[davior]

Gecko Video Creator needs this change (GAM-1 in gvc's plan of attack). GVC turns a search hit ("where people talk about X") into a trimmed clip, and with only start_time it would have to guess the out point.

What changes

• GET /api/search hits now carry end_time next to start_time. It's the end of the matched transcript segment.
• The value is looked up from TranscriptSegment in one query per search, and only for the page being returned (services/search.py::_attach_end_times). It isn't stored in the FTS index: the index holds only the start, and adding a column there would mean rebuilding the whole index in a migration.
• Moments found by either retriever get an end. A moment found only by semantic search is covered too.
• Metadata hits, and hits whose segment has since been deleted (e.g. a transcript re-run), return null.
• Frontend: SearchHit.end_time is added to the type. No UI uses it yet.
• docs/plan-of-attack.md: the documented result shape now includes end_time.

Tests

• Three new tests in test_search_api.py:
  • a keyword hit gives (412.0, 417.0);
  • a semantic-only hit ("armament") gives the same pair;
  • a metadata hit gives null/null.
• With the service change stashed, the first two fail; with it they pass.
• Backend: pytest -q passes, 1250 tests.
• Frontend: format check, lint, npm test (393 tests) and build all pass.

🤖 Generated with Claude Code

https://claude.ai/code/session_016fiRJAt34ag62iPiuMkNhm

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