templates: jmap, dav, karakeep, ttrss for personal-service projects

jmap and ttrss are custom images (mysources.co.uk/michal/{jmap-mcp,ttrss-mcp});
dav-mcp and @karakeep/mcp run on the node runner. Health checks are real
backend calls. Applied live 2026-09-30; these seeds keep the next mcpd
image rebuild from reverting them.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

templates/dav.yaml

@@ -0,0 +1,27 @@
+name: dav
+version: "1.0.0"
+description: CalDAV/CardDAV/VTODO (Stalwart or any RFC 4791/6352 server) — calendars, events, tasks, contacts
+packageName: "dav-mcp"
+runtime: node
+transport: STDIO
+repositoryUrl: https://github.com/PhilflowIO/dav-mcp
+healthCheck:
+  # A real CalDAV PROPFIND: a pass proves server URL and credentials.
+  tool: list_calendars
+  arguments: {}
+  intervalSeconds: 60
+  timeoutSeconds: 10
+env:
+  - name: CALDAV_SERVER_URL
+    description: DAV base URL (e.g. http://stalwart.stalwart.svc.cluster.local:8080)
+    required: true
+  - name: CALDAV_USERNAME
+    description: DAV username
+    required: true
+  - name: CALDAV_PASSWORD
+    description: DAV password (use an app password)
+    required: true
+  - name: NODE_OPTIONS
+    description: V8 heap cap; Node sizes its heap off host RAM, not the cgroup limit
+    required: false
+    defaultValue: "--max-old-space-size=384"