feat(fairies): add reset chat button to FairyHUD header (tldraw#7224)

Adds a reset button to the FairyHUD header that allows users to reset
the chat conversation with a fairy.

The reset button appears in the header when:
- The panel is showing fairy chat
- A fairy is currently shown
- Only one or no fairies are selected

The button uses the existing `reset()` method on the fairy agent and
displays a counter-clockwise rotate icon.

### Change type

- [x] `improvement`

### Test plan

1. Open a fairy chat
2. Have a conversation with the fairy
3. Click the reset button in the header
4. Verify the chat is reset and starts fresh

- [ ] Unit tests
- [ ] End to end tests

### Release notes

- Added a reset button to the fairy chat header to quickly restart
conversations

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Migrates fairy HUD/menus to Tldraw UI dropdowns with a new Manage
submenu and accessibility tweaks, updates i18n strings and releases doc
to v4.2.0, adds a lint-staged wrapper, and refines related styles.
> 
> - **UI (fairies)**:
> - Replace Radix dropdowns with `TldrawUiDropdownMenu*` in `FairyHUD`,
`FairyDropdownContent`, `FairyTaskListDropdownContent` and sync open
state via `editor.menus`.
> - Restructure `FairyMenuContent` with a `Manage` submenu; disable
reset when no history; keep group disband flow.
> - Improve accessibility of sidebar plus control (div with role/button
+ keyboard handlers) in `FairySidebarButton`.
> - Adjust `FairyDebugDialog` structure (remove wrapper) and use Tldraw
UI for view selection.
> - **Styles**:
> - Tweak chat input/history padding and header spacing; set dialog body
sizing; adjust z-index and `--tl-layer-canvas-in-front`.
> - **i18n**:
> - Update labels/messages (e.g., `Visit`, `Speak to {name}…`, `Manage`,
`Summon all`, `Sleep all`, `Clear all`, `Hard reset`, `Fairy's name`);
remove unused strings; sync compiled locales.
> - **Docs**:
> - Update releases page to current `[v4.2.0]` with notes and move prior
versions to "Previous releases".
> - **Tooling**:
> - Add `internal/scripts/lint-staged.ts` wrapper for clearer
lint-staged error reporting.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
8bbb78b. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

Author: steveruizok

.claude/commands/pr.md

@@ -70,6 +70,7 @@ Tips:
 
 - Place the PR description at the top of the file, above the Change type heading
 - In Change type, you may delete any items that are not ticked
+- Make sure you tick ([-]) the Change type
 - If your changes cannot be manually tested, you may remove that ordered list
 - Tick Unit tests if tests are present, otherwise leave it unticked
 - Tick End to end tests if e2e tests are present, otherwise leave it unticked