+  "peerDependenciesMeta": {
+    "@govoplan/core-webui": {
+      "optional": true
+    }
+  }
+}
--- a/webui/src/api/organizations.ts
+++ b/webui/src/api/organizations.ts
@@ -0,0 +1,270 @@
+import { apiFetch, type ApiSettings } from "@govoplan/core-webui";
+
+export type OrganizationUnitTypeItem = {
+  id: string;
+  tenant_id: string;
+  slug: string;
+  name: string;
+  description?: string | null;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationStructureKind = "hierarchy" | "network" | "membership" | "classification";
+
+export type OrganizationStructureItem = {
+  id: string;
+  tenant_id: string;
+  slug: string;
+  name: string;
+  description?: string | null;
+  structure_kind: OrganizationStructureKind | string;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationRelationTypeItem = {
+  id: string;
+  tenant_id: string;
+  structure_id?: string | null;
+  slug: string;
+  name: string;
+  description?: string | null;
+  source_unit_type_id?: string | null;
+  target_unit_type_id?: string | null;
+  is_hierarchical: boolean;
+  allow_cycles: boolean;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationUnitItem = {
+  id: string;
+  tenant_id: string;
+  unit_type_id?: string | null;
+  parent_id?: string | null;
+  slug: string;
+  name: string;
+  description?: string | null;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationRelationItem = {
+  id: string;
+  tenant_id: string;
+  structure_id: string;
+  relation_type_id: string;
+  source_unit_id: string;
+  target_unit_id: string;
+  valid_from?: string | null;
+  valid_until?: string | null;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationFunctionTypeItem = {
+  id: string;
+  tenant_id: string;
+  slug: string;
+  name: string;
+  description?: string | null;
+  organization_unit_type_id?: string | null;
+  delegable: boolean;
+  act_in_place_allowed: boolean;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationFunctionItem = {
+  id: string;
+  tenant_id: string;
+  function_type_id?: string | null;
+  organization_unit_id: string;
+  slug: string;
+  name: string;
+  description?: string | null;
+  delegable: boolean;
+  act_in_place_allowed: boolean;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationFunctionAssignmentItem = {
+  id: string;
+  tenant_id: string;
+  identity_id: string;
+  account_id?: string | null;
+  function_id: string;
+  organization_unit_id: string;
+  applies_to_subunits: boolean;
+  source: string;
+  delegated_from_assignment_id?: string | null;
+  acting_for_account_id?: string | null;
+  valid_from?: string | null;
+  valid_until?: string | null;
+  is_active: boolean;
+  settings: Record<string, unknown>;
+  created_at: string;
+  updated_at: string;
+};
+
+export type OrganizationModel = {
+  unit_types: OrganizationUnitTypeItem[];
+  structures: OrganizationStructureItem[];
+  relation_types: OrganizationRelationTypeItem[];
+  units: OrganizationUnitItem[];
+  relations: OrganizationRelationItem[];
+  function_types: OrganizationFunctionTypeItem[];
+  functions: OrganizationFunctionItem[];
+  function_assignments: OrganizationFunctionAssignmentItem[];
+};
+
+export type SluggedCreatePayload = {
+  slug?: string | null;
+  name: string;
+  description?: string | null;
+  is_active?: boolean;
+  settings?: Record<string, unknown>;
+};
+
+export type StructureCreatePayload = SluggedCreatePayload & {
+  structure_kind: OrganizationStructureKind;
+};
+
+export type RelationTypeCreatePayload = SluggedCreatePayload & {
+  structure_id?: string | null;
+  source_unit_type_id?: string | null;
+  target_unit_type_id?: string | null;
+  is_hierarchical: boolean;
+  allow_cycles: boolean;
+};
+
+export type UnitCreatePayload = SluggedCreatePayload & {
+  unit_type_id?: string | null;
+  parent_id?: string | null;
+};
+
+export type RelationCreatePayload = {
+  structure_id: string;
+  relation_type_id: string;
+  source_unit_id: string;
+  target_unit_id: string;
+  is_active?: boolean;
+  settings?: Record<string, unknown>;
+};
+
+export type FunctionTypeCreatePayload = SluggedCreatePayload & {
+  organization_unit_type_id?: string | null;
+  delegable: boolean;
+  act_in_place_allowed: boolean;
+};
+
+export type FunctionCreatePayload = SluggedCreatePayload & {
+  organization_unit_id: string;
+  function_type_id?: string | null;
+  delegable?: boolean | null;
+  act_in_place_allowed?: boolean | null;
+};
+
+export type FunctionAssignmentCreatePayload = {
+  identity_id: string;
+  account_id?: string | null;
+  function_id: string;
+  applies_to_subunits: boolean;
+  source: string;
+  delegated_from_assignment_id?: string | null;
+  acting_for_account_id?: string | null;
+  is_active?: boolean;
+  settings?: Record<string, unknown>;
+};
+
+function post<T, P extends Record<string, unknown>>(settings: ApiSettings, path: string, payload: P): Promise<T> {
+  return apiFetch<T>(settings, path, { method: "POST", body: JSON.stringify(payload) });
+}
+
+function patch<T, P extends Record<string, unknown>>(settings: ApiSettings, path: string, payload: P): Promise<T> {
+  return apiFetch<T>(settings, path, { method: "PATCH", body: JSON.stringify(payload) });
+}
+
+export function getOrganizationModel(settings: ApiSettings): Promise<OrganizationModel> {
+  return apiFetch<OrganizationModel>(settings, "/api/v1/organizations/model");
+}
+
+export function createUnitType(settings: ApiSettings, payload: SluggedCreatePayload): Promise<OrganizationUnitTypeItem> {
+  return post(settings, "/api/v1/organizations/unit-types", payload);
+}
+
+export function patchUnitType(settings: ApiSettings, id: string, payload: Partial<SluggedCreatePayload>): Promise<OrganizationUnitTypeItem> {
+  return patch(settings, `/api/v1/organizations/unit-types/${encodeURIComponent(id)}`, payload);
+}
+
+export function createStructure(settings: ApiSettings, payload: StructureCreatePayload): Promise<OrganizationStructureItem> {
+  return post(settings, "/api/v1/organizations/structures", payload);
+}
+
+export function patchStructure(settings: ApiSettings, id: string, payload: Partial<StructureCreatePayload>): Promise<OrganizationStructureItem> {
+  return patch(settings, `/api/v1/organizations/structures/${encodeURIComponent(id)}`, payload);
+}
+
+export function createRelationType(settings: ApiSettings, payload: RelationTypeCreatePayload): Promise<OrganizationRelationTypeItem> {
+  return post(settings, "/api/v1/organizations/relation-types", payload);
+}
+
+export function patchRelationType(settings: ApiSettings, id: string, payload: Partial<RelationTypeCreatePayload>): Promise<OrganizationRelationTypeItem> {
+  return patch(settings, `/api/v1/organizations/relation-types/${encodeURIComponent(id)}`, payload);
+}
+
+export function createUnit(settings: ApiSettings, payload: UnitCreatePayload): Promise<OrganizationUnitItem> {
+  return post(settings, "/api/v1/organizations/units", payload);
+}
+
+export function patchUnit(settings: ApiSettings, id: string, payload: Partial<UnitCreatePayload>): Promise<OrganizationUnitItem> {
+  return patch(settings, `/api/v1/organizations/units/${encodeURIComponent(id)}`, payload);
+}
+
+export function createRelation(settings: ApiSettings, payload: RelationCreatePayload): Promise<OrganizationRelationItem> {
+  return post(settings, "/api/v1/organizations/relations", payload);
+}
+
+export function patchRelation(settings: ApiSettings, id: string, payload: Partial<RelationCreatePayload>): Promise<OrganizationRelationItem> {
+  return patch(settings, `/api/v1/organizations/relations/${encodeURIComponent(id)}`, payload);
+}
+
+export function createFunctionType(settings: ApiSettings, payload: FunctionTypeCreatePayload): Promise<OrganizationFunctionTypeItem> {
+  return post(settings, "/api/v1/organizations/function-types", payload);
+}
+
+export function patchFunctionType(settings: ApiSettings, id: string, payload: Partial<FunctionTypeCreatePayload>): Promise<OrganizationFunctionTypeItem> {
+  return patch(settings, `/api/v1/organizations/function-types/${encodeURIComponent(id)}`, payload);
+}
+
+export function createFunction(settings: ApiSettings, payload: FunctionCreatePayload): Promise<OrganizationFunctionItem> {
+  return post(settings, "/api/v1/organizations/functions", payload);
+}
+
+export function patchFunction(settings: ApiSettings, id: string, payload: Partial<FunctionCreatePayload>): Promise<OrganizationFunctionItem> {
+  return patch(settings, `/api/v1/organizations/functions/${encodeURIComponent(id)}`, payload);
+}
+
+export function createFunctionAssignment(settings: ApiSettings, payload: FunctionAssignmentCreatePayload): Promise<OrganizationFunctionAssignmentItem> {
+  return post(settings, "/api/v1/organizations/function-assignments", payload);
+}
+
+export function patchFunctionAssignment(settings: ApiSettings, id: string, payload: Partial<FunctionAssignmentCreatePayload>): Promise<OrganizationFunctionAssignmentItem> {
+  return patch(settings, `/api/v1/organizations/function-assignments/${encodeURIComponent(id)}`, payload);
+}
--- a/webui/src/features/organizations/OrganizationsAdminPanel.tsx
+++ b/webui/src/features/organizations/OrganizationsAdminPanel.tsx
@@ -0,0 +1,18 @@
+import type { ApiSettings, AuthInfo } from "@govoplan/core-webui";
+import OrganizationsPage, { type OrganizationSection } from "./OrganizationsPage";
+
+const MODEL_SECTIONS: OrganizationSection[] = ["model"];
+
+export default function OrganizationsAdminPanel({ settings, auth }: { settings: ApiSettings; auth: AuthInfo }) {
+  return (
+    <OrganizationsPage
+      settings={settings}
+      auth={auth}
+      mode="admin"
+      initialSection="model"
+      availableSections={MODEL_SECTIONS}
+      title="i18n:govoplan-organizations.organization_model.4f924c0e"
+      description="i18n:govoplan-organizations.organization_model_admin_description.35dc9f10"
+    />
+  );
+}
--- a/webui/src/features/organizations/OrganizationsPage.tsx
+++ b/webui/src/features/organizations/OrganizationsPage.tsx
@@ -0,0 +1,974 @@
