fix: add TSC watch for main process hot-reload in dev mode

[belnadris]

Summary

• Add electron:serve-tsc:watch script: runs tsc -p tsconfig.serve.json --watch --preserveWatchOutput
• Add electron:start script: electron . --serve
• Update electron:serve to: initial compile → then run TSC watch + Electron in parallel

Problem

Since PR #859 applied { watchRenderer: false } to electron-reloader, the reloader only watches app/main.js for changes. But electron:serve-tsc was a one-time compile with no --watch, so app/main.js never changed during dev. Changes to app/main.ts had no effect until manually restarting npm start.

How it works

1. wait-on tcp:4200 — waits for Angular dev server
2. npm run electron:serve-tsc — one-time compile so app/main.js exists before Electron starts
3. npm-run-all -p electron:serve-tsc:watch electron:start — runs TSC watch + Electron in parallel
   • TSC watch recompiles app/main.js on every app/main.ts save
   • electron-reloader detects the updated app/main.js → relaunches Electron

Test plan

• npm run lint passes
• npm run build passes
• npm start, edit app/main.ts, save → Electron restarts with changes applied

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR fixes the main process hot-reload functionality in development mode by adding TypeScript compilation watch mode. After PR #859 disabled renderer watching in electron-reloader, main process changes were no longer detected because the initial electron:serve-tsc was a one-time compilation with no watch mode.

Changes:

• Added electron:serve-tsc:watch script to run TypeScript compiler in watch mode with --preserveWatchOutput flag
• Added electron:start script to launch Electron with the --serve flag
• Updated electron:serve script to perform initial compilation, then run TSC watch and Electron in parallel

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.