Commit Graph
7 Commits
Author SHA1 Message Date
PercyandPercy b8bba7653e feat(courses): add folder grouping (#1005)
* feat(courses): add folder grouping behind a feature flag

Group courses into user-created folders on the home page. Folders are
device-local organization metadata kept in the existing IndexedDB
database (new folders + course-to-folder mapping tables, Dexie v16);
the course document aggregate owned by the DocumentStore is untouched.

- Create / rename (inline) / delete folders (keep or remove members)
- Move a course between folders via a hover menu
- Navigate into a folder with a breadcrumb back to all courses
- Search flattens the list, annotating each course with its folder
- Deleting a course cleans up its folder membership
- All UI strings internationalized across 9 locales
- Gated behind NEXT_PUBLIC_ENABLE_COURSE_FOLDERS (default OFF)

* test(courses): update db mocks and version assertion for folder tables

The folder feature adds the `stageFolders` table to the deletion cascade
and bumps the Dexie schema to v16. Update the affected test db mocks to
include the new table and bump the version assertion accordingly.

* fix(courses): stop course click-through when selecting from the move menu

The move-to-folder menu is rendered inside the course card's clickable
container. Selecting a folder item could let the click event reach the
card's onClick (opening the course) because only the trigger button
stopped propagation. Stop propagation on pointerdown for the trigger
and on click for every menu item so selecting a destination never opens
the course.

* fix(courses): open a dialog for the move-menu new-folder entry

The move-to-folder menu's inline "new folder" input never worked: a Radix
DropdownMenu is modal, so a raw <input> inside it cannot keep focus —
Radix closes the menu the instant the input is focused, dropping the
field before anything can be typed. Move the new-folder entry out of the
menu: it now asks the caller to open the existing NewFolderDialog and,
on confirm, moves the requesting course into the freshly created folder.

* feat(courses): drag-to-file folders and stacked cover thumbnails

Per review feedback, make folders feel complete:

- Drag a course card onto a folder tile to file it there. The tile turns
  into a clear drop target (ring + overlay) while a drag is over it. The
  hover 📂 menu remains as the accessible fallback for keyboard/touch.
- Replace the placeholder folder icon with a stable stack of up to three
  member course covers (most recently updated frontmost). Empty folders
  keep the folder icon; the name and course count are always visible.

* feat(courses): refine folder cover stack to a tidy fanned layout

Tune the folder-tile cover stack per review: front cover centered and
upright, rear covers peek out from alternating sides with a slight tilt
and reduced opacity, soft shadow and hairline ring. Reads as a neat pile
of course covers rather than an exaggerated fan.

* fix(courses): address review — dialog mount, empty-list, rename validation, partial-delete refresh, breadcrumb dedup

Per review (wyuc, CHANGES_REQUESTED):

1. Mount NewFolderDialog/DeleteFolderDialog outside the collapsible Recent
   subtree so they are reachable while it is collapsed; the New-folder
   button now expands the section before opening the dialog.
2. Keep the Recent/folder surface alive when the course list is empty so
   folders remain reachable and a first folder can be created.
3. Enforce folder-name validation (width + uniqueness) on rename as well
   as create, at the storage boundary (FolderNameError) and in the UI.
4. Refresh authoritative state on folder-delete both success and failure,
   so a partial "remove" failure does not leave stale cards/counts.
5. Drop the duplicated folder breadcrumb from the top section header;
   keep a single navigation breadcrumb in the content area.

Add focused storage tests covering rename validation, membership writes,
both deletion modes, and partial-failure propagation.

* fix(courses): address 2nd review — folder-view layout, drop highlight, validation parity, a11y, i18n

Per review (wyuc, CHANGES_REQUESTED on 9f77686f):

P1 — folder view layout: opening a folder compacts the hero and surfaces
the library content; the centered header shows a single path
"Recent > Folder name"; the empty-folder state sits directly below it;
clicking Recent returns to the root grid. The duplicate content
breadcrumb is dropped (kept only for search).

