* feat(outcome): add stale sweep branch for batch-resolving quiet applications
- Add /outcome stale [N] and /outcome sweep [N] to Step 0
- Offer stale sweep in Step 1.3 when rows are quiet 60+ days
- Add Step 2c Stale Sweep Branch with interactive all/select/skip confirmation
- Batch-resolve qualifying open applications to canonical no_response
- Update tracker status and append dated notes; update archive outcome.md
- Add Rule 9 to Important Rules
- Add tests/test_outcome_stale.py and update CHANGELOG.md
* test(outcome): drop auxiliary candidate filter from spec test per review
