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.

.gitignore

@@ -1,3 +1,6 @@
+# --------------------------
+# s3-agent files
+# --------------------------
 config.ini
 
 # -------------------------
@@ -19,7 +22,9 @@ env/
 # Distribution / packaging
 build/
 dist/
+Output/
 *.egg-info/
+*.spec
 
 # -------------------------
 # Logs + runtime artifacts

BUILDING.md

@@ -0,0 +1,117 @@
+# Building & Releasing Series 3 Watcher
+
+## Prerequisites (Win7 VM — do this once)
+
+- Python 3.7.2 (or 3.8.10 if SP1 is installed)
+- Inno Setup 6 — installed at `C:\Program Files (x86)\Inno Setup 6\`
+- PyInstaller, pystray, Pillow — installed automatically by `build.bat`
+
+The Win7 VM is the build machine. All builds must happen there to ensure
+compatibility with the production DL2 computer.
+
+---
+
+## First-Time Install on a New Machine
+
+Do this when setting up a brand new machine that has never had the watcher before.
+
+**Step 1 — Build the .exe (on the Win7 VM)**
+
+1. Copy the `series3-watcher/` folder to the VM (shared folder, USB, etc.)
+2. Double-click `build.bat`
+3. Wait for it to finish — output: `dist\series3-watcher.exe`
+
+**Step 2 — Build the installer (on the Win7 VM)**
+
+1. Open `installer.iss` in Inno Setup Compiler
+2. Click **Build → Compile**
+3. Output: `Output\series3-watcher-setup.exe`
+
+**Step 3 — Create a Gitea release**
+
+1. On your main machine, go to `https://gitea.serversdown.net/serversdown/series3-watcher`
+2. Click **Releases → New Release**
+3. Set the tag to match the version in `series3_watcher.py` (e.g. `v1.4.1`)
+4. Upload **both** files as release assets:
+   - `dist\series3-watcher.exe` — used by the auto-updater on existing installs
+   - `Output\series3-watcher-setup.exe` — used for fresh installs
+
+**Step 4 — Install on the target machine**
+
+1. Download `series3-watcher-setup.exe` from the Gitea release
+2. Run it on the target machine — installs to `C:\Program Files\Series3Watcher\`
+3. The watcher launches automatically after install (or on next login)
+4. The Setup Wizard appears on first run — fill in the Terra-View URL and Blastware path
+
+---
+
+## Releasing an Update (existing machines auto-update)
+
+Do this for any code change — bug fix, new feature, etc.
+
+**Step 1 — Bump the version**
+
+In `series3_watcher.py`, update the `VERSION` string:
+```python
+VERSION = "1.4.2"   # increment appropriately
+```
+Also update `installer.iss`:
+```
+AppVersion=1.4.2
+```
+
+**Step 2 — Build the .exe (on the Win7 VM)**
+
+1. Pull the latest code to the VM
+2. Double-click `build.bat`
+3. Output: `dist\series3-watcher.exe`
+
+> For hotfixes you can skip Inno Setup — existing machines only need the `.exe`.
+> Only rebuild the installer if you need a fresh install package for a new machine.
+
+**Step 3 — Create a Gitea release**
+
+1. Go to `https://gitea.serversdown.net/serversdown/series3-watcher`
+2. Click **Releases → New Release**
+3. Tag must match the new version exactly (e.g. `v1.4.2`) — the auto-updater
+   compares this tag against its own version to decide whether to update
+4. Upload `dist\series3-watcher.exe` as a release asset
+5. Optionally upload `Output\series3-watcher-setup.exe` if you rebuilt the installer
+
+**Step 4 — Done**
+
+Existing installs check Gitea every ~5 minutes. When they see the new tag they
+will download `series3-watcher.exe`, swap it in place, and relaunch silently.
+No user action required on the target machine.
+
+---
+
+## Version Numbering
+
+Follows Semantic Versioning: `MAJOR.MINOR.PATCH`
+
+| Change type | Example |
+|-------------|---------|
+| Bug fix / text change | `1.4.1 → 1.4.2` |
+| New feature | `1.4.x → 1.5.0` |
+| Breaking change | `1.x.x → 2.0.0` |
+
+---
+
+## Files That Go in the Gitea Release
+
+| File | Required for | Notes |
+|------|-------------|-------|
+| `dist\series3-watcher.exe` | Auto-updates on existing machines | Always upload this |
+| `Output\series3-watcher-setup.exe` | Fresh installs on new machines | Only needed for new deployments |
+
+---
+
+## Files That Are NOT Committed to Git
+
+- `dist/` — PyInstaller output
+- `Output/` — Inno Setup output
+- `build/` — PyInstaller temp files
+- `*.spec` — PyInstaller spec file
+- `config.ini` — machine-specific, never commit
+- `agent_logs/` — log files

CHANGELOG.md

@@ -1,11 +1,50 @@
 # Changelog
-All notable changes to **Series3 Agent** will be documented in this file.
+All notable changes to **Series 3 Watcher** will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),  
+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).
 
 ---
 
+## [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.
+
+---
+
+## [1.3.0] - 2026-03-12
+
+### Changed
+- Renamed program to "series3-watcher" and main script to `series3_watcher.py` — better reflects what it does (watches for activity) rather than implying active data emission.
+- Default `SOURCE_TYPE` updated to `series3_watcher`.
+- Default log filename updated to `series3_watcher.log`.
+
+---
+
 ## [1.2.1] - 2026-03-03
 
 ### Changed

README.md

@@ -1,84 +1,127 @@
-# Series3 Ingest Agent v1.2
+# Series 3 Watcher v1.4.1
 
-A lightweight Python script that monitors Instantel **Series 3 (Minimate)** call-in activity on a Blastware server.
+Monitors Instantel **Series 3 (Minimate)** call-in activity on a Blastware server. Runs as a **system tray app** that starts automatically on login, reports heartbeats to terra-view, and self-updates from Gitea.
 
-It scans the event folder, reads `.MLG` headers to identify unit IDs, and prints a live status table showing:
+---
 
-- Last event received  
+## Deployment (Recommended — Installer)
-- Age since last call-in  
-- OK / Pending / Missing states  
-- Detected units (no roster required)  
-- Optional API heartbeat to Seismograph Fleet Manager backend
 
