Gnomon Control & Live Status

1. Gnomon Process Control

• Implemented start/stop buttons in the Gnomon manager page (gnomon.js) that now successfully launch and terminate the gnomonindexer process.
• Fixed the renderer ↔ main communication using ipcRenderer.invoke and ipcMain.handle for gnomon:start and gnomon:stop.
• Ensured persistent state of Gnomon with a gnomonRunning flag to track whether it’s active.

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2. Gnomon Status Checking

• Added check-gnomon handler to verify if Gnomon’s API is responsive (via HTTP request to 127.0.0.1:8099).
• Added gnomon:get-info to fetch detailed information from Gnomon’s /api/getinfo.
• Updated the Gnomon manager UI to reflect running/stopped status with a yellow/green/red LED indicator.

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3. Live Logs

• Wired up gnomon-log events to stream stdout/stderr from the Gnomon process to the renderer.
• Ensured logs are displayable in real-time, though some display issues remain in the UI.

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4. Start Page (start.html) Integration

• Explored auto-refresh / live updates when Gnomon starts.
• Integrated SCID fetching via the Gnomon API (/indexedscs and /scvarsbyheight).
• Not fully functional yet: SCIDs don’t update live when Gnomon starts or indexes new entries.

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5. App Lifecycle & Cleanup

• Implemented graceful shutdown of Gnomon when the app closes:

  • Listens for before-quit, window-all-closed, SIGINT, SIGTERM.
  • Sends SIGINT to Gnomon and waits for exit.
  • Fallback timeout to SIGKILL in case it hangs.

• Prevents orphaned Gnomon processes.

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6. Debugging & Renderer Safety

• Added checks in the renderer (gnomon.js) to ensure electronAPI is available.
• Allowed logs and state updates even if Gnomon crashes or is stopped manually.