Adds app/ingest/qbittorrent.py — auto-detected by the pipeline on the
(YYYY/MM/DD HH:MM:SS) timestamp fingerprint. Handles both slash and dash
date separators, optional [Warning|Critical] bracket levels, and
multi-line continuations (Qt stack traces).
patterns/default.yaml: 8 new qbit_ patterns covering tracker errors,
port bind failures, disk errors, hash check failures, peer bans, download
completion, ratio limits, and session errors.
manage.sh: ingest-qbit [HOST] command mirrors ingest-plex — probes known
default log paths locally or via SSH, ingests, restarts server.
14 tests covering format detection, severity mapping, multiline handling,
and timestamp normalization.
