Sync GovOPlaN module state

.gitignore

@@ -0,0 +1,348 @@
+# ---> Node
+# Logs
+logs
+*.log
+npm-debug.log*
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+
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+
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+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# UV
+#   Similar to Pipfile.lock, it is generally recommended to include uv.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#uv.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/latest/usage/project/#working-with-version-control
+.pdm.toml
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+# PyCharm
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+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+# Ruff stuff:
+.ruff_cache/
+
+# PyPI configuration file
+.pypirc
+
+# ---> VisualStudioCode
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+!.vscode/*.code-snippets
+
+# Local History for Visual Studio Code
+.history/
+
+# Built Visual Studio Code Extensions
+*.vsix
+
+*.db
+
+# GovOPlaN local runtime state
+runtime/
+
+# GovOPlaN WebUI test output
+webui/.module-test-build/
+webui/.component-test-build/

docs/TENANCY_MODULE_BOUNDARY.md

@@ -0,0 +1,29 @@
+# GovOPlaN Tenancy Module Boundary
+
+`govoplan-tenancy` owns tenant registry, tenant settings, tenant lifecycle, and
+tenant-context route contributions.
+
+## Owned Routes
+
+- `/api/v1/admin/tenants*`: tenant registry, delta feed, owner candidates,
+  settings, deletion plans, retirement, and guarded empty-tenant destruction.
+- `/api/v1/tenancy/switch-tenant`: tenant-owned route surface for interactive
+  tenant context switching.
+
+`/api/v1/auth/switch-tenant` remains in `govoplan-access` for API
+compatibility, but both routes delegate to the same
+`auth.tenantContextSwitcher` capability.
+
+## Lifecycle Rules
+
+Tenant retirement is non-destructive. It marks the tenant inactive and stores
+lifecycle metadata in tenant settings.
+
+Destructive deletion is intentionally narrow: it is allowed only when the
+tenant is not the caller's active tenant and all registered tenant-owned counts
+are zero. Populated tenants must be retired first or cleaned explicitly by
+their owning modules before physical deletion.
+
+Tenant lifecycle planning uses registered tenant summary providers and delete
+veto providers. Modules that own tenant-scoped data must contribute summaries
+so destructive deletion cannot silently miss their rows.

src/govoplan_tenancy/backend/api/v1/routes.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from fastapi import APIRouter, Depends, HTTPException, Query, status
+from fastapi import APIRouter, Body, Depends, HTTPException, Query, status
 from sqlalchemy import and_, func, or_
 from sqlalchemy.orm import Session
 
@@ -8,7 +8,12 @@ from govoplan_core.admin.common import AdminValidationError, slugify
 from govoplan_core.admin.settings import get_system_settings
 from govoplan_core.auth import ApiPrincipal, get_api_principal, has_scope, require_scope
 from govoplan_core.audit.logging import audit_event
-from govoplan_core.core.access import CAPABILITY_ACCESS_TENANT_PROVISIONER, TenantAccessProvisioner
+from govoplan_core.core.access import (
+    CAPABILITY_ACCESS_TENANT_PROVISIONER,
+    CAPABILITY_AUTH_TENANT_CONTEXT_SWITCHER,
+    TenantAccessProvisioner,
+    TenantContextSwitcher,
+)
 from govoplan_core.core.change_sequence import ChangeSequenceEntry, decode_sequence_watermark, encode_sequence_watermark, record_change, sequence_watermark_is_expired
 from govoplan_core.core.runtime import get_registry
 from govoplan_core.db.session import get_session
@@ -20,6 +25,7 @@ from govoplan_core.i18n import (
     tenant_enabled_language_codes,
     update_i18n_settings,
 )
+from govoplan_core.security.time import utc_now
 from govoplan_core.tenancy.service import (
     assert_tenant_governance_override_allowed,
     effective_tenant_governance,
@@ -29,7 +35,13 @@ from govoplan_tenancy.backend.db.models import Tenant
 
