fix: v2.7.4 — Changes matches JetBrains (#72), the chat says when Claude waits on a trust prompt (#73), Vietnamese Telex in Safari

- Changes (#72): a file git reports `MM` whose working copy equals HEAD again
  (a staged change since undone on disk) is no longer listed — JetBrains'
  GitChangesCollector drops it the same way. Mode-only changes stay listed.
  statusCounts (the dirty-tree safety checks) is unchanged.
- Chat (#73): Claude Code runs no hook before a folder is trusted, so a new
  pane's session has no row; the chat now says the session has not started,
  offers Open terminal, and asks before typing a message or /model //effort
  into the pane (an Enter would pick the trust prompt's "No, exit").
- Terminal: Safari + macOS's own Vietnamese Telex replaces the whole word on
  each key (insertReplacementText), which xterm.js ignores — only each word's
  first letter reached the pane. The edit is now sent as DELs + the new tail.
- Also: Ctrl+V pastes a screenshot into the terminal as a file path; the
  folder browser fallback lists files for a file field (`files=1`); the macOS
  native picker opens in front of the browser; a hidden tab is marked while a
  chat waits or once a turn ended; chat live line shows running calls, turn
  time and tokens, and "Done in …".

server/lib/git-diff.js

@@ -395,13 +395,17 @@ async function summarizeWork(dir) {
   const [entries, numstat] = await Promise.all([
     laneStatus(dir),
     // --relative: cwd-scoped, cwd-relative paths, so they key the status ones.
-    git(dir, ["diff", "--numstat", "-z", "--relative", "HEAD"]).catch(() => ({ stdout: "" })),
+    git(dir, ["diff", "--numstat", "-z", "--relative", "HEAD"]).catch(() => null),
   ]);
-  const stats = parseNumstat(numstat.stdout);
+  const stats = parseNumstat(numstat?.stdout ?? "");
   const files = [];
   for (const { code, path: file } of entries) {
     const untracked = code === "??";
     const stat = stats.get(file);
+    // `MM` with no line against HEAD: a staged change the working tree has
+    // reverted — nothing to commit from the file on disk. JetBrains' Changes
+    // view drops it the same way (#72). Only when the numstat answered.
+    if (code === "MM" && numstat && !stat) continue;
     // One read per untracked file, not two: its line count and its
     // binary-ness are the same buffer answered twice.
     // Sequential on purpose: `normal` folds untracked dirs, so this is short.