P2 — correctness & a11y:
- Clear the folder drop highlight on every drag exit (dragenter counter)
  and gate it on the text/stage-id payload.
- Duplicate-name check in the dialog is now case-insensitive, matching
  the storage boundary; FolderNameError is mapped to specific messages.
- Renames report the actual submitted width, not a hardcoded 0.
- createFolder/renameFolder run read-check-write in one read-write
  transaction so the uniqueness invariant cannot race across tabs.
- The move-menu trigger is focus-visible and pointer-coarse reachable
  (visible on touch / keyboard), not hover-only.

Extra:
- Empty library (no courses, no folders) shows a dedicated hint instead
  of the search-empty string.
- Translate all newly added folder strings across ja/ko/pt/ru/ar, fix
  Simplified-Chinese text in zh-TW, and add the emptyLibraryHint key.

* fix(courses): address 3rd review — ungate folders, fix empty-library hero, stabilize the bar

Per review (wyuc, CHANGES_REQUESTED on 19729038):

P1 — ship folders unconditionally: remove NEXT_PUBLIC_ENABLE_COURSE_FOLDERS,
the isCourseFoldersEnabled helper, the .env.example entry, and every
flag-on/flag-off UI branch. Folder metadata is always loaded; create,
move, drag, and folder navigation are always available. The IndexedDB
v16 schema stays intact.

P1 — full-screen landing hero only when the library is truly empty: the
hero uses min-h-[calc(100dvh-8rem)] only when there are zero courses AND
zero folders. A `hydrated` flag waits for both async loads before
selecting the layout, so folders arriving from storage do not flip the
hero from full-screen to compact.

P2 — geometrically stable centered bar: the Recent bar gets a fixed
height (h-9) so entering/leaving a folder (which toggles the New-folder
action and the folder path) does not shift the search/import controls.

* fix(courses): single stable library action bar across root, folder, and empty states

Per review (wyuc, CHANGES_REQUESTED on 860a1170):

P2 — remove the duplicate floating import controls. The hero section
rendered a second Import Classroom / PPTX cluster whenever the course
list was empty, duplicating the Recent bar's actions and floating above
it as the hero switched layout modes. Import now lives only in the
Recent action bar.

P1 — keep folder creation reachable for a truly empty library. The
Recent section is now always rendered after hydration (not gated on
having courses or folders), so a new user with zero of each can still
create the first folder or import. The empty-library hint renders below
the single stable action bar.

Invariant: one library action bar across root, folder, and empty
states; state changes alter the path and enabled actions only.

* chore: trigger CI after ready-for-review

* fix(courses): inherit folder context when importing from inside a folder

Per review (wyuc, CHANGES_REQUESTED on 37be4716):

[P1] Courses imported from inside a folder were silently placed at the
root. The import contract now carries the new stageId to the success
callback; the page captures the active folder when the file picker opens
(not when the async import resolves) and files the imported course into
that folder before the list refresh, so the card appears immediately and
the folder count increments. Root imports remain ungrouped. A failed
folder assignment surfaces an explicit error toast instead of silently
falling back.

* fix(courses): stable hero on folder delete, lightweight delete menu, breadcrumb count, empty-name validation

Per review (wyuc, CHANGES_REQUESTED on 5e12984f) + QA findings:

P1 — deleting the last folder must not expand the hero. The full-screen
landing hero is a first-visit treatment only: a session-scoped
"librarySeen" flag latches true once the library bar renders, so the
hero stays compact across all subsequent create/delete transitions.

P2 — replace the heavy two-card delete dialog with progressive disclosure.
Empty folder: an inline confirmation overlay on the card tile (matching
the course-delete pattern), with the empty-folder copy. Non-empty
folder: a compact dropdown beside the delete icon — "Delete folder only"
(courses move to unfiled) executes directly; "Delete folder and N
courses" opens a lightweight destructive confirmation. The full modal is
gone.

QA fixes:
- Breadcrumb count is now contextual (total at root, in-folder count
  inside a folder) instead of always showing the global total.
- Renaming a folder to empty/whitespace shows a "name cannot be empty"
  error and shakes, instead of silently exiting edit mode.

