[everpcpc]

What

• Add notable entity metadata to books and series aggregates, including editing in Book and Oneshot metadata sheets.
• Display grouped Characters, Teams, Locations, and future custom-kind chips on detail pages.
• Add exact kind-and-name filters to book/series browse, v3 referential loading, offline projection matching, and smart-list round trips.
• Decode the v3 flat page envelope separately from the existing Spring page model.

Why

Komga 1.29's notable entities were not represented in KMReader's metadata or browse models, so the new server data could not be displayed, edited, or used for filtering.

Validation

• make format
• make build — iOS, macOS, and tvOS passed.
• make localize and misc/translate.py list — no missing translations.
• Inspected synced metadata on the test instance: books and series carry empty notable-entity arrays, which correctly produce no chips.
• The current test library has no nonempty entity fixtures, and the simulator's menu actions did not open the editor/filter sheets. Metadata edits, nonempty chip navigation, and online/offline entity filtering were not exercised end to end; no real book metadata was modified.

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