Start the free Asimov collector on the writer, not the handle warm-up caught

[vivekchand]

No-PRD: fixes a shipped capability that never ran; the behaviour it restores is REQ-ASIMOV-001 in https://factory.8090.ai/project/b415065f-ab2f-4f53-8864-0c009fd098cb/requirements/a508a5c5-8821-4964-8930-3561b7d02f2b

The bug

/api/asimov/runs has always returned {"runs":[]} on this node, and the daemon log carries this on every boot since the connector shipped:

WARNING Asimov collection could not start. Other collectors will continue.

The except Exception logged no traceback, so it read as an optional collector declining rather than a failure. It is a failure. With exc_info turned on:

File "clawmetry/asimov/daemon.py", line 36, in start
  reader = AsimovLocalStore(store, initialize=True)
File "clawmetry/asimov/store.py", line 74, in __init__
  raise RuntimeError("Asimov ingestion requires the daemon writer")
ASIMOV-DIAG store=<class 'clawmetry.local_store._ProxyStore'> read_only=True

Why it happens

Ordering inside sync.py::run_daemon:

1. _startup_store = get_store(read_only=False) — but nothing has called mark_writer_owner() yet, so for a process whose node is already registered, get_store takes the _daemon_registered() branch and returns the dashboard's read-only _ProxyStore. The log line after it still says "owned".
2. local_server.start() — this is what calls mark_writer_owner() and opens the real writer, caching it in _store_rw.
3. _start_asimov(_startup_store) — passes the handle from step 1.

Every other caller in the daemon calls get_store() after step 2 and gets the real writer, which is why only Asimov collection is affected. Pro's robotics ingester resolves its own store (robotics/plugin.py:43) and has been ingesting the same journals fine, which is how an Asimov run can sit in robotics_runs while asimov_runs stays empty.

The fix

daemon.daemon_writer(store) returns the handle it was given when that handle can write, and asks local_store.get_store(read_only=False) when it cannot. By step 3 that answers with the real writer. One function, no change to global store semantics, and no change for a caller that already holds a writer.

Verification

Hot-patched into site-packages and restarted the daemon on this machine:

• /api/asimov/runs now returns the imported run: lab-asimov-1 | asimov_recording | hardware | 95 events
• /asimov renders it: robot lab-asimov-1, status Recorded, mode WALK, 20 joint rows, zero page errors
• no new "could not start" warning after the restart

Guards in tests/test_asimov_daemon.py: a start() handed a read-only proxy resolves and ingests; a start() handed a writer must not re-resolve (the fake get_store raises if it does). Revert-proofed: without the fix the first test fails with the same RuntimeError at store.py:74.

Found while checking that the free Asimov view still works for installs without the Physical AI workbench (#6471).

🤖 Generated with Claude Code

[8090-software-factory]

✅ Drift Bot (ClawMetry): no drift detected

Drift Bot analyzed the changed files against this project's blueprints and requirements and found no drift.