-This script is part of the larger **Seismograph Fleet Manager** project.
+The easiest way to deploy to a field machine is the pre-built Windows installer.
+
+1. Download `series3-watcher-setup.exe` from the [latest release](https://gitea.serversdown.net/serversdown/series3-watcher/releases) on Gitea.
+2. Run the installer on the target machine. It installs to `C:\Program Files\Series3Watcher\` and adds a shortcut to the user's Startup folder.
+3. On first launch the **Setup Wizard** opens automatically — fill in the terra-view URL and Blastware path, then click **Save & Start**.
+4. A coloured dot appears in the system tray. Done.
+
+The watcher will auto-start on every login from that point on.
+
+### Auto-Updates
+
+The watcher checks [Gitea](https://gitea.serversdown.net/serversdown/series3-watcher) for a newer release approximately every 5 minutes. When a newer `.exe` is found it downloads it silently, swaps the file, and relaunches — no user action required.
+
+Updates can also be pushed remotely from terra-view → **Settings → Developer → Watcher Manager**.
+
+---
+
+## Building & Releasing
+
+See [BUILDING.md](BUILDING.md) for the full step-by-step process covering:
+- First-time build and installer creation
+- Publishing a release to Gitea
+- Releasing hotfix updates (auto-updater picks them up automatically)
+
+---
+
+## Running Without the Installer (Dev / Debug)
+
+```
+pip install -r requirements.txt
+python series3_tray.py        # tray app (recommended)
+python series3_watcher.py     # console-only, no tray
+```
+
+`config.ini` must exist in the same directory. Copy `config-template.ini` to `config.ini` and edit it, or just run `series3_tray.py` — the wizard will create it on first run.
+
+---
+
+## Configuration
+
+All settings live in `config.ini`. The Setup Wizard covers every field, but here's the reference:
+
+### API / terra-view
+
+| Key | Description |
+|-----|-------------|
+| `API_ENABLED` | `true` to send heartbeats to terra-view |
+| `API_URL` | Terra-View base URL, e.g. `http://192.168.1.10:8000` — the `/api/series3/heartbeat` endpoint is appended automatically |
+| `API_INTERVAL_SECONDS` | How often to POST (default `300`) |
+| `SOURCE_ID` | Identifier for this machine (defaults to hostname) |
+| `SOURCE_TYPE` | Always `series3_watcher` |
+
+### Paths
+
+| Key | Description |
+|-----|-------------|
+| `SERIES3_PATH` | Blastware autocall folder, e.g. `C:\Blastware 10\Event\autocall home` |
+| `MAX_EVENT_AGE_DAYS` | Ignore `.MLG` files older than this (default `365`) |
+| `LOG_FILE` | Path to the log file |
+
+### Scanning
+
+| Key | Description |
+|-----|-------------|
+| `SCAN_INTERVAL_SECONDS` | How often to scan the folder (default `300`) |
+| `OK_HOURS` | Age threshold for OK status (default `12`) |
+| `MISSING_HOURS` | Age threshold for Missing status (default `24`) |
+| `MLG_HEADER_BYTES` | Bytes to read from each `.MLG` header for unit ID (default `2048`) |
+| `RECENT_WARN_DAYS` | Log unsniffable files newer than this window |
+
+### Logging
+
+| Key | Description |
+|-----|-------------|
+| `ENABLE_LOGGING` | `true` / `false` |
+| `LOG_RETENTION_DAYS` | Auto-clear log after this many days (default `30`) |
+| `COLORIZE` | ANSI colours in console — leave `false` on Win7 |
+
+---
+
+## Tray Icon
+
+| Colour | Meaning |
+|--------|---------|
+| Grey | Starting / no scan yet |
+| Green | All detected units OK |
+| Yellow | At least one unit Pending |
+| Red | At least one unit Missing, or error |
+
+Right-click the icon for: status, per-unit list, Settings, Open Log Folder, Exit.
+
+---
+
+## terra-view Integration
+
+When `API_ENABLED = true`, the watcher POSTs a telemetry payload to terra-view on each heartbeat interval. terra-view updates the emitter table and tracks the watcher process itself (version, last seen, log tail) in the Watcher Manager.
+
+To view connected watchers: **Settings → Developer → Watcher Manager**.
 
 ---
 
 ## Requirements
 
-- Python 3.8 (Windows 7 compatible)  
+- Windows 7 or later
-- Blastware 10 event folder available locally  
+- Python 3.8 (only needed if running from source — not needed with the installer)
-- `config.ini` in the same directory as the script  
+- Blastware 10 event folder accessible on the local machine
-
-Install dependencies with:
-
-`pip install -r requirements.txt`
-
----
-
-## Usage
-
-Run the agent from the folder containing the script:
-
-`python series3_agent.py`
-
-The script will:
-
-1. Scan the Blastware event folder for `.MLG` files (within a max age window).  
-2. Sniff each file header for the unit ID.  
-3. Print a status line for each detected unit (OK / Pending / Missing).  
-4. Optionally POST a heartbeat payload on an interval when `API_ENABLED=true`.  
-5. Write logs into the `agent_logs/` folder and auto-clean old logs.
-
----
-
-## Config
-
-All settings are stored in `config.ini`.
-
-Key fields:
-
-- `SERIES3_PATH` — folder containing `.MLG` files  
-- `SCAN_INTERVAL_SECONDS` — how often to scan  
-- `OK_HOURS` / `MISSING_HOURS` — thresholds for status  
-- `MLG_HEADER_BYTES` — how many bytes to sniff from each `.MLG` header  
-- `RECENT_WARN_DAYS` — log unsniffable files newer than this window  
-- `MAX_EVENT_AGE_DAYS` — ignore events older than this many days  
-- `API_ENABLED` — enable/disable heartbeat POST  
-- `API_URL` — heartbeat endpoint  
-- `API_INTERVAL_SECONDS` — heartbeat frequency  
-- `SOURCE_ID` / `SOURCE_TYPE` — identifiers included in the API payload  
-- `LOG_RETENTION_DAYS` — auto-delete logs older than this many days  
-- `COLORIZE` — ANSI color output (off by default for Win7)
-
----
-
-## Logs
-
-Logs are stored under `agent_logs/`.  
-Git ignores all log files but keeps the folder itself.
 
 ---
 
 ## Versioning
 
-This repo follows **Semantic Versioning (SemVer)**.
+Follows **Semantic Versioning**. Current release: **v1.4.1**.
-
+See `CHANGELOG.md` for full history.
-Current release: **v1.2.1** — renamed to series3 ingest agent.  
-See `CHANGELOG.md` for details.
 
 ---
 
 ## License
 
-Private / internal project.
+Private / internal — Terra-Mechanics Inc.

README_DL2.md

@@ -1,26 +0,0 @@
-# Series 3 Ingest Agent — 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

build.bat

@@ -0,0 +1,20 @@
+@echo off
+echo Building series3-watcher.exe...
+pip install pyinstaller pystray Pillow
+
+REM Check whether icon.ico exists alongside this script.
+REM If it does, embed it as the .exe icon AND bundle it as a data file
+REM so the tray overlay can load it at runtime.
+if exist "%~dp0icon.ico" (
+    pyinstaller --onefile --windowed --name series3-watcher ^
+        --icon="%~dp0icon.ico" ^
+        --add-data "%~dp0icon.ico;." ^
+        series3_tray.py
+) else (
+    echo [INFO] icon.ico not found -- building without custom icon.
+    pyinstaller --onefile --windowed --name series3-watcher series3_tray.py
+)
+
+echo.
+echo Done. Check dist\series3-watcher.exe
+pause

config-template.ini

@@ -5,7 +5,7 @@ API_ENABLED = true
 API_URL = 
 API_INTERVAL_SECONDS = 300
 SOURCE_ID = #computer that is running agent.
-SOURCE_TYPE = series3_agent
+SOURCE_TYPE = series3_watcher
 
 # Paths
 SERIES3_PATH = C:\Blastware 10\Event\autocall home
@@ -19,7 +19,7 @@ MISSING_HOURS = 24
 
 # Logging
 ENABLE_LOGGING     = True
-LOG_FILE           = C:\SeismoEmitter\agent_logs\series3_agent.log
+LOG_FILE           = C:\Users\%USERNAME%\AppData\Local\Series3Watcher\agent_logs\series3_watcher.log
 LOG_RETENTION_DAYS = 30
 
 # Console colors - (Doesn't work on windows 7)

installer.iss

@@ -0,0 +1,41 @@
+; Inno Setup script for Series 3 Watcher
+; Run through Inno Setup Compiler after building dist\series3-watcher.exe
+
+[Setup]
+AppName=Series 3 Watcher
+AppVersion=1.4.1
+AppPublisher=Terra-Mechanics Inc.
+DefaultDirName={pf}\Series3Watcher
+DefaultGroupName=Series 3 Watcher
+OutputBaseFilename=series3-watcher-setup
+Compression=lzma
+SolidCompression=yes
+; Require admin rights so we can write to Program Files
+PrivilegesRequired=admin
+
+[Tasks]
+Name: "desktopicon"; Description: "Create a &desktop icon"; GroupDescription: "Additional icons:"; Flags: unchecked
+
+[Dirs]
+; Create the agent_logs folder so the watcher can write logs on first run
+Name: "{app}\agent_logs"
+
+[Files]
+; Main executable — built by build.bat / PyInstaller
+Source: "dist\series3-watcher.exe"; DestDir: "{app}"; Flags: ignoreversion
+
+[Icons]
+; Start Menu shortcut
+Name: "{group}\Series 3 Watcher"; Filename: "{app}\series3-watcher.exe"
+; Start Menu uninstall shortcut
+Name: "{group}\Uninstall Series 3 Watcher"; Filename: "{uninstallexe}"
+; Desktop shortcut (optional — controlled by [Tasks] above)
+Name: "{commondesktop}\Series 3 Watcher"; Filename: "{app}\series3-watcher.exe"; Tasks: desktopicon
+; Startup folder shortcut so the tray app launches on login
+Name: "{userstartup}\Series 3 Watcher"; Filename: "{app}\series3-watcher.exe"
+
+[Run]
+; Offer to launch the app after install (unchecked by default)
+Filename: "{app}\series3-watcher.exe"; \
+    Description: "Launch Series 3 Watcher"; \
+    Flags: nowait postinstall skipifsilent unchecked

