chore(brand): Beta labels + fix MemryNote naming in macOS menus

[h4yfans]

What

• Add a Beta indicator on three brand surfaces: macOS About panel, landing header pill, README badge.
• Fix macOS menu bar showing "Memrynote" and the app menu showing "About @memry/desktop": correct productName casing (CFBundleName) and give role: 'about' items explicit localized labels — app.name is @memry/desktop in production and must stay that way (default userData path derives from it).
• Sweep Memrynote → MemryNote casing across app copy, all 30 locales, release artifact names, homebrew cask generator, and landing download fixtures (asset matching is suffix-based, so old release links keep working).
• Keep win.executableName: Memrynote for exe-path stability on existing installs.

[github-actions]

React Doctor found 3 issues in 1 file · 3 errors · score 75 / 100 (Needs work) · vs main

Errors

• ❌ src/components/layout/Header.tsx:301 Animating a layout property no-layout-property-animation
• ❌ src/components/layout/Header.tsx:302 Animating a layout property no-layout-property-animation
• ❌ src/components/layout/Header.tsx:303 Animating a layout property no-layout-property-animation

⚠️ Warning: .github/workflows/react-doctor.yml is configured incorrectly. See below to fix.

React Doctor compares against main to report only the issues this pull request introduces. This run couldn't complete that comparison (usually a shallow CI checkout with no merge base), so it listed every issue in the changed files, including ones that already existed on main.

Add fetch-depth: 0 to the actions/checkout step in .github/workflows/react-doctor.yml so the checkout includes the history React Doctor needs:

 jobs:
   react-doctor:
     steps:
       - uses: actions/checkout@v5
+        with:
+          fetch-depth: 0

       - uses: millionco/react-doctor@v2

To silence this warning, set silence-missing-baseline-warning: true on the React Doctor action.

_{Reviewed by React Doctor for commit f0be624. See inline comments for fixes.}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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