Implements the downstream consumption of matched discussions from the seed
phase, completing the discussion thread feature across collect, CLI, and
integration tests.
Collect phase (timeline_collect.rs):
- New collect_discussion_threads() function assembles full threads by
querying notes for each matched discussion_id, filtering out system notes
(is_system = 0), ordering chronologically, and capping at THREAD_MAX_NOTES
with a synthetic "[N more notes not shown]" summary note
- build_entity_lookup() creates a (type, id) -> (iid, path) map from seed
and expanded entities to provide display metadata for thread events
- Thread timestamp is set to the first note's created_at for correct
chronological interleaving with other timeline events
- collect_events() gains a matched_discussions parameter; threads are
collected after entity events and before evidence note merging
CLI rendering (cli/commands/timeline.rs):
- Human mode: threads render with box-drawing borders, bold @author tags,
date-stamped notes, and word-wrapped bodies (60 char width)
- Robot mode: DiscussionThread serializes as discussion_thread kind with
note_count, full notes array (note_id, author, body, ISO created_at)
- THREAD tag in yellow for human event tag styling
- TimelineMeta gains discussion_threads_included count
Tests:
- 8 new collect tests: basic thread assembly, system note filtering, empty
thread skipping, body truncation to THREAD_NOTE_MAX_CHARS, note cap with
synthetic summary, timestamp from first note, chronological sort position,
and deduplication of duplicate discussion_ids
- Integration tests updated for new collect_events signature
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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