[DEV-72] Show the current app version in the pm-desktop window title

[danii1]

Task: DEV-72

Summary: Show the current app version in the pm-desktop window title

Implementation Details

Implemented DEV-72.

• Window title now displays DevIntern PM v<running version> using Electron’s authoritative app.getVersion().
• Prevents renderer page-title updates from removing the version after navigation or reload.
• Falls back safely to DevIntern PM if version information is missing or invalid.
• Added formatting and fallback tests in about.test.ts.
• Updated window creation in window.ts.

Verification:

• 475 pm-desktop tests passed.
• Formatting passed.
• Lint passed with existing unrelated warnings.
• Production build and TypeScript checks passed.
• Documentation update wasn’t necessary for this self-evident window-chrome change.

---

This PR was automatically created by @devintern/code