docs: add the seven pages Home.md already links to Home.md links to seven reference pages that did not yet exist — clicking them rendered GitHub's default "create this page?" stub. Fill them in: - Delay-profiles.md — CRUD surface today; scoring layer on the roadmap (#93) - Custom-formats.md — same story (#94); condition schema documented so users can define formats now and have them take effect when the scoring wire-up lands - Notifications.md — generic-webhook model (no built-in Slack/Discord/ntfy adapters); recipes per provider; SSRF policy escape hatch - Reverse-proxy-and-SSO.md — Traefik/Caddy/nginx snippets; ForwardAuth + Authelia/Authentik patterns; how OPDS + scripts bypass SSO cleanly - OPDS.md — endpoint map, auth precedence (api key / session / basic), KOReader/Moon+/Aldiko setup - Calibre-integration.md — the three modes (off / calibredb / drop-folder) with a decision tree and the real per-mode setting keys - Indexer-and-downloader-recipes.md — Newznab/Torznab pattern, SABnzbd + qBittorrent setup, path-remapping, category IDs (7020 / 3030) Every page reflects actual code paths (verified against internal/api, internal/notifier, internal/calibre) rather than Sonarr-style boilerplate. Features that have CRUD APIs but no enforcement layer yet are explicitly flagged as such, with roadmap links.