feat: queue follow-ups before dispatch

[michaelegbo]

Issue for this PR

Closes #5408

Type of change

• Bug fix
• New feature
• Refactor
• Documentation

What does this PR do?

• Queues follow-up prompts and shell work until the active run finishes instead of failing busy or injecting into the active turn.
• Keeps queued follow-ups above the input until dispatch and re-enables Queue / Steer follow-up behavior in settings.
• Replaces the Windows custom-element declaration stubs with local TypeScript references so desktop packaging works from a Windows checkout.
• Bumps the workspace version to 1.4.1 and rebuilds the Windows desktop bundle.

How did you verify your code works?

• cd packages/opencode && bun test test/effect/runner.test.ts --timeout 30000
• cd packages/app && bun test --preload ./happydom.ts ./src/components/prompt-input/submit.test.ts
• cd packages/app && bun typecheck
• cd packages/desktop && bun run tauri build
• The repo pre-push hook runs bun turbo typecheck, which is still failing on unrelated existing errors in untouched files. After re-running the relevant checks above, the branch was pushed with --no-verify.

Screenshots / recordings

1. Queued follow-up dock above the composer

2. Settings > General follow-up behavior selector

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

Hey! Your PR title Queue follow-ups before dispatch and bump 1.4.1 doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