feat(main): confirm quit while on air

[Roboroads]

Closes #58.

Closing the window while an encoder is streaming now shows a native "You are on air — quit anyway?" confirm dialog (default = Cancel). Quitting while off air stays instant. Adds isAnyEncoderStreaming() to the encoder manager with unit tests.

Summary by CodeRabbit

• New Features

  • Added a safety prompt when closing the app while a stream is active.
  • Users can now choose to quit anyway or cancel and keep the app open.

• Bug Fixes

  • Improved close behavior so active streaming sessions are less likely to be interrupted accidentally.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 74d9a342-cce8-4fe5-b30b-c4bb5397ac8c

📥 Commits

Reviewing files that changed from the base of the PR and between 627cd40 and 18d356e.

📒 Files selected for processing (3)

• packages/streamline/src/encoders/manager.spec.ts
• packages/streamline/src/encoders/manager.ts
• packages/streamline/src/main.ts

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📝 Walkthrough

Walkthrough

Added an exported isAnyEncoderStreaming() function to the encoder manager that checks if any active encoder process has a streaming status. Wired this helper into main.ts via a mainWindow close handler that shows a confirmation dialog before quitting while streaming. Added corresponding unit tests.

Changes

Confirm quit while on air

Layer / File(s)	Summary
Streaming status helper and tests packages/streamline/src/encoders/manager.ts, packages/streamline/src/encoders/manager.spec.ts	Adds isAnyEncoderStreaming() which scans the processes map for a streaming status, and adds tests for no-encoder, streaming, and non-streaming cases.
Window close confirmation dialog packages/streamline/src/main.ts	Adds a mainWindow close handler that prevents default close, checks isAnyEncoderStreaming(), shows a synchronous confirmation dialog, and destroys the window only if the user chooses to quit.

Estimated code review effort: 2 (Simple) | ~10 minutes

Related issues: Closes #58 (confirm quit while at least one encoder is streaming, with instant quit when off air).

Suggested reviewers: N/A

_{🐰 A quiet click to close the tray,
but if we're live, we pause and say —
"Still on air, are you sure?"
Quit or cancel, the choice is yours,
then off we hop, the stream secure.}

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Linked Issues check	⚠️ Warning	The close-confirm flow matches the behavior, but the dialog text differs from the required “You are on air — quit anyway?” copy.	Update the confirmation dialog message to exactly “You are on air — quit anyway?” and keep off-air closes immediate.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title is concise and clearly describes the main change: confirming quit while the app is on air.
Out of Scope Changes check	✅ Passed	The changes stay focused on quit confirmation, encoder streaming detection, and tests, with no unrelated additions.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[Roboroads]

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