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 …".

client/src/components/onboarding/OnboardingTour.tsx

@@ -171,8 +171,16 @@ export function OnboardingTour() {
       style = { left: right + 16, top };
     } else if (rect.bottom + 180 < window.innerHeight) {
       style = { left, top: rect.bottom + 12 };
+    } else if (rect.top > 200) {
+      style = { left, top: rect.top - 12, transform: "translateY(-100%)" };
     } else {
-      style = { left, top: Math.max(12, rect.top - 12), transform: "translateY(-100%)" };
+      // A target filling the screen (the live session): no room above or
+      // below, so the card sits inside its bottom-right corner.
+      style = {
+        left: Math.min(Math.max(12, rect.right - W - 16), window.innerWidth - W - 12),
+        top: Math.min(rect.bottom, window.innerHeight) - 16,
+        transform: "translateY(-100%)",
+      };
     }
   }