The code cited its plan instead of saying why: `E28 review J4`, `(R6 S3b)`, `S1 justified…`,
`deep-review round 5`. That plan lives in the private ops repo, so for every reader of this one the
citation was noise, and a sentence whose subject was the plan step ("round 2 showed…") hid its
lesson behind an id. Each one is gone and the "why" kept: a bare citation is deleted, a sentence
carrying a lesson is reworded around it ("a later attempt showed…").
Measured (`scripts/audit_metrics.py`, product code): 652 lines in 270 files carried an epic code by
the definition the next commit holds (507 / 241 by the old, two-digit-only one) -> 0. Across all
code, tests, scripts and configs: ~1100 epic-code lines plus ~320 sprint/round ids.
Behaviour unchanged, checked mechanically: every changed .py file has the same AST once docstrings
are blanked; css/sh/toml/yml/json files are identical once comments are stripped; the only
non-comment changes in TS/JS are test titles, one description string in a contract table, and five
ESLint messages, whose text is all the gates snapshot diff holds. Not touched: Markdown (docs and
the changelog keep their history), Alembic migrations, TV episode notation (`S2 · E5`), DESIGN.md
ids (`C1`, `B4`, `S3h`), tracker ids (`SEC-16`, `DX-17`).
One stale claim fixed on the way: test_hls_reaper's docstring said the player checkpoints "every
10 s whether or not it is playing", which plex/stream.py calls wrong; it now says what the code does.
prefers-reduced-motion hard-disabled the rotation whatever the toggle said,
and Windows reports it whenever its animation effects are off — so the
owner never saw the crossfade. Untouched, the setting now follows the
system (and the toggle shows that state); a pick made on the toggle is
stored and wins on every device.
The 43 react-refresh/only-export-components warnings the gate let through meant an edit to a
provider (or AnchoredPopover, Toaster, plexDetailUi, …) could not be hot-swapped: Fast Refresh
reloads a module that also exports hooks or helpers.
- Each provider's contexts, the types its hooks return and the hooks themselves live in a sibling
context module (navigationContext.ts, channelsContext.ts, …); the provider file keeps the
component. loadAccountFilters moved next to the feed filters' defaults (feedFiltersInit.ts),
following navigationInit/playlistsInit.
- Helpers that sat in component files have their own modules: welcomeMode, downloadTitle,
plexPlayable, channelSync, ui/anchoredPopoverHooks, ui/pageToolbarSlot, ui/pagerContent,
ui/toastLevels, ui/overlayOrder, ui/tableAlign, lib/plexDetail; the cells of the channel columns
and the registry's page wrappers are components files of their own (channelCells, modulePages).
- usePersistedTab, an alias of useAccountPersistedState, is gone; its callers use the original.
npm run lint is now eslint --max-warnings 0, so a warning fails the gate like an error does.
The faint HTPC art backdrop now slowly cross-dissolves through a pool of images
instead of showing one static art — the last E5 sprint.
- useCrossfadeBackdrop (replaces useArtBackdrop): a double buffer — the SETTLED
image lives on #root's background (the proven full-viewport layer); the next
image cross-fades in on a z-index:-1 overlay layer, then is committed and the
overlay reset. ⭐ #root is given `isolation: isolate` so it's a stacking context
— without it the z:-1 overlay paints BEHIND #root's own background and is
invisible (found + fixed live: a red test layer + a real TMDB backdrop both
only showed once #root was isolated).
- Art pool: the item's own art + its TMDB backdrops (E5 S2, rendered straight
from the TMDB CDN — the CSP allows it) + its collection siblings' art; the show
page adds related art; the PERSON page cross-dissolves through the person's
films' art (the roadmap's signature touch).
- HARD-OFF under prefers-reduced-motion (static, no overlay) + a new usePref
"Crossfade backdrop" toggle in the detail customize menu (fade 1.6s / 7s cycle).
Wired into PlexInfo, PlexShowView, PlexSeasonView, PlexPersonView. Tests:
plexBackdrop.dom.test.tsx (5: paint+isolate+overlay, reduced-motion off, single
image, animate=false, disable/unmount cleanup). Browser-E2E'd (isolation +
overlay render + a real backdrop crossfade + the toggle). Gate: vitest 347,
backend lane 403 (unchanged — FE only).
▶ E5 · Plex Experience epic COMPLETE (S1–S8).
peter