fix(644): stop seven SPA list loads truncating silently — one shared pager, bounded media pickers #656

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timothy merged 3 commits from fix/644-spa-paging into main 2026-07-26 22:10:04 +02:00
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Author SHA1 Message Date
timothy daedf003e5 fix(644): round-3 review — split truncated/incomplete picker hints, F2 out-of-list gaps, F3 abort warns, F4 aria wiring, F5 FillerPresetsScreen tests
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review-verdict/h10 Review-verdict: MERGEABLE @ daedf00
Addresses the round-3 cold re-review's five low-severity findings on #644's client-side paging fix:

- F1: `loadPickerOptions` (RerunCollectionsScreen, PlaylistsScreen) returned one `truncated:
  boolean` for two different conditions — a real Class B cap hit vs an unconverged Class A
  `loadAllPages` load — so an incomplete multi-collection load rendered the self-contradictory
  "Showing the first 47 of 47 — use search to narrow." Replaced with a `hint: 'incomplete' | 'none'
  | 'truncated'` discriminator and distinct copy per value; 'incomplete' matches the wording already
  used by the Class A list-load warn Badge.
- F2: mirrored the out-of-list current-selection injection (RerunCollectionsScreen/PlaylistsScreen's
  `selectedInList` prepend) into FillerPresetsScreen and ScheduleItemInspector's rerun-collection
  picker, so an id outside the loaded page still renders as selected instead of misrepresenting the
  stored value as "(none)".
- F3: gated the `console.warn` on an incomplete Class A load with `!signal?.aborted` in the `multi`
  branches (RerunCollectionsScreen, PlaylistsScreen) and SchedulesScreen.loadAllRerunCollections, so
  a superseded/aborted load (Retry, or a type switch mid-load) no longer logs a false warning.
- F4: added `Select`'s `ariaDescribedBy` prop and wired the truncation/incomplete hint span to it via
  `useId()` in RerunCollectionsScreen and PlaylistsScreen, so screen readers announce the hint
  (FillerPresetsScreen already routed it through `Row help=`).
- F5: added FillerPresetsScreen.test.tsx (previously untested) covering the Class B single-request
  guarantee, the truncation hint's totalCount>100/<=100 boundary, and the F2 injection; added the
  two assertions the re-review found missing anywhere in the suite — the Class A `incomplete` warn
  Badge actually rendering, and a screen-level seqRef stale-overwrite race — to
  RerunCollectionsScreen.test.tsx.

Updates docs/spa-conventions.md §3b and the
spa.list-completeness-vs-bounded-pickers decision record to describe the hint discriminator.

Decisions-Edit: yes
2026-07-26 21:29:53 +02:00
timothyandClaude Opus 5 94182cdd53 fix(644): split loadAllPages by list class; bound media-library pickers to one page
Cold adversarial review of fe342a6a found the blanket loadAllPages-everywhere fix
dangerous for the three getLibraryBrowseItems pickers (RerunCollectionsScreen,
PlaylistsScreen, FillerPresetsScreen): paging Episode/Song/Image/Movie/MusicVideo
to completeness can mean ~200 serial requests against a 20k-row library, each more
expensive than the last, to populate a <select> with thousands of <option> nodes.

- Class A (bounded-by-construction lists: rerun collections, multi-collections,
  playlists) keep loadAllPages. Class B (media-library pickers) now fetch ONE
  bounded page and surface truncation via a `Showing the first N of M` hint wired
  to the real totalCount, instead of paging to completeness or truncating silently.
- loadAllPages: reports `{ items, complete }` instead of just `T[]` so a caller
  can no longer mistake a defensive empty-page break for a full list (F4); accepts
  an optional AbortSignal so a superseded loop stops issuing further page requests
  (F2); baseParams is now required via a conditional rest-tuple whenever the
  loader's params type has a field beyond pageNum/pageSize (F6); pushes into the
  accumulator instead of re-spreading it every page (F7).
- MultiCollectionsScreen/RerunCollectionsScreen/SchedulesScreen: add a seqRef +
  AbortController guard around the list/bootstrap loads so a stale loadAllPages
  loop can't resolve after a newer one and resurrect deleted rows (F3); log and
  surface an incomplete load rather than rendering it as whole.
- docs/spa-conventions.md §3b rewritten for the Class A / Class B split; new
  decision record docs/decisions/records/spa/list-completeness-vs-bounded-pickers.md
  (spa.list-completeness-vs-bounded-pickers), catalog regenerated.
- Tests: paging.test.ts covers null/undefined totalCount, null page, a
  short-but-non-empty page, a page-2 rejection, the complete:false flag, and
  cancellation (asserting fetch call COUNT stays put after abort), plus a
  compile-time @ts-expect-error pinning the F6 typing fix. Screen-level tests
  pin a real second HTTP request for a >100-item Class A list
  (MultiCollectionsScreen) and exactly one /library/browse request plus the
  truncation hint for a Class B picker (RerunCollectionsScreen).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-07-26 21:04:55 +02:00
timothy fe342a6a0b fix(644): page SPA list loaders to completeness instead of inflating pageSize
Seven call sites (rerun-collections, multi-collections, library/browse) requested
pageSize far above each endpoint's server-side MaxPageSize=100 clamp and took the
single response page as the whole list, so rows past 100 silently vanished with no
error or truncation indicator.

Extract the loadAllRerunCollections pattern from SchedulesScreen (#634) into a
shared, generic web/src/api/paging.ts::loadAllPages helper that pages against
totalCount with an empty-page defensive break, and refactor SchedulesScreen plus
the seven over-cap call sites in RerunCollectionsScreen, MultiCollectionsScreen,
PlaylistsScreen, and FillerPresetsScreen to use it. Server caps are unchanged
(api.search-allitems-paging precedent: client pages, server stays bounded).

Document the convention in docs/spa-conventions.md §3b.
2026-07-26 20:32:06 +02:00