ombi: reach sonarr, radarr and lidarr through the mesh

ombi keeps its Servarr connections in its own database, so the mesh has no
file to write them into. A run-once step reads the three bindings and pair
credentials and writes host, port, TLS, base path and key into ombi through
ombi's own API - only when they differ, and nothing else ombi keeps.

Until the operator accepts an app's key for this pair the mesh delivers a
value it minted, which no Servarr app accepts. The step tries the key against
the app first and, refused, writes nothing and fails naming the secret accept
that fixes it, so the old working key in ombi is never replaced by a dead one.

Declared last so its failing gates nothing else of ombi (ADR 0136), and
restart-on its six inputs so it runs again when a provider moves (ADR 0099).

modules/ombi/Dockerfile

@@ -13,7 +13,7 @@ ARG RUNTIME_BASE
 FROM ${BUILD_BASE} AS build
 WORKDIR /app/modules/ombi
 COPY . .
-RUN node /app/node_modules/typescript/bin/tsc client.ts index.ts tools/index.ts \
+RUN node /app/node_modules/typescript/bin/tsc client.ts index.ts tools/index.ts servarr/settings.ts servarr/index.ts \
       --module NodeNext --moduleResolution NodeNext --target ES2022 --outDir dist
 
 FROM ${RUNTIME_BASE}
@@ -22,3 +22,6 @@ COPY --from=build /app/modules/ombi/dist /app/modules/ombi/dist
 # provider's provisioner runs its reconcile loop in the same process, with the broker connected —
 # the convention novox/hq issues 060/061 settled.
 ENV MESH_TOOL_MODULES=/app/modules/ombi/dist/index.js,/app/modules/ombi/dist/tools/index.js
+# NOT dist/servarr/index.js: that is a step the host runs to completion, named by the `servarr`
+# container's args as `mesh-tools run …` (novox/hq ADR 0052). Listed here it would run inside the
+# serving sidecar too, and exit it.