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/managed_repo.py

@@ -2,8 +2,10 @@ import uuid
 from datetime import date, datetime
 from typing import Any, Literal
 
-from pydantic import BaseModel, Field
+from fastapi import HTTPException
+from pydantic import BaseModel, Field, model_validator
 
+from api.classification import validate_classification
 from hub_core.schemas.managed_repo import (
     RepoCreate as CoreRepoCreate,
     RepoPathRegister,
@@ -11,11 +13,73 @@ from hub_core.schemas.managed_repo import (
 )
 
 
-class RepoCreate(CoreRepoCreate):
+class ClassificationFields(BaseModel):
+    category: str | None = None
+    secondary_domains: list[str] | None = None
+    capability_tags: list[str] | None = None
+    business_stake: list[str] | None = None
+    business_mechanics: list[str] | None = None
+    classified_at: date | None = None
+    classified_by: str | None = None
+    standard_version: str | None = None
+
+
+def classification_fields_set(data: dict[str, Any]) -> bool:
+    keys = (
+        "category",
+        "secondary_domains",
+        "capability_tags",
+        "business_stake",
+        "business_mechanics",
+        "classified_at",
+        "classified_by",
+        "standard_version",
+    )
+    return any(data.get(key) is not None for key in keys)
+
+
+def validate_repo_classification_fields(
+    *,
+    domain_slug: str,
+    fields: dict[str, Any],
+    require_complete: bool = False,
+) -> dict[str, Any]:
+    """Validate classification fields and return normalized values for persistence."""
+    if not classification_fields_set(fields) and not require_complete:
+        return fields
+
+    block = {
+        "category": fields.get("category"),
+        "domain": domain_slug,
+        "secondary_domains": fields.get("secondary_domains") or [],
+        "capability_tags": fields.get("capability_tags") or [],
+        "business_stake": fields.get("business_stake") or [],
+        "business_mechanics": fields.get("business_mechanics") or [],
+    }
+    if require_complete or fields.get("category") is not None:
+        if block["category"] is None:
+            raise HTTPException(status_code=422, detail="`category` is required when classification is provided")
+    if classification_fields_set(fields) and block["category"] is not None:
+        errors, warnings = validate_classification(block)
+        if errors:
+            raise HTTPException(status_code=422, detail={"classification_errors": errors, "warnings": warnings})
+    return fields
+
+
+class RepoCreate(CoreRepoCreate, ClassificationFields):
     topic_id: uuid.UUID | None = None
 
+    @model_validator(mode="after")
+    def validate_classification_on_create(self) -> "RepoCreate":
+        validate_repo_classification_fields(
+            domain_slug=self.domain_slug,
+            fields=self.model_dump(),
+            require_complete=classification_fields_set(self.model_dump()),
+        )
+        return self
 
-class RepoUpdate(BaseModel):
+
+class RepoUpdate(ClassificationFields):
     name: str | None = None
     local_path: str | None = None
     remote_url: str | None = None
@@ -42,7 +106,7 @@ class RepoOnboardResult(BaseModel):
     stderr: str = ""
 
 
-class RepoRead(CoreRepoRead):
+class RepoRead(CoreRepoRead, ClassificationFields):
     topic_id: uuid.UUID | None = None
     sbom_source: str | None = None
     last_sbom_at: datetime | None = None
@@ -59,13 +123,17 @@ class DispatchTask(BaseModel):
     needs_human: bool
 
 
-class DispatchWorkstream(BaseModel):
+class DispatchWorkplan(BaseModel):
     id: uuid.UUID
     title: str
     status: str
     pending_tasks: list[DispatchTask]
 
 
+# Legacy alias
+DispatchWorkstream = DispatchWorkplan
+
+
 class PendingInterfaceChange(BaseModel):
     id: uuid.UUID
     title: str
@@ -90,13 +158,17 @@ class ScopeIssueDetail(BaseModel):
 class RepoDispatch(BaseModel):
     repo_slug: str
     active_goal: dict[str, Any] | None
-    active_workstreams: list[DispatchWorkstream]
+    active_workplans: list[DispatchWorkplan]
     human_interventions: list[DispatchTask]
     pending_interface_changes: list[PendingInterfaceChange]
     scope_needs_review: bool
     scope_issue_details: list[ScopeIssueDetail]
     last_state_synced_at: datetime | None
 
+    @property
+    def active_workstreams(self) -> list[DispatchWorkplan]:
+        return self.active_workplans
+
 
 class RepoScopeHealth(BaseModel):
     repo_slug: str
@@ -104,4 +176,4 @@ class RepoScopeHealth(BaseModel):
     local_path: str | None = None
     path_available: bool
     scope_needs_review: bool
-    scope_issue_details: list[ScopeIssueDetail]
+    scope_issue_details: list[ScopeIssueDetail]