Prepare the repository for a public release

- docs/deployment.md: step-by-step Docker deployment for anyone (setup,
  configuration, LAN/HTTPS/VPN access, adding manga, operation, prebuilt
  images, backups, peering, troubleshooting, rules for agents).
- deploy/circus.sh: host helper without Node (status, up/down with queue
  pause, logs, pause/resume, update, rescan, restore-test); deploy/compose.https.yml
  + Caddyfile for automatic HTTPS.
- README rewritten for public readers (Docker first, sources/copyright note,
  docs index); AGENTS.md + CLAUDE.md for contributors and coding agents.
- Removed notes about one particular installation (Windows host, handoffs,
  audits of a private library, benchmarks with local paths, wishlist, reading
  map) and the unused ops/proxmox templates; generalized remaining mentions of
  hosts, VPN and Windows-only commands.
- Defaults: TZ and reading time zone UTC; .gitattributes keeps shell/YAML LF.
- Personal agent coordination files are git-ignored (CLAUDE.local.md,
  .claude/skills/manga-org/).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/collections.md

@@ -26,7 +26,7 @@ selection and must use **Validate & save JSON**, not an ordinary collection save
 Metadata imports/research are blocked while drafts exist so they cannot silently
 replace them. Relationship edits save immediately when there is no collection draft.
 
-Creation works on HTTPS, localhost and ordinary HTTP LAN/Tailscale addresses. The
+Creation works on HTTPS, localhost and ordinary HTTP LAN/VPN addresses. The
 browser uses secure random bytes when its secure-context-only `randomUUID` API is
 unavailable. This does not change networking or the server's revision/validation rules.
 
@@ -115,9 +115,9 @@ Provider contract: [AniList relationship connections](https://docs.anilist.co/gu
 
 ## Repeatable functional acceptance
 
-Run `npm.cmd test`, build `docker compose build reader`, then:
+Run `npm test`, build `docker compose build reader`, then:
 
-```powershell
+```bash
 # Playwright is optional developer tooling; not a deployed application dependency.
 # Set NODE_PATH to its installed package root if it is not on normal resolution paths.
 node tools/test-compose.js --collections-ui --settings-ui