feat: détection erreurs imprimante via IPP direct (Selphy CP1300)

- script_print.sh : après lp, polling CUPS + sondage IPP direct ipp://IP:631/ipp/print
  Détecte input-tray-missing / media-empty en ~3-6s sans attendre le timeout CUPS
- printer_service.py : ajout _get_printer_ip(), _query_ipp_direct()
  _get_printer_status() utilise IPP pour état/raisons/encre (source de vérité)
- Timeout porté à 120s côté Python, fallback lpstat conservé

Opencode/scripts/script_print.sh

@@ -136,8 +136,26 @@ if [ -z "$JOB_ID" ]; then
     exit 0
 fi
 
+# --- Preparation du sondage IPP direct sur l'imprimante ---
+# La Selphy CP1300 expose un serveur IPP natif (port 631, sans auth).
+# Cela permet de detecter les erreurs physiques en quelques secondes
+# sans attendre un timeout CUPS (qui ne rapporte pas les erreurs papier).
+
+PRINTER_IP=$(lpstat -v "$SELECTED_PRINTER" 2>/dev/null | grep -oE '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+' | head -1)
+IPP_URI=""
+IPP_TEST="/usr/share/cups/ipptool/get-printer-attributes.test"
+if [ -n "$PRINTER_IP" ] && command -v ipptool &>/dev/null && [ -f "$IPP_TEST" ]; then
+    IPP_URI="ipp://${PRINTER_IP}:631/ipp/print"
+    log_info "Sondage IPP direct actif: $IPP_URI"
+else
+    log_info "Sondage IPP desactive (IP=${PRINTER_IP:-inconnu}, ipptool=$(command -v ipptool || echo absent))"
+fi
+
+# Mots-cles d'erreur dans printer-state-reasons
+IPP_ERROR_REASONS="input-tray-missing|media-empty|media-needed|marker-supply-empty|cover-open|door-open|offline-report"
+
 # --- Suivi du job CUPS (attend la completion physique) ---
-MAX_WAIT=90      # secondes max (Selphy CP1300 ~ 60s)
+MAX_WAIT=90      # secondes max (Selphy CP1300 imprime en ~47s)
 POLL_INTERVAL=3
 elapsed=0
 
@@ -147,7 +165,7 @@ while [ $elapsed -lt $MAX_WAIT ]; do
     sleep $POLL_INTERVAL
     elapsed=$((elapsed + POLL_INTERVAL))
 
-    # Succes : job dans la liste des jobs termines
+    # 1. Succes : job dans la liste des jobs termines par CUPS
     if lpstat -W completed 2>/dev/null | grep -q "^${JOB_ID} "; then
         log_info "Job $JOB_ID termine avec succes (${elapsed}s)"
         echo "PRINTED:${SELECTED_PRINTER}:${copies}"
@@ -155,13 +173,27 @@ while [ $elapsed -lt $MAX_WAIT ]; do
         exit 0
     fi
 
-    # Erreur : imprimante stoppee (papier absent, capot ouvert, etc.)
+    # 2. Sondage IPP direct (detecte papier absent, capot ouvert, etc. en ~3s)
+    if [ -n "$IPP_URI" ]; then
+        ipp_reasons=$(ipptool -tv "$IPP_URI" "$IPP_TEST" 2>/dev/null \
+                     | grep "printer-state-reasons" | head -1)
+        if echo "$ipp_reasons" | grep -qiE "$IPP_ERROR_REASONS"; then
+            reason=$(echo "$ipp_reasons" | grep -oiE "$IPP_ERROR_REASONS" | head -1)
+            log_error "Erreur imprimante detectee via IPP: $reason (${elapsed}s)"
+            cancel "$JOB_ID" 2>/dev/null || true
+            echo "PRINT_ERROR:${SELECTED_PRINTER}:${reason}"
+            [ -f "$filename_print" ] && rm -f "$filename_print" 2>/dev/null
+            exit 1
+        fi
+    fi
+
+    # 3. Fallback CUPS : imprimante stoppee cote CUPS
     printer_state=$(lpstat -p "$SELECTED_PRINTER" 2>/dev/null || true)
     if echo "$printer_state" | grep -qiE "stopped|disabled"; then
         reason=$(lpstat -l -p "$SELECTED_PRINTER" 2>/dev/null \
                  | grep -i "Reason:" | head -1 \
                  | sed 's/.*Reason:[[:space:]]*//' | xargs)
-        log_error "Imprimante $SELECTED_PRINTER en erreur: ${reason:-stopped} (apres ${elapsed}s)"
+        log_error "Imprimante $SELECTED_PRINTER stoppee (CUPS): ${reason:-stopped} (${elapsed}s)"
         cancel "$JOB_ID" 2>/dev/null || true
         echo "PRINT_ERROR:${SELECTED_PRINTER}:${reason:-stopped}"
         [ -f "$filename_print" ] && rm -f "$filename_print" 2>/dev/null