+import { useCallback, useEffect, useMemo, useState, type FormEvent } from "react";
+import { RefreshCw, Save, XCircle } from "lucide-react";
+import {
+  ApiError,
+  Button,
+  Card,
+  DataGrid,
+  DismissibleAlert,
+  FormField,
+  LoadingFrame,
+  ModuleSubnav,
+  PageTitle,
+  StatusBadge,
+  hasScope,
+  useUnsavedDraftGuard,
+  type ApiSettings,
+  type AuthInfo,
+  type DataGridColumn,
+  type ModuleSubnavGroup
+} from "@govoplan/core-webui";
+import {
+  createFunction,
+  createFunctionAssignment,
+  createFunctionType,
+  createRelation,
+  createRelationType,
+  createStructure,
+  createUnit,
+  createUnitType,
+  getOrganizationModel,
+  patchFunction,
+  patchFunctionAssignment,
+  patchFunctionType,
+  patchRelation,
+  patchRelationType,
+  patchStructure,
+  patchUnit,
+  patchUnitType,
+  type FunctionAssignmentCreatePayload,
+  type FunctionCreatePayload,
+  type FunctionTypeCreatePayload,
+  type OrganizationFunctionAssignmentItem,
+  type OrganizationFunctionItem,
+  type OrganizationFunctionTypeItem,
+  type OrganizationModel,
+  type OrganizationRelationItem,
+  type OrganizationRelationTypeItem,
+  type OrganizationStructureItem,
+  type OrganizationStructureKind,
+  type OrganizationUnitItem,
+  type OrganizationUnitTypeItem,
+  type RelationCreatePayload,
+  type RelationTypeCreatePayload,
+  type SluggedCreatePayload,
+  type StructureCreatePayload,
+  type UnitCreatePayload
+} from "../../api/organizations";
+
+export type OrganizationSection = "model" | "units" | "relations" | "functions" | "assignments";
+type OrganizationsPageMode = "workspace" | "admin";
+
+type OrganizationsPageProps = {
+  settings: ApiSettings;
+  auth: AuthInfo;
+  mode?: OrganizationsPageMode;
+  initialSection?: OrganizationSection;
+  availableSections?: OrganizationSection[];
+  title?: string;
+  description?: string;
+};
+
+type SluggedDraft = {
+  name: string;
+  slug: string;
+  description: string;
+  is_active: boolean;
+};
+
+type StructureDraft = SluggedDraft & {
+  structure_kind: OrganizationStructureKind;
+};
+
+type RelationTypeDraft = SluggedDraft & {
+  structure_id: string;
+  source_unit_type_id: string;
+  target_unit_type_id: string;
+  is_hierarchical: boolean;
+  allow_cycles: boolean;
+};
+
+type UnitDraft = SluggedDraft & {
+  unit_type_id: string;
+  parent_id: string;
+};
+
+type RelationDraft = {
+  structure_id: string;
+  relation_type_id: string;
+  source_unit_id: string;
+  target_unit_id: string;
+  is_active: boolean;
+};
+
+type FunctionTypeDraft = SluggedDraft & {
+  organization_unit_type_id: string;
+  delegable: boolean;
+  act_in_place_allowed: boolean;
+};
+
+type FunctionDraft = SluggedDraft & {
+  organization_unit_id: string;
+  function_type_id: string;
+  delegable: boolean;
+  act_in_place_allowed: boolean;
+};
+
+type AssignmentDraft = {
+  identity_id: string;
+  account_id: string;
+  function_id: string;
+  applies_to_subunits: boolean;
+  source: string;
+  delegated_from_assignment_id: string;
+  acting_for_account_id: string;
+  is_active: boolean;
+};
+
+type ActiveItem = {
+  id: string;
+  is_active: boolean;
+};
+
+const EMPTY_MODEL: OrganizationModel = {
+  unit_types: [],
+  structures: [],
+  relation_types: [],
+  units: [],
+  relations: [],
+  function_types: [],
+  functions: [],
+  function_assignments: []
+};
+
+const SECTION_GROUPS: ModuleSubnavGroup<OrganizationSection>[] = [
+  {
+    title: "i18n:govoplan-organizations.organizations.220edf64",
+    items: [
+      { id: "model", label: "i18n:govoplan-organizations.meta_model.7398487c", primary: true },
+      { id: "units", label: "i18n:govoplan-organizations.units.e14d0d92" },
+      { id: "relations", label: "i18n:govoplan-organizations.relations.1c796711" },
+      { id: "functions", label: "i18n:govoplan-organizations.functions.805dc49b" },
+      { id: "assignments", label: "i18n:govoplan-organizations.assignments.278f513e" }
+    ]
+  }
+];
+
+const STRUCTURE_KINDS: Array<{ value: OrganizationStructureKind; label: string }> = [
+  { value: "hierarchy", label: "i18n:govoplan-organizations.hierarchy.74797f37" },
+  { value: "network", label: "i18n:govoplan-organizations.network.a24d31c3" },
+  { value: "membership", label: "i18n:govoplan-organizations.membership.4531d86d" },
+  { value: "classification", label: "i18n:govoplan-organizations.classification.3e9f6c3a" }
+];
+
+const ALL_SECTIONS: OrganizationSection[] = ["model", "units", "relations", "functions", "assignments"];
+
+function emptySluggedDraft(): SluggedDraft {
+  return { name: "", slug: "", description: "", is_active: true };
+}
+
+function emptyStructureDraft(): StructureDraft {
+  return { ...emptySluggedDraft(), structure_kind: "hierarchy" };
+}
+
+function emptyRelationTypeDraft(): RelationTypeDraft {
+  return {
+    ...emptySluggedDraft(),
+    structure_id: "",
+    source_unit_type_id: "",
+    target_unit_type_id: "",
+    is_hierarchical: true,
+    allow_cycles: false
+  };
+}
+
+function emptyUnitDraft(): UnitDraft {
+  return { ...emptySluggedDraft(), unit_type_id: "", parent_id: "" };
+}
+
+function emptyRelationDraft(): RelationDraft {
+  return { structure_id: "", relation_type_id: "", source_unit_id: "", target_unit_id: "", is_active: true };
+}
+
+function emptyFunctionTypeDraft(): FunctionTypeDraft {
+  return { ...emptySluggedDraft(), organization_unit_type_id: "", delegable: false, act_in_place_allowed: false };
+}
+
+function emptyFunctionDraft(): FunctionDraft {
+  return { ...emptySluggedDraft(), organization_unit_id: "", function_type_id: "", delegable: false, act_in_place_allowed: false };
+}
+
+function emptyAssignmentDraft(): AssignmentDraft {
+  return {
+    identity_id: "",
+    account_id: "",
+    function_id: "",
+    applies_to_subunits: false,
+    source: "direct",
+    delegated_from_assignment_id: "",
+    acting_for_account_id: "",
+    is_active: true
+  };
+}
+
+function textOrNull(value: string): string | null {
+  const trimmed = value.trim();
+  return trimmed ? trimmed : null;
+}
+
+function sluggedPayload(draft: SluggedDraft): SluggedCreatePayload {
+  return {
+    name: draft.name.trim(),
+    slug: textOrNull(draft.slug),
+    description: textOrNull(draft.description),
+    is_active: draft.is_active,
+    settings: {}
+  };
+}
+
+function isSluggedDirty(draft: SluggedDraft): boolean {
+  return draft.name.trim() !== "" || draft.slug.trim() !== "" || draft.description.trim() !== "" || !draft.is_active;
+}
+
+function isRelationTypeDirty(draft: RelationTypeDraft): boolean {
+  return isSluggedDirty(draft) || Boolean(draft.structure_id || draft.source_unit_type_id || draft.target_unit_type_id) || !draft.is_hierarchical || draft.allow_cycles;
+}
+
+function isUnitDirty(draft: UnitDraft): boolean {
+  return isSluggedDirty(draft) || Boolean(draft.unit_type_id || draft.parent_id);
+}
+
+function isRelationDirty(draft: RelationDraft): boolean {
+  return Boolean(draft.structure_id || draft.relation_type_id || draft.source_unit_id || draft.target_unit_id) || !draft.is_active;
+}
+
+function isFunctionTypeDirty(draft: FunctionTypeDraft): boolean {
+  return isSluggedDirty(draft) || Boolean(draft.organization_unit_type_id) || draft.delegable || draft.act_in_place_allowed;
+}
+
+function isFunctionDirty(draft: FunctionDraft): boolean {
+  return isSluggedDirty(draft) || Boolean(draft.organization_unit_id || draft.function_type_id) || draft.delegable || draft.act_in_place_allowed;
+}
+
+function isAssignmentDirty(draft: AssignmentDraft): boolean {
+  return Boolean(
+    draft.identity_id.trim() ||
+    draft.account_id.trim() ||
+    draft.function_id ||
+    draft.applies_to_subunits ||
+    draft.source.trim() !== "direct" ||
+    draft.delegated_from_assignment_id ||
+    draft.acting_for_account_id ||
+    !draft.is_active
+  );
+}
+
+function mapById<T extends { id: string }>(items: T[]): Map<string, T> {
+  return new Map(items.map((item) => [item.id, item]));
+}
+
+function sectionGroupsFor(sections: ReadonlySet<OrganizationSection>): ModuleSubnavGroup<OrganizationSection>[] {
+  return SECTION_GROUPS.map((group) => ({
+    ...group,
+    items: group.items.filter((item) => sections.has(item.id))
+  })).filter((group) => group.items.length > 0);
+}
+
+function apiErrorMessage(error: unknown): string {
+  if (error instanceof ApiError) return error.message;
+  if (error instanceof Error) return error.message;
+  return String(error);
+}
+
+function optionalLabel(label: string | null | undefined): JSX.Element {
+  return label ? <span>{label}</span> : <span className="organizations-empty">i18n:govoplan-organizations.none.334c4a4c</span>;
+}
+
+function activeStatus(active: boolean): JSX.Element {
+  return <StatusBadge status={active ? "success" : "inactive"} label={active ? "i18n:govoplan-organizations.active.a733b809" : "i18n:govoplan-organizations.inactive.09af574c"} />;
+}
+
+function ActiveToggleButton({ item, disabled, onToggle }: { item: ActiveItem; disabled: boolean; onToggle: () => void }) {
+  const label = item.is_active ? "i18n:govoplan-organizations.deactivate.46ab070d" : "i18n:govoplan-organizations.reactivate.58f2855d";
+  return (
+    <Button type="button" variant={item.is_active ? "secondary" : "primary"} disabled={disabled} onClick={onToggle} title={label}>
+      {label}
+    </Button>
+  );
+}
+
+function SluggedFields({
+  draft,
+  onChange,
+  disabled
+}: {
+  draft: SluggedDraft;
+  onChange: (next: SluggedDraft) => void;
+  disabled: boolean;
+}) {
+  return (
+    <>
+      <FormField label="i18n:govoplan-organizations.name.709a2322">
+        <input value={draft.name} disabled={disabled} onChange={(event) => onChange({ ...draft, name: event.target.value })} />
+      </FormField>
+      <FormField label="i18n:govoplan-organizations.slug.094da9b9">
+        <input value={draft.slug} disabled={disabled} onChange={(event) => onChange({ ...draft, slug: event.target.value })} />
+      </FormField>
+      <div className="wide">
+        <FormField label="i18n:govoplan-organizations.description.55f8ebc8">
