Merge branch 'master' into docs/tracing-constitution

CLAUDE.md

@@ -467,6 +467,18 @@ are SMS-derived and unaffected. Progress: Prometheus
 `date_backfill_remaining` per library on `GET /libraries` (live count of
 `date_utc IS NULL`).
 
+**Displaying a capture time: `wall_clock`.** Every payload a client renders a
+capture time from (`/image/metadata` + the date/GPS mutation responses,
+`/memories` items, `/photos/gps-summary`) carries `wall_clock`, a naive
+ISO-8601 string (`2018-09-29T14:00:00`) computed by
+`date_view::row_display_wall` — the camera's wall clock (instant + camera
+offset; the owner's display zone when there's no offset), with the per-source
+fallback for rows the drain can't convert (its permanent floor).
+`file_wall_clock` covers files with no row yet (filename date, then fs time).
+Clients render it verbatim and do no zone math (ADR-0001; FileViewer-React #33,
+Apollo #37). Insight prompts use the same function, so prompt and UI agree.
+`dev/e2e/e2e.sh check` verifies it for every fixture on all three endpoints.
+
 `/memories` is a single SQL query against this column
 (`get_memories_in_window` in `src/database/mod.rs`), using
 `strftime('%m-%d' | '%W' | '%m', date_taken, 'unixepoch', tz)` for