* fix(courses): cross-review cleanup — dead i18n keys, missing translations, delete-overlay reset

Post-commit cross-review (leak audit PASS, wyuc 19/19 PASS) found:

- Remove 6 dead i18n keys left over from the removed two-card delete
  dialog (deleteFolderDesc, deleteFolderUngroupTitle, etc.) across all
  9 locales.
- Translate all remaining English folder strings in ja/ko/pt/ru/ar
  (newFolderTitle, folderNameLabel, folderCreate, deleteFolderTitle,
  etc.).
- Fix zh-TW: convert ~17 simplified-Chinese folder strings to
  Traditional (新增資料夾/建立/刪除/etc.).
- Delete the orphaned "feature flag" comment (flag was removed earlier).
- Close the inline delete-confirm overlay before the async delete, so a
  failure leaves the card interactive instead of stuck behind the
  backdrop.

* fix(courses): clear drop highlight on drag end, map limit error in dialog

Two minor findings from cross-review:

- Escape-cancelled drags may not fire dragleave on every folder target,
  leaving a highlight ring. The course card now dispatches a
  'course-drag-end' window event on dragEnd (fires for both normal drop
  and Escape cancel); folder cards listen and clear their drop state.
- FolderNameError kind 'limit' (thrown at the storage boundary when
  FOLDER_COUNT_LIMIT is reached in a cross-tab race) now maps to the
  specific folderCountLimit message in the dialog instead of falling
  through to a generic hint.

Also fixes an SSR hydration mismatch: librarySeen is now initialized
to false and read from sessionStorage in useEffect (not in the
useState initializer).

* fix(courses): atomic folder removal, always-compact hero, no-cover placeholder

Per review (wyuc, CHANGES_REQUESTED on 470f5fea):

P2 — close the orphan-membership race in 'remove' mode. deleteFolder now
captures members, deletes the folder row, and clears all memberships in
ONE transaction BEFORE the course-deletion cascade. The folder is gone
from the moment the cascade starts, so a concurrent setStageFolder
(which checks existence in its own transaction) rejects the assignment.

P2 — remove the first-visit full-screen hero. The librarySeen flag
caused a visible layout jump on refresh (SSR renders full-screen, then
the effect reads sessionStorage and switches to compact). The hero is
now always compact (mt-[10vh]); no sessionStorage, no hydration
mismatch, no geometry regression.

P3 — distinct no-cover fallback for non-empty folders. A folder with
courses but no cached thumbnails now shows a neutral stacked-card
placeholder instead of the empty-folder icon.

Merged with latest main; no conflicts.

---------

Co-authored-by: Percy <percy@PercydeMacBook-Pro.local>
2026-08-10 17:56:56 +08:00
ceb05adb41 feat(media): allocate generated assets through the registry (#1007 part 2, step b) (#1039)
* feat(media): establish shared asset ownership primitives

Introduce global browser asset-pool ownership, asset-reference collection, stage reclamation planning, and lease-based URL access. Carry allocated media identity through storage and generation boundaries with regression coverage.

* fix(media): enforce safe resolution across every consumer

Route image, video, thumbnail, presentation, and video-export consumers through one resolution state machine. Prevent opaque allocated or generated references from reaching render and export sinks, with fallback and ownership tests.

* fix(media): protect document-owned assets across mutations

Allocate pool bytes before compatibility writes and document commits, then roll back uncommitted generations safely. Preserve document ownership across edits, retries, imports, speech generation, scene changes, and stage deletion.

* fix(media): scope retries and tighten ownership guard

Scope retries to the target scene and slide and refuse ambiguous shared-reference mutations. Expand retry rendering coverage and keep direct pool URL resolution behind the shared lease owner.

* fix(storage): avoid nested lock during stage cleanup

Execute prepared reclamation plans against an explicitly deleted document so the compatibility cascade cannot re-enter the per-document lock. Cover deletion of stage-owned media rows even when the document has no references.

* refactor(media): confine reclamation to stage deletion

Remove inline pool and compatibility-row cleanup from element, speech, scene, and audio replacement flows. Keep whole-stage reclamation behind explicit stage ownership, preserve stage-less legacy audio rows, and document deferred document-truth sweeping.

* fix(media): close retry and resolution gaps

Restore shared source tasks after successful forks, scope retries across both whiteboard locations, and wait for parallel TTS workers before rollback. Resolve background media through import, rendering, and PPTX export paths while keeping retry controls visible over last-good bytes.

* test(media): execute the consumer safety matrix

Replace source-substring checks with resolver seam execution across all six UI consumers, stage hydration, and both exporters. Pin each rollback layer independently and harden the ownership guard against aliased pool imports.

