Add first-class ebook request support and UI

Implements first-class ebook requests with their own type, parent-child relationship to audiobook requests, and separate status flow. Updates database schema and migrations to support 'type' and 'parentRequestId' fields on requests. Adds processors and job types for ebook search and direct HTTP download from Anna's Archive, with FlareSolverr integration for Cloudflare bypass. Enhances admin UI tables and request actions to display and manage ebook requests, including orange badge and source links. Updates documentation to reflect new ebook support, configuration, and behavior.

documentation/TABLEOFCONTENTS.md

@@ -38,10 +38,12 @@
 - **Database caching, real-time matching** → [integrations/audible.md](integrations/audible.md)
 - **Book covers API for login page** → [frontend/pages/login.md](frontend/pages/login.md)
 
-## E-book Sidecar
-- **Optional e-book downloads from Anna's Archive** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
+## E-book Support (First-Class)
+- **First-class ebook requests, separate tracking** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
 - **ASIN-based matching, format selection** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
-- **Non-blocking, atomic failures** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
+- **Ebook ranking algorithm (inverted size scoring)** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
+- **Direct HTTP downloads from Anna's Archive** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
+- **Ebook delete behavior (files only)** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
 
 ## Automation Pipeline
 - **Full pipeline overview** → [phase3/README.md](phase3/README.md)
@@ -108,8 +110,10 @@
 **"How do Usenet/NZB downloads work?"** → [phase3/sabnzbd.md](phase3/sabnzbd.md), [backend/services/jobs.md](backend/services/jobs.md)
 **"Can I use both qBittorrent and SABnzbd?"** → [phase3/download-clients.md](phase3/download-clients.md)
 **"How does Plex matching work?"** → [integrations/plex.md](integrations/plex.md)
-**"How does e-book sidecar work?"** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
+**"How does e-book support work?"** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md)
 **"How do I enable e-book downloads?"** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md), [settings-pages.md](settings-pages.md)
+**"What happens when I delete an ebook request?"** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md#delete-behavior)
+**"Why do ebook requests have an orange badge?"** → [integrations/ebook-sidecar.md](integrations/ebook-sidecar.md#ui-representation)
 **"How do scheduled jobs work?"** → [backend/services/scheduler.md](backend/services/scheduler.md)
 **"How do I configure external services?"** → [setup-wizard.md](setup-wizard.md), [settings-pages.md](settings-pages.md)
 **"What's the database schema?"** → [backend/database.md](backend/database.md)