feat: integrate files and portal surfaces

src/govoplan_postbox/backend/schemas.py

@@ -75,6 +75,19 @@ class PostboxAttachmentPayload(BaseModel):
     metadata: dict[str, Any] = Field(default_factory=dict)
 
 
+class PostboxAttachmentResolutionItem(PostboxAttachmentPayload):
+    available: bool = False
+    reason_code: str
+    file_asset_id: str | None = None
+    file_version_id: str | None = None
+    download_path: str | None = None
+    provenance: dict[str, Any] = Field(default_factory=dict)
+
+
+class PostboxAttachmentResolutionResponse(BaseModel):
+    attachments: list[PostboxAttachmentResolutionItem] = Field(default_factory=list)
+
+
 class PostboxWrappedKeyPayload(BaseModel):
     recipient_type: str = Field(min_length=1, max_length=50)
     recipient_id: str = Field(min_length=1, max_length=255)
@@ -355,6 +368,7 @@ class PostboxExactCreateRequest(BaseModel):
     function_id: str = Field(min_length=1, max_length=36)
     address_key: str | None = Field(default=None, max_length=120)
     classification: PostboxClassification = "internal"
+    portal_visible: bool = False
     encryption_profile: Literal["plaintext_v1", "server_envelope_v1"] = (
         "plaintext_v1"
     )
@@ -392,6 +406,7 @@ class PostboxTemplateRevisionPayload(BaseModel):
     )
     classification: PostboxClassification = "internal"
     allow_vacant_delivery: bool = True
+    portal_visible: bool = False
     encryption_profile: Literal["plaintext_v1", "server_envelope_v1"] = (
         "plaintext_v1"
     )