* chore(packages): publish the additive DSL field

Bump the DSL patch version for the optional speech-action field. Keep the transitional reclamation policy app-owned and document the legitimate transaction rollback removals there.

* fix(media): make retry rollback task-safe

Delay allocation task re-keying until final document reconciliation succeeds, restore shared source tasks on failed forks, and require exact stage-whiteboard targets before falling through from a missed scene.

* fix(media): clear private assets and refresh leases

Delete the asset-pool database during the confirmed local-data wipe. Notify the app lease layer after same-id replacement so mounted consumers re-resolve current bytes without reaching into storage internals.

* test(media): pin closure safety guards

Exercise the CSS allocation boundary, unfiltered legacy-row ownership, delete-and-undo byte survival, and real distinct consumer seams. Restore the video-only manifest overwrite condition and share the direct video resolution hook across both element variants.

* test(media): narrow rollback element assertion

Narrow the reconciled slide element to an image before checking its source so the rollback regression remains type-safe under the full root compiler configuration.

* fix(media): close lease refresh races

Gate the first batch publication by unique resolved refs, then publish every replacement snapshot without mutating the prior React state object. Serialize invalidation behind pending releases, evict rejected refreshes, and register replacement observation at the pool boundary.

* fix(media): reopen pool after clear failures

Always evict the singleton once its store has been closed, including blocked and failed database deletion paths. Report blocked deletion as deferred and prove a later write uses a fresh live store.

* fix(media): isolate shared retry progress

Track forked regeneration under the selected element until it receives a fresh asset identity, leaving the shared source task and bytes untouched. Surface targeted failures through renderer task lookup and skip the redundant fork reconciliation lock.

* fix(media): close final asset retry gaps

Keep blocked asset clears fail-loud until a successful retry, with actionable settings guidance.

Clear failed shared-fork state across durable and live key spaces, and pin renderer lookups, lease publication identity, and committed-ref rollback protection.

* fix: preserve actionable retry failures

Localize the blocked cache-clear recovery hint across every supported locale and pin the deferred-error mapping.

Retain durable fork failure rows while retries run, deleting them only after successful generation so unstructured failures survive reload.

* fix(media): hydrate legacy stored video thumbnails

Home-page recent-video thumbnails regressed for legacy Dexie mediaFiles
rows keyed by gen_vid placeholders: the reworked hydration resolved the
row's bytes through the sealed resolver but never surfaced the stored
blob (and its poster) as object URLs for the preview card, so the CI
recent-video-thumbnail e2e specs found no visible element.

Hydration now materializes legacy stored video rows into blob URLs for
both the element src and poster while keeping the resolver invariants:
opaque refs still never reach a DOM src, and concrete addresses are
never blanked. Unit pins cover the seam so the vitest suite catches this
class without a browser.

* fix(media): resolve sole restored legacy video

Classroom playback restored tasks by exact document media references. Legacy gen_vid references can outlive the key used by the one persisted video row, leaving the player on a placeholder even though bytes were restored.

Select the sole completed stage video only for legacy sequential refs after exact and reconciled matches. Keep exact failures authoritative, refuse ambiguous candidates, and cover success, ambiguity, and failure precedence in unit tests.

* fix(media): scope legacy video recovery

Decide restored legacy video recovery once from the complete document and record it through the shared task lookup consumed by playback, editing, and resolved slides.

Keep ambiguous documents as placeholders, apply the same decision to thumbnail hydration, and preserve exact failure precedence.

* fix(media): exclude claimed video recovery tasks

Model restored legacy recovery as a two-pass match across document video elements and task rows. Remove tasks claimed by exact, targeted, or placeholder lookup before applying the sole-candidate fallback, and cover the ownership/cardinality matrix.

* fix(media): unify video element resolution

Centralize source, task, poster, and legacy recovery decisions for every video consumer. Ensure direct URLs win over opaque refs and play_video waits on element-targeted retry tasks.

* refactor(media): route legacy recovery through resolver

Let document-aware consumers request legacy video recovery through the unified element binding API, keeping thumbnail hydration on a single decision path.

