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>

tools/oni_api.py

@@ -931,6 +931,42 @@ def cmd_set_automation(args):
     })
     _print_feedback(result)
 
+# ---------------------------------------------------------------------------
+# Printing Pod
+# ---------------------------------------------------------------------------
+
+def cmd_printing_pod(args):
+    """Check Printing Pod status. Usage: printing_pod"""
+    data = api_get('/api/state/printing_pod')
+    if 'error' in data:
+        print(f"Error: {data['error']}")
+        return
+    if data.get('isReady'):
+        print("=== Printing Pod: READY ===")
+        print(f"  Options available:")
+        for opt in data.get('options', []):
+            print(f"    [{opt.get('index')}] {opt.get('description', '?')} ({opt.get('type', '?')})")
+        print()
+        print("  Select with: python3 tools/oni_api.py printing_pod_select <0|1|2>")
+    else:
+        cycles = data.get('cyclesUntilNext', 0)
+        if cycles > 0:
+            print(f"Printing Pod: not ready ({cycles:.1f} cycles remaining)")
+        else:
+            print("Printing Pod: checking...")
+
+def cmd_printing_pod_select(args):
+    """Select a Printing Pod option. Usage: printing_pod_select <0|1|2>"""
+    if not args:
+        print("Usage: printing_pod_select <0|1|2>")
+        return
+    index = int(args[0])
+    if index < 0 or index > 2:
+        print("Index must be 0, 1, or 2")
+        return
+    result = api_post('/api/action/printing_pod_select', {"index": index})
+    _print_feedback(result)
+
 # ---------------------------------------------------------------------------
 # Screenshot / Camera
 # ---------------------------------------------------------------------------
@@ -1105,6 +1141,8 @@ COMMANDS = {
     'building_detail': cmd_building_detail,
     'set_building_priority': cmd_set_building_priority,
     'set_automation': cmd_set_automation,
+    'printing_pod': cmd_printing_pod,
+    'printing_pod_select': cmd_printing_pod_select,
 }
 
 if __name__ == '__main__':
@@ -1133,9 +1171,10 @@ if __name__ == '__main__':
         print("  gas <x> <y> [r]          Gas analysis in radius r")
         print("  explore <x> <y> <w> <h>  AI-friendly region summary")
         print("")
-        print("=== Event / Queue ===")
+        print("=== Events / Printing Pod ===")
         print("  events [since] [limit]   Poll new game events")
-        print("  queue [batch_id]         View pending task queue")
+        print("  printing_pod             Check Printing Pod status (ready/options)")
+        print("  printing_pod_select <0|1|2>  Select Printing Pod option")
         print("")
         print("=== Registries (AI Reference) ===")
         print("  registry buildings [f]   List all building IDs with metadata")