Merge pull request 'Merge v1.4.1 from dev' (#2) from dev into main

## [1.4.1] - 2026-03-17

### Fixed
- `config.ini` now saves to `AppData\Local\Series3Watcher\` instead of `Program Files` — fixes permission denied error on first-run wizard save.
- Config path resolution in both `series3_tray.py` and `series3_watcher.py` updated to use `sys.frozen` + `LOCALAPPDATA` when running as a PyInstaller `.exe`.
- Status menu item now uses a callable so it updates every time the menu opens — was showing stale "Starting..." while tooltip correctly showed current status.
- Settings dialog now opens in its own thread — fixes unresponsive tabs and text fields while the watcher loop is running.
- Tray icon reverted to plain colored dot — custom icon graphic was unreadable at 16px tray size. `.ico` file is still used for the `.exe` file icon.

### Changed
- Terra-View URL field in settings wizard now accepts base URL only (e.g. `http://192.168.x.x:8000`) — `/api/series3/heartbeat` endpoint appended automatically.
- Test Connection button now hits `/health` endpoint instead of posting a fake heartbeat — no database side effects.
- "terra-view URL" label capitalized to "Terra-View URL".
- Default log path updated to `AppData\Local\Series3Watcher\agent_logs\series3_watcher.log`.
- Installer now creates `agent_logs\` folder on install.
- `BUILDING.md` added — step-by-step guide for building, releasing, and updating.

## [1.4.0] - 2026-03-12

### Added
- `series3_tray.py` — system tray launcher using `pystray` + `Pillow`. Color-coded icon (green=OK, amber=Pending, red=Missing, purple=Error, grey=Starting). Right-click menu shows live status, unit count, last scan age, Open Log Folder, and Exit.
- `run_watcher(state, stop_event)` in `series3_watcher.py` for background thread use by the tray. Shared `state` dict updated on every scan cycle with status, unit list, last scan time, and last error.
- Interruptible sleep in watcher loop — tray exit is immediate, no waiting out the full scan interval.

### Changed
- `main()` now calls `run_watcher()` — standalone behavior unchanged.
- `requirements.txt` updated to document tray dependencies (`pystray`, `Pillow`); watcher itself remains stdlib-only.

CHANGELOG.md

@@ -6,6 +6,23 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ---
 
+## [1.4.1] - 2026-03-17
+
+### Fixed
+- `config.ini` now saves to `AppData\Local\Series3Watcher\` instead of `Program Files` — fixes permission denied error on first-run wizard save.
+- Config path resolution in both `series3_tray.py` and `series3_watcher.py` updated to use `sys.frozen` + `LOCALAPPDATA` when running as a PyInstaller `.exe`.
+- Status menu item now uses a callable so it updates every time the menu opens — was showing stale "Starting..." while tooltip correctly showed current status.
+- Settings dialog now opens in its own thread — fixes unresponsive tabs and text fields while the watcher loop is running.
+- Tray icon reverted to plain colored dot — custom icon graphic was unreadable at 16px tray size. `.ico` file is still used for the `.exe` file icon.
+
+### Changed
+- Terra-View URL field in settings wizard now accepts base URL only (e.g. `http://192.168.x.x:8000`) — `/api/series3/heartbeat` endpoint appended automatically.
+- Test Connection button now hits `/health` endpoint instead of posting a fake heartbeat — no database side effects.
+- "terra-view URL" label capitalized to "Terra-View URL".
+- Default log path updated to `AppData\Local\Series3Watcher\agent_logs\series3_watcher.log`.
+- Installer now creates `agent_logs\` folder on install.
+- `BUILDING.md` added — step-by-step guide for building, releasing, and updating.
+
 ## [1.4.0] - 2026-03-12
 
 ### Added

README_DL2.md

@@ -1,26 +0,0 @@
-# Series 3 Watcher — v1_0(py38-safe) for DL2
-
-**Target**: Windows 7 + Python 3.8.10  
-**Baseline**: v5_4 (no logic changes)
-
-## Files
-- series3_agent_v1_0_py38.py — main script (py38-safe)
-- config.ini — your config (already included)
-- series3_roster.csv — your roster (already included, this auto updates from a URL to a dropbox file)
-- requirements.txt — none beyond stdlib
-
-## Install
-1) Create `C:\SeismoEmitter\` on DL2
-2) Extract this ZIP into that folder
-3) Open CMD:
-   ```cmd
-   cd C:\SeismoEmitter
-   python series3_agent_v1_0_py38.py
-   ```
-(If the console shows escape codes on Win7, set `COLORIZE = False` in `config.ini`.)
-
-## Quick validation
-- Heartbeat prints Local/UTC timestamps
-- One line per active roster unit with OK/Pending/Missing, Age, Last, File
-- Unexpected units block shows .MLG not in roster
-- agent.log rotates per LOG_RETENTION_DAYS