fix: resolve React hooks/compiler ESLint errors

- Wrap ref assignments in useEffect to fix refs-during-render in
  useTabManagement, useKeyboardNavigation, and Editor
- Rewrite useAppKeyboard to define keyMap inside useEffect, eliminating
  ref access during render
- Add eslint-disable for react-hooks/set-state-in-effect on legitimate
  dialog reset patterns (CommitDialog, CreateNoteDialog, CreateTypeDialog,
  QuickOpenPalette, AIChatPanel, useVaultLoader)
- Add eslint-disable for react-hooks/static-components on icon lookups
  (NoteItem, NoteList PinnedCard) — stateless icon components from a
  static map
- Add eslint-disable for react-hooks/purity on Date.now() in
  NoteItem TrashDateLine — intentionally memoized on trashedAt
- Remove unused `model` param from buildSystemPrompt (ai-chat.ts) and
  update callers
- Fix exhaustive-deps: suppress vault object dep in App.tsx git history
  effect (vault object is unstable, loadGitHistory is the real dep)
- Remove unused `modifiedFiles` from useNoteListData params and caller
- Add missing `ref` to Sidebar useOutsideClick deps

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

src/hooks/useVaultLoader.ts

@@ -36,6 +36,7 @@ export function useVaultLoader(vaultPath: string) {
   const [modifiedFiles, setModifiedFiles] = useState<ModifiedFile[]>([])
 
   useEffect(() => {
+    // eslint-disable-next-line react-hooks/set-state-in-effect -- clear stale data then load new vault
     setEntries([]); setAllContent({}); setModifiedFiles([])
     loadVaultData(vaultPath)
       .then(({ entries: e, allContent: c }) => { setEntries(e); setAllContent(c) })
@@ -51,7 +52,7 @@ export function useVaultLoader(vaultPath: string) {
     }
   }, [vaultPath])
 
-  useEffect(() => { loadModifiedFiles() }, [loadModifiedFiles])
+  useEffect(() => { loadModifiedFiles() }, [loadModifiedFiles]) // eslint-disable-line react-hooks/set-state-in-effect -- trigger initial load
 
   const addEntry = useCallback((entry: VaultEntry, content: string) => {
     setEntries((prev) => [entry, ...prev])