feat(ui): add dynamic RTL layout support

- Sync document.documentElement.dir dynamically from I18nProvider
  based on selected locale (RTL for 'he', LTR for all others)
- Flip MUI Drawer anchor props (left/right) reactively via isRTL()
- Convert ~60 physical CSS directional properties to logical equivalents
  (border-inline-start/end, inset-inline-start/end, margin-inline-*, etc.)
- Add [dir="rtl"] overrides for translateX animations (sidebar slide,
  resize handle hit-area extensions, settings nav selection nudge)
- Preserve intentional direction:rtl + text-align:left truncation tricks
  (file path display in .truncate-start and .files-tab-selected-path)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/ui/src/styles/components/directory-browser.css

@@ -124,7 +124,7 @@
   display: flex;
   align-items: center;
   gap: var(--space-md);
-  text-align: left;
+  text-align: start;
   background: transparent;
   border: none;
   color: var(--text-primary);