Give each settings-config runtime a mergeable config file with its own id
(runtime-config) — the previous "config" collided with modules that already own a
config directory, so ten runtimes mounted a config file no resource declared. Point
each runtime's restart-on at it, so a settings change recreates the runtime and it
re-reads the new value (needs the mesh-host container restart-on fix on
issue/009-container-restart-on). Proven: runtime-restart-on-config e2e green.
Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF
jschoubben
550393b847