 from .schemas import (
     TenantAdminItem,
+    TenantContextSwitchRequest,
+    TenantContextSwitchResponse,
     TenantCreateRequest,
+    TenantDeleteRequest,
+    TenantDeletionPlanResponse,
+    TenantLifecycleIssue,
+    TenantLifecycleResponse,
     TenantListDeltaResponse,
     TenantListResponse,
     TenantOwnerCandidate,
@@ -41,6 +53,7 @@ from .schemas import (
 )
 
 router = APIRouter(prefix="/admin", tags=["admin"])
+tenant_router = APIRouter(prefix="/tenancy", tags=["tenancy"])
 
 TENANCY_MODULE_ID = "tenancy"
 TENANT_LIST_COLLECTION = "tenancy.tenants"
@@ -62,6 +75,16 @@ def _tenant_access_provisioner() -> TenantAccessProvisioner:
     return capability
 
 
+def _tenant_context_switcher() -> TenantContextSwitcher:
+    registry = get_registry()
+    if registry is None or not hasattr(registry, "has_capability") or not registry.has_capability(CAPABILITY_AUTH_TENANT_CONTEXT_SWITCHER):
+        raise HTTPException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, detail="Tenant context switcher capability is not configured")
+    capability = registry.require_capability(CAPABILITY_AUTH_TENANT_CONTEXT_SWITCHER)
+    if not isinstance(capability, TenantContextSwitcher):
+        raise HTTPException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, detail="Tenant context switcher capability is invalid")
+    return capability
+
+
 def _require_permission(principal: ApiPrincipal, scope: str) -> None:
     if not has_scope(principal, scope):
         raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail=f"Missing scope: {scope}")
@@ -91,6 +114,61 @@ def _tenant_item(session: Session, tenant: Tenant) -> TenantAdminItem:
     )
 
 
+def _tenant_deletion_plan(session: Session, tenant: Tenant, principal: ApiPrincipal, *, mode: str = "retire") -> TenantDeletionPlanResponse:
+    issues: list[TenantLifecycleIssue] = []
+    counts = tenant_counts(session, tenant.id)
+    destructive = mode == "destroy"
+    if tenant.id == principal.tenant_id:
+        issues.append(TenantLifecycleIssue(
+            severity="blocker",
+            code="active_tenant",
+            message=f"Switch to another tenant before {'deleting' if destructive else 'retiring'} the active tenant.",
+            module_id=TENANCY_MODULE_ID,
+        ))
+    if not tenant.is_active:
+        issues.append(TenantLifecycleIssue(
+            severity="info",
+            code="already_inactive",
+            message="Tenant is already inactive; retiring it again will only refresh lifecycle metadata.",
+            module_id=TENANCY_MODULE_ID,
+        ))
+    has_tenant_data = any(value for value in counts.values())
+    if destructive and has_tenant_data:
+        issues.append(TenantLifecycleIssue(
+            severity="blocker",
+            code="tenant_data_present",
+            message="Tenant-owned data exists; retire the tenant or remove its data before destructive deletion.",
+            module_id=TENANCY_MODULE_ID,
+        ))
+    elif has_tenant_data:
+        issues.append(TenantLifecycleIssue(
+            severity="warning",
+            code="tenant_data_retained",
+            message="Tenant-owned data will be retained. This operation is non-destructive.",
+            module_id=TENANCY_MODULE_ID,
+        ))
+
+    registry = get_registry()
+    if registry is not None and hasattr(registry, "delete_veto_providers"):
+        for provider in registry.delete_veto_providers("tenant"):
+            try:
+                provider(session, tenant.id, tenant.id)
+            except Exception as exc:
+                issues.append(TenantLifecycleIssue(
+                    severity="blocker",
+                    code="module_veto",
+                    message=str(exc),
+                ))
+    return TenantDeletionPlanResponse(
+        tenant_id=tenant.id,
+        action="destroy" if destructive else "retire",
+        allowed=not any(issue.severity == "blocker" for issue in issues),
+        destructive_supported=destructive and not has_tenant_data,
+        issues=issues,
+        counts=counts,
+    )
+
+
 def _tenant_settings_item(session: Session, tenant: Tenant) -> TenantSettingsItem:
     system_settings = get_system_settings(session)
     system_payload = system_i18n_payload(system_settings)
@@ -254,6 +332,27 @@ def _tenant_settings_response_watermark(session: Session, *, tenant_id: str, ent
     return encode_sequence_watermark(entries[-1].id) if has_more and entries else _tenant_settings_watermark(session, tenant_id=tenant_id)
 
