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/static/index.html

@@ -63,7 +63,15 @@
       </details>
     </section>
 
-    <section id="cards" class="cards"></section>
+    <section id="services-panel" class="services hidden">
+      <h2 class="section-title">Always-on services</h2>
+      <div id="services-grid" class="services-grid"></div>
+    </section>
+
+    <section id="models-section">
+      <h2 class="section-title">LLM swap</h2>
+      <section id="cards" class="cards"></section>
+    </section>
 
     <footer class="footer">
       <div class="health">