Add a settings page (/settings) and API (/api/settings GET/PUT) to edit
encoding profiles (crf/preset per media type), lp, OMDb key, log retention,
and delete-originals from the browser, persisted to a settings table in
logs.db. config.yaml seeds the store on first run; afterwards the DB is the
source of truth (paths.* and http_addr stay config-only). Each job snapshots
the current settings, so changes apply to the next encode with no restart.
PUT validates ranges (crf 0-63, preset 0-13, lp >=0, retention >=1) before
persisting. No auth, by design for now (isolated network) — see #2.
Closes#1
Esa Kataja
8fc00c96b9