+          <textarea rows={3} value={draft.description} disabled={disabled} onChange={(event) => onChange({ ...draft, description: event.target.value })} />
+        </FormField>
+      </div>
+      <label className="organizations-inline-check wide">
+        <input type="checkbox" checked={draft.is_active} disabled={disabled} onChange={(event) => onChange({ ...draft, is_active: event.target.checked })} />
+        <span>i18n:govoplan-organizations.active.a733b809</span>
+      </label>
+    </>
+  );
+}
+
+export default function OrganizationsPage({
+  settings,
+  auth,
+  mode = "workspace",
+  initialSection = "model",
+  availableSections = ALL_SECTIONS,
+  title = "i18n:govoplan-organizations.organizations.220edf64",
+  description = "i18n:govoplan-organizations.organizations_intro.4e67c4bb"
+}: OrganizationsPageProps) {
+  const sectionSet = useMemo(() => new Set(availableSections.length ? availableSections : ALL_SECTIONS), [availableSections]);
+  const firstAvailableSection = availableSections.find((section) => sectionSet.has(section)) ?? "model";
+  const [active, setActive] = useState<OrganizationSection>(sectionSet.has(initialSection) ? initialSection : firstAvailableSection);
+  const visibleSectionGroups = useMemo(() => sectionGroupsFor(sectionSet), [sectionSet]);
+  const [model, setModel] = useState<OrganizationModel>(EMPTY_MODEL);
+  const [loading, setLoading] = useState(true);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState("");
+  const [success, setSuccess] = useState("");
+
+  const [unitTypeDraft, setUnitTypeDraft] = useState<SluggedDraft>(() => emptySluggedDraft());
+  const [structureDraft, setStructureDraft] = useState<StructureDraft>(() => emptyStructureDraft());
+  const [relationTypeDraft, setRelationTypeDraft] = useState<RelationTypeDraft>(() => emptyRelationTypeDraft());
+  const [unitDraft, setUnitDraft] = useState<UnitDraft>(() => emptyUnitDraft());
+  const [relationDraft, setRelationDraft] = useState<RelationDraft>(() => emptyRelationDraft());
+  const [functionTypeDraft, setFunctionTypeDraft] = useState<FunctionTypeDraft>(() => emptyFunctionTypeDraft());
+  const [functionDraft, setFunctionDraft] = useState<FunctionDraft>(() => emptyFunctionDraft());
+  const [assignmentDraft, setAssignmentDraft] = useState<AssignmentDraft>(() => emptyAssignmentDraft());
+
+  const canWriteModel = hasScope(auth, "organizations:model:write");
+  const canWriteUnits = hasScope(auth, "organizations:unit:write");
+  const canWriteFunctions = hasScope(auth, "organizations:function:write");
+  const canAssignFunctions = hasScope(auth, "organizations:function:assign");
+
+  const unitTypeById = useMemo(() => mapById(model.unit_types), [model.unit_types]);
+  const structureById = useMemo(() => mapById(model.structures), [model.structures]);
+  const relationTypeById = useMemo(() => mapById(model.relation_types), [model.relation_types]);
+  const unitById = useMemo(() => mapById(model.units), [model.units]);
+  const functionTypeById = useMemo(() => mapById(model.function_types), [model.function_types]);
+  const functionById = useMemo(() => mapById(model.functions), [model.functions]);
+
+  const hasDirtyDraft = isSluggedDirty(unitTypeDraft) ||
+    isSluggedDirty(structureDraft) ||
+    isRelationTypeDirty(relationTypeDraft) ||
+    isUnitDirty(unitDraft) ||
+    isRelationDirty(relationDraft) ||
+    isFunctionTypeDirty(functionTypeDraft) ||
+    isFunctionDirty(functionDraft) ||
+    isAssignmentDirty(assignmentDraft);
+
+  const loadModel = useCallback(async () => {
+    setLoading(true);
+    setError("");
+    try {
+      setModel(await getOrganizationModel(settings));
+    } catch (caught) {
+      setError(apiErrorMessage(caught));
+    } finally {
+      setLoading(false);
+    }
+  }, [settings]);
+
+  useEffect(() => {
+    void loadModel();
+  }, [loadModel]);
+
+  useEffect(() => {
+    if (!sectionSet.has(active)) setActive(firstAvailableSection);
+  }, [active, firstAvailableSection, sectionSet]);
+
+  const runAction = useCallback(async (action: () => Promise<unknown>, successMessage = ""): Promise<boolean> => {
+    setBusy(true);
+    setError("");
+    setSuccess("");
+    try {
+      await action();
+      if (successMessage) setSuccess(successMessage);
+      await loadModel();
+      return true;
+    } catch (caught) {
+      setError(apiErrorMessage(caught));
+      return false;
+    } finally {
+      setBusy(false);
+    }
+  }, [loadModel]);
+
+  const discardDrafts = useCallback(() => {
+    setUnitTypeDraft(emptySluggedDraft());
+    setStructureDraft(emptyStructureDraft());
+    setRelationTypeDraft(emptyRelationTypeDraft());
+    setUnitDraft(emptyUnitDraft());
+    setRelationDraft(emptyRelationDraft());
+    setFunctionTypeDraft(emptyFunctionTypeDraft());
+    setFunctionDraft(emptyFunctionDraft());
+    setAssignmentDraft(emptyAssignmentDraft());
+  }, []);
+
+  function rejectMissingName(): Promise<boolean> {
+    setError("i18n:govoplan-organizations.name_is_required.27cd3782");
+    return Promise.resolve(false);
+  }
+
+  function rejectMissingWritePermission(): Promise<boolean> {
+    setError("i18n:govoplan-organizations.write_permission_required.8b09fd67");
+    return Promise.resolve(false);
+  }
+
+  const submitUnitType = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canWriteModel) return rejectMissingWritePermission();
+    if (!unitTypeDraft.name.trim()) return rejectMissingName();
+    const ok = await runAction(() => createUnitType(settings, sluggedPayload(unitTypeDraft)), "i18n:govoplan-organizations.unit_type_added.e017dc8c");
+    if (ok) setUnitTypeDraft(emptySluggedDraft());
+    return ok;
+  }, [canWriteModel, runAction, settings, unitTypeDraft]);
+
+  const submitStructure = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canWriteModel) return rejectMissingWritePermission();
+    if (!structureDraft.name.trim()) return rejectMissingName();
+    const payload: StructureCreatePayload = { ...sluggedPayload(structureDraft), structure_kind: structureDraft.structure_kind };
+    const ok = await runAction(() => createStructure(settings, payload), "i18n:govoplan-organizations.structure_added.f6cf8e74");
+    if (ok) setStructureDraft(emptyStructureDraft());
+    return ok;
+  }, [canWriteModel, runAction, settings, structureDraft]);
+
+  const submitRelationType = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canWriteModel) return rejectMissingWritePermission();
+    if (!relationTypeDraft.name.trim()) return rejectMissingName();
+    const payload: RelationTypeCreatePayload = {
+      ...sluggedPayload(relationTypeDraft),
+      structure_id: textOrNull(relationTypeDraft.structure_id),
+      source_unit_type_id: textOrNull(relationTypeDraft.source_unit_type_id),
+      target_unit_type_id: textOrNull(relationTypeDraft.target_unit_type_id),
+      is_hierarchical: relationTypeDraft.is_hierarchical,
+      allow_cycles: relationTypeDraft.allow_cycles
+    };
+    const ok = await runAction(() => createRelationType(settings, payload), "i18n:govoplan-organizations.relation_type_added.6f1edff1");
+    if (ok) setRelationTypeDraft(emptyRelationTypeDraft());
+    return ok;
+  }, [canWriteModel, relationTypeDraft, runAction, settings]);
+
+  const submitUnit = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canWriteUnits) return rejectMissingWritePermission();
+    if (!unitDraft.name.trim()) return rejectMissingName();
+    const payload: UnitCreatePayload = {
+      ...sluggedPayload(unitDraft),
+      unit_type_id: textOrNull(unitDraft.unit_type_id),
+      parent_id: textOrNull(unitDraft.parent_id)
+    };
+    const ok = await runAction(() => createUnit(settings, payload), "i18n:govoplan-organizations.unit_added.760a8512");
+    if (ok) setUnitDraft(emptyUnitDraft());
+    return ok;
+  }, [canWriteUnits, runAction, settings, unitDraft]);
+
+  const submitRelation = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canWriteUnits) return rejectMissingWritePermission();
+    if (!relationDraft.structure_id || !relationDraft.relation_type_id || !relationDraft.source_unit_id || !relationDraft.target_unit_id) {
+      setError("i18n:govoplan-organizations.select_structure.c10f551c");
+      return false;
+    }
+    const payload: RelationCreatePayload = { ...relationDraft, settings: {} };
+    const ok = await runAction(() => createRelation(settings, payload), "i18n:govoplan-organizations.relation_added.ca90461a");
+    if (ok) setRelationDraft(emptyRelationDraft());
+    return ok;
+  }, [canWriteUnits, relationDraft, runAction, settings]);
+
+  const submitFunctionType = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canWriteModel) return rejectMissingWritePermission();
+    if (!functionTypeDraft.name.trim()) return rejectMissingName();
+    const payload: FunctionTypeCreatePayload = {
+      ...sluggedPayload(functionTypeDraft),
+      organization_unit_type_id: textOrNull(functionTypeDraft.organization_unit_type_id),
+      delegable: functionTypeDraft.delegable,
+      act_in_place_allowed: functionTypeDraft.act_in_place_allowed
+    };
+    const ok = await runAction(() => createFunctionType(settings, payload), "i18n:govoplan-organizations.function_type_added.2cd9e899");
+    if (ok) setFunctionTypeDraft(emptyFunctionTypeDraft());
+    return ok;
+  }, [canWriteModel, functionTypeDraft, runAction, settings]);
+
+  const submitFunction = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canWriteFunctions) return rejectMissingWritePermission();
+    if (!functionDraft.name.trim()) return rejectMissingName();
+    if (!functionDraft.organization_unit_id) {
+      setError("i18n:govoplan-organizations.select_unit.013bf13a");
+      return false;
+    }
+    const payload: FunctionCreatePayload = {
+      ...sluggedPayload(functionDraft),
+      organization_unit_id: functionDraft.organization_unit_id,
+      function_type_id: textOrNull(functionDraft.function_type_id),
+      delegable: functionDraft.delegable,
