add systemd services and handlers pipeline

obd2_client/config.json.example

@@ -0,0 +1,60 @@
+{
+  "_comment": "Carpibord OBD2 Client Configuration",
+
+  "can": {
+    "interface": "can0",
+    "bitrate": 500000,
+    "virtual": false
+  },
+
+  "obd2": {
+    "request_id": "0x7DF",
+    "response_id": "0x7E8",
+    "timeout": 0.2
+  },
+
+  "scan": {
+    "retries": 5,
+    "retry_delay": 1.5,
+    "initial_delay": 1.0
+  },
+
+  "polling": {
+    "interval_fast": 0.1,
+    "interval_slow": 1.0,
+    "fast_pids": ["0x0C", "0x0D", "0x11", "0x04"],
+    "slow_pids": ["0x05", "0x5C", "0x0F", "0x2F", "0x10"]
+  },
+
+  "storage": {
+    "_comment": "Offline-first SQLite storage",
+    "enabled": true,
+    "db_path": null,
+    "wal_mode": true,
+    "retention_days": 30,
+    "batch_size": 50,
+    "flush_interval": 1.0
+  },
+
+  "postgresql": {
+    "_comment": "Remote PostgreSQL sync (offline-first)",
+    "enabled": false,
+    "host": "your-postgres-server.com",
+    "port": 5432,
+    "database": "carpibord",
+    "user": "carpibord",
+    "password": "your-secure-password",
+    "sync_interval": 30.0,
+    "batch_size": 500,
+    "max_retries": 3,
+    "retry_delay": 5.0
+  },
+
+  "flipper": {
+    "_comment": "Flipper Zero UART display",
+    "enabled": true,
+    "port": "/dev/serial0",
+    "baudrate": 115200,
+    "show_ups": true
+  }
+}