A thought that says only a repository's name opens no issue: it waits as a note and the reply asks what should change #7697

From #7635. The owner's thought 01m6c6ba4s01s1d57jyd8xes37 read only "trevato/forge". Triage still made it an issue under P0 Trust, and two builder runs were spent declining it as unclear.

Done when:

• [ ] In placeThought (src/crew/triage.ts), a thought whose text has nothing to act on opens no issue and comments on none. That means it is empty after trimming, or it is only a repository slug (owner/name) or a URL to one, or it has fewer than three words and no #N reference.
• [ ] The thought is kept, and the reply says, in plain words: Kept as a note: what should change in trevato/forge?
• [ ] The decider is not asked about such a thought (a rule, before decideOr).
• [ ] Tests in the triage suite cover these cases:

- "trevato/forge" opens nothing and gets that reply - " " opens nothing - "fix #12" still reaches #12 - "the home page is slow" still opens an issue

Files: src/crew/triage.ts, the triage test. Risk: a short real ask being swallowed. Keep the rule to the cases above.