requirements.txt

@@ -1 +1,5 @@
-# Python 3.8.10 standard library only (no external packages required).
+# series3_watcher.py — stdlib only, no external packages required.
+
+# series3_tray.py — required for system tray mode:
+pystray>=0.19.5
+Pillow>=9.0.0

series3_tray.py

@@ -0,0 +1,413 @@
+"""
+Series 3 Watcher — System Tray Launcher  v1.4.1
+Requires: pystray, Pillow, tkinter (stdlib)
+
+Run with:  pythonw series3_tray.py   (no console window)
+       or: python  series3_tray.py   (with console, for debugging)
+
+Put a shortcut to this in shell:startup for auto-start on login.
+
+Python 3.8 compatible — no walrus operators, no f-string = specifier,
+no match statements, no 3.9+ syntax.
+"""
+
+import os
+import sys
+import subprocess
+import tempfile
+import threading
+import urllib.request
+import urllib.error
+from datetime import datetime
+
+import pystray
+from PIL import Image, ImageDraw
+
+import series3_watcher as watcher
+
+
+# --------------- Auto-updater ---------------
+
+GITEA_BASE    = "https://gitea.serversdown.net"
+GITEA_USER    = "serversdown"
+GITEA_REPO    = "series3-watcher"
+GITEA_API_URL = "{}/api/v1/repos/{}/{}/releases?limit=1&page=1".format(
+    GITEA_BASE, GITEA_USER, GITEA_REPO
+)
+
+# Populated from watcher version string at startup
+_CURRENT_VERSION = getattr(watcher, "VERSION", "0.0.0")
+
+
+def _version_tuple(v):
+    """Convert '1.4.0' -> (1, 4, 0) for comparison. Non-numeric parts -> 0."""
+    parts = []
+    for p in str(v).lstrip("v").split(".")[:3]:
+        try:
+            parts.append(int(p))
+        except ValueError:
+            parts.append(0)
+    while len(parts) < 3:
+        parts.append(0)
+    return tuple(parts)
+
+
+def check_for_update():
+    """
+    Query Gitea for the latest release.
+    Returns (tag, download_url) if an update is available, else (None, None).
+    """
+    import json as _json
+    try:
+        req = urllib.request.Request(
+            GITEA_API_URL,
+            headers={"User-Agent": "series3-watcher/{}".format(_CURRENT_VERSION)},
+        )
+        with urllib.request.urlopen(req, timeout=8) as resp:
+            releases = _json.loads(resp.read().decode("utf-8"))
+        if not releases:
+            return None, None
+        latest = releases[0]
+        tag = latest.get("tag_name", "")
+        if _version_tuple(tag) <= _version_tuple(_CURRENT_VERSION):
+            return None, None
+        # Find the .exe asset
+        assets = latest.get("assets", [])
+        for asset in assets:
+            name = asset.get("name", "")
+            if name.lower().endswith(".exe"):
+                return tag, asset.get("browser_download_url")
+        return tag, None
+    except Exception:
+        return None, None
+
+
+def apply_update(download_url):
+    """
+    Download new .exe to a temp file, write a swap .bat, launch it, exit.
+    The bat waits for us to exit, then swaps the files and relaunches.
+    """
+    exe_path = os.path.abspath(sys.executable if getattr(sys, "frozen", False) else sys.argv[0])
+
+    try:
+        tmp_fd, tmp_path = tempfile.mkstemp(suffix=".exe", prefix="s3w_update_")
+        os.close(tmp_fd)
+
+        req = urllib.request.Request(
+            download_url,
+            headers={"User-Agent": "series3-watcher/{}".format(_CURRENT_VERSION)},
+        )
+        with urllib.request.urlopen(req, timeout=60) as resp:
+            with open(tmp_path, "wb") as f:
+                f.write(resp.read())
+
+        bat_fd, bat_path = tempfile.mkstemp(suffix=".bat", prefix="s3w_swap_")
+        os.close(bat_fd)
+
+        bat_content = (
+            "@echo off\r\n"
+            "ping 127.0.0.1 -n 4 > nul\r\n"
+            "copy /Y \"{new}\" \"{exe}\"\r\n"
+            "start \"\" \"{exe}\"\r\n"
+            "del \"%~f0\"\r\n"
+        ).format(new=tmp_path, exe=exe_path)
+
+        with open(bat_path, "w") as f:
+            f.write(bat_content)
+
+        subprocess.Popen(
+            ["cmd", "/C", bat_path],
+            creationflags=subprocess.CREATE_NO_WINDOW if hasattr(subprocess, "CREATE_NO_WINDOW") else 0,
+        )
+        return True
+    except Exception:
+        return False
+
+
+# --------------- Paths ---------------
+
+# Executable location — used for bundled assets (icon.ico etc.)
+if getattr(sys, "frozen", False):
+    HERE = os.path.dirname(os.path.abspath(sys.executable))
+else:
+    HERE = os.path.dirname(os.path.abspath(__file__))
+
+# config.ini lives in AppData so normal users can write it without UAC issues.
+# Fall back to the exe directory when running from source (dev mode).
+if getattr(sys, "frozen", False):
+    _appdata = os.environ.get("LOCALAPPDATA") or os.environ.get("APPDATA") or HERE
+    CONFIG_DIR = os.path.join(_appdata, "Series3Watcher")
+    os.makedirs(CONFIG_DIR, exist_ok=True)
+else:
+    CONFIG_DIR = HERE
+CONFIG_PATH = os.path.join(CONFIG_DIR, "config.ini")
+
+
+# --------------- Icon drawing ---------------
+
+COLORS = {
+    "ok":       (60, 200, 80),    # green
+    "pending":  (230, 180, 0),    # amber
+    "missing":  (210, 40, 40),    # red
+    "error":    (160, 40, 200),   # purple
+    "starting": (120, 120, 120),  # grey
+}
+
+ICON_SIZE = 64
+
+
+def make_icon(status):
+    """Draw a plain colored circle for the system tray — clean and readable at 16px."""
+    color = COLORS.get(status, COLORS["starting"])
+    img = Image.new("RGBA", (ICON_SIZE, ICON_SIZE), (0, 0, 0, 0))
+    draw = ImageDraw.Draw(img)
+    margin = 6
+    draw.ellipse(
+        [margin, margin, ICON_SIZE - margin, ICON_SIZE - margin],
+        fill=color,
+    )
+    return img
+
+
+# --------------- First-run check ---------------
+
+def ensure_config():
+    """
+    If config.ini is missing, launch the first-run wizard.
+    Returns True if config is ready, False if user cancelled.
+    """
+    if os.path.exists(CONFIG_PATH):
+        return True
+
+    # Import here to avoid pulling in tkinter unless needed
+    from settings_dialog import show_dialog
+    saved = show_dialog(CONFIG_PATH, wizard=True)
+    if not saved:
+        _show_cancel_message()
+        return False
+    return True
+
+
+def _show_cancel_message():
+    """Show a plain messagebox telling the user the app cannot start."""
+    try:
+        import tkinter as tk
+        from tkinter import messagebox
+        root = tk.Tk()
+        root.withdraw()
+        messagebox.showwarning(
+            "Series 3 Watcher",
+            "No configuration was saved.\nThe application will now exit.",
+        )
+        root.destroy()
+    except Exception:
+        pass
+
+
+# --------------- Tray app ---------------
+
+class WatcherTray:
+    def __init__(self):
+        self.state = {}
+        self.stop_event = threading.Event()
+        self._watcher_thread = None
+        self._icon = None
+        # Lock guards _rebuild_menu calls from the updater thread
+        self._menu_lock = threading.Lock()
+
+    # --- Watcher thread management ---
