Module title 

Where a session title is stored, and when a new one replaces the old.

Both writers go through store_title: the pane’s own request (session:activity_summary, on a human message) and the empty-title recovery sweep (backend::reactive::activity_watcher). The check and the write happen in one transaction, so neither can overwrite a title the other stored while its call ran. The pane used to write the title itself, after its own copy of these rules. docs/reports/REPORT_AMBIENT_FRAMEWORK_REASSESSMENT_2026_10_08.md section 6.7.

Enums

Replace

When a candidate title is stored.

Constants

META_TITLE

The block meta key the title lives in. The pane header and the Swarm row read it.

NEWS_MAX_OVERLAP 🔒

Below this overlap (Jaccard over topic words) a new title counts as news.

STOP_WORDS 🔒

Words that carry no topic, ignored when comparing two titles.

Functions

is_title_news

Is candidate a different goal from current, or a rewording of it? A rewording (“Fix the login race” → “Fix login race condition”) keeps the old title; a real change of topic replaces it.

store_title

Store title as the block’s session title if replace allows it. A value that is not a usable title is never stored. still_current is asked inside the transaction: a request superseded by a newer one must not store its title after the newer one did. Ok(true) when written.

topic_words 🔒