+      act_in_place_allowed: functionDraft.act_in_place_allowed
+    };
+    const ok = await runAction(() => createFunction(settings, payload), "i18n:govoplan-organizations.function_added.e2266702");
+    if (ok) setFunctionDraft(emptyFunctionDraft());
+    return ok;
+  }, [canWriteFunctions, functionDraft, runAction, settings]);
+
+  const submitAssignment = useCallback(async (event?: FormEvent): Promise<boolean> => {
+    event?.preventDefault();
+    if (!canAssignFunctions) return rejectMissingWritePermission();
+    if (!assignmentDraft.identity_id.trim() || !assignmentDraft.function_id) {
+      setError("i18n:govoplan-organizations.select_function.4895a67d");
+      return false;
+    }
+    const payload: FunctionAssignmentCreatePayload = {
+      identity_id: assignmentDraft.identity_id.trim(),
+      account_id: textOrNull(assignmentDraft.account_id),
+      function_id: assignmentDraft.function_id,
+      applies_to_subunits: assignmentDraft.applies_to_subunits,
+      source: assignmentDraft.source.trim() || "direct",
+      delegated_from_assignment_id: textOrNull(assignmentDraft.delegated_from_assignment_id),
+      acting_for_account_id: textOrNull(assignmentDraft.acting_for_account_id),
+      is_active: assignmentDraft.is_active,
+      settings: {}
+    };
+    const ok = await runAction(() => createFunctionAssignment(settings, payload), "i18n:govoplan-organizations.assignment_added.94263d1b");
+    if (ok) setAssignmentDraft(emptyAssignmentDraft());
+    return ok;
+  }, [assignmentDraft, canAssignFunctions, runAction, settings]);
+
+  const saveDrafts = useCallback(async (): Promise<boolean> => {
+    if (isSluggedDirty(unitTypeDraft) && !(await submitUnitType())) return false;
+    if (isSluggedDirty(structureDraft) && !(await submitStructure())) return false;
+    if (isRelationTypeDirty(relationTypeDraft) && !(await submitRelationType())) return false;
+    if (isUnitDirty(unitDraft) && !(await submitUnit())) return false;
+    if (isRelationDirty(relationDraft) && !(await submitRelation())) return false;
+    if (isFunctionTypeDirty(functionTypeDraft) && !(await submitFunctionType())) return false;
+    if (isFunctionDirty(functionDraft) && !(await submitFunction())) return false;
+    if (isAssignmentDirty(assignmentDraft) && !(await submitAssignment())) return false;
+    return true;
+  }, [
+    assignmentDraft,
+    functionDraft,
+    functionTypeDraft,
+    relationDraft,
+    relationTypeDraft,
+    structureDraft,
+    submitAssignment,
+    submitFunction,
+    submitFunctionType,
+    submitRelation,
+    submitRelationType,
+    submitStructure,
+    submitUnit,
+    submitUnitType,
+    unitDraft,
+    unitTypeDraft
+  ]);
+
+  useUnsavedDraftGuard({
+    dirty: hasDirtyDraft,
+    onSave: saveDrafts,
+    onDiscard: discardDrafts,
+    title: "i18n:govoplan-core.unsaved_changes.29267269",
+    message: "i18n:govoplan-core.this_page_has_unsaved_changes_save_them_before_l.419a9d8b"
+  });
+
+  const toggleUnitType = useCallback((item: OrganizationUnitTypeItem) => {
+    void runAction(() => patchUnitType(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const toggleStructure = useCallback((item: OrganizationStructureItem) => {
+    void runAction(() => patchStructure(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const toggleRelationType = useCallback((item: OrganizationRelationTypeItem) => {
+    void runAction(() => patchRelationType(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const toggleUnit = useCallback((item: OrganizationUnitItem) => {
+    void runAction(() => patchUnit(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const toggleRelation = useCallback((item: OrganizationRelationItem) => {
+    void runAction(() => patchRelation(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const toggleFunctionType = useCallback((item: OrganizationFunctionTypeItem) => {
+    void runAction(() => patchFunctionType(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const toggleFunction = useCallback((item: OrganizationFunctionItem) => {
+    void runAction(() => patchFunction(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const toggleAssignment = useCallback((item: OrganizationFunctionAssignmentItem) => {
+    void runAction(() => patchFunctionAssignment(settings, item.id, { is_active: !item.is_active }));
+  }, [runAction, settings]);
+
+  const unitTypeColumns: DataGridColumn<OrganizationUnitTypeItem>[] = [
+    { id: "name", header: "i18n:govoplan-organizations.name.709a2322", minWidth: 180, sortable: true, filterable: true, value: (row) => row.name },
+    { id: "slug", header: "i18n:govoplan-organizations.slug.094da9b9", width: 160, sortable: true, filterable: true, value: (row) => row.slug },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "description", header: "i18n:govoplan-organizations.description.55f8ebc8", minWidth: 220, value: (row) => row.description ?? "" },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canWriteModel || busy} onToggle={() => toggleUnitType(row)} /> }
+  ];
+
+  const structureColumns: DataGridColumn<OrganizationStructureItem>[] = [
+    { id: "name", header: "i18n:govoplan-organizations.name.709a2322", minWidth: 180, sortable: true, filterable: true, value: (row) => row.name },
+    { id: "kind", header: "i18n:govoplan-organizations.kind.794c9d9c", width: 140, sortable: true, filterable: true, value: (row) => row.structure_kind },
+    { id: "slug", header: "i18n:govoplan-organizations.slug.094da9b9", width: 160, value: (row) => row.slug },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canWriteModel || busy} onToggle={() => toggleStructure(row)} /> }
+  ];
+
+  const relationTypeColumns: DataGridColumn<OrganizationRelationTypeItem>[] = [
+    { id: "name", header: "i18n:govoplan-organizations.name.709a2322", minWidth: 180, value: (row) => row.name, sortable: true, filterable: true },
+    { id: "structure", header: "i18n:govoplan-organizations.structure.7732fb0b", minWidth: 170, render: (row) => optionalLabel(structureById.get(row.structure_id || "")?.name) },
+    { id: "source", header: "i18n:govoplan-organizations.source_unit.2fbd8baa", minWidth: 170, render: (row) => optionalLabel(unitTypeById.get(row.source_unit_type_id || "")?.name) },
+    { id: "target", header: "i18n:govoplan-organizations.target_unit.a1507d86", minWidth: 170, render: (row) => optionalLabel(unitTypeById.get(row.target_unit_type_id || "")?.name) },
+    { id: "hierarchical", header: "i18n:govoplan-organizations.hierarchical.8964f313", width: 130, render: (row) => activeStatus(row.is_hierarchical) },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canWriteModel || busy} onToggle={() => toggleRelationType(row)} /> }
+  ];
+
+  const unitColumns: DataGridColumn<OrganizationUnitItem>[] = [
+    { id: "name", header: "i18n:govoplan-organizations.name.709a2322", minWidth: 190, sortable: true, filterable: true, value: (row) => row.name },
+    { id: "type", header: "i18n:govoplan-organizations.type.599dcce2", minWidth: 160, render: (row) => optionalLabel(unitTypeById.get(row.unit_type_id || "")?.name) },
+    { id: "parent", header: "i18n:govoplan-organizations.parent_unit.1986c35e", minWidth: 180, render: (row) => optionalLabel(unitById.get(row.parent_id || "")?.name) },
+    { id: "slug", header: "i18n:govoplan-organizations.slug.094da9b9", width: 160, value: (row) => row.slug },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canWriteUnits || busy} onToggle={() => toggleUnit(row)} /> }
+  ];
+
+  const relationColumns: DataGridColumn<OrganizationRelationItem>[] = [
+    { id: "structure", header: "i18n:govoplan-organizations.structure.7732fb0b", minWidth: 170, render: (row) => optionalLabel(structureById.get(row.structure_id)?.name) },
+    { id: "type", header: "i18n:govoplan-organizations.relation_type.d0aee2e7", minWidth: 170, render: (row) => optionalLabel(relationTypeById.get(row.relation_type_id)?.name) },
+    { id: "source", header: "i18n:govoplan-organizations.source_unit.2fbd8baa", minWidth: 190, render: (row) => optionalLabel(unitById.get(row.source_unit_id)?.name) },
+    { id: "target", header: "i18n:govoplan-organizations.target_unit.a1507d86", minWidth: 190, render: (row) => optionalLabel(unitById.get(row.target_unit_id)?.name) },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canWriteUnits || busy} onToggle={() => toggleRelation(row)} /> }
+  ];
+
+  const functionTypeColumns: DataGridColumn<OrganizationFunctionTypeItem>[] = [
+    { id: "name", header: "i18n:govoplan-organizations.name.709a2322", minWidth: 180, sortable: true, filterable: true, value: (row) => row.name },
+    { id: "unitType", header: "i18n:govoplan-organizations.unit_type.9e62810d", minWidth: 180, render: (row) => optionalLabel(unitTypeById.get(row.organization_unit_type_id || "")?.name) },
+    { id: "delegable", header: "i18n:govoplan-organizations.delegable.b4f0137d", width: 120, render: (row) => activeStatus(row.delegable) },
+    { id: "actInPlace", header: "i18n:govoplan-organizations.act_in_place.49b942bd", width: 140, render: (row) => activeStatus(row.act_in_place_allowed) },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canWriteModel || busy} onToggle={() => toggleFunctionType(row)} /> }
+  ];
+
+  const functionColumns: DataGridColumn<OrganizationFunctionItem>[] = [
+    { id: "name", header: "i18n:govoplan-organizations.name.709a2322", minWidth: 180, sortable: true, filterable: true, value: (row) => row.name },
+    { id: "unit", header: "i18n:govoplan-organizations.unit.8fe4d595", minWidth: 190, render: (row) => optionalLabel(unitById.get(row.organization_unit_id)?.name) },
+    { id: "type", header: "i18n:govoplan-organizations.function_type.501fe7c0", minWidth: 180, render: (row) => optionalLabel(functionTypeById.get(row.function_type_id || "")?.name) },
+    { id: "delegable", header: "i18n:govoplan-organizations.delegable.b4f0137d", width: 120, render: (row) => activeStatus(row.delegable) },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canWriteFunctions || busy} onToggle={() => toggleFunction(row)} /> }
