templates/dav: baked stdio image instead of npx

dav-mcp declares tsdav/tsdav-utils as GitHub-URL deps — npx on the
git-less node-runner dies with 'spawn git ENOENT' (observed: dav-michal
CrashLoopBackOff on first deploy). Upstream's ghcr image PID-1s the HTTP
server, so mysources.co.uk/michal/dav-mcp bakes the install and execs
src/server-stdio.js.

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

templates/dav.yaml

@@ -1,10 +1,13 @@
 name: dav
 version: "1.0.0"
 description: CalDAV/CardDAV/VTODO (Stalwart or any RFC 4791/6352 server) — calendars, events, tasks, contacts
-packageName: "dav-mcp"
+# NOT packageName: dav-mcp declares tsdav/tsdav-utils as GitHub-URL deps, so
-runtime: node
+# `npx -y dav-mcp` dies with `spawn git ENOENT` on the git-less node-runner,
+# and the upstream ghcr image starts the HTTP server as PID 1. This image
+# bakes the install and execs the stdio entrypoint (NODE_OPTIONS baked in).
+dockerImage: "mysources.co.uk/michal/dav-mcp:4.0.1-stdio1"
 transport: STDIO
-repositoryUrl: https://github.com/PhilflowIO/dav-mcp
+repositoryUrl: https://mysources.co.uk/michal/dav-mcp-image
 healthCheck:
   # A real CalDAV PROPFIND: a pass proves server URL and credentials.
   tool: list_calendars
@@ -21,7 +24,3 @@ env:
   - 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"