diff --git a/CLAUDE.md b/CLAUDE.md
index a57cb81..489c4c3 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -19,12 +19,12 @@ pytest tests/test_scenarios_regression.py -v    # FSM pe imagini reale
 
 ## Calibration corpus
 
-`calibration/` — persistent, auto-suficient, safe to keep când `samples/` și `logs/fires/` se golesc. Conține:
-- `frames/` — PNG-uri `{ts}_{color}.png` (ground truth în nume)
-- `calibration_labels.json` — gate offline pentru `atm validate-calibration`
+`calibration/` — persistent, auto-suficient. Conține:
+- `frames/` — PNG-uri raw `{ts}_{color}.png` scrise **automat** de live loop la fiecare schimbare de culoare (filename = culoarea detectată, poate fi greșită)
+- `calibration_labels.json` — ground truth **manual** (gate offline pentru `atm validate-calibration`)
 - `scenarios.json` — secvențe FSM pentru `tests/test_scenarios_regression.py`
 
-Când adaugi un frame: copiezi din `logs/fires/` → redenumești `{ts}_{color}.png` → adaugi entry în JSON. Validare după orice recalibrare.
+Workflow după sesiune: review frame-urile noi din `frames/`, adaugi entry-uri în `calibration_labels.json` cu culoarea pe care ai văzut-o TU pe chart (nu neapărat cea din filename), rulezi `atm validate-calibration`.
 
 ## Telegram commands (live)
 
diff --git a/calibration/frames/20260421_164210_gray.png b/calibration/frames/20260421_164210_gray.png
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diff --git a/calibration/frames/20260421_220346_dark_red.png b/calibration/frames/20260421_220346_dark_red.png
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diff --git a/calibration/frames/20260421_222108_gray.png b/calibration/frames/20260421_222108_gray.png
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diff --git a/src/atm/main.py b/src/atm/main.py
index 6e84be1..e32eb27 100644
--- a/src/atm/main.py
+++ b/src/atm/main.py
@@ -1382,8 +1382,12 @@ async def run_live_async(cfg, duration_s=None, capture_stub: bool = False) -> No
 
     start = time.monotonic()
     heartbeat_due = time.monotonic() + cfg.heartbeat_min * 60
-    samples_dir = Path("samples")
-    samples_dir.mkdir(exist_ok=True)
+    # Dump raw frames direct în corpusul de calibrare — fără pas manual
+    # de copy-paste din samples/. calibration_labels.json rămâne manual
+    # (filename-ul folosește culoarea detectată, care poate fi greșită;
+    # curarea labels.json e ce face validate-calibration truthful).
+    samples_dir = Path("calibration") / "frames"
+    samples_dir.mkdir(parents=True, exist_ok=True)
     fires_dir = Path("logs") / "fires"
     fires_dir.mkdir(parents=True, exist_ok=True)
     try:
@@ -1496,7 +1500,7 @@ def _build_capture(cfg, capture_stub: bool = False):
 
     if use_stub:
         import itertools
-        samples_dir = Path("samples")
+        samples_dir = Path("calibration") / "frames"
         pngs = sorted(samples_dir.glob("*.png")) if samples_dir.exists() else []
         _cycle = itertools.cycle(pngs) if pngs else None