feat(classification-spine): implement STATE-WP-0065 repo-anchored model

Replace the ad-hoc coordination-domain spine with the Repo Classification
Standard: 14 market domains, classification columns on managed_repos, and
workplans anchored by repo_id (topic_id optional).

- Add Alembic migration d8e9f0a1b2c3 with data backfill and workstream→workplan rename
- Add api/classification.py validation and register-from-classification tooling
- Expose workplan-first REST/MCP surface with legacy workstream aliases
- Add C-24 consistency rule and legacy domain frontmatter mapping
- Update dashboard repos page with category/capability/stake filters
- Update orientation docs; mark STATE-WP-0065 finished

api/schemas/capability_request.py

@@ -1,7 +1,7 @@
 import uuid
 from datetime import datetime
 
-from pydantic import BaseModel, ConfigDict
+from pydantic import AliasChoices, BaseModel, ConfigDict, Field, computed_field
 
 from hub_core.schemas.capability import (
     CapabilityRequestDispute,
@@ -23,20 +23,29 @@ class CapabilityRequestCreate(BaseModel):
     priority: str = "medium"
     requesting_domain: str  # slug, resolved to domain_id in router
     requesting_agent: str
-    requesting_workstream_id: uuid.UUID | None = None
+    requesting_workplan_id: uuid.UUID | None = Field(
+        default=None,
+        validation_alias=AliasChoices("requesting_workplan_id", "requesting_workstream_id"),
+    )
     blocking_task_id: uuid.UUID | None = None
 
 
 class CapabilityRequestAccept(BaseModel):
     fulfilling_agent: str
-    fulfilling_workstream_id: uuid.UUID | None = None
+    fulfilling_workplan_id: uuid.UUID | None = Field(
+        default=None,
+        validation_alias=AliasChoices("fulfilling_workplan_id", "fulfilling_workstream_id"),
+    )
 
 
 class CapabilityRequestPatch(BaseModel):
     catalog_entry_id: uuid.UUID | None = None
     priority: str | None = None
     blocking_task_id: uuid.UUID | None = None
-    fulfilling_workstream_id: uuid.UUID | None = None
+    fulfilling_workplan_id: uuid.UUID | None = Field(
+        default=None,
+        validation_alias=AliasChoices("fulfilling_workplan_id", "fulfilling_workstream_id"),
+    )
 
 
 class CapabilityRequestReroute(BaseModel):
@@ -57,10 +66,10 @@ class CapabilityRequestRead(BaseModel):
     status: str
     requesting_domain_slug: str
     requesting_agent: str
-    requesting_workstream_id: uuid.UUID | None = None
+    requesting_workplan_id: uuid.UUID | None = None
     fulfilling_domain_slug: str | None = None
     fulfilling_agent: str | None = None
-    fulfilling_workstream_id: uuid.UUID | None = None
+    fulfilling_workplan_id: uuid.UUID | None = None
     blocking_task_id: uuid.UUID | None = None
     catalog_entry_id: uuid.UUID | None = None
     resolution_note: str | None = None
@@ -73,3 +82,13 @@ class CapabilityRequestRead(BaseModel):
     completed_at: datetime | None = None
     created_at: datetime
     updated_at: datetime
+
+    @computed_field  # type: ignore[prop-decorator]
+    @property
+    def requesting_workstream_id(self) -> uuid.UUID | None:
+        return self.requesting_workplan_id
+
+    @computed_field  # type: ignore[prop-decorator]
+    @property
+    def fulfilling_workstream_id(self) -> uuid.UUID | None:
+        return self.fulfilling_workplan_id