…nChip` type guard to ensure that `input` always has a handler; update docs

…, add coalescing nullish fallback for token chip gloss, extract names prop types for components

…tton

- Replace the `glosses`/`onGlossChange` prop-drilling pattern with a `GlossStoreProvider` context backed by `useSyncExternalStore`, so `TokenChip` reads and writes glosses directly without intermediary props passing through `PhraseBox`, `SegmentView`, `ContinuousView`, and `Interlinearizer`.
- Add a sticky "Scroll to active verse" button (using the `LocateFixed` icon) that imperatively scrolls the `aria-current` segment into view. Rename `chapterSegments` to `bookSegments` throughout.

- Extract `InertTokenChip` / `MemoizedInertTokenChip` for non-word tokens, removing the punctuation branch from `TokenChip` so it only handles words
- Convert `PhraseBox` from a `<button>` to a `<label>` so clicking anywhere on the phrase focuses the first gloss input natively
- Rename prop `onClick` → `onFocusPhrase` on `PhraseBox` to reflect the narrowed trigger (gloss-input focus only, not arbitrary clicks)
- Update `ContinuousView` and `SegmentView` to import `MemoizedInertTokenChip` and pass `onFocusPhrase` instead of `onClick`
- Update all test mocks and assertions to match the new component shapes

- `GlossStore` stored a flat string map keyed by `token.id`. `AnalysisStore`
replaces it with a `TextAnalysis`-backed store: each gloss write creates a
new approved `TokenAnalysis` + `TokenAnalysisLink`, the full analysis snapshot
is accessible via `useAnalysis`, and `onSave` propagates changes to the caller
for persistence. The store also accepts an `analysisLanguage` prop to support
non-English glosses.

- Token identity keys are migrated from token.id to token.ref throughout
(`TokenChip`, `PhraseBox`, `SegmentView`, `ContinuousView`, `Interlinearizer`,
and all corresponding tests).

- Some unneeded tests removed and some adjustments to documents made

…with select/link/edit/delete hooks

- Introduces two new UI components: TokenAnalysisPicker (a portal-based dropdown menu for choosing among multiple analyses per token) and TokenAnalysisModal (a create/edit dialog for individual analyses).
- Introduces four new AnalysisStore hooks: useGlossSelect, useGlossLink, useAnalysisEdit, and useAnalysisDelete.
- Adds useGlossWithStatus and useTokenAnalysisEntries, which surface per-token analysis state needed by the picker.
- The gloss dispatch now demotes the previous approved link to candidate rather than keeping two approved links.
- Full test coverage added for all new components and hooks.