Restructure: promote working_copy to repo root

Make the stable 'working copy' bot the canonical code at the repository
root so the install/deploy scripts operate against it again.

- Move working_copy/* to root (bot entrypoint is bot.py)
- Restore root-level install/ops scripts from c4fa88e (deploy.sh,
  install_main_bot.sh, status_report.*, conjurer.service, etc.)
- Fix deploy.sh: copy bot.py (was thin_client.py) and add the
  conanjurer_* modules; bump command count
- Remove side-by-side variant dirs (backup_old_docker, prototype_one,
  prototype_musician_one, musician_old, working_copy) and docker cruft
- Keep components as subdirs: conjurer_librarian, conjurer_musician,
  spotify_dl, yt_dlp, fonts, utils, docs

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.dockerignore

@@ -1,32 +0,0 @@
-# Python
-__pycache__
-*.py[cod]
-*.pyo
-*.pyd
-*.so
-
-# VCS/CI
-.git
-.gitignore
-.gitattributes
-.github
-
-# Editor
-.vscode
-.idea
-
-# Python tooling
-.pytest_cache
-.mypy_cache
-.ruff_cache
-.tox
-dist
-build
-*.egg-info
-
-# Local assets
-logs
-music
-data
-*.env
-*.env.*