feat: SFM event forwarding added. v0.3.0

CHANGELOG.md

@@ -5,6 +5,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.3.0] - 2026-05-19
+
+### Added
+- `event_forwarder.py` — forwards `.IDFH` (histogram) and `.IDFW` (waveform) event files plus their `TXT/<basename>.txt` sidecars to a seismo-relay SFM server's new `/db/import/idf_file` endpoint
+- Sha256-keyed `thor_forwarded.json` state file for idempotency across restarts and re-scans (default path: `<log_dir>/thor_forwarded.json`)
+- "SFM Forward" tab in Settings dialog: enable/URL/Test, forward interval, quiescence, missing-report grace, HTTP timeout, max forwards per pass, max event age, state file picker
+- Forwarder status line in tray menu: `SFM OK | N fwd, M err | last 30s ago`
+- Tray icon goes amber when the SFM forwarder is failing but the API heartbeat is still healthy
+- Re-pair logic: events forwarded without their TXT are re-forwarded once the sidecar appears so the relay can refresh DB rows with device-authoritative PPV/ZCFreq/peak values
+- `event_forwarder.py --seed-state` CLI for skipping historical backfill on a first deploy
+- Version badge: `Thor Watcher vX.Y.Z` shown at the top of the tray menu and in the Settings dialog title bar — operators no longer have to crack open the .exe properties to tell which version is running
+
+### Changed
+- Bumped `VERSION` to `0.3.0`
+- Settings dialog tab order: Connection / Paths / Scanning / Logging / **SFM Forward** / Updates
+
 ## [0.2.0] - 2026-03-20
 
 ### Added