feat: implement ISSUE-WP-0005 connector mapping and scope alignment

Add MappingService (work_record_uuid ↔ external id), project/map CLI with
outward push-status, optional TaskSpec work_record fields, boundary-sync
policy, and packaging/capability framing cleanup. Mark WP-0005 finished.

issue_core/api/ingest.py

@@ -21,6 +21,7 @@ from ..backends.gitea import GiteaBackend
 from ..backends.local import LocalSQLiteBackend
 from ..cli.utils import get_config_dir, load_backend_configs
 from ..core.interfaces import BackendFactory, IssueBackend
+from ..core.mapping import MappingService
 from ..core.models import Issue, IssueState, Label
 from .auth import require_api_key
 from .schemas import BackendName, TaskIngestionRequest, TaskIngestionResponse
@@ -87,6 +88,12 @@ def _build_issue(payload: TaskIngestionRequest, backend_type: str) -> Issue:
         ingestion_meta["due_at"] = (now + timedelta(days=payload.due_in_days)).isoformat()
 
     sync_metadata: Dict[str, Any] = {"ingestion": ingestion_meta}
+    if payload.work_record_uuid:
+        sync_metadata["mapping"] = {
+            "work_record_uuid": payload.work_record_uuid,
+            "work_record_id": payload.work_record_id,
+            "work_record_kind": payload.work_record_kind,
+        }
 
     return Issue(
         id="",
@@ -102,15 +109,65 @@ def _build_issue(payload: TaskIngestionRequest, backend_type: str) -> Issue:
     )
 
 
+def _mapping_backend_name(backend_type: str) -> str:
+    return "sqlite" if backend_type == "local" else backend_type
+
+
+def _upsert_mapping_if_requested(
+    payload: TaskIngestionRequest,
+    *,
+    backend_type: str,
+    issue_id: str,
+    issue_url: Optional[str],
+) -> None:
+    if not payload.work_record_uuid:
+        return
+    svc = MappingService()
+    svc.connect(str(get_config_dir() / "mappings.db"))
+    try:
+        svc.upsert(
+            work_record_uuid=payload.work_record_uuid,
+            work_record_id=payload.work_record_id,
+            work_record_kind=payload.work_record_kind,
+            backend=_mapping_backend_name(backend_type),
+            external_id=issue_id,
+            external_url=issue_url,
+            target_repo=payload.target_repo,
+            direction="outward",
+        )
+    finally:
+        svc.disconnect()
+
+
 @router.post(
     "/issues/",
     response_model=TaskIngestionResponse,
     status_code=status.HTTP_201_CREATED,
     dependencies=[Depends(require_api_key)],
-    summary="Ingest a task from an external emitter (e.g. activity-core).",
+    summary="Create an external tracker issue (intentional emit; optional work-record mapping).",
 )
 async def ingest_task(payload: TaskIngestionRequest) -> TaskIngestionResponse:
     backend, backend_type = _resolve_backend()
+    backend_name: BackendName = _BACKEND_TYPE_TO_NAME.get(backend_type, backend_type)  # type: ignore[assignment]
+    mapping_backend = _mapping_backend_name(backend_type)
+
+    # Idempotent: if work_record_uuid already mapped, return existing issue.
+    if payload.work_record_uuid:
+        map_svc = MappingService()
+        map_svc.connect(str(get_config_dir() / "mappings.db"))
+        try:
+            existing = map_svc.get_active_by_uuid(
+                payload.work_record_uuid, backend=mapping_backend
+            )
+            if existing:
+                return TaskIngestionResponse(
+                    issue_id=existing.external_id,
+                    issue_url=existing.external_url,
+                    backend=backend_name,
+                )
+        finally:
+            map_svc.disconnect()
+
     draft = _build_issue(payload, backend_type)
     try:
         created: Issue = backend.create_issue(draft)
@@ -131,7 +188,20 @@ async def ingest_task(payload: TaskIngestionRequest) -> TaskIngestionResponse:
     issue_url: Optional[str] = None
     if created.sync_metadata:
         issue_url = created.sync_metadata.get("url") or created.sync_metadata.get("html_url")
-    backend_name: BackendName = _BACKEND_TYPE_TO_NAME.get(backend_type, backend_type)  # type: ignore[assignment]
+
+    try:
+        _upsert_mapping_if_requested(
+            payload,
+            backend_type=backend_type,
+            issue_id=issue_id,
+            issue_url=issue_url,
+        )
+    except ValueError as exc:
+        raise HTTPException(
+            status_code=status.HTTP_409_CONFLICT,
+            detail=str(exc),
+        ) from exc
+
     return TaskIngestionResponse(
         issue_id=issue_id,
         issue_url=issue_url,