docs: fix README — remove phantom script, add missing entries (#35)

## Summary
- Remove `qbm-qbit.sh` section (script doesn't exist in repo)
- Add documentation for 5 undocumented scripts: backup_config.sh,
f2b-dump.sh, omegabrr_upgrade.sh, radarr_dupefinder.sh,
sonarr_dupefinder.sh

docs: add CLAUDE.md

chore: add gitleaks config

feat: add qui-xseed.sh for qui-based cross-seed triggering

Replaces the legacy xseed.sh (removed in v4.0.0) with a qui-native
implementation that triggers data-based cross-seed searches via the
qui API when Radarr or Sonarr completes an import.

Key changes:
- Only ERROR/WARNING written to stderr (starr captures stderr as
  error-level logs, causing noisy notifications for INFO lines)
- Creates dir-scan entry, triggers scan, polls for completion
- Idempotent via ID log file (duplicate download IDs skipped)
- Updated README with full configuration documentation

Release v4.2.0

New Features:
- Add comprehensive pre-commit hooks configuration
- Add GitHub Actions workflow enhancements
  - Bash syntax checking
  - ShellCheck with warning severity

Improvements:
- Fix ShellCheck warnings in dupe.sh
- Fix ShellCheck SC2207 in sonarr_dupefinder.sh
- Make dupefinder scripts executable
- Update jdupes command path to /usr/local/bin/jdupes

Release v4.1.0

New Features:
- Add qbm-api-trigger.sh: qbit_manage Web API trigger script for qBittorrent torrent completion

Delete xseed_qbit_cat_filter.sh

(feat) xseed.sh: Add multiple download client support (#27)

* Add multiple client support

* Add space tolerance and IFS restore

* Update xseed.sh

Co-authored-by: zakary <zak@ary.dev>

* Update xseed.sh

Co-authored-by: zakary <zak@ary.dev>

* Update xseed.sh

Co-authored-by: bakerboy448 <55419169+bakerboy448@users.noreply.github.com>

* Update xseed.sh

Co-authored-by: zakary <zak@ary.dev>

* Update xseed.sh

Co-authored-by: zakary <zak@ary.dev>

* Update xseed.sh

Co-authored-by: zakary <zak@ary.dev>

* Update xseed.sh

* intitial multi-client support variables

* parse and trim for multi-client array conversion

* switch to array types for configuration variables

Co-authored-by: zakary <zak@ary.dev>

Update xseed.sh

Co-authored-by: zakary <zak@ary.dev>

* refactor client validation function and logic

Update xseed.sh

Update xseed.sh

Update xseed.sh

Co-Authored-By: zakary <zak@ary.dev>

* update .env.sample for multi client format instructions

* refactor for env var parsing and config initialization

* bump xseed.sh version to 4.0.0

Co-authored-by: bakerboy448 <55419169+bakerboy448@users.noreply.github.com>

---------

Co-authored-by: zakary <zak@ary.dev>
Co-authored-by: bakerboy448 <55419169+bakerboy448@users.noreply.github.com>

Update README.md

(feat) xseed.sh: add LOGID_FILE to track downloaded ids (#24)

* (feat) xseed.sh: add LOGID_FILE to track downloaded ids

Move from log file to db

* tweak logging; actually use db file

* Update xseed.sh