+
+    def _start_watcher(self):
+        self.stop_event.clear()
+        self._watcher_thread = threading.Thread(
+            target=watcher.run_watcher,
+            args=(self.state, self.stop_event),
+            daemon=True,
+            name="watcher",
+        )
+        self._watcher_thread.start()
+
+    def _stop_watcher(self):
+        self.stop_event.set()
+        if self._watcher_thread is not None:
+            self._watcher_thread.join(timeout=10)
+            self._watcher_thread = None
+
+    def _restart_watcher(self):
+        """Stop any running watcher and start a fresh one."""
+        self._stop_watcher()
+        self.stop_event = threading.Event()
+        self.state["status"] = "starting"
+        self.state["units"] = []
+        self.state["last_scan"] = None
+        self.state["last_error"] = None
+        self._start_watcher()
+
+    # --- Menu item callbacks ---
+
+    def _open_settings(self, icon, item):
+        """Open the settings dialog in its own thread so the tray stays responsive."""
+        def _run():
+            from settings_dialog import show_dialog
+            saved = show_dialog(CONFIG_PATH, wizard=False)
+            if saved:
+                self._restart_watcher()
+        threading.Thread(target=_run, daemon=True, name="settings-dialog").start()
+
+    def _open_logs(self, icon, item):
+        log_dir = self.state.get("log_dir")
+        if not log_dir:
+            log_dir = HERE
+        if os.path.exists(log_dir):
+            subprocess.Popen(["explorer", log_dir])
+        else:
+            parent = os.path.dirname(log_dir)
+            if os.path.exists(parent):
+                subprocess.Popen(["explorer", parent])
+            else:
+                subprocess.Popen(["explorer", HERE])
+
+    def _exit(self, icon, item):
+        self.stop_event.set()
+        icon.stop()
+
+    # --- Dynamic menu text helpers ---
+
+    def _status_text(self):
+        status = self.state.get("status", "starting")
+        last_err = self.state.get("last_error")
+        last_scan = self.state.get("last_scan")
+
+        if status == "error":
+            return "Status: Error — {}".format(last_err or "unknown")
+        if status == "starting":
+            return "Status: Starting..."
+        if last_scan is not None:
+            age_secs = int((datetime.now() - last_scan).total_seconds())
+            if age_secs < 60:
+                age_str = "{}s ago".format(age_secs)
+            else:
+                age_str = "{}m ago".format(age_secs // 60)
+            unit_count = len(self.state.get("units", []))
+            return "Status: {} | {} unit(s) | scan {}".format(
+                status.upper(), unit_count, age_str
+            )
+        return "Status: {}".format(status.upper())
+
+    def _build_units_submenu(self):
+        units = self.state.get("units", [])
+        if not units:
+            items = [pystray.MenuItem("No units detected", None, enabled=False)]
+        else:
+            items = []
+            for u in units:
+                label = "{uid} — {status} ({age:.1f}h ago)".format(
+                    uid=u["uid"],
+                    status=u["status"],
+                    age=u["age_hours"],
+                )
+                items.append(pystray.MenuItem(label, None, enabled=False))
+        return pystray.Menu(*items)
+
+    def _build_menu(self):
+        # Use a callable for the status item so pystray re-evaluates it
+        # every time the menu is opened — keeps it in sync with the tooltip.
+        return pystray.Menu(
+            pystray.MenuItem(lambda item: self._status_text(), None, enabled=False),
+            pystray.Menu.SEPARATOR,
+            pystray.MenuItem("Units", lambda item: self._build_units_submenu()),
+            pystray.Menu.SEPARATOR,
+            pystray.MenuItem("Settings...", self._open_settings),
+            pystray.MenuItem("Open Log Folder", self._open_logs),
+            pystray.Menu.SEPARATOR,
+            pystray.MenuItem("Exit", self._exit),
+        )
+
+    # --- Icon / menu update loop ---
+
+    def _icon_updater(self):
+        """Periodically refresh the tray icon color and menu to match watcher state."""
+        last_status = None
+        update_check_counter = 0  # check for updates every ~5 min (30 * 10s ticks)
+
+        while not self.stop_event.is_set():
+            status = self.state.get("status", "starting")
+
+            if self._icon is not None:
+                # Always rebuild menu every cycle so unit list and scan age stay fresh
+                with self._menu_lock:
+                    self._icon.menu = self._build_menu()
+
+                if status != last_status:
+                    self._icon.icon = make_icon(status)
+                    self._icon.title = "Series 3 Watcher — {}".format(status.upper())
+                    last_status = status
+
+            # Check if terra-view signalled an update via heartbeat response
+            if self.state.get("update_available"):
+                self.state["update_available"] = False
+                self._do_update()
+                return  # exit loop; swap bat will relaunch
+
+            # Periodic Gitea update check (every ~5 min)
+            update_check_counter += 1
+            if update_check_counter >= 30:
+                update_check_counter = 0
+                tag, url = check_for_update()
+                if tag and url:
+                    self._do_update(url)
+                    return  # exit loop; swap bat will relaunch
+
+            self.stop_event.wait(timeout=10)
+
+    def _do_update(self, download_url=None):
+        """Notify tray icon then apply update. If url is None, fetch it first."""
+        if download_url is None:
+            _, download_url = check_for_update()
+        if not download_url:
+            return
+
+        if self._icon is not None:
+            self._icon.title = "Series 3 Watcher — Updating..."
+            self._icon.icon = make_icon("starting")
+
+        success = apply_update(download_url)
+        if success:
+            self.stop_event.set()
+            if self._icon is not None:
+                self._icon.stop()
+        # If update failed, just keep running silently
+
+    # --- Entry point ---
+
+    def run(self):
+        self._start_watcher()
+
+        icon_img = make_icon("starting")
+        self._icon = pystray.Icon(
+            name="series3_watcher",
+            icon=icon_img,
+            title="Series 3 Watcher — Starting...",
+            menu=self._build_menu(),
+        )
+
+        updater = threading.Thread(
+            target=self._icon_updater, daemon=True, name="icon-updater"
+        )
+        updater.start()
+
+        self._icon.run()
+
+
+# --------------- Entry point ---------------
+
+def main():
+    if not ensure_config():
+        sys.exit(0)
+
+    app = WatcherTray()
+    app.run()
+
+
+if __name__ == "__main__":
+    main()

