Belt-and-suspenders to the prompt-layer changes in 6c309f1. Even when
the model emits bogus task or place links, the server now refuses to
persist them.
## Task auto-linking guard
Reproducer (2026-04-27): a moment about restaging Docker on the swarm
ended up with `task_ids: [2]` (Weston's ADHD Evaluation) — the only
task in that day's prep. The model picked it up as filler.
`_filter_task_ids_by_keyword_overlap` now runs after id resolution: it
fetches each linked task's title, tokenizes both content and title
through `_content_keywords` (lowercased, stopwords stripped, <3-char
tokens dropped), and drops any link whose title shares no meaningful
keyword with the moment content. The drop is logged at INFO so we can
observe how often it fires post-deploy.
The guard runs against the merged id list, so it covers both the
preferred `task_titles` resolution path and the discouraged explicit
`task_ids` path.
## Place placeholder guard
Reproducer (2026-04-27): `place_names=["work"]` got passed to
`record_moment`. "work" / "home" / "office" aren't places — they're
role-labels for already-known geocoded locations.
`_filter_placeholder_places` drops a small set of generic single-word
labels before name resolution. Real user-named places that happen to
be one word (e.g. "Akron") pass through.
## Tests
9 new unit tests in `tests/test_record_moment_guards.py` cover:
- keyword tokenization & stopword stripping
- placeholder place filtering (generic, case-insensitive, real-place
pass-through)
- keyword-overlap filtering (the exact 4/27 reproducer, the genuine-
reference case, mixed/partial relevance, empty input)
13 tests pass; ruff clean.
Closes Fable task #158.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
bvandeusen
4f18023284