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- worker: _creds_from_account(conn, account_id) — fallback la accounts.rar_creds_enc cand submission n-are creds (canal web fara re-pusher, restart worker) - run(): creds = _creds_for(claimed, settings) OR _creds_from_account(conn, account_id) - gate purjare (Voce#5): comentariu explicit — sterge DOAR submissions.rar_creds_enc, NU accounts.rar_creds_enc (inofensiv pt canal web, neatins pt canal API) - POST /v1/conturi/rar-creds: seteaza creds durabile criptate Fernet per cont - DELETE /v1/conturi/rar-creds: revenire la modelul efemer Treapta 1 - 7 teste: fallback, restart, coada mixta, endpoint set/delete, gate purjare Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>