* fix(media): preserve import refs and prefer pool bytes

Recognize unambiguous extensionless relative media addresses during classroom import. Resolve allocated export and thumbnail assets from the shared pool before falling back to lagging compatibility rows.

* fix(export): preserve concrete video sources

Route PPTX video elements through the shared media binding resolver so an unresolved opaque reference cannot replace a playable source. Complete browser and persisted-store cleanup when asset-pool deletion is deferred, while retaining distinct hard-failure behavior.

* fix(media): fork retries without exclusive ownership

Enumerate logical asset owners across every persisted document before allowing global pool replacement. Thread explicit targets through fresh-id rewrites and cover cross-document aliases plus unreadable ownership.

* fix(media): guard global asset reclamation

Share a fail-closed persisted-document liveness check between stage deletion and retry replacement. Preserve cross-document pool aliases while deleting stage-owned compatibility rows and cover enumeration failures.

* fix(media): cover complete slide asset references

Route slide media traversal through a shared mutable slot contract so backgrounds participate in export, thumbnail hydration, collection, and rewrite lifecycles. Snapshot complete surviving-document refs once per reclamation and preserve manifest-only owners while retaining fail-closed behavior.

* fix(media): preserve exclusive retry asset ids

Allow targeted retries to replace exclusively owned pool assets in place. Keep shared and unprovable ownership paths on fresh allocations, and pin production-shaped retries plus compatibility-row cleanup.

* fix(media): revalidate asset bindings at completion

Recheck repository-wide ownership before replacing generated media and fork scoped retries when exclusivity changed. Route video export selection through the unified resolver and keep concrete posters independent of task state.

* fix(media): count unflushed owners and broadcast replacements

The completion-time exclusivity proof read only the persisted document, but
slide duplication updates the Zustand aggregate synchronously and schedules
persistence behind a debounce. A retry finishing inside that window saw a
single persisted owner and replaced the bytes behind a reference the
duplicate also held. The proof now also counts owners in the live stage
snapshot when that snapshot represents the stage being retried, so an
unflushed duplicate forks instead.

Same-id replacement notifications were realm-local, so a second tab showing
the same classroom kept its lease pinned to the superseded blob URL. The
notification now travels over a BroadcastChannel; each receiving realm runs
its own observers against its own pool, so a spoofed message can at most
force a re-resolve. A missing or failing channel never fails the replacement.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(media): bind replacement listeners and spare shared audio rows

A realm that only renders never sends a replacement, so binding the channel
from the sender path left passive tabs deaf to peers. Binding now happens
where the observer is registered, when the asset-pool module loads, and the
receiving realm resolves its own pool lazily so a cleared or unavailable
pool degrades to the next resolve instead of throwing.

Observer notifications ran under Promise.all, so a rejection surfaced after
BrowserAssetStore.replace had already committed and turned a durable success
into a reported failure. They are settled individually now; the callback is
wrapped because a synchronous throw would otherwise escape before allSettled
sees the array.

audioFiles rows are keyed globally by audioId, so deleting a stage removed
the sole row for an id a surviving document still referenced — playback and
both export paths read that table directly and cannot fall back to the
preserved pool blob. Rows are now filtered against surviving references,
while a failed enumeration still withholds only the irreversible pool
removal.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(media): serve replaced bytes from the pool everywhere

Unknown survivor liveness deleted every planned audioFiles row. Those rows
are keyed globally by audioId, and playback plus both export paths read the
table directly, so losing one is as irreversible for them as removing the
pool entry. Unknown liveness now preserves the rows too, leaving bounded
garbage for a later pass that can prove exclusivity.

The earlier pool-first change covered PPTX, video collection and thumbnail
hydration but missed classroom ZIP export, which still serialized the stale
compatibility row after a lagged same-id replacement, shipping media the
classroom no longer renders.

Auditing every direct reader of the media and audio tables surfaced the same
gap in playback: speech regeneration also replaces bytes under a stable id
and does not roll the pool back when the compatibility write fails, so the
player kept serving superseded narration. It now resolves the pool first and
falls back to stored rows for legacy and imported audio.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(audio): replace exclusively owned speech clips in place

regenerateSpeechAudio accepted the action's audioId but always passed
undefined as replaceAssetId, so regenerating an exclusively owned
pool-backed clip allocated a new asset every time, rewrote the action and
orphaned the previous pool entry and compatibility row until stage
reclamation — contradicting the stable-id path generateAndStoreTTS already
implements for media.

