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## Summary Issue #1478 — surface observers whose envelope timestamps are being clamped because they're emitting zone-less local-time strings (UTC-N observers showed up perpetually as "Stale" before #1466, and per-packet rxTime is still clamped to ingest time for them, muddying propagation-delay analytics). Now the UI tells operators which observers are misconfigured + how to fix it. ## What changed ### Ingestor (cmd/ingestor) - New `observers_clock_naive_v1` migration adds three columns to `observers`: - `clock_skew_seconds INTEGER` (signed: negative = behind UTC, positive = ahead) - `clock_skew_count_24h INTEGER` (rolling 24h event count) - `clock_last_naive_at TEXT` (RFC3339 timestamp of last clamp) - `resolveRxTime` now returns `(rxTime, naiveSkewSec)`. The packet-handler call site invokes `store.RecordNaiveSkew(observerID, deltaSec)` whenever a naive envelope is clamped (the existing >15 min naive-tolerance path). The counter resets to 1 if no event in the prior 24h, else increments. Single INSERT-or-UPDATE round trip per clamp. ### Server (cmd/server) - `Observer` struct + `GetObservers` / `GetObserverByID` extended to scan the three new columns. - `ObserverResp` gains four JSON fields exposed by `/api/observers` and `/api/observers/{id}`: - `clock_naive` (bool, derived from `clock_last_naive_at` being within 24h) - `clock_skew_seconds`, `clock_skew_count_24h`, `clock_last_naive_at` - Decay is **read-side**: a stale event yields `clock_naive=false` with zero counts. No background sweep, no writes from the read-only server, no race with the ingestor. ### Frontend (public) - `window.ObserversNaiveChip.render(o)` — total render helper, returns ⚠️ chip HTML when `o.clock_naive===true`, `""` otherwise. Used inline in the observers-list `name` cell and in the row-detail slide-over. Tooltip explains magnitude + direction + count + fix. - `window.ObserverDetailNaiveBanner.render(obs)` — yellow alert banner at the top of the observer-detail page with the skew magnitude, last-event timestamp, and the actionable fix ("Set host clock to UTC, OR emit Z-suffixed/offset-aware timestamps from the observer script"). ## TDD trail - `5ddd5b42` red: backend `cmd/server/observer_naive_clock_1478_test.go` (3 tests asserting JSON fields + 24h decay) + frontend `test-observer-naive-clock-1478.js` (8 jsdom-style tests asserting helpers exist and render correctly). Both failed on master with field-missing / export-missing assertions. - `4ecc79c8` green backend: schema + Observer / GetObservers / ObserverResp / handler decay. - `2137ab81` green frontend: chip + banner helpers and call sites. ## Tests - `cd cmd/server && go test ./...` → all green (full suite, 46s) - `cd cmd/ingestor && go test ./...` → all green (full suite, 98s) - `node test-observer-naive-clock-1478.js` → 8/8 pass - `node test-frontend-helpers.js` → unchanged from master (pre-existing failures only) ## Acceptance (issue #1478) - ✅ Observer running with `python datetime.now().isoformat()` (naive, off by N hours) → `clock_naive=true` after the next clamp → UI shows ⚠️ chip + banner. - ✅ Observer with `datetime.now(timezone.utc).isoformat()` (Z-suffixed) → never clamped → never flagged. - ✅ Observer that fixed its clock → `clock_naive` returns to `false` 24h after the last clamp event (read-side decay). Closes #1478. --------- Co-authored-by: openclaw <bot@openclaw.local>