 
+@tenant_router.post("/switch-tenant", response_model=TenantContextSwitchResponse)
+def switch_tenant_context(
+    payload: TenantContextSwitchRequest,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(get_api_principal),
+):
+    try:
+        switched = _tenant_context_switcher().switch_tenant_context(session, principal=principal, tenant_id=payload.tenant_id)
+    except ValueError as exc:
+        raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST, detail=str(exc)) from exc
+    except LookupError as exc:
+        raise HTTPException(status_code=status.HTTP_403_FORBIDDEN, detail=str(exc)) from exc
+    session.commit()
+    return TenantContextSwitchResponse(
+        account_id=switched.account_id,
+        membership_id=switched.membership_id,
+        tenant_id=switched.tenant_id,
+        session_id=switched.session_id,
+    )
+
+
 @router.get("/tenants", response_model=TenantListResponse)
 def list_tenants(
     session: Session = Depends(get_session),
@@ -430,6 +529,82 @@ def update_tenant(
     return _tenant_item(session, tenant)
 
 
+@router.get("/tenants/{tenant_id}/deletion-plan", response_model=TenantDeletionPlanResponse)
+def tenant_deletion_plan(
+    tenant_id: str,
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_scope("system:tenants:suspend")),
+):
+    tenant = session.get(Tenant, tenant_id)
+    if tenant is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Tenant not found")
+    return _tenant_deletion_plan(session, tenant, principal)
+
+
+@router.delete("/tenants/{tenant_id}", response_model=TenantLifecycleResponse)
+def retire_tenant(
+    tenant_id: str,
+    payload: TenantDeleteRequest | None = Body(default=None),
+    session: Session = Depends(get_session),
+    principal: ApiPrincipal = Depends(require_scope("system:tenants:suspend")),
+):
+    request = payload or TenantDeleteRequest()
+    tenant = session.get(Tenant, tenant_id)
+    if tenant is None:
+        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Tenant not found")
+    plan = _tenant_deletion_plan(session, tenant, principal, mode=request.mode)
+    if not plan.allowed:
+        action_label = "destroyed" if request.mode == "destroy" else "retired"
+        raise HTTPException(
+            status_code=status.HTTP_409_CONFLICT,
+            detail={"message": f"Tenant cannot be {action_label}.", "plan": plan.model_dump(mode="json")},
+        )
+
+    if request.mode == "destroy":
+        deleted_item = _tenant_item(session, tenant)
+        audit_event(
+            session,
+            tenant_id=tenant.id,
+            user_id=principal.user.id,
+            action="tenant.destroyed",
+            scope="system",
+            object_type="tenant",
+            object_id=tenant.id,
+            details={"reason": request.reason, "counts": plan.counts},
+        )
+        _record_tenant_list_change(session, tenant=tenant, operation="deleted", principal=principal)
+        session.delete(tenant)
+        session.commit()
+        return TenantLifecycleResponse(item=deleted_item, plan=plan)
+
+    settings_payload = dict(tenant.settings or {})
+    lifecycle_payload = dict(settings_payload.get("lifecycle") or {})
+    lifecycle_payload.update({
+        "state": "retired",
+        "retired_at": utc_now().isoformat(),
+        "retired_by_user_id": principal.user.id,
+    })
+    if request.reason:
+        lifecycle_payload["reason"] = request.reason.strip()
+    settings_payload["lifecycle"] = lifecycle_payload
+    tenant.settings = settings_payload
+    tenant.is_active = False
+    session.add(tenant)
+    audit_event(
+        session,
+        tenant_id=tenant.id,
+        user_id=principal.user.id,
+        action="tenant.retired",
+        scope="system",
+        object_type="tenant",
+        object_id=tenant.id,
+        details={"reason": request.reason, "counts": plan.counts},
+    )
+    _record_tenant_list_change(session, tenant=tenant, operation="updated", principal=principal)
+    session.commit()
+    return TenantLifecycleResponse(item=_tenant_item(session, tenant), plan=plan)
+
+
 @router.get("/tenant/settings", response_model=TenantSettingsItem)
 def get_tenant_settings(
     session: Session = Depends(get_session),

