feat: Add logo_animation toggle

[pjotrvdh]

Issue for this PR

Closes #22528

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

This PR adds a new TUI config option: logo_animation in tui.json.

• When logo_animation: false, logo animations are disabled globally (home logo + Go upsell logo), including interactive burst and sound effects.
• When omitted or set to true, current behavior stays the same.
• The setting is wired in the same style as other TUI toggles (like mouse): config is resolved at usage sites, not inside the logo component.
• Legacy migration from opencode.json now also supports tui.logo_animation.
• Docs are updated with an example and option description in the TUI config section.

Why this works:

• The toggle is part of the validated TUI schema, so config parsing is consistent with existing options.
• Animation control is passed explicitly to logo components, which keeps behavior predictable and avoids hidden config coupling.
• Migration support ensures existing users can carry over the setting from legacy config.
• Config tests cover loading from tui.json and legacy migration behavior.

If you paste a large clearly AI generated description here your PR may be IGNORED or CLOSED!

How did you verify your code works?

• Added config tests for:
  • loading logo_animation from tui.json
  • migrating tui.logo_animation from legacy opencode.json
• Manually verified behavior:
  • logo_animation: false -> static logos, no burst/sound
  • logo_animation: true (or unset) -> existing animation behavior

Checklist

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

[github-actions]

Hey! Your PR title Add logo_animation toggle 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]

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