feat(STATE-WP-0064): start parallel week with source-tagged sweep runners

Tag consistency_sweep_remote_all progress events by source, route the local
timer through the API, add a parallel-week comparison script, and document
the 2026-06-21 to 2026-06-28 observation window for T03.

api/schemas/consistency_sweep.py

@@ -27,12 +27,17 @@ class ConsistencySweepRemoteAllGenerate(BaseModel):
         le=3600,
         description="Wall-clock budget for the remote-all sweep (0 disables)",
     )
+    source: str = Field(
+        default="api",
+        description="Runner label stored on progress events (local-timer, activity-core, api)",
+    )
 
 
 class ConsistencySweepRemoteAllRun(BaseModel):
     started_at: datetime
     completed_at: datetime
     max_seconds: int
+    source: str
     exit_code: int
     lock_skipped: bool
     repos_processed: list[ConsistencySweepRepoResult] = Field(default_factory=list)