series3_watcher.py

@@ -1,5 +1,5 @@
 """
-Series 3 Ingest Agent — v1.2.1
+Series 3 Watcher — v1.4.1
 
 Environment:
 - Python 3.8 (Windows 7 compatible)
@@ -12,15 +12,15 @@ Key Features:
 - Safe .MLG header sniff for unit IDs (BE#### / BA####)
 - Standardized SFM Telemetry JSON payload (source-agnostic)
 - Periodic HTTP heartbeat POST to SFM backend
-- NEW in v1.2.0:
+- Tray-friendly: run_watcher(state, stop_event) for background thread use
-  - No local roster / CSV dependency
-  - Only scans .MLG files newer than MAX_EVENT_AGE_DAYS
 """
 
 import os
 import re
+import sys
 import time
 import json
+import threading
 import configparser
 import urllib.request
 import urllib.error
@@ -63,7 +63,10 @@ def load_config(path: str) -> Dict[str, Any]:
         "OK_HOURS": float(get_int("OK_HOURS", 12)),
         "MISSING_HOURS": float(get_int("MISSING_HOURS", 24)),
         "ENABLE_LOGGING": get_bool("ENABLE_LOGGING", True),
-        "LOG_FILE": get_str("LOG_FILE", r"C:\SeismoEmitter\agent_logs\series3_agent.log"),
+        "LOG_FILE": get_str("LOG_FILE", os.path.join(
+            os.environ.get("LOCALAPPDATA") or os.environ.get("APPDATA") or "C:\\",
+            "Series3Watcher", "agent_logs", "series3_watcher.log"
+        )),
         "LOG_RETENTION_DAYS": get_int("LOG_RETENTION_DAYS", 30),
         "COLORIZE": get_bool("COLORIZE", False),  # Win7 default off
         "MLG_HEADER_BYTES": max(256, min(get_int("MLG_HEADER_BYTES", 2048), 65536)),
@@ -75,7 +78,7 @@ def load_config(path: str) -> Dict[str, Any]:
         "API_URL": get_str("API_URL", ""),
         "API_INTERVAL_SECONDS": get_int("API_INTERVAL_SECONDS", 300),
         "SOURCE_ID": get_str("SOURCE_ID", gethostname()),
-        "SOURCE_TYPE": get_str("SOURCE_TYPE", "series3_ingest_agent"),
+        "SOURCE_TYPE": get_str("SOURCE_TYPE", "series3_watcher"),
     }
 
 
@@ -95,7 +98,7 @@ def log_message(path: str, enabled: bool, msg: str) -> None:
         with open(path, "a", encoding="utf-8") as f:
             f.write("{} {}\n".format(datetime.now(timezone.utc).isoformat(), msg))
     except Exception:
-        # Logging must never crash the agent
+        # Logging must never crash the watcher
         pass
 
 
@@ -205,7 +208,7 @@ def scan_latest(
                         # If unsniffable but very recent, log for later inspection
                         if (recent_cutoff is not None) and (mtime >= recent_cutoff):
                             if logger:
-                                logger(f"[unsniffable-recent] {fpath}")
+                                logger("[unsniffable-recent] {}".format(fpath))
                         continue  # skip file if no unit ID found in header
                     cache[fpath] = (mtime, uid)
 
@@ -217,16 +220,37 @@ def scan_latest(
 
 
 # --- API heartbeat / SFM telemetry helpers ---
-def send_api_payload(payload: dict, api_url: str) -> None:
+VERSION = "1.4.1"
+
+
+def _read_log_tail(log_file: str, n: int = 25) -> Optional[list]:
+    """Return the last n lines of the log file as a list of strings, or None on failure."""
+    if not log_file:
+        return None
+    try:
+        with open(log_file, "r", errors="replace") as f:
+            lines = f.readlines()
+        return [l.rstrip("\n") for l in lines[-n:]]
+    except Exception:
+        return None
+
+
+def send_api_payload(payload: dict, api_url: str) -> Optional[dict]:
+    """POST payload to API. Returns parsed JSON response dict, or None on failure."""
     if not api_url:
-        return
+        return None
     data = json.dumps(payload).encode("utf-8")
     req = urllib.request.Request(api_url, data=data, headers={"Content-Type": "application/json"})
     try:
         with urllib.request.urlopen(req, timeout=5) as res:
-            print(f"[API] POST success: {res.status}")
+            print("[API] POST success: {}".format(res.status))
+            try:
+                return json.loads(res.read().decode("utf-8"))
+            except Exception:
+                return None
     except urllib.error.URLError as e:
-        print(f"[API] POST failed: {e}")
+        print("[API] POST failed: {}".format(e))
+        return None
 
 
 def build_sfm_payload(units_dict: Dict[str, Dict[str, Any]], cfg: Dict[str, Any]) -> dict:
@@ -239,7 +263,7 @@ def build_sfm_payload(units_dict: Dict[str, Dict[str, Any]], cfg: Dict[str, Any]
 
     payload = {
         "source_id": cfg.get("SOURCE_ID", gethostname()),
-        "source_type": cfg.get("SOURCE_TYPE", "series3_ingest_agent"),
+        "source_type": cfg.get("SOURCE_TYPE", "series3_watcher"),
         "timestamp": now_iso,
         "units": [],
     }
@@ -280,10 +304,44 @@ def build_sfm_payload(units_dict: Dict[str, Dict[str, Any]], cfg: Dict[str, Any]
     return payload
 
 
-# --------------- Main loop ------------------
+# --------------- Watcher loop (tray-friendly) ----------------
-def main() -> None:
+def run_watcher(state: Dict[str, Any], stop_event: threading.Event) -> None:
-    here = os.path.dirname(__file__) or "."
+    """
-    cfg = load_config(os.path.join(here, "config.ini"))
+    Main watcher loop. Runs in a background thread when launched from the tray.
+
+    state dict is written on every scan cycle:
+      state["status"]        — "ok" | "pending" | "missing" | "error" | "starting"
+      state["units"]         — list of dicts: {uid, status, age_hours, last, fname}
+      state["last_scan"]     — datetime of last successful scan (or None)
+      state["last_error"]    — last error string (or None)
+      state["log_dir"]       — directory containing the log file
+      state["cfg"]           — loaded config dict
+    """
+    if getattr(sys, "frozen", False):
+        here = os.path.dirname(os.path.abspath(sys.executable))
+        _appdata = os.environ.get("LOCALAPPDATA") or os.environ.get("APPDATA") or here
+        config_dir = os.path.join(_appdata, "Series3Watcher")
+    else:
+        here = os.path.dirname(os.path.abspath(__file__)) or "."
+        config_dir = here
+    config_path = os.path.join(config_dir, "config.ini")
+
+    state["status"] = "starting"
+    state["units"] = []
+    state["last_scan"] = None
+    state["last_error"] = None
+    state["log_dir"] = None
+    state["cfg"] = {}
+
+    try:
+        cfg = load_config(config_path)
+    except Exception as e:
+        state["status"] = "error"
+        state["last_error"] = "Config load failed: {}".format(e)
+        return
+
+    state["cfg"] = cfg
+    state["log_dir"] = os.path.dirname(cfg["LOG_FILE"]) or here
 
     WATCH_PATH = cfg["WATCH_PATH"]
     SCAN_INTERVAL = int(cfg["SCAN_INTERVAL"])
@@ -315,12 +373,10 @@ def main() -> None:
         ),
     )
 
-    # cache for scanning
     sniff_cache: Dict[str, Tuple[float, str]] = {}
-
     last_api_ts: float = 0.0
 
-    while True:
+    while not stop_event.is_set():
         try:
             now_local = datetime.now().isoformat()
             now_utc = datetime.now(timezone.utc).isoformat()
@@ -342,24 +398,41 @@ def main() -> None:
             )
             now_epoch = time.time()
 
-            # Detected units summary (no roster dependency)
+            # Build per-unit status list for the tray
+            unit_list = []
+            worst = "ok"  # tracks worst status across all units
+
             if latest:
                 print("\nDetected Units (within last {} days):".format(MAX_EVENT_AGE_DAYS))
                 for uid in sorted(latest.keys()):
                     info = latest[uid]
                     age_hours = (now_epoch - info["mtime"]) / 3600.0
                     if age_hours > MISSING_HOURS:
-                        status, col = "Missing", C_MIS
+                        status, col = "missing", C_MIS
                     elif age_hours > OK_HOURS:
-                        status, col = "Pending", C_PEN
+                        status, col = "pending", C_PEN
                     else:
-                        status, col = "OK", C_OK
+                        status, col = "ok", C_OK
+
+                    # escalate worst status
+                    if status == "missing":
+                        worst = "missing"
+                    elif status == "pending" and worst != "missing":
+                        worst = "pending"
+
+                    unit_list.append({
+                        "uid": uid,
+                        "status": status,
+                        "age_hours": age_hours,
+                        "last": fmt_last(info["mtime"]),
+                        "fname": info["fname"],
+                    })
 
                     line = (
                         "{col}{uid:<8} {status:<8} Age: {age:<7} Last: {last}  (File: {fname}){rst}".format(
                             col=col,
                             uid=uid,
-                            status=status,
+                            status=status.capitalize(),
                             age=fmt_age(now_epoch, info["mtime"]),
                             last=fmt_last(info["mtime"]),
                             fname=info["fname"],
@@ -375,25 +448,48 @@ def main() -> None:
                     ENABLE_LOGGING,
                     "[info] no recent MLG activity within {} days".format(MAX_EVENT_AGE_DAYS),
                 )
+                worst = "missing"
+
+            # Update shared state for tray
+            state["status"] = worst
+            state["units"] = unit_list
+            state["last_scan"] = datetime.now()
+            state["last_error"] = None
 
