fix(notifications): use user-friendly title and dedup keys for permission/question notifications

- Change permission notification title from `req.permission || 'Permission requested'`
  to the user-friendly 'Agent needs approval'; permission type + patterns now appear
  in the body (e.g. 'bash: echo hello') for context.
- Add `dedupeKey: `perm-${req.id}`` and `dedupeKey: `question-${req.id}``
  (60 s cooldown) to both events so a SSE reconnect after disconnect() clears state
  can't fire a second notification for the same pending request.
- Fix stale CUA-test comment that claimed 'Agent needs approval' did not exist;
  fallback assertion already matched correct title; update the comment to reflect
  the real events.ts behavior.

Closes #39

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/stores/events.ts

@@ -269,9 +269,18 @@ export const useEvents = create<EventsState>((set, get) => ({
               }))
               notify({
                 category: "permissions",
-                title: req.permission || "Permission requested",
-                body: sanitizeBody(req.patterns?.join(", "), "A tool needs your approval"),
+                title: "Agent needs approval",
+                body: sanitizeBody(
+                  req.permission
+                    ? req.patterns?.length
+                      ? `${req.permission}: ${req.patterns.join(", ")}`
+                      : req.permission
+                    : req.patterns?.join(", "),
+                  "A tool needs your approval",
+                ),
                 sessionId: req.sessionID,
+                dedupeKey: `perm-${req.id}`,
+                dedupeCooldownMs: 60_000,
               })
               break
             }
@@ -305,6 +314,8 @@ export const useEvents = create<EventsState>((set, get) => ({
                 title: req.questions?.[0]?.header || "Input needed",
                 body: sanitizeBody(req.questions?.[0]?.question, "The assistant has a question"),
                 sessionId: req.sessionID,
+                dedupeKey: `question-${req.id}`,
+                dedupeCooldownMs: 60_000,
               })
               break
             }