docs: refresh management panel screenshots

fix: enable control panel by default

chore: remove stale env example

fix: restore ghcr as default compose deployment

fix: default to local panel builds and disable panel by default

fix: make build metadata consistent across deploy and docker

feat: add channel filter to request logs

test: refresh api key cache updates access manager

fix: apply api key channel restrictions immediately

fix: preserve oauth labels in watcher state

fix: reflect renamed oauth channels in logs

feat: add channel restrictions for api keys

fix: correctly set BUILD_DATE in CI workflows

fix: correct ldflags path for buildinfo package

feat: add version header middleware to expose backend version