+  ];
+
+  const assignmentColumns: DataGridColumn<OrganizationFunctionAssignmentItem>[] = [
+    { id: "identity", header: "i18n:govoplan-organizations.identity_id.b6ef5010", minWidth: 220, render: (row) => <span className="organizations-id">{row.identity_id}</span> },
+    { id: "function", header: "i18n:govoplan-organizations.function.28822f3a", minWidth: 190, render: (row) => optionalLabel(functionById.get(row.function_id)?.name) },
+    { id: "unit", header: "i18n:govoplan-organizations.unit.8fe4d595", minWidth: 180, render: (row) => optionalLabel(unitById.get(row.organization_unit_id)?.name) },
+    { id: "subunits", header: "i18n:govoplan-organizations.applies_to_subunits.7a15f741", width: 150, render: (row) => activeStatus(row.applies_to_subunits) },
+    { id: "source", header: "i18n:govoplan-organizations.source.6da13add", width: 130, value: (row) => row.source },
+    { id: "status", header: "i18n:govoplan-organizations.status.bae7d5be", width: 120, render: (row) => activeStatus(row.is_active) },
+    { id: "actions", header: "", width: 130, sticky: "end", render: (row) => <ActiveToggleButton item={row} disabled={!canAssignFunctions || busy} onToggle={() => toggleAssignment(row)} /> }
+  ];
+
+  const canWriteActive = active === "model" ? canWriteModel : active === "units" || active === "relations" ? canWriteUnits : active === "functions" ? canWriteFunctions : canAssignFunctions;
+
+  const content = (
+        <div className={`${mode === "workspace" ? "content-pad " : ""}organizations-page ${mode === "admin" ? "organizations-admin-page" : ""}`.trim()}>
+          <div className="page-heading split organizations-heading">
+            <div>
+              <PageTitle loading={loading}>{title}</PageTitle>
+              <p>{description}</p>
+            </div>
+            <div className="organizations-toolbar">
+              <Button type="button" onClick={() => void loadModel()} disabled={loading || busy} title="i18n:govoplan-organizations.reload.cce71553">
+                <RefreshCw size={16} aria-hidden="true" /> i18n:govoplan-organizations.reload.cce71553
+              </Button>
+              {hasDirtyDraft && (
+                <>
+                  <Button type="button" onClick={() => void saveDrafts()} disabled={busy} title="i18n:govoplan-organizations.save_drafts.606f9401">
+                    <Save size={16} aria-hidden="true" /> i18n:govoplan-organizations.save_drafts.606f9401
+                  </Button>
+                  <Button type="button" variant="ghost" onClick={discardDrafts} disabled={busy} title="i18n:govoplan-organizations.discard_organization_drafts.766d5f46">
+                    <XCircle size={16} aria-hidden="true" /> i18n:govoplan-organizations.discard_organization_drafts.766d5f46
+                  </Button>
+                </>
+              )}
+            </div>
+          </div>
+
+          {error && <DismissibleAlert tone="danger" resetKey={error} floating>{error}</DismissibleAlert>}
+          {success && !error && <DismissibleAlert tone="success" resetKey={success} floating>{success}</DismissibleAlert>}
+          {!canWriteActive && <DismissibleAlert tone="warning" dismissible={false}>i18n:govoplan-organizations.write_permission_required.8b09fd67</DismissibleAlert>}
+
+          <LoadingFrame loading={loading || busy} label="i18n:govoplan-organizations.loading_organization_model.846aa317">
+            {active === "model" && renderModelSection()}
+            {active === "units" && renderUnitsSection()}
+            {active === "relations" && renderRelationsSection()}
+            {active === "functions" && renderFunctionsSection()}
+            {active === "assignments" && renderAssignmentsSection()}
+          </LoadingFrame>
+        </div>
+  );
+
+  if (mode === "admin") return content;
+
+  return (
+    <div className="workspace organizations-workspace">
+      <ModuleSubnav active={active} groups={visibleSectionGroups} onSelect={setActive} />
+      <main className="workspace-content">
+        {content}
+      </main>
+    </div>
+  );
+
+  function renderModelSection() {
+    return (
+      <div className="organizations-table-stack">
+        <div className="organizations-section-grid">
+          <Card title="i18n:govoplan-organizations.unit_types.c7afc174">
+            <form className="organizations-form-grid" onSubmit={(event) => void submitUnitType(event)}>
+              <SluggedFields draft={unitTypeDraft} onChange={setUnitTypeDraft} disabled={!canWriteModel || busy} />
+              <Button className="wide" type="submit" variant="primary" disabled={!canWriteModel || busy}>i18n:govoplan-organizations.add_unit_type.58f2c05a</Button>
+            </form>
+          </Card>
+          <Card title="i18n:govoplan-organizations.unit_types.c7afc174">
+            <DataGrid id="organizations-unit-types" rows={model.unit_types} columns={unitTypeColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_unit_types_found.c81fb2a7" initialFit="container" />
+          </Card>
+        </div>
+        <div className="organizations-section-grid">
+          <Card title="i18n:govoplan-organizations.structures.f9b7f3b4">
+            <form className="organizations-form-grid" onSubmit={(event) => void submitStructure(event)}>
+              <SluggedFields draft={structureDraft} onChange={setStructureDraft} disabled={!canWriteModel || busy} />
+              <FormField label="i18n:govoplan-organizations.kind.794c9d9c">
+                <select value={structureDraft.structure_kind} disabled={!canWriteModel || busy} onChange={(event) => setStructureDraft({ ...structureDraft, structure_kind: event.target.value as OrganizationStructureKind })}>
+                  {STRUCTURE_KINDS.map((item) => <option key={item.value} value={item.value}>{item.label}</option>)}
+                </select>
+              </FormField>
+              <Button className="wide" type="submit" variant="primary" disabled={!canWriteModel || busy}>i18n:govoplan-organizations.add_structure.b722042a</Button>
+            </form>
+          </Card>
+          <Card title="i18n:govoplan-organizations.structures.f9b7f3b4">
+            <DataGrid id="organizations-structures" rows={model.structures} columns={structureColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_structures_found.20b382d0" initialFit="container" />
+          </Card>
+        </div>
+        <div className="organizations-section-grid">
+          <Card title="i18n:govoplan-organizations.relation_types.e5890528">
+            <form className="organizations-form-grid" onSubmit={(event) => void submitRelationType(event)}>
+              <SluggedFields draft={relationTypeDraft} onChange={setRelationTypeDraft} disabled={!canWriteModel || busy} />
+              <FormField label="i18n:govoplan-organizations.structure.7732fb0b">
+                <select value={relationTypeDraft.structure_id} disabled={!canWriteModel || busy} onChange={(event) => setRelationTypeDraft({ ...relationTypeDraft, structure_id: event.target.value })}>
+                  <option value="">i18n:govoplan-organizations.none.334c4a4c</option>
+                  {model.structures.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+                </select>
+              </FormField>
+              <FormField label="i18n:govoplan-organizations.source_unit.2fbd8baa">
+                <select value={relationTypeDraft.source_unit_type_id} disabled={!canWriteModel || busy} onChange={(event) => setRelationTypeDraft({ ...relationTypeDraft, source_unit_type_id: event.target.value })}>
+                  <option value="">i18n:govoplan-organizations.none.334c4a4c</option>
+                  {model.unit_types.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+                </select>
+              </FormField>
+              <FormField label="i18n:govoplan-organizations.target_unit.a1507d86">
+                <select value={relationTypeDraft.target_unit_type_id} disabled={!canWriteModel || busy} onChange={(event) => setRelationTypeDraft({ ...relationTypeDraft, target_unit_type_id: event.target.value })}>
+                  <option value="">i18n:govoplan-organizations.none.334c4a4c</option>
+                  {model.unit_types.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+                </select>
+              </FormField>
+              <div className="organizations-check-list">
+                <label><input type="checkbox" checked={relationTypeDraft.is_hierarchical} disabled={!canWriteModel || busy} onChange={(event) => setRelationTypeDraft({ ...relationTypeDraft, is_hierarchical: event.target.checked })} /> i18n:govoplan-organizations.hierarchical.8964f313</label>
+                <label><input type="checkbox" checked={relationTypeDraft.allow_cycles} disabled={!canWriteModel || busy} onChange={(event) => setRelationTypeDraft({ ...relationTypeDraft, allow_cycles: event.target.checked })} /> i18n:govoplan-organizations.allow_cycles.31327578</label>
+              </div>
+              <Button className="wide" type="submit" variant="primary" disabled={!canWriteModel || busy}>i18n:govoplan-organizations.add_relation_type.2ad19d03</Button>
+            </form>
+          </Card>
+          <Card title="i18n:govoplan-organizations.relation_types.e5890528">
+            <DataGrid id="organizations-relation-types" rows={model.relation_types} columns={relationTypeColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_relation_types_found.6f90bb81" initialFit="container" />
+          </Card>
+        </div>
+        <div className="organizations-section-grid">
+          <Card title="i18n:govoplan-organizations.function_types.172c01fe">
+            <form className="organizations-form-grid" onSubmit={(event) => void submitFunctionType(event)}>
+              <SluggedFields draft={functionTypeDraft} onChange={setFunctionTypeDraft} disabled={!canWriteModel || busy} />
+              <FormField label="i18n:govoplan-organizations.unit_type.9e62810d">
