Citadel v0.5.0

Automated custom release.

Includes updater metadata (latest.json) for Tauri updater clients.

What's Changed

• chore(release): bump version to v0.4.3 by @phildenhoff in #100
• refactor: extract libcalibre crate by @phildenhoff in #101
• [codex] Migrate frontend linting to Biome by @phildenhoff in #106
• [codex] Add book tag support by @phildenhoff in #105
• Split Web & Tauri platform controls in UI by @phildenhoff in #104
• feat: smart shelves — saved searches in the sidebar (CDL-9) by @phildenhoff in #107
• Keyboard-first library navigation (CDL-8) by @phildenhoff in #108
• Hardcover metadata lookup in the Add Book import flow by @phildenhoff in #109
• feat: series browsing and editing (CDL-10) by @phildenhoff in #110
• feat: generic custom column support (CDL-1) by @phildenhoff in #111
• feat(libcalibre): SQL-backed book search (CDL-3) by @phildenhoff in #112
• feat: paged, sorted, filtered book queries by @phildenhoff in #114
• perf: virtualize the library book grid by @phildenhoff in #113
• chore(release): bump version to v0.5.0 by @phildenhoff in #115
• fix(release): open version bump PR after the build by @phildenhoff in #116
• feat: backend-paged library browsing by @phildenhoff in #117

Full Changelog: v0.4.3...v0.5.0