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## Summary `POST /api/packets` is broken on every v3-schema install — which is the default since #1289. The handler issues two writes against legacy v2 column names and silently swallows the observation insert's error, returning `200 OK` with `id>0` while persisting zero observation rows. ## Root cause `cmd/server/routes.go:1225-1235` (pre-fix) used the v2 schema shape: ```go INSERT INTO transmissions (... path_json ...) // path_json removed in v3 INSERT INTO observations (transmission_id, observer_id, observer_name, snr, rssi, timestamp) // v2 columns // timestamp written as RFC3339 text; v3 wants unix INTEGER // second Exec's error was discarded ``` v3 schema (`cmd/ingestor/db.go:289-304`): `observations.observer_idx INTEGER` (FK `observers.rowid`), `observations.timestamp INTEGER` (unix epoch), `path_json` lives here not on `transmissions`. Reporter [@EldoonNemar](https://github.com/EldoonNemar) called this out precisely in #1196 — both the schema mismatch and the divergence between the test harness (which uses the v3 shape) and the handler (v2 shape). ## Fix `cmd/server/routes.go`: - `transmissions` insert: drop `path_json` column. - Observer resolution: `INSERT OR IGNORE INTO observers (id, name, ...)` then `SELECT rowid` — mirrors the ingestor resolver at `cmd/ingestor/db.go:778,906`. - `observations` insert: write `observer_idx INTEGER` + `timestamp = time.Now().Unix()`; `path_json` moved here. - **Propagate both insert errors** (transmission + observation) as `500` instead of swallowing them. ## TDD | Step | Commit | Result | | ----- | ------- | ------ | | RED | `46d25389` | Test fails on master: `id=0` because the transmissions insert references a column not present in v3. | | GREEN | `dae57d67` | Test passes; round-trip persists the observation with `observer_idx` resolved from the seeded `obs1` row and a unix-epoch `timestamp`. | Local repro: ``` # RED on the test commit alone: $ go test -run TestPostPacketPersistsV3Schema -count=1 . --- FAIL: TestPostPacketPersistsV3Schema (0.03s) routes_test.go:4755: expected transmission id > 0, got 0 (body: {"id":0,"decoded":{...}}) FAIL # GREEN on HEAD: $ go test -run TestPostPacketPersistsV3Schema -count=1 . ok github.com/corescope/server 0.037s ``` ## Scope Two files, both in `cmd/server/`: - `cmd/server/routes.go` (+38/-12) — handler rewrite - `cmd/server/routes_test.go` (+66) — round-trip regression test No public API signature changes. No DB schema changes (consumes the existing v3 schema correctly). Closes #1196