diff --git a/calibration/calibration_labels.json b/calibration/calibration_labels.json
index e95250b..f3f83a7 100644
--- a/calibration/calibration_labels.json
+++ b/calibration/calibration_labels.json
@@ -78,5 +78,45 @@
     "path": "calibration/frames/20260420_185702_gray.png",
     "expected": "gray",
     "note": "idle gray dot in poll; rgb=(128,128,128)"
+  },
+  {
+    "path": "calibration/frames/20260421_164210_gray.png",
+    "expected": "gray",
+    "note": "2026-04-21 16:42 poll — gray între sesiuni; rgb=(128,128,128)"
+  },
+  {
+    "path": "calibration/frames/20260421_164452_gray.png",
+    "expected": "gray",
+    "note": "2026-04-21 16:44 poll — gray idle; rgb=(128,128,128)"
+  },
+  {
+    "path": "calibration/frames/20260421_165209_gray.png",
+    "expected": "gray",
+    "note": "2026-04-21 16:52 poll — gray idle; rgb=(128,128,128)"
+  },
+  {
+    "path": "calibration/frames/20260421_170045_dark_green.png",
+    "expected": "dark_green",
+    "note": "2026-04-21 17:00 BUY prime catchup (synth arm+prime); rgb=(0,128,0)"
+  },
+  {
+    "path": "calibration/frames/20260421_174502_yellow.png",
+    "expected": "yellow",
+    "note": "2026-04-21 17:45 opposite_rearm PRIMED_BUY→ARMED_SELL — frame bug regresiv; rgb=(253,253,0)"
+  },
+  {
+    "path": "calibration/frames/20260421_174804_gray.png",
+    "expected": "gray",
+    "note": "2026-04-21 17:48 gray persist în ARMED_SELL; rgb=(128,128,128)"
+  },
+  {
+    "path": "calibration/frames/20260421_220346_dark_red.png",
+    "expected": "dark_red",
+    "note": "2026-04-21 22:03 SELL prime seara; rgb=(128,0,0)"
+  },
+  {
+    "path": "calibration/frames/20260421_222108_gray.png",
+    "expected": "gray",
+    "note": "2026-04-21 22:21 gray idle; rgb=(128,128,128)"
   }
 ]
diff --git a/calibration/scenarios.json b/calibration/scenarios.json
index 5882d96..6970304 100644
--- a/calibration/scenarios.json
+++ b/calibration/scenarios.json
@@ -244,5 +244,95 @@
         "expected_scheduler_running": false
       }
     ]
+  },
+  {
+    "id": "buy_catchup_opposite_rearm_to_sell",
+    "description": "REGRESSION 2026-04-21: real trace — catchup pe dark_green la 17:00 → PRIMED_BUY (synth arm+prime), apoi yellow la 17:45 → ARMED_SELL via opposite_rearm. Înainte de fix, bug-ul era dispatch-ul tăcut pentru opposite_rearm (zero alert). Acum trebuie să emită kind=opposite_rearm și să oprească scheduler-ul.",
+    "steps": [
+      {
+        "frame": "calibration/frames/20260421_170045_dark_green.png",
+        "expected_color": "dark_green",
+        "expected_reason": "prime",
+        "expected_state": "PRIMED_BUY",
+        "expected_trigger": null,
+        "expected_new_alerts": ["arm", "prime"],
+        "expected_scheduler_running": true
+      },
+      {
+        "frame": "calibration/frames/20260421_174502_yellow.png",
+        "expected_color": "yellow",
+        "expected_reason": "opposite_rearm",
+        "expected_state": "ARMED_SELL",
+        "expected_trigger": null,
+        "expected_new_alerts": ["opposite_rearm"],
+        "expected_scheduler_running": false
+      }
+    ]
+  },
+  {
+    "id": "buy_armed_gray_persist",
+    "description": "Gray între arm și prime nu pierde ARMED_BUY (reason=persist, scheduler inactiv).",
+    "steps": [
+      {
+        "frame": "calibration/frames/20260420_200002_turquoise.png",
+        "expected_color": "turquoise",
+        "expected_reason": "arm",
+        "expected_state": "ARMED_BUY",
+        "expected_trigger": null,
+        "expected_new_alerts": ["arm"],
+        "expected_scheduler_running": false
+      },
+      {
+        "frame": "calibration/frames/20260421_164210_gray.png",
+        "expected_color": "gray",
+        "expected_reason": "persist",
+        "expected_state": "ARMED_BUY",
+        "expected_trigger": null,
+        "expected_new_alerts": [],
+        "expected_scheduler_running": false
+      },
+      {
+        "frame": "calibration/frames/20260420_185102_dark_green.png",
+        "expected_color": "dark_green",
+        "expected_reason": "prime",
+        "expected_state": "PRIMED_BUY",
+        "expected_trigger": null,
+        "expected_new_alerts": ["prime"],
+        "expected_scheduler_running": true
+      }
+    ]
+  },
+  {
+    "id": "buy_primed_gray_cooldown",
+    "description": "Gray după prime ucide ciclul (reason=cooled, IDLE, scheduler oprit). Design M2D: setup expiră dacă chart-ul tace după priming.",
+    "steps": [
+      {
+        "frame": "calibration/frames/20260420_200002_turquoise.png",
+        "expected_color": "turquoise",
+        "expected_reason": "arm",
+        "expected_state": "ARMED_BUY",
+        "expected_trigger": null,
+        "expected_new_alerts": ["arm"],
+        "expected_scheduler_running": false
+      },
+      {
+        "frame": "calibration/frames/20260420_185102_dark_green.png",
+        "expected_color": "dark_green",
+        "expected_reason": "prime",
+        "expected_state": "PRIMED_BUY",
+        "expected_trigger": null,
+        "expected_new_alerts": ["prime"],
+        "expected_scheduler_running": true
+      },
+      {
+        "frame": "calibration/frames/20260421_174804_gray.png",
+        "expected_color": "gray",
+        "expected_reason": "cooled",
+        "expected_state": "IDLE",
+        "expected_trigger": null,
+        "expected_new_alerts": [],
+        "expected_scheduler_running": false
+      }
+    ]
   }
 ]