feat: integrate API lifecycle with teardown and update dependencies

decnet/deployer.py

@@ -131,6 +131,27 @@ def deploy(config: DecnetConfig, dry_run: bool = False, no_cache: bool = False)
     _print_status(config)
 
 
+def _kill_api() -> None:
+    """Find and kill any running DECNET API (uvicorn) processes."""
+    import psutil
+    import signal
+    import os
+
+    _killed: bool = False
+    for _proc in psutil.process_iter(['pid', 'name', 'cmdline']):
+        try:
+            _cmd = _proc.info['cmdline']
+            if _cmd and "uvicorn" in _cmd and "decnet.web.api:app" in _cmd:
+                console.print(f"[yellow]Stopping DECNET API (PID {_proc.info['pid']})...[/]")
+                os.kill(_proc.info['pid'], signal.SIGTERM)
+                _killed = True
+        except (psutil.NoSuchProcess, psutil.AccessDenied):
+            continue
+    
+    if _killed:
+        console.print("[green]API stopped.[/]")
+
+
 def teardown(decky_id: str | None = None) -> None:
     state = load_state()
     if state is None:
@@ -159,6 +180,10 @@ def teardown(decky_id: str | None = None) -> None:
             teardown_host_macvlan(decky_range)
         remove_macvlan_network(client)
         clear_state()
+        
+        # Kill API when doing full teardown
+        _kill_api()
+        
         net_driver = "IPvlan" if config.ipvlan else "MACVLAN"
         console.print(f"[green]All deckies torn down. {net_driver} network removed.[/]")