feat: ship v0.9.0 with pomodoro, achievements, and injection history

Add pomodoro timer with goal notifications, writing streak milestones, and knowledge injection logging with UI previews across AI writing flows.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/renderer/styles/layout.css

@@ -909,6 +909,108 @@
   font-weight: 600;
 }
 
+.pomodoro-control {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  margin-right: 4px;
+}
+
+.pomodoro-btn {
+  background: transparent;
+  border: 1px solid var(--border);
+  border-radius: 4px;
+  color: var(--text-secondary);
+  cursor: pointer;
+  font-size: 11px;
+  line-height: 1;
+  padding: 2px 6px;
+}
+
+.pomodoro-btn:hover:not(:disabled) {
+  border-color: var(--accent);
+  color: var(--accent-light);
+}
+
+.pomodoro-btn:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}
+
+.pomodoro-time {
+  font-variant-numeric: tabular-nums;
+  min-width: 42px;
+  text-align: center;
+}
+
+.cockpit-achievements-section {
+  margin-top: 12px;
+}
+
+.cockpit-achievements {
+  display: flex;
+  gap: 10px;
+  flex-wrap: wrap;
+}
+
+.cockpit-achievement-badge {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  padding: 6px 10px;
+  border-radius: 8px;
+  font-size: 13px;
+  border: 1px solid var(--border);
+}
+
+.cockpit-achievement-badge.unlocked {
+  background: var(--bg-tertiary);
+  opacity: 1;
+}
+
+.cockpit-achievement-badge.locked {
+  opacity: 0.35;
+  filter: grayscale(1);
+}
+
+.cockpit-pomodoro-today {
+  margin-top: 12px;
+  font-size: 13px;
+  color: var(--text-secondary);
+}
+
+.kb-injection-preview,
+.knowledge-injection-history {
+  margin-top: 8px;
+  font-size: 11px;
+  color: var(--text-muted);
+}
+
+.kb-injection-label {
+  font-weight: 600;
+  margin-bottom: 4px;
+  color: var(--text-secondary);
+}
+
+.kb-injection-preview-row,
+.kb-injection-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+  align-items: center;
+  margin-top: 2px;
+}
+
+.kb-injection-chapter-link {
+  background: none;
+  border: none;
+  color: var(--accent-light);
+  cursor: pointer;
+  font-size: inherit;
+  padding: 0;
+  text-decoration: underline;
+}
+
 .kb-confidence-badge {
   margin-left: 8px;
   font-size: 11px;