             # ---- API heartbeat to SFM ----
             if cfg.get("API_ENABLED", False):
                 now_ts = time.time()
                 interval = int(cfg.get("API_INTERVAL_SECONDS", 300))
                 if now_ts - last_api_ts >= interval:
-                    payload = build_sfm_payload(latest, cfg)
+                    hb_payload = build_sfm_payload(latest, cfg)
-                    send_api_payload(payload, cfg.get("API_URL", ""))
+                    hb_payload["version"] = VERSION
+                    hb_payload["log_tail"] = _read_log_tail(cfg.get("LOG_FILE", ""), 25)
+                    response = send_api_payload(hb_payload, cfg.get("API_URL", ""))
                     last_api_ts = now_ts
+                    # Surface update signal to tray
+                    if response and response.get("update_available"):
+                        state["update_available"] = True
 
-        except KeyboardInterrupt:
-            print("\nStopping...")
-            break
         except Exception as e:
             err = "[loop-error] {}".format(e)
             print(err)
             log_message(LOG_FILE, ENABLE_LOGGING, err)
+            state["status"] = "error"
+            state["last_error"] = str(e)
 
-        time.sleep(SCAN_INTERVAL)
+        # Interruptible sleep: wake immediately if stop_event fires
+        stop_event.wait(timeout=SCAN_INTERVAL)
+
+
+# --------------- Main (standalone) ------------------
+def main() -> None:
+    state = {}
+    stop_event = threading.Event()
+    try:
+        run_watcher(state, stop_event)
+    except KeyboardInterrupt:
+        print("\nStopping...")
+        stop_event.set()
 
 
 if __name__ == "__main__":