Ownership is now established before synthesis, and the rule itself moved to
the shared reference module so media retries, poster replacement and speech
regeneration consume one implementation instead of restating it. An
exclusively owned clip keeps its id and has its bytes replaced; a shared
clip, a legacy id with no pool entry, or unprovable ownership still gets a
fresh allocation so other holders keep their audio.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(media): drop the import left behind by the ownership move

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(media): resolve audio pool-first and fence peer realms

Stable-id TTS regeneration commits replaced narration to the pool before the
audioFiles mirror write, so a failed mirror leaves the row stale. AudioPlayer
already resolved pool-first, but audioObjectUrl, collectAudioFiles and the
video timeline dependencies still read Dexie directly and would serve the
superseded clip. All allocated-audio readers now share one resolver, with
Dexie kept as the fallback for legacy and imported rows.

The exclusivity proof modelled unflushed owners in the active realm only, so
another tab duplicating the same asset during its save debounce could still
be observed as a single owner and have its bytes replaced globally. A peer's
pending state cannot be read across realms, so presence is probed instead:
any realm holding the stage forces the fork path.

A deferred asset-pool deletion no longer reloads the page. The database is
still on disk and the guidance asks the user to close the other tab and
retry, which the reload discarded. The decision moved into a shared helper so
the rule is pinned rather than living inline in the component.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(media): fail closed when presence cannot be probed

The presence helper documented that an unanswerable probe must count as a
peer, but every unavailable path — no BroadcastChannel, a constructor that
threw, a send that failed, and the window before the pool's asynchronous
binding completes — returned false, so the ownership proof cleared a single
local owner and replaced globally shared bytes in place.

Probing now returns present, absent or unknown, and only a probe that was
actually sent and went unanswered is absent; the ownership decision treats
unknown exactly like present. The pool declares its binding intent
synchronously so a probe issued during the load-time window waits for the
bind instead of concluding that presence is unavailable, and releases that
gate if the import fails.

Coverage reaches the write boundary: with presence unknown, a
production-shaped targeted retry forks to a fresh id instead of calling
replace, and the original bytes stay intact for a peer's unflushed owner.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* chore(dsl): bump to 0.6.3 after the release dedupe took 0.6.2

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

* fix(i18n): add the deferred-clear guidance to fr-FR

The locale landed on main after this branch added the key, so the alignment
check flagged it as the one missing translation.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: 杨慎 <117187635+cosarah@users.noreply.github.com>
2026-08-06 18:49:34 +08:00
b4e3145c90 feat(roster): single-source the generated agent roster on the stage document (#994)
* feat(roster): single-source the generated agent roster on the stage document

The generated agent roster used to live in two places at once: the stage
document carried generatedAgentConfigs, while a per-stage IndexedDB mirror
(db.generatedAgents) was the actual read authority — and the only home of
each agent's voice binding. The split caused real losses: voices vanished on
device switches, exports, and shares (the mirror never travels), the load
path trusted a device-local table over the portable document, and roster
edits persisted through a bespoke debounce with no beforeunload flush.

Make the stage document the single source of truth:

- Contract: add optional voiceConfig/voiceDesign to GeneratedAgentConfig in
  @openmaic/dsl (VoiceDesign moves into the contract; the app re-exports it).
  Additive optional fields — not a breaking serialized-shape change, so
  DSL_VERSION stays put per the version policy.
- Writes: remove every mirror writer (registry saveGeneratedAgents, the
  stage store's debouncedSaveAgents bypass, classroom-load hydration, import
  direct writes). setStageAgents now only marks the stage dirty for the
  shared persistence scheduler plus synchronous in-memory registry/selection
  mirrors; generation and import embed the roster on the stage.
- Reads: classroom load hydrates the registry from the loaded stage's
  generatedAgentConfigs; export reads the stage roster directly.
- Lazy migration: the mirror is retained read-only. On load, a roster (or
  voice fields) missing from the document is backfilled from the mirror,
  committed onto the in-memory stage, and persisted by the next flush —
  idempotent, and gated on the current stage id after every await so a
  classroom switch cannot leak a stale roster into the registry.
- Deletion: deleteStageData discards the deleted stage's pending
  persistence work so a queued flush cannot resurrect the document.
- Round trip: classroom ZIP manifests now carry the voice fields, so
  export/import preserves agent voices.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(roster): harden deletion, migration, selection, and ingress paths