src/govoplan_tenancy/backend/api/v1/schemas.py

@@ -74,6 +74,47 @@ class TenantUpdateRequest(BaseModel):
     is_active: bool | None = None
 
 
+class TenantLifecycleIssue(BaseModel):
+    severity: Literal["blocker", "warning", "info"]
+    code: str
+    message: str
+    module_id: str | None = None
+
+
+class TenantDeletionPlanResponse(BaseModel):
+    tenant_id: str
+    action: Literal["retire", "destroy"] = "retire"
+    allowed: bool
+    destructive_supported: bool = False
+    issues: list[TenantLifecycleIssue] = Field(default_factory=list)
+    counts: dict[str, int] = Field(default_factory=dict)
+
+
+class TenantDeleteRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    mode: Literal["retire", "destroy"] = "retire"
+    reason: str | None = None
+
+
+class TenantLifecycleResponse(BaseModel):
+    item: TenantAdminItem
+    plan: TenantDeletionPlanResponse
+
+
+class TenantContextSwitchRequest(BaseModel):
+    model_config = ConfigDict(extra="forbid")
+
+    tenant_id: str
+
+
+class TenantContextSwitchResponse(BaseModel):
+    account_id: str
+    membership_id: str
+    tenant_id: str
+    session_id: str | None = None
+
+
 class TenantSettingsItem(BaseModel):
     id: str
     slug: str

src/govoplan_tenancy/backend/manifest.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 from govoplan_core.core.access import (
     CAPABILITY_AUTH_PERMISSION_EVALUATOR,
     CAPABILITY_AUTH_PRINCIPAL_RESOLVER,
+    CAPABILITY_AUTH_TENANT_CONTEXT_SWITCHER,
     CAPABILITY_TENANCY_TENANT_RESOLVER,
 )
 from govoplan_core.core.modules import ModuleContext, ModuleManifest
@@ -17,16 +18,24 @@ def _tenant_resolver(context: ModuleContext):
 
 def _route_factory(context: ModuleContext):
     del context
-    from govoplan_tenancy.backend.api.v1.routes import router
+    from fastapi import APIRouter
+    from govoplan_tenancy.backend.api.v1.routes import router, tenant_router
 
-    return router
+    aggregate = APIRouter()
+    aggregate.include_router(router)
+    aggregate.include_router(tenant_router)
+    return aggregate
 
 
 manifest = ModuleManifest(
     id="tenancy",
     name="Tenancy",
     version="0.1.6",
-    required_capabilities=(CAPABILITY_AUTH_PRINCIPAL_RESOLVER, CAPABILITY_AUTH_PERMISSION_EVALUATOR),
+    required_capabilities=(
+        CAPABILITY_AUTH_PRINCIPAL_RESOLVER,
+        CAPABILITY_AUTH_PERMISSION_EVALUATOR,
+        CAPABILITY_AUTH_TENANT_CONTEXT_SWITCHER,
+    ),
     route_factory=_route_factory,
     capability_factories={
         CAPABILITY_TENANCY_TENANT_RESOLVER: _tenant_resolver,