refactor(display): extract tile layout logic to library helper class

mise.toml

@@ -27,14 +27,27 @@ arduino-cli compile --fqbn "$FQBN" --libraries ./libraries $LIBS --build-propert
 
 [tasks.upload]
 description = "Upload (uses BOARD env var)"
+depends = ["compile"]
 run = """
+# Kill any processes using the serial port first
 source ./boards/$BOARD/board-config.sh
+PORT="${PORT:-$PORT}"
+fuser -k "$PORT" 2>/dev/null || true
+for pid in $(pgrep -f "monitor-agent.py" 2>/dev/null || true); do
+    kill "$pid" 2>/dev/null || true
+done
+rm -f "/tmp/doorbell-${BOARD}.lock" 2>/dev/null || true
+sleep 1
+
 source ./scripts/lockfile.sh
+
 FORCE=1 TASK_NAME=upload acquire_lock || exit 1
 
-PORT="${PORT:-$PORT}"
-arduino-cli compile --fqbn "$FQBN" --libraries ./libraries $LIBS --build-property "compiler.cpp.extra_flags=$OPTS" --warnings default ./boards/$BOARD && \
 arduino-cli upload --fqbn "$FQBN" --port "$PORT" ./boards/$BOARD
+
+# Restart monitor in background
+python3 ./scripts/monitor-agent.py "$BOARD" &
+echo "[OK] Monitor restarted in background"
 """
 
 [tasks.monitor-raw]
@@ -62,10 +75,25 @@ tio --map INLCRNL "$TARGET" -e
 
 [tasks.kill]
 description = "Kill running monitor/upload for BOARD"
-run = """
-source ./scripts/lockfile.sh
-kill_locked
-"""
+run = '''
+set +e
+# Kill any processes using the serial port
+source ./boards/$BOARD/board-config.sh
+PORT="${PORT:-$PORT}"
+fuser -k "$PORT" 2>/dev/null
+
+# Kill monitor-agent processes for this board
+for pid in $(pgrep -f "monitor-agent.py"); do
+    kill "$pid" 2>/dev/null
+done
+
+# Also clean up lockfile
+rm -f "/tmp/doorbell-${BOARD}.lock" 2>/dev/null
+
+sleep 1
+echo "[OK] Killed processes for $BOARD"
+exit 0
+'''
 
 [tasks.monitor]
 description = "Monitor agent with JSON log + command pipe (Python-based)"