settings_dialog.py

@@ -0,0 +1,530 @@
+"""
+Series 3 Watcher — Settings Dialog  v1.4.0
+
+Provides a Tkinter settings dialog that doubles as a first-run wizard.
+
+Public API:
+    show_dialog(config_path, wizard=False) -> bool
+        Returns True if the user saved, False if they cancelled.
+
+Python 3.8 compatible — no walrus operators, no f-string = specifier,
+no match statements, no 3.9+ syntax.
+No external dependencies beyond stdlib + tkinter.
+"""
+
+import os
+import configparser
+import tkinter as tk
+from tkinter import ttk, filedialog, messagebox
+from socket import gethostname
+
+
+# --------------- Defaults (mirror config-template.ini) ---------------
+
+DEFAULTS = {
+    "API_ENABLED":          "true",
+    "API_URL":              "",
+    "API_INTERVAL_SECONDS": "300",
+    "SOURCE_ID":            "",          # empty = use hostname at runtime
+    "SOURCE_TYPE":          "series3_watcher",
+    "SERIES3_PATH":         r"C:\Blastware 10\Event\autocall home",
+    "MAX_EVENT_AGE_DAYS":   "365",
+    "SCAN_INTERVAL_SECONDS":"300",
+    "OK_HOURS":             "12",
+    "MISSING_HOURS":        "24",
+    "MLG_HEADER_BYTES":     "2048",
+    "ENABLE_LOGGING":       "true",
+    "LOG_FILE":             os.path.join(
+                                os.environ.get("LOCALAPPDATA") or os.environ.get("APPDATA") or "C:\\",
+                                "Series3Watcher", "agent_logs", "series3_watcher.log"
+                            ),
+    "LOG_RETENTION_DAYS":   "30",
+    "COLORIZE":             "false",
+}
+
+
+# --------------- Config I/O ---------------
+
+def _load_config(config_path):
+    """
+    Load existing config.ini.  Returns a flat dict of string values.
+    Falls back to DEFAULTS for any missing key.
+    """
+    values = dict(DEFAULTS)
+    if not os.path.exists(config_path):
+        return values
+
+    cp = configparser.ConfigParser(inline_comment_prefixes=(";", "#"))
+    cp.optionxform = str
+    try:
+        cp.read(config_path, encoding="utf-8")
+    except Exception:
+        return values
+
+    # Accept either [agent] section or a bare file
+    section = None
+    if cp.has_section("agent"):
+        section = "agent"
+    elif cp.sections():
+        section = cp.sections()[0]
+
+    if section:
+        for k in DEFAULTS:
+            if cp.has_option(section, k):
+                values[k] = cp.get(section, k).strip()
+
+    return values
+
+
+def _save_config(config_path, values):
+    """Write all values to config_path under [agent] section."""
+    cp = configparser.ConfigParser()
+    cp.optionxform = str
+    cp["agent"] = {}
+    for k, v in values.items():
+        cp["agent"][k] = v
+
+    config_dir = os.path.dirname(config_path)
+    if config_dir and not os.path.exists(config_dir):
+        os.makedirs(config_dir)
+
+    with open(config_path, "w", encoding="utf-8") as f:
+        cp.write(f)
+
+
+# --------------- Spinbox helper ---------------
+
+def _make_spinbox(parent, from_, to, width=8):
+    """Create a ttk.Spinbox; fall back to tk.Spinbox on older ttk."""
+    try:
+        sb = ttk.Spinbox(parent, from_=from_, to=to, width=width)
+    except AttributeError:
+        # ttk.Spinbox added in Python 3.7 but not available everywhere
+        sb = tk.Spinbox(parent, from_=from_, to=to, width=width)
+    return sb
+
+
+# --------------- Field helpers ---------------
+
+def _add_label_entry(frame, row, label_text, var, hint=None, readonly=False):
+    """Add a label + entry row to a grid frame. Returns the Entry widget."""
+    tk.Label(frame, text=label_text, anchor="w").grid(
+        row=row, column=0, sticky="w", padx=(8, 4), pady=4
+    )
+    state = "readonly" if readonly else "normal"
+    entry = ttk.Entry(frame, textvariable=var, width=42, state=state)
+    entry.grid(row=row, column=1, sticky="ew", padx=(0, 8), pady=4)
+    if hint and not var.get():
+        # Show placeholder hint in grey; clear on focus
+        entry.config(foreground="grey")
+        entry.insert(0, hint)
+
+        def _on_focus_in(event, e=entry, h=hint, v=var):
+            if e.get() == h:
+                e.delete(0, tk.END)
+                e.config(foreground="black")
+
+        def _on_focus_out(event, e=entry, h=hint, v=var):
+            if not e.get():
+                e.config(foreground="grey")
+                e.insert(0, h)
+                v.set("")
+
+        entry.bind("<FocusIn>", _on_focus_in)
+        entry.bind("<FocusOut>", _on_focus_out)
+    return entry
+
+
+def _add_label_spinbox(frame, row, label_text, var, from_, to):
+    """Add a label + spinbox row to a grid frame. Returns the Spinbox widget."""
+    tk.Label(frame, text=label_text, anchor="w").grid(
+        row=row, column=0, sticky="w", padx=(8, 4), pady=4
+    )
+    sb = _make_spinbox(frame, from_=from_, to=to, width=8)
+    sb.grid(row=row, column=1, sticky="w", padx=(0, 8), pady=4)
+    sb.delete(0, tk.END)
+    sb.insert(0, var.get())
+
+    def _on_change(*args):
+        var.set(sb.get())
+
+    sb.config(command=_on_change)
+    sb.bind("<KeyRelease>", _on_change)
+    return sb
+
+
+def _add_label_check(frame, row, label_text, var):
+    """Add a checkbox row to a grid frame."""
+    cb = ttk.Checkbutton(frame, text=label_text, variable=var)
+    cb.grid(row=row, column=0, columnspan=2, sticky="w", padx=(8, 8), pady=4)
+    return cb
+
+
+def _add_label_browse_entry(frame, row, label_text, var, browse_fn):
+    """Add a label + entry + Browse button row."""
+    tk.Label(frame, text=label_text, anchor="w").grid(
+        row=row, column=0, sticky="w", padx=(8, 4), pady=4
+    )
+    inner = tk.Frame(frame)
+    inner.grid(row=row, column=1, sticky="ew", padx=(0, 8), pady=4)
+    inner.columnconfigure(0, weight=1)
+
+    entry = ttk.Entry(inner, textvariable=var, width=36)
+    entry.grid(row=0, column=0, sticky="ew")
+    btn = ttk.Button(inner, text="Browse...", command=browse_fn, width=9)
+    btn.grid(row=0, column=1, padx=(4, 0))
+    return entry
+
+
+# --------------- Main dialog class ---------------
+
+class SettingsDialog:
+    def __init__(self, parent, config_path, wizard=False):
+        self.config_path = config_path
+        self.wizard = wizard
+        self.saved = False
+
+        self.root = parent
+        if wizard:
+            self.root.title("Series 3 Watcher — Setup")
+        else:
+            self.root.title("Series 3 Watcher — Settings")
+        self.root.resizable(False, False)
+
+        # Center on screen
+        self.root.update_idletasks()
+
+        self._values = _load_config(config_path)
+        self._build_vars()
+        self._build_ui()
+
+        # Make dialog modal
+        self.root.grab_set()
+        self.root.protocol("WM_DELETE_WINDOW", self._on_cancel)
+
+    # --- Variable setup ---
+
+    def _build_vars(self):
+        v = self._values
+
+        # Connection
+        self.var_api_enabled        = tk.BooleanVar(value=v["API_ENABLED"].lower() in ("1","true","yes","on"))
+        # Strip the fixed endpoint suffix so the dialog shows just the base URL
+        _raw_url = v["API_URL"]
+        _suffix = "/api/series3/heartbeat"
+        if _raw_url.endswith(_suffix):
+            _raw_url = _raw_url[:-len(_suffix)]
+        self.var_api_url            = tk.StringVar(value=_raw_url)
+        self.var_api_interval       = tk.StringVar(value=v["API_INTERVAL_SECONDS"])
+        self.var_source_id          = tk.StringVar(value=v["SOURCE_ID"])
+        self.var_source_type        = tk.StringVar(value=v["SOURCE_TYPE"])
+
+        # Paths
+        self.var_series3_path       = tk.StringVar(value=v["SERIES3_PATH"])
+        self.var_max_event_age_days = tk.StringVar(value=v["MAX_EVENT_AGE_DAYS"])
+        self.var_log_file           = tk.StringVar(value=v["LOG_FILE"])
+
+        # Scanning
+        self.var_scan_interval      = tk.StringVar(value=v["SCAN_INTERVAL_SECONDS"])
+        self.var_ok_hours           = tk.StringVar(value=v["OK_HOURS"])
+        self.var_missing_hours      = tk.StringVar(value=v["MISSING_HOURS"])
+        self.var_mlg_header_bytes   = tk.StringVar(value=v["MLG_HEADER_BYTES"])
+
+        # Logging
+        self.var_enable_logging     = tk.BooleanVar(value=v["ENABLE_LOGGING"].lower() in ("1","true","yes","on"))
+        self.var_log_retention_days = tk.StringVar(value=v["LOG_RETENTION_DAYS"])
+        self.var_colorize           = tk.BooleanVar(value=v["COLORIZE"].lower() in ("1","true","yes","on"))
+
+    # --- UI construction ---
+
+    def _build_ui(self):
+        outer = tk.Frame(self.root, padx=10, pady=8)
+        outer.pack(fill="both", expand=True)
+
+        if self.wizard:
+            welcome = (
+                "Welcome to Series 3 Watcher!\n\n"
+                "No configuration file was found. Please review the settings below\n"
+                "and click \"Save & Start\" when you are ready."
+            )
+            lbl = tk.Label(
+                outer, text=welcome, justify="left",
+                wraplength=460, fg="#1a5276", font=("TkDefaultFont", 9, "bold"),
+            )
+            lbl.pack(fill="x", pady=(0, 8))
+
+        # Notebook
+        nb = ttk.Notebook(outer)
+        nb.pack(fill="both", expand=True)
+
+        self._build_tab_connection(nb)
+        self._build_tab_paths(nb)
+        self._build_tab_scanning(nb)
+        self._build_tab_logging(nb)
+
+        # Buttons
+        btn_frame = tk.Frame(outer)
+        btn_frame.pack(fill="x", pady=(10, 0))
+
+        save_label = "Save & Start" if self.wizard else "Save"
+        btn_save = ttk.Button(btn_frame, text=save_label, command=self._on_save, width=14)
+        btn_save.pack(side="right", padx=(4, 0))
+
+        btn_cancel = ttk.Button(btn_frame, text="Cancel", command=self._on_cancel, width=10)
+        btn_cancel.pack(side="right")
+
+    def _tab_frame(self, nb, title):
+        """Create a new tab in nb, return a scrollable inner frame."""
+        outer = tk.Frame(nb, padx=4, pady=4)
+        nb.add(outer, text=title)
+        outer.columnconfigure(1, weight=1)
+        return outer
+
+    def _build_tab_connection(self, nb):
+        f = self._tab_frame(nb, "Connection")
+
+        _add_label_check(f, 0, "API Enabled", self.var_api_enabled)
