v0.2.0 - Always-on services panel with per-service host config

Dashboard:
- New 'Always-on services' section with cards for Parakeet and Magpie
- Each card: host:port, model loaded, status pill (Healthy/Unhealthy/Starting/Not configured)
- Start, Restart, Stop buttons. Buttons disabled when not applicable for current state
- Restart counter shown when > 1 (would have surfaced the old magpie crash loop)

Backend:
- New /api/services GET: docker container state + http health for each support service
- New POST /api/services/{name}/{action} for start | stop | restart
- services.py module: docker_state, run_action via SSH
- config.py: PARAKEET_HOST/USER/CONTAINER and MAGPIE_* env vars, default to spark2_*
- health.py: use per-service hosts (no longer hard-wired to spark2_host)

Package:
- sparkConfig.yaml.ts: add 6 new optional fields
- configureSparks action: optional 'Parakeet host', 'Parakeet container', 'Magpie host', 'Magpie container' fields; descriptions explain they default to Spark 2 when blank
- Handler normalizes nulls to empty strings before merge
- main.ts: pass new env vars to container
- bump to 0.2.0:0

image/app/health.py

@@ -31,15 +31,15 @@ async def check_vllm(settings: Settings) -> dict:
 
 async def check_parakeet(settings: Settings) -> dict:
     base_url = (
-        f"http://{settings.spark2_host}:{settings.parakeet_port}"
-        if settings.spark2_host
+        f"http://{settings.parakeet_host}:{settings.parakeet_port}"
+        if settings.parakeet_host
         else None
     )
-    if not settings.spark2_host:
-        return {"ok": False, "error": "spark2 not configured", "base_url": base_url}
+    if not settings.parakeet_host:
+        return {"ok": False, "error": "parakeet host not configured", "base_url": base_url}
     try:
         async with httpx.AsyncClient(timeout=_TIMEOUT) as c:
-            r = await c.get(f"http://{settings.spark2_host}:{settings.parakeet_port}/health")
+            r = await c.get(f"http://{settings.parakeet_host}:{settings.parakeet_port}/health")
             r.raise_for_status()
             return {"ok": True, "detail": r.json(), "base_url": base_url}
     except Exception as e:
@@ -48,15 +48,15 @@ async def check_parakeet(settings: Settings) -> dict:
 
 async def check_magpie(settings: Settings) -> dict:
     base_url = (
-        f"http://{settings.spark2_host}:{settings.magpie_port}"
-        if settings.spark2_host
+        f"http://{settings.magpie_host}:{settings.magpie_port}"
+        if settings.magpie_host
         else None
     )
-    if not settings.spark2_host:
-        return {"ok": False, "error": "spark2 not configured", "base_url": base_url}
+    if not settings.magpie_host:
+        return {"ok": False, "error": "magpie host not configured", "base_url": base_url}
     try:
         async with httpx.AsyncClient(timeout=_TIMEOUT) as c:
-            r = await c.get(f"http://{settings.spark2_host}:{settings.magpie_port}/v1/health/ready")
+            r = await c.get(f"http://{settings.magpie_host}:{settings.magpie_port}/v1/health/ready")
             r.raise_for_status()
             return {
                 "ok": True,