feat(state-hub): implement v0.5 — dynamic domains & multi-repo

Replaces the hardcoded 6-domain PostgreSQL ENUM with a first-class
`domains` DB table, and adds a `managed_repos` table for multi-repo
support per domain.

P1 — Domain as a DB entity:
- Migration b1c2d3e4f5a6: creates `domains` table, migrates topics.domain
  ENUM column to domain_id FK, drops the domain ENUM type
- Domain ORM model (api/models/domain.py) + Pydantic schemas
- Domain API router: GET/POST /domains/, GET/PATCH /domains/{slug}/,
  rename and archive endpoints with EP/TD cascade on rename
- Topic model updated: domain_id FK + @property domain_slug for
  backwards-compatible JSON serialization (field renamed domain → domain_slug)
- TopicCreate/TopicRead updated; seed.py rewritten to use FK lookup

P2 — Multi-repo support:
- ManagedRepo ORM model (api/models/managed_repo.py) + schemas
- Repo API router: GET/POST /repos/, GET/PATCH /repos/{slug}/, archive
- Makefile: add-domain, rename-domain, add-repo, list-repos targets
- register_project.sh: verify domain via /domains/ API + POST /repos/

P3 — MCP tools & live validation:
- 6 new MCP tools: list_domains, create_domain, rename_domain,
  archive_domain, list_domain_repos, register_repo
- EP/TD routers: replace hardcoded VALID_DOMAINS set with per-request
  DB lookup — returns 422 with list of valid slugs on unknown domain
- State summary: adds domains: list[DomainSummary] (slug, name,
  repo_count, active_workstream_count, ep_count, td_count)
- TOOLS.md updated with domain management section

P4 — Dashboard:
- New domains.md page with KPI row + domain cards + repo lists
- domains.json.py + repos.json.py data loaders
- Domains page added to observablehq.config.js nav
- workstreams.md, extensions.md, techdept.md: domain_slug fix +
  dynamic domain list loaded from /domains/ API (no longer hardcoded)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/schemas/domain.py

@@ -0,0 +1,61 @@
+import uuid
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict
+
+
+class DomainCreate(BaseModel):
+    slug: str
+    name: str
+    description: str | None = None
+
+
+class DomainUpdate(BaseModel):
+    name: str | None = None
+    description: str | None = None
+    status: str | None = None
+
+
+class DomainRename(BaseModel):
+    new_slug: str
+    new_name: str
+
+
+class RepoStub(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: uuid.UUID
+    slug: str
+    name: str
+    local_path: str | None = None
+    remote_url: str | None = None
+    status: str
+
+
+class DomainRead(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: uuid.UUID
+    slug: str
+    name: str
+    description: str | None = None
+    status: str
+    created_at: datetime
+    updated_at: datetime
+
+
+class DomainDetail(DomainRead):
+    """Domain with entity counts and repo list."""
+    topic_count: int = 0
+    workstream_count: int = 0
+    ep_count: int = 0
+    td_count: int = 0
+    repos: list[RepoStub] = []
+
+
+class DomainSummary(BaseModel):
+    """Lightweight domain stats for the state summary."""
+    slug: str
+    name: str
+    repo_count: int = 0
+    active_workstream_count: int = 0
+    ep_count: int = 0
+    td_count: int = 0

api/schemas/extension_point.py

@@ -5,10 +5,6 @@ from pydantic import BaseModel, ConfigDict
 
 from api.models.extension_point import EPStatus
 
-VALID_DOMAINS = {
-    "custodian", "railiance", "markitect",
-    "coulomb_social", "personhood", "foerster_capabilities",
-}
 VALID_PRIORITIES = {"low", "medium", "high", "critical"}
 
 

api/schemas/managed_repo.py

@@ -0,0 +1,37 @@
+import uuid
+from datetime import datetime
+
+from pydantic import BaseModel, ConfigDict
+
+
+class RepoCreate(BaseModel):
+    domain_slug: str
+    slug: str
+    name: str
+    local_path: str | None = None
+    remote_url: str | None = None
+    description: str | None = None
+    topic_id: uuid.UUID | None = None
+
+
+class RepoUpdate(BaseModel):
+    name: str | None = None
+    local_path: str | None = None
+    remote_url: str | None = None
+    description: str | None = None
+    topic_id: uuid.UUID | None = None
+
+
+class RepoRead(BaseModel):
+    model_config = ConfigDict(from_attributes=True)
+    id: uuid.UUID
+    domain_id: uuid.UUID
+    slug: str
+    name: str
+    local_path: str | None = None
+    remote_url: str | None = None
+    description: str | None = None
+    status: str
+    topic_id: uuid.UUID | None = None
+    created_at: datetime
+    updated_at: datetime

api/schemas/state.py

@@ -4,6 +4,7 @@ from datetime import datetime
 from pydantic import BaseModel
 
 from api.schemas.decision import DecisionRead
+from api.schemas.domain import DomainSummary
 from api.schemas.progress_event import ProgressEventRead
 from api.schemas.task import TaskRead
 from api.schemas.topic import TopicWithWorkstreams
@@ -75,3 +76,4 @@ class StateSummary(BaseModel):
     recent_progress: list[ProgressEventRead]
     open_workstreams: list[WorkstreamWithDeps]
     next_steps: list[NextStep] = []
+    domains: list[DomainSummary] = []

api/schemas/topic.py

@@ -3,22 +3,22 @@ from datetime import datetime
 
 from pydantic import BaseModel, ConfigDict
 
-from api.models.topic import Domain, TopicStatus
+from api.models.topic import TopicStatus
 
 
 class TopicCreate(BaseModel):
     slug: str
     title: str
     description: str | None = None
-    domain: Domain
+    domain: str  # domain slug — resolved to domain_id in the router
     status: TopicStatus = TopicStatus.active
 
 
 class TopicUpdate(BaseModel):
     title: str | None = None
     description: str | None = None
-    domain: Domain | None = None
     status: TopicStatus | None = None
+    domain: str | None = None  # domain slug — resolved to domain_id in the router
 
 
 class WorkstreamStub(BaseModel):
@@ -37,7 +37,7 @@ class TopicRead(BaseModel):
     slug: str
     title: str
     description: str | None = None
-    domain: Domain
+    domain_slug: str | None = None  # resolved from FK relationship via @property
     status: TopicStatus
     created_at: datetime
     updated_at: datetime