+                <select value={functionTypeDraft.organization_unit_type_id} disabled={!canWriteModel || busy} onChange={(event) => setFunctionTypeDraft({ ...functionTypeDraft, organization_unit_type_id: event.target.value })}>
+                  <option value="">i18n:govoplan-organizations.none.334c4a4c</option>
+                  {model.unit_types.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+                </select>
+              </FormField>
+              <div className="organizations-check-list">
+                <label><input type="checkbox" checked={functionTypeDraft.delegable} disabled={!canWriteModel || busy} onChange={(event) => setFunctionTypeDraft({ ...functionTypeDraft, delegable: event.target.checked })} /> i18n:govoplan-organizations.delegable.b4f0137d</label>
+                <label><input type="checkbox" checked={functionTypeDraft.act_in_place_allowed} disabled={!canWriteModel || busy} onChange={(event) => setFunctionTypeDraft({ ...functionTypeDraft, act_in_place_allowed: event.target.checked })} /> i18n:govoplan-organizations.act_in_place.49b942bd</label>
+              </div>
+              <Button className="wide" type="submit" variant="primary" disabled={!canWriteModel || busy}>i18n:govoplan-organizations.add_function_type.90d793f1</Button>
+            </form>
+          </Card>
+          <Card title="i18n:govoplan-organizations.function_types.172c01fe">
+            <DataGrid id="organizations-function-types" rows={model.function_types} columns={functionTypeColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_function_types_found.5eef31b1" initialFit="container" />
+          </Card>
+        </div>
+      </div>
+    );
+  }
+
+  function renderUnitsSection() {
+    return (
+      <div className="organizations-section-grid">
+        <Card title="i18n:govoplan-organizations.add_unit.8fa12fb1">
+          <form className="organizations-form-grid" onSubmit={(event) => void submitUnit(event)}>
+            <SluggedFields draft={unitDraft} onChange={setUnitDraft} disabled={!canWriteUnits || busy} />
+            <FormField label="i18n:govoplan-organizations.unit_type.9e62810d">
+              <select value={unitDraft.unit_type_id} disabled={!canWriteUnits || busy} onChange={(event) => setUnitDraft({ ...unitDraft, unit_type_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.none.334c4a4c</option>
+                {model.unit_types.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.parent_unit.1986c35e">
+              <select value={unitDraft.parent_id} disabled={!canWriteUnits || busy} onChange={(event) => setUnitDraft({ ...unitDraft, parent_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.none.334c4a4c</option>
+                {model.units.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <Button className="wide" type="submit" variant="primary" disabled={!canWriteUnits || busy}>i18n:govoplan-organizations.add_unit.8fa12fb1</Button>
+          </form>
+        </Card>
+        <Card title="i18n:govoplan-organizations.units.e14d0d92">
+          <DataGrid id="organizations-units" rows={model.units} columns={unitColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_units_found.eea2dd0c" initialFit="container" />
+        </Card>
+      </div>
+    );
+  }
+
+  function renderRelationsSection() {
+    return (
+      <div className="organizations-section-grid">
+        <Card title="i18n:govoplan-organizations.add_relation.6b6e67ea">
+          <form className="organizations-form-grid" onSubmit={(event) => void submitRelation(event)}>
+            <FormField label="i18n:govoplan-organizations.structure.7732fb0b">
+              <select value={relationDraft.structure_id} disabled={!canWriteUnits || busy} onChange={(event) => setRelationDraft({ ...relationDraft, structure_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.select_structure.c10f551c</option>
+                {model.structures.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.relation_type.d0aee2e7">
+              <select value={relationDraft.relation_type_id} disabled={!canWriteUnits || busy} onChange={(event) => setRelationDraft({ ...relationDraft, relation_type_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.select_relation_type.73f92478</option>
+                {model.relation_types.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.source_unit.2fbd8baa">
+              <select value={relationDraft.source_unit_id} disabled={!canWriteUnits || busy} onChange={(event) => setRelationDraft({ ...relationDraft, source_unit_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.select_source_unit.9b5a29c8</option>
+                {model.units.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.target_unit.a1507d86">
+              <select value={relationDraft.target_unit_id} disabled={!canWriteUnits || busy} onChange={(event) => setRelationDraft({ ...relationDraft, target_unit_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.select_target_unit.8d607541</option>
+                {model.units.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <label className="organizations-inline-check wide">
+              <input type="checkbox" checked={relationDraft.is_active} disabled={!canWriteUnits || busy} onChange={(event) => setRelationDraft({ ...relationDraft, is_active: event.target.checked })} />
+              <span>i18n:govoplan-organizations.active.a733b809</span>
+            </label>
+            <Button className="wide" type="submit" variant="primary" disabled={!canWriteUnits || busy}>i18n:govoplan-organizations.add_relation.6b6e67ea</Button>
+          </form>
+        </Card>
+        <Card title="i18n:govoplan-organizations.relations.1c796711">
+          <DataGrid id="organizations-relations" rows={model.relations} columns={relationColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_relations_found.4e75b11d" initialFit="container" />
+        </Card>
+      </div>
+    );
+  }
+
+  function renderFunctionsSection() {
+    return (
+      <div className="organizations-section-grid">
+        <Card title="i18n:govoplan-organizations.add_function.6abafee0">
+          <form className="organizations-form-grid" onSubmit={(event) => void submitFunction(event)}>
+            <SluggedFields draft={functionDraft} onChange={setFunctionDraft} disabled={!canWriteFunctions || busy} />
+            <FormField label="i18n:govoplan-organizations.unit.8fe4d595">
+              <select value={functionDraft.organization_unit_id} disabled={!canWriteFunctions || busy} onChange={(event) => setFunctionDraft({ ...functionDraft, organization_unit_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.select_unit.013bf13a</option>
+                {model.units.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.function_type.501fe7c0">
+              <select value={functionDraft.function_type_id} disabled={!canWriteFunctions || busy} onChange={(event) => setFunctionDraft({ ...functionDraft, function_type_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.none.334c4a4c</option>
+                {model.function_types.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <div className="organizations-check-list">
+              <label><input type="checkbox" checked={functionDraft.delegable} disabled={!canWriteFunctions || busy} onChange={(event) => setFunctionDraft({ ...functionDraft, delegable: event.target.checked })} /> i18n:govoplan-organizations.delegable.b4f0137d</label>
+              <label><input type="checkbox" checked={functionDraft.act_in_place_allowed} disabled={!canWriteFunctions || busy} onChange={(event) => setFunctionDraft({ ...functionDraft, act_in_place_allowed: event.target.checked })} /> i18n:govoplan-organizations.act_in_place.49b942bd</label>
+            </div>
+            <Button className="wide" type="submit" variant="primary" disabled={!canWriteFunctions || busy}>i18n:govoplan-organizations.add_function.6abafee0</Button>
+          </form>
+        </Card>
+        <Card title="i18n:govoplan-organizations.functions.805dc49b">
+          <DataGrid id="organizations-functions" rows={model.functions} columns={functionColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_functions_found.54e759a0" initialFit="container" />
+        </Card>
+      </div>
+    );
+  }
+
+  function renderAssignmentsSection() {
+    return (
+      <div className="organizations-section-grid">
+        <Card title="i18n:govoplan-organizations.add_assignment.6682f5f5">
+          <form className="organizations-form-grid" onSubmit={(event) => void submitAssignment(event)}>
+            <FormField label="i18n:govoplan-organizations.identity_id.b6ef5010">
+              <input value={assignmentDraft.identity_id} placeholder="i18n:govoplan-organizations.identity_id_placeholder.298cbd85" disabled={!canAssignFunctions || busy} onChange={(event) => setAssignmentDraft({ ...assignmentDraft, identity_id: event.target.value })} />
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.optional_account_id.5fcf495c">
+              <input value={assignmentDraft.account_id} disabled={!canAssignFunctions || busy} onChange={(event) => setAssignmentDraft({ ...assignmentDraft, account_id: event.target.value })} />
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.function.28822f3a">
+              <select value={assignmentDraft.function_id} disabled={!canAssignFunctions || busy} onChange={(event) => setAssignmentDraft({ ...assignmentDraft, function_id: event.target.value })}>
+                <option value="">i18n:govoplan-organizations.select_function.4895a67d</option>
+                {model.functions.map((item) => <option key={item.id} value={item.id}>{item.name}</option>)}
+              </select>
+            </FormField>
+            <FormField label="i18n:govoplan-organizations.source.6da13add">
+              <input value={assignmentDraft.source} disabled={!canAssignFunctions || busy} onChange={(event) => setAssignmentDraft({ ...assignmentDraft, source: event.target.value })} />
+            </FormField>
