feat: printing pod API + research completion events

Printing Pod:
- GET /api/state/printing_pod: check if ready, options available, cycles remaining
- POST /api/action/printing_pod_select {index}: select option 0/1/2

Research completion tracking:
- Automatic detection of newly completed techs on each state poll
- Events pushed to stream: 'research_complete' with unlocked buildings list
- Events pushed when Printing Pod becomes ready

Event daemon enhanced:
- Classifies 'research complete' events with actionable next steps
- Classifies 'printing pod' events with option viewing instructions

CLI: printing_pod, printing_pod_select <0|1|2>

scripts/event_daemon.py

@@ -126,6 +126,10 @@ def classify_event(e):
         return 'warning'
     if any(w in combined for w in ['duplicant', 'stress', 'break']):
         return 'warning'
+    if any(w in combined for w in ['research complete', 'research completed']):
+        return 'info_research'
+    if any(w in combined for w in ['printing pod']):
+        return 'info_printing_pod'
 
     return 'info'
 
@@ -198,6 +202,20 @@ def poll_loop(event_history):
                     elif cls == 'warning':
                         print(format_event_for_ai(e))
                         print()
+                    elif cls == 'info_research':
+                        # Research completed — show with unlocks
+                        print("=" * 40)
+                        print(format_event_for_ai(e))
+                        print("  -> Check what's new: python3 tools/oni_api.py buildable")
+                        print("=" * 40)
+                        print()
+                    elif cls == 'info_printing_pod':
+                        # Printing pod ready
+                        print("=" * 40)
+                        print(format_event_for_ai(e))
+                        print("  -> View options: python3 tools/oni_api.py printing_pod")
+                        print("=" * 40)
+                        print()
                     else:
                         # Only print non-info events or batch feedback
                         cat = e.get('category', '')