+
+        # URL row — entry + Test button in an inner frame
+        tk.Label(f, text="Terra-View URL", anchor="w").grid(
+            row=1, column=0, sticky="w", padx=(8, 4), pady=4
+        )
+        url_frame = tk.Frame(f)
+        url_frame.grid(row=1, column=1, sticky="ew", padx=(0, 8), pady=4)
+        url_frame.columnconfigure(0, weight=1)
+
+        url_entry = ttk.Entry(url_frame, textvariable=self.var_api_url, width=32)
+        url_entry.grid(row=0, column=0, sticky="ew")
+
+        # Placeholder hint behaviour
+        _hint = "http://192.168.x.x:8000"
+        if not self.var_api_url.get():
+            url_entry.config(foreground="grey")
+            url_entry.insert(0, _hint)
+            def _on_focus_in(e):
+                if url_entry.get() == _hint:
+                    url_entry.delete(0, tk.END)
+                    url_entry.config(foreground="black")
+            def _on_focus_out(e):
+                if not url_entry.get():
+                    url_entry.config(foreground="grey")
+                    url_entry.insert(0, _hint)
+                    self.var_api_url.set("")
+            url_entry.bind("<FocusIn>", _on_focus_in)
+            url_entry.bind("<FocusOut>", _on_focus_out)
+
+        self._test_btn = ttk.Button(url_frame, text="Test", width=6,
+                                    command=self._test_connection)
+        self._test_btn.grid(row=0, column=1, padx=(4, 0))
+
+        self._test_status = tk.Label(url_frame, text="", anchor="w", width=20)
+        self._test_status.grid(row=0, column=2, padx=(6, 0))
+
+        _add_label_spinbox(f, 2, "API Interval (sec)", self.var_api_interval, 30, 3600)
+
+        source_id_hint = "Defaults to hostname ({})".format(gethostname())
+        _add_label_entry(f, 3, "Source ID", self.var_source_id, hint=source_id_hint)
+
+        _add_label_entry(f, 4, "Source Type", self.var_source_type, readonly=True)
+
+    def _test_connection(self):
+        """POST a minimal ping to the Terra-View heartbeat endpoint and show result."""
+        import urllib.request
+        import urllib.error
+
+        self._test_status.config(text="Testing...", foreground="grey")
+        self._test_btn.config(state="disabled")
+        self.root.update_idletasks()
+
+        raw = self.var_api_url.get().strip()
+        if not raw or raw == "http://192.168.x.x:8000":
+            self._test_status.config(text="Enter a URL first", foreground="orange")
+            self._test_btn.config(state="normal")
+            return
+
+        url = raw.rstrip("/") + "/health"
+
+        try:
+            req = urllib.request.Request(url)
+            with urllib.request.urlopen(req, timeout=5) as resp:
+                if resp.status == 200:
+                    self._test_status.config(text="Connected!", foreground="green")
+                else:
+                    self._test_status.config(
+                        text="HTTP {}".format(resp.status), foreground="orange"
+                    )
+        except urllib.error.URLError as e:
+            reason = str(e.reason) if hasattr(e, "reason") else str(e)
+            self._test_status.config(text="Failed: {}".format(reason[:30]), foreground="red")
+        except Exception as e:
+            self._test_status.config(text="Error: {}".format(str(e)[:30]), foreground="red")
+        finally:
+            self._test_btn.config(state="normal")
+
+    def _build_tab_paths(self, nb):
+        f = self._tab_frame(nb, "Paths")
+
+        def browse_series3():
+            d = filedialog.askdirectory(
+                title="Select Blastware Event Folder",
+                initialdir=self.var_series3_path.get() or "C:\\",
+            )
+            if d:
+                self.var_series3_path.set(d.replace("/", "\\"))
+
+        _add_label_browse_entry(f, 0, "Series3 Path", self.var_series3_path, browse_series3)
+        _add_label_spinbox(f, 1, "Max Event Age (days)", self.var_max_event_age_days, 1, 3650)
+
+        def browse_log():
+            p = filedialog.asksaveasfilename(
+                title="Select Log File",
+                defaultextension=".log",
+                filetypes=[("Log files", "*.log"), ("Text files", "*.txt"), ("All files", "*.*")],
+                initialfile=os.path.basename(self.var_log_file.get() or "series3_watcher.log"),
+                initialdir=os.path.dirname(self.var_log_file.get() or "C:\\"),
+            )
+            if p:
+                self.var_log_file.set(p.replace("/", "\\"))
+
+        _add_label_browse_entry(f, 2, "Log File", self.var_log_file, browse_log)
+
+    def _build_tab_scanning(self, nb):
+        f = self._tab_frame(nb, "Scanning")
+        _add_label_spinbox(f, 0, "Scan Interval (sec)", self.var_scan_interval, 10, 3600)
+        _add_label_spinbox(f, 1, "OK Hours", self.var_ok_hours, 1, 168)
+        _add_label_spinbox(f, 2, "Missing Hours", self.var_missing_hours, 1, 168)
+        _add_label_spinbox(f, 3, "MLG Header Bytes", self.var_mlg_header_bytes, 256, 65536)
+
+    def _build_tab_logging(self, nb):
+        f = self._tab_frame(nb, "Logging")
+        _add_label_check(f, 0, "Enable Logging", self.var_enable_logging)
+        _add_label_spinbox(f, 1, "Log Retention (days)", self.var_log_retention_days, 1, 365)
+        _add_label_check(f, 2, "Colorize console output", self.var_colorize)
+
+    # --- Validation helpers ---
+
+    def _get_int_var(self, var, name, min_val, max_val, default):
+        """Parse a StringVar as int, clamp to range, return clamped value or None on error."""
+        raw = var.get().strip()
+        try:
+            val = int(raw)
+        except ValueError:
+            messagebox.showerror(
+                "Validation Error",
+                "{} must be an integer (got: {!r}).".format(name, raw),
+            )
+            return None
+        if val < min_val or val > max_val:
+            messagebox.showerror(
+                "Validation Error",
+                "{} must be between {} and {} (got {}).".format(name, min_val, max_val, val),
+            )
+            return None
+        return val
+
+    # --- Save / Cancel ---
+
+    def _on_save(self):
+        # Validate numeric fields before writing
+        checks = [
+            (self.var_api_interval,       "API Interval",         30,  3600,  300),
+            (self.var_max_event_age_days,  "Max Event Age Days",    1,  3650,  365),
+            (self.var_scan_interval,       "Scan Interval",        10,  3600,  300),
+            (self.var_ok_hours,            "OK Hours",              1,   168,   12),
+            (self.var_missing_hours,       "Missing Hours",         1,   168,   24),
+            (self.var_mlg_header_bytes,    "MLG Header Bytes",    256, 65536, 2048),
+            (self.var_log_retention_days,  "Log Retention Days",    1,   365,   30),
+        ]
+        int_values = {}
+        for var, name, mn, mx, dflt in checks:
+            result = self._get_int_var(var, name, mn, mx, dflt)
+            if result is None:
+                return  # validation failed; keep dialog open
+            int_values[name] = result
+
+        # Resolve source_id placeholder
+        source_id = self.var_source_id.get().strip()
+        # Strip placeholder hint if user left it
+        if source_id.startswith("Defaults to hostname"):
+            source_id = ""
+
+        # Resolve api_url — append the fixed endpoint, strip placeholder
+        api_url = self.var_api_url.get().strip()
+        if api_url == "http://192.168.x.x:8000" or not api_url:
+            api_url = ""
+        else:
+            api_url = api_url.rstrip("/") + "/api/series3/heartbeat"
+
+        values = {
+            "API_ENABLED":          "true" if self.var_api_enabled.get() else "false",
+            "API_URL":              api_url,
+            "API_INTERVAL_SECONDS": str(int_values["API Interval"]),
+            "SOURCE_ID":            source_id,
+            "SOURCE_TYPE":          self.var_source_type.get().strip() or "series3_watcher",
+            "SERIES3_PATH":         self.var_series3_path.get().strip(),
+            "MAX_EVENT_AGE_DAYS":   str(int_values["Max Event Age Days"]),
+            "SCAN_INTERVAL_SECONDS":str(int_values["Scan Interval"]),
+            "OK_HOURS":             str(int_values["OK Hours"]),
+            "MISSING_HOURS":        str(int_values["Missing Hours"]),
+            "MLG_HEADER_BYTES":     str(int_values["MLG Header Bytes"]),
+            "ENABLE_LOGGING":       "true" if self.var_enable_logging.get() else "false",
+            "LOG_FILE":             self.var_log_file.get().strip(),
+            "LOG_RETENTION_DAYS":   str(int_values["Log Retention Days"]),
+            "COLORIZE":             "true" if self.var_colorize.get() else "false",
+        }
+
+        try:
+            _save_config(self.config_path, values)
+        except Exception as e:
+            messagebox.showerror("Save Error", "Could not write config.ini:\n{}".format(e))
+            return
+
+        self.saved = True
+        self.root.destroy()
+
+    def _on_cancel(self):
+        self.saved = False
+        self.root.destroy()
+
+
+# --------------- Public API ---------------
+
+def show_dialog(config_path, wizard=False):
+    """
+    Open the settings dialog.
+
+    Parameters
+    ----------
+    config_path : str
+        Absolute path to config.ini (read if it exists, written on Save).
+    wizard : bool
+        If True, shows first-run welcome message and "Save & Start" button.
+
+    Returns
+    -------
+    bool
+        True if the user saved, False if they cancelled.
+    """
+    root = tk.Tk()
+    root.withdraw()          # hide blank root window
+
+    # Create a Toplevel that acts as the dialog window
+    top = tk.Toplevel(root)
+    top.deiconify()
+
+    dlg = SettingsDialog(top, config_path, wizard=wizard)
+
+    # Center after build
+    top.update_idletasks()
+    w = top.winfo_reqwidth()
+    h = top.winfo_reqheight()
+    sw = top.winfo_screenwidth()
+    sh = top.winfo_screenheight()
+    x = (sw - w) // 2
+    y = (sh - h) // 2
+    top.geometry("{}x{}+{}+{}".format(w, h, x, y))
+
+    root.wait_window(top)
+    root.destroy()
+
+    return dlg.saved