+            <div className="organizations-check-list">
+              <label><input type="checkbox" checked={assignmentDraft.applies_to_subunits} disabled={!canAssignFunctions || busy} onChange={(event) => setAssignmentDraft({ ...assignmentDraft, applies_to_subunits: event.target.checked })} /> i18n:govoplan-organizations.applies_to_subunits.7a15f741</label>
+              <label><input type="checkbox" checked={assignmentDraft.is_active} disabled={!canAssignFunctions || busy} onChange={(event) => setAssignmentDraft({ ...assignmentDraft, is_active: event.target.checked })} /> i18n:govoplan-organizations.active.a733b809</label>
+            </div>
+            <Button className="wide" type="submit" variant="primary" disabled={!canAssignFunctions || busy}>i18n:govoplan-organizations.add_assignment.6682f5f5</Button>
+          </form>
+        </Card>
+        <Card title="i18n:govoplan-organizations.function_assignments.4c5c6dae">
+          <DataGrid id="organizations-assignments" rows={model.function_assignments} columns={assignmentColumns} getRowKey={(row) => row.id} emptyText="i18n:govoplan-organizations.no_assignments_found.7ecc5bb7" initialFit="container" />
+        </Card>
+      </div>
+    );
+  }
+}
--- a/webui/src/i18n/generatedTranslations.ts
+++ b/webui/src/i18n/generatedTranslations.ts
@@ -0,0 +1,184 @@
+import type { PlatformTranslations } from "@govoplan/core-webui";
+
+export const generatedTranslations: PlatformTranslations = {
+  en: {
+    "i18n:govoplan-organizations.act_in_place.49b942bd": "Act in place",
+    "i18n:govoplan-organizations.active.a733b809": "Active",
+    "i18n:govoplan-organizations.add_assignment.6682f5f5": "Add assignment",
+    "i18n:govoplan-organizations.add_function.6abafee0": "Add function",
+    "i18n:govoplan-organizations.add_function_type.90d793f1": "Add function type",
+    "i18n:govoplan-organizations.add_relation.6b6e67ea": "Add relation",
+    "i18n:govoplan-organizations.add_relation_type.2ad19d03": "Add relation type",
+    "i18n:govoplan-organizations.add_structure.b722042a": "Add structure",
+    "i18n:govoplan-organizations.add_unit.8fa12fb1": "Add unit",
+    "i18n:govoplan-organizations.add_unit_type.58f2c05a": "Add unit type",
+    "i18n:govoplan-organizations.allow_cycles.31327578": "Allow cycles",
+    "i18n:govoplan-organizations.applies_to_subunits.7a15f741": "Applies to subunits",
+    "i18n:govoplan-organizations.assignment_added.94263d1b": "Function assignment added.",
+    "i18n:govoplan-organizations.assignments.278f513e": "Assignments",
+    "i18n:govoplan-organizations.classification.3e9f6c3a": "Classification",
+    "i18n:govoplan-organizations.concrete_model.4e9c531a": "Concrete model",
+    "i18n:govoplan-organizations.deactivate.46ab070d": "Deactivate",
+    "i18n:govoplan-organizations.delegable.b4f0137d": "Delegable",
+    "i18n:govoplan-organizations.description.55f8ebc8": "Description",
+    "i18n:govoplan-organizations.direct_assignment.2a068aac": "direct",
+    "i18n:govoplan-organizations.discard_organization_drafts.766d5f46": "Discard organization drafts",
+    "i18n:govoplan-organizations.function.28822f3a": "Function",
+    "i18n:govoplan-organizations.function_added.e2266702": "Function added.",
+    "i18n:govoplan-organizations.function_assignments.4c5c6dae": "Function assignments",
+    "i18n:govoplan-organizations.function_type.501fe7c0": "Function type",
+    "i18n:govoplan-organizations.function_type_added.2cd9e899": "Function type added.",
+    "i18n:govoplan-organizations.function_types.172c01fe": "Function types",
+    "i18n:govoplan-organizations.functions.805dc49b": "Functions",
+    "i18n:govoplan-organizations.hierarchical.8964f313": "Hierarchical",
+    "i18n:govoplan-organizations.hierarchy.74797f37": "Hierarchy",
+    "i18n:govoplan-organizations.identity_id.b6ef5010": "Identity ID",
+    "i18n:govoplan-organizations.identity_id_placeholder.298cbd85": "identity UUID",
+    "i18n:govoplan-organizations.inactive.09af574c": "Inactive",
+    "i18n:govoplan-organizations.kind.794c9d9c": "Kind",
+    "i18n:govoplan-organizations.loading_organization_model.846aa317": "Loading organization model...",
+    "i18n:govoplan-organizations.membership.4531d86d": "Membership",
+    "i18n:govoplan-organizations.meta_model.7398487c": "Meta-model",
+    "i18n:govoplan-organizations.model.20f35e63": "Model",
+    "i18n:govoplan-organizations.name.709a2322": "Name",
+    "i18n:govoplan-organizations.name_is_required.27cd3782": "Name is required.",
+    "i18n:govoplan-organizations.network.a24d31c3": "Network",
+    "i18n:govoplan-organizations.no_assignments_found.7ecc5bb7": "No function assignments found.",
+    "i18n:govoplan-organizations.no_function_types_found.5eef31b1": "No function types found.",
+    "i18n:govoplan-organizations.no_functions_found.54e759a0": "No functions found.",
+    "i18n:govoplan-organizations.no_relation_types_found.6f90bb81": "No relation types found.",
+    "i18n:govoplan-organizations.no_relations_found.4e75b11d": "No relations found.",
+    "i18n:govoplan-organizations.no_structures_found.20b382d0": "No structures found.",
+    "i18n:govoplan-organizations.no_unit_types_found.c81fb2a7": "No unit types found.",
+    "i18n:govoplan-organizations.no_units_found.eea2dd0c": "No units found.",
+    "i18n:govoplan-organizations.none.334c4a4c": "None",
+    "i18n:govoplan-organizations.optional_account_id.5fcf495c": "Optional account ID",
+    "i18n:govoplan-organizations.organization_model.4f924c0e": "Organization model",
+    "i18n:govoplan-organizations.organization_model_admin_description.35dc9f10": "Configure tenant-local unit types, parallel structures, relation types, and function types used by the organization module.",
+    "i18n:govoplan-organizations.organizations.220edf64": "Organizations",
+    "i18n:govoplan-organizations.organizations_intro.4e67c4bb": "Model organization types, concrete units, structures, functions, and identity-held function assignments.",
+    "i18n:govoplan-organizations.parent_unit.1986c35e": "Parent unit",
+    "i18n:govoplan-organizations.reactivate.58f2855d": "Reactivate",
+    "i18n:govoplan-organizations.relation_added.ca90461a": "Relation added.",
+    "i18n:govoplan-organizations.relation_type.d0aee2e7": "Relation type",
+    "i18n:govoplan-organizations.relation_type_added.6f1edff1": "Relation type added.",
+    "i18n:govoplan-organizations.relation_types.e5890528": "Relation types",
+    "i18n:govoplan-organizations.relations.1c796711": "Relations",
+    "i18n:govoplan-organizations.reload.cce71553": "Reload",
+    "i18n:govoplan-organizations.save_drafts.606f9401": "Save drafts",
+    "i18n:govoplan-organizations.select_function.4895a67d": "Select function",
+    "i18n:govoplan-organizations.select_function_type.2f426c43": "Select function type",
+    "i18n:govoplan-organizations.select_relation_type.73f92478": "Select relation type",
+    "i18n:govoplan-organizations.select_source_unit.9b5a29c8": "Select source unit",
+    "i18n:govoplan-organizations.select_structure.c10f551c": "Select structure",
+    "i18n:govoplan-organizations.select_target_unit.8d607541": "Select target unit",
+    "i18n:govoplan-organizations.select_unit.013bf13a": "Select unit",
+    "i18n:govoplan-organizations.select_unit_type.2c71d14f": "Select unit type",
+    "i18n:govoplan-organizations.slug.094da9b9": "Slug",
+    "i18n:govoplan-organizations.source.6da13add": "Source",
+    "i18n:govoplan-organizations.source_unit.2fbd8baa": "Source unit",
+    "i18n:govoplan-organizations.status.bae7d5be": "Status",
+    "i18n:govoplan-organizations.structure.7732fb0b": "Structure",
+    "i18n:govoplan-organizations.structure_added.f6cf8e74": "Structure added.",
+    "i18n:govoplan-organizations.structures.f9b7f3b4": "Structures",
+    "i18n:govoplan-organizations.target_unit.a1507d86": "Target unit",
+    "i18n:govoplan-organizations.type.599dcce2": "Type",
+    "i18n:govoplan-organizations.unit.8fe4d595": "Unit",
+    "i18n:govoplan-organizations.unit_added.760a8512": "Unit added.",
+    "i18n:govoplan-organizations.unit_type.9e62810d": "Unit type",
+    "i18n:govoplan-organizations.unit_type_added.e017dc8c": "Unit type added.",
+    "i18n:govoplan-organizations.unit_types.c7afc174": "Unit types",
+    "i18n:govoplan-organizations.units.e14d0d92": "Units",
+    "i18n:govoplan-organizations.write_permission_required.8b09fd67": "You do not have write permission for this organization section."
+  },
+  de: {
+    "i18n:govoplan-organizations.act_in_place.49b942bd": "In Vertretung handeln",
+    "i18n:govoplan-organizations.active.a733b809": "Aktiv",
+    "i18n:govoplan-organizations.add_assignment.6682f5f5": "Zuordnung hinzufügen",
+    "i18n:govoplan-organizations.add_function.6abafee0": "Funktion hinzufügen",
+    "i18n:govoplan-organizations.add_function_type.90d793f1": "Funktionstyp hinzufügen",
+    "i18n:govoplan-organizations.add_relation.6b6e67ea": "Beziehung hinzufügen",
+    "i18n:govoplan-organizations.add_relation_type.2ad19d03": "Beziehungstyp hinzufügen",
+    "i18n:govoplan-organizations.add_structure.b722042a": "Struktur hinzufügen",
+    "i18n:govoplan-organizations.add_unit.8fa12fb1": "Einheit hinzufügen",
+    "i18n:govoplan-organizations.add_unit_type.58f2c05a": "Einheitstyp hinzufügen",
+    "i18n:govoplan-organizations.allow_cycles.31327578": "Zyklen erlauben",
+    "i18n:govoplan-organizations.applies_to_subunits.7a15f741": "Gilt für Untereinheiten",
+    "i18n:govoplan-organizations.assignment_added.94263d1b": "Funktionszuordnung hinzugefügt.",
+    "i18n:govoplan-organizations.assignments.278f513e": "Zuordnungen",
+    "i18n:govoplan-organizations.classification.3e9f6c3a": "Klassifikation",
+    "i18n:govoplan-organizations.concrete_model.4e9c531a": "Konkretes Modell",
+    "i18n:govoplan-organizations.deactivate.46ab070d": "Deaktivieren",
+    "i18n:govoplan-organizations.delegable.b4f0137d": "Delegierbar",
+    "i18n:govoplan-organizations.description.55f8ebc8": "Beschreibung",
