Initial commit — DRB client (edge node) stack

Includes edge-node (FastAPI/MQTT/Discord voice), op25-container (SDR decoder),
and icecast (audio streaming).

drb-edge-node/app/internal/op25_client.py

@@ -0,0 +1,63 @@
+import httpx
+from typing import Optional, Dict, Any
+from app.config import settings
+from app.internal.logger import logger
+
+
+class OP25Client:
+    def __init__(self):
+        self.api_url = settings.op25_api_url
+        self.terminal_url = settings.op25_terminal_url
+
+    async def start(self) -> bool:
+        try:
+            async with httpx.AsyncClient(timeout=10) as client:
+                r = await client.post(f"{self.api_url}/op25/start")
+                r.raise_for_status()
+                return True
+        except Exception as e:
+            logger.error(f"OP25 start failed: {e}")
+            return False
+
+    async def stop(self) -> bool:
+        try:
+            async with httpx.AsyncClient(timeout=10) as client:
+                r = await client.post(f"{self.api_url}/op25/stop")
+                r.raise_for_status()
+                return True
+        except Exception as e:
+            logger.error(f"OP25 stop failed: {e}")
+            return False
+
+    async def status(self) -> Optional[Dict[str, Any]]:
+        try:
+            async with httpx.AsyncClient(timeout=5) as client:
+                r = await client.get(f"{self.api_url}/op25/status")
+                r.raise_for_status()
+                return r.json()
+        except Exception as e:
+            logger.error(f"OP25 status failed: {e}")
+            return None
+
+    async def generate_config(self, config: Dict[str, Any]) -> bool:
+        try:
+            async with httpx.AsyncClient(timeout=10) as client:
+                r = await client.post(f"{self.api_url}/op25/generate-config", json=config)
+                r.raise_for_status()
+                return True
+        except Exception as e:
+            logger.error(f"OP25 generate-config failed: {e}")
+            return False
+
+    async def get_terminal_status(self) -> Optional[Any]:
+        """Poll the OP25 HTTP terminal for current call metadata."""
+        try:
+            async with httpx.AsyncClient(timeout=3) as client:
+                r = await client.get(f"{self.terminal_url}/0/status.json")
+                r.raise_for_status()
+                return r.json()
+        except Exception:
+            return None
+
+
+op25_client = OP25Client()