+    "i18n:govoplan-organizations.direct_assignment.2a068aac": "direkt",
+    "i18n:govoplan-organizations.discard_organization_drafts.766d5f46": "Organisationsentwürfe verwerfen",
+    "i18n:govoplan-organizations.function.28822f3a": "Funktion",
+    "i18n:govoplan-organizations.function_added.e2266702": "Funktion hinzugefügt.",
+    "i18n:govoplan-organizations.function_assignments.4c5c6dae": "Funktionszuordnungen",
+    "i18n:govoplan-organizations.function_type.501fe7c0": "Funktionstyp",
+    "i18n:govoplan-organizations.function_type_added.2cd9e899": "Funktionstyp hinzugefügt.",
+    "i18n:govoplan-organizations.function_types.172c01fe": "Funktionstypen",
+    "i18n:govoplan-organizations.functions.805dc49b": "Funktionen",
+    "i18n:govoplan-organizations.hierarchical.8964f313": "Hierarchisch",
+    "i18n:govoplan-organizations.hierarchy.74797f37": "Hierarchie",
+    "i18n:govoplan-organizations.identity_id.b6ef5010": "Identitäts-ID",
+    "i18n:govoplan-organizations.identity_id_placeholder.298cbd85": "Identitäts-UUID",
+    "i18n:govoplan-organizations.inactive.09af574c": "Inaktiv",
+    "i18n:govoplan-organizations.kind.794c9d9c": "Art",
+    "i18n:govoplan-organizations.loading_organization_model.846aa317": "Organisationsmodell wird geladen...",
+    "i18n:govoplan-organizations.membership.4531d86d": "Mitgliedschaft",
+    "i18n:govoplan-organizations.meta_model.7398487c": "Metamodell",
+    "i18n:govoplan-organizations.model.20f35e63": "Modell",
+    "i18n:govoplan-organizations.name.709a2322": "Name",
+    "i18n:govoplan-organizations.name_is_required.27cd3782": "Name ist erforderlich.",
+    "i18n:govoplan-organizations.network.a24d31c3": "Netzwerk",
+    "i18n:govoplan-organizations.no_assignments_found.7ecc5bb7": "Keine Funktionszuordnungen gefunden.",
+    "i18n:govoplan-organizations.no_function_types_found.5eef31b1": "Keine Funktionstypen gefunden.",
+    "i18n:govoplan-organizations.no_functions_found.54e759a0": "Keine Funktionen gefunden.",
+    "i18n:govoplan-organizations.no_relation_types_found.6f90bb81": "Keine Beziehungstypen gefunden.",
+    "i18n:govoplan-organizations.no_relations_found.4e75b11d": "Keine Beziehungen gefunden.",
+    "i18n:govoplan-organizations.no_structures_found.20b382d0": "Keine Strukturen gefunden.",
+    "i18n:govoplan-organizations.no_unit_types_found.c81fb2a7": "Keine Einheitstypen gefunden.",
+    "i18n:govoplan-organizations.no_units_found.eea2dd0c": "Keine Einheiten gefunden.",
+    "i18n:govoplan-organizations.none.334c4a4c": "Keine",
+    "i18n:govoplan-organizations.optional_account_id.5fcf495c": "Optionale Konto-ID",
+    "i18n:govoplan-organizations.organization_model.4f924c0e": "Organisationsmodell",
+    "i18n:govoplan-organizations.organization_model_admin_description.35dc9f10": "Konfiguriere mandantenbezogene Einheitstypen, parallele Strukturen, Beziehungstypen und Funktionstypen des Organisationsmoduls.",
+    "i18n:govoplan-organizations.organizations.220edf64": "Organisationen",
+    "i18n:govoplan-organizations.organizations_intro.4e67c4bb": "Modelliere Organisationstypen, konkrete Einheiten, Strukturen, Funktionen und identitätsbezogene Funktionszuordnungen.",
+    "i18n:govoplan-organizations.parent_unit.1986c35e": "Übergeordnete Einheit",
+    "i18n:govoplan-organizations.reactivate.58f2855d": "Reaktivieren",
+    "i18n:govoplan-organizations.relation_added.ca90461a": "Beziehung hinzugefügt.",
+    "i18n:govoplan-organizations.relation_type.d0aee2e7": "Beziehungstyp",
+    "i18n:govoplan-organizations.relation_type_added.6f1edff1": "Beziehungstyp hinzugefügt.",
+    "i18n:govoplan-organizations.relation_types.e5890528": "Beziehungstypen",
+    "i18n:govoplan-organizations.relations.1c796711": "Beziehungen",
+    "i18n:govoplan-organizations.reload.cce71553": "Neu laden",
+    "i18n:govoplan-organizations.save_drafts.606f9401": "Entwürfe speichern",
+    "i18n:govoplan-organizations.select_function.4895a67d": "Funktion auswählen",
+    "i18n:govoplan-organizations.select_function_type.2f426c43": "Funktionstyp auswählen",
+    "i18n:govoplan-organizations.select_relation_type.73f92478": "Beziehungstyp auswählen",
+    "i18n:govoplan-organizations.select_source_unit.9b5a29c8": "Quell-Einheit auswählen",
+    "i18n:govoplan-organizations.select_structure.c10f551c": "Struktur auswählen",
+    "i18n:govoplan-organizations.select_target_unit.8d607541": "Ziel-Einheit auswählen",
+    "i18n:govoplan-organizations.select_unit.013bf13a": "Einheit auswählen",
+    "i18n:govoplan-organizations.select_unit_type.2c71d14f": "Einheitstyp auswählen",
+    "i18n:govoplan-organizations.slug.094da9b9": "Slug",
+    "i18n:govoplan-organizations.source.6da13add": "Quelle",
+    "i18n:govoplan-organizations.source_unit.2fbd8baa": "Quell-Einheit",
+    "i18n:govoplan-organizations.status.bae7d5be": "Status",
+    "i18n:govoplan-organizations.structure.7732fb0b": "Struktur",
+    "i18n:govoplan-organizations.structure_added.f6cf8e74": "Struktur hinzugefügt.",
+    "i18n:govoplan-organizations.structures.f9b7f3b4": "Strukturen",
+    "i18n:govoplan-organizations.target_unit.a1507d86": "Ziel-Einheit",
+    "i18n:govoplan-organizations.type.599dcce2": "Typ",
+    "i18n:govoplan-organizations.unit.8fe4d595": "Einheit",
+    "i18n:govoplan-organizations.unit_added.760a8512": "Einheit hinzugefügt.",
+    "i18n:govoplan-organizations.unit_type.9e62810d": "Einheitstyp",
+    "i18n:govoplan-organizations.unit_type_added.e017dc8c": "Einheitstyp hinzugefügt.",
+    "i18n:govoplan-organizations.unit_types.c7afc174": "Einheitstypen",
+    "i18n:govoplan-organizations.units.e14d0d92": "Einheiten",
+    "i18n:govoplan-organizations.write_permission_required.8b09fd67": "Du hast keine Schreibberechtigung für diesen Organisationsbereich."
+  }
+};
--- a/webui/src/index.ts
+++ b/webui/src/index.ts
@@ -0,0 +1,5 @@
+export { default } from "./module";
+export * from "./module";
+export { default as OrganizationsPage } from "./features/organizations/OrganizationsPage";
+export * from "./api/organizations";
+export type { PlatformWebModule, PlatformNavItem, PlatformRouteContribution, PlatformRouteContext } from "@govoplan/core-webui";
--- a/webui/src/module.ts
+++ b/webui/src/module.ts
@@ -0,0 +1,63 @@
+import { createElement, lazy } from "react";
+import type { AdminSectionsUiCapability, PlatformWebModule } from "@govoplan/core-webui";
+import { generatedTranslations } from "./i18n/generatedTranslations";
+import "./styles/organizations.css";
+
+const OrganizationsPage = lazy(() => import("./features/organizations/OrganizationsPage"));
+const OrganizationsAdminPanel = lazy(() => import("./features/organizations/OrganizationsAdminPanel"));
+
+const organizationReadScopes = [
+  "organizations:model:read",
+  "organizations:unit:read",
+  "organizations:function:read",
+  "admin:settings:read"
+];
+
+const translations = {
+  en: generatedTranslations.en,
+  de: generatedTranslations.de
+};
+
+const organizationAdminSections: AdminSectionsUiCapability = {
+  sections: [
+    {
+      id: "tenant-organization-model",
+      label: "i18n:govoplan-organizations.organization_model.4f924c0e",
+      group: "TENANT",
+      order: 85,
+      anyOf: ["organizations:model:read", "admin:settings:read"],
+      render: ({ settings, auth }) => createElement(OrganizationsAdminPanel, { settings, auth })
+    }
+  ]
+};
+
+export const organizationsModule: PlatformWebModule = {
+  id: "organizations",
+  label: "i18n:govoplan-organizations.organizations.220edf64",
+  version: "1.0.0",
+  dependencies: ["access"],
+  optionalDependencies: ["identity", "admin"],
+  translations,
+  navItems: [
+    {
+      to: "/organizations",
+      label: "i18n:govoplan-organizations.organizations.220edf64",
+      iconName: "users",
+      anyOf: organizationReadScopes,
+      order: 70
+    }
+  ],
+  routes: [
+    {
+      path: "/organizations",
+      anyOf: organizationReadScopes,
+      order: 70,
+      render: ({ settings, auth }) => createElement(OrganizationsPage, { settings, auth })
+    }
+  ],
+  uiCapabilities: {
+    "admin.sections": organizationAdminSections
+  }
+};
+
+export default organizationsModule;
--- a/webui/src/styles/organizations.css
+++ b/webui/src/styles/organizations.css
@@ -0,0 +1,106 @@
+.organizations-workspace {
+  grid-template-columns: 230px minmax(0, 1fr);
+  background: var(--bg, #f8f7f4);
+}
+
+.organizations-page {
+  display: grid;
+  gap: 18px;
+  width: 100%;
+  max-width: 1480px;
+}
+
+.organizations-admin-page {
+  max-width: 100%;
+}
+
+.organizations-heading {
+  margin-bottom: 4px;
+}
+
+.organizations-toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
+  flex-wrap: wrap;
+}
+
+.organizations-section-grid {
+  display: grid;
+  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
+  gap: 18px;
+  align-items: start;
+}
+
+.organizations-form-panel,
+.organizations-table-panel {
+  min-width: 0;
+}
+
+.organizations-form-panel .card-body,
+.organizations-table-panel .card-body {
+  min-width: 0;
+}
+
+.organizations-form-grid {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 14px;
+}
+
+.organizations-form-grid .wide {
+  grid-column: 1 / -1;
+}
+
+.organizations-check-list {
+  display: grid;
+  gap: 10px;
+  grid-column: 1 / -1;
+}
+
+.organizations-check-list label,
+.organizations-inline-check {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  color: var(--text);
+  font-weight: 600;
+}
+
+.organizations-table-stack {
+  display: grid;
+  gap: 18px;
+}
+
+.organizations-field-note {
+  margin: 8px 0 0;
+  color: var(--muted);
+  font-size: 12px;
+}
+
+.organizations-id {
+  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
+  font-size: 12px;
+  color: var(--muted);
+}
+
+.organizations-empty {
+  color: var(--muted);
+}
+
+@media (max-width: 1100px) {
+  .organizations-section-grid {
+    grid-template-columns: 1fr;
+  }
+}
+
+@media (max-width: 900px) {
+  .organizations-workspace {
+    grid-template-columns: 1fr;
+  }
+
+  .organizations-form-grid {
+    grid-template-columns: 1fr;
+  }
+}