Review hardening on top of the roster single-source change:

- Deletion vs in-flight persistence: deleting a stage now registers a
  session-scoped tombstone (lib/utils/deleted-stages.ts) before the cascade
  starts. Every persistence landing point checks it — the scheduled flush and
  the departing-stage retry drop their snapshots, and the aggregate/incremental
  saves re-check under the document lock, including the incremental path's
  full-save fallback that would otherwise rebuild a deleted document from the
  in-memory snapshot. A deletion that fails before the document is removed
  lifts the tombstone so the still-existing stage keeps persisting.
- Lazy migration termination: a fruitless legacy-mirror probe (nothing to
  merge — e.g. server-generated rosters, which are voiceless by design) is
  remembered per stage for the session instead of re-querying the mirror on
  every load forever. Successful merges are not memoized so a failed flush is
  retried on the next load. Docstrings now state the real lifecycle.
- Selection provenance: setStageAgents no longer overwrites a user-set agent
  selection with the full roster. Stage-derived selections still track the
  roster; a user-set auto selection is only narrowed to surviving agents
  (newcomers are not auto-selected, the user-set flag is untouched), and a
  user-set preset selection is left alone — matching restoreAgentSelection.
- Mirror hygiene: deleteStageData clears the deleted stage's rows from the
  legacy roster mirror (best-effort), and the mirror table's docs now describe
  its actual access pattern (migration reads + deletion hygiene).
- Registry persistence: the agent registry's persist snapshot partializes
  generated agents out of localStorage, making the stage document the roster's
  only durable home; the rehydration merge filter remains as defense in depth.
- Ingress validation: imported manifest voice fields are structurally
  validated (malformed bindings dropped per field, the agent survives), and
  applyGeneratedAgentsToRegistry validates providerId against the known TTS
  provider registry instead of casting, treating unknown providers as "no
  bound voice".
- Contract: drop the speculative AgentVoiceConfig.modelId — an audit of every
  roster producer, current and historical, found none that ever emitted it.
  Contract fields are added once a producer exists, not before.

New tests cover the deletion tombstone at both the store and storage layers
(including the missing-destination full-save pin and the lock-race re-check),
the fruitless-probe memo, the selection-provenance matrix, persistence
exclusion of generated agents, and voice-field sanitization on import.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(roster): close tombstone lifecycle, probe-memo, and selection-intent gaps

Second hardening pass over the deletion/migration/selection fixes:

- Tombstone lifecycle: a deleted classroom id can legitimately come back
  (deletion is client-side only). Explicit (re)creation points now lift the
  tombstone — server-copy restore in applyClassroomStageAndScenes and backup
  restore in importDatabase — so edits after a same-session restore persist
  again, while in-flight flushes stay fenced.
- Failed deletion now restores the dirt it discarded: deleteStageData
  snapshots the pending map plus the in-flight round before tombstoning, and
  re-marks it when the delete fails with the document still present.
- Legacy-mirror probe memo now distinguishes a FAILED read (null, retried on
  the next load) from a confirmed-empty mirror (memoized), so a transient
  IndexedDB error cannot suppress migration for the whole session.
- Incremental save tail (currentScene KV row + chat sessions) is tombstone-
  fenced like the aggregate path, and both paths re-check the tombstone
  immediately before every write, with comments scoped honestly for the
  lock-free (no Web Locks) best-effort LWW fallback.
- Roster-edit selection mirror: an empty intersection now falls back to the
  full roster and clears the user-set flag (matching restoreAgentSelection's
  length > 0 gate), and a user-set selection that equals the pre-edit full
  roster keeps tracking the roster wholesale so newcomers are not excluded
  forever by the AgentBar auto-toggle snapshot.
- TTS/ASR provider lookups use Object.hasOwn instead of `in`/bare indexing,
  so prototype-chain keys ('toString', 'constructor', ...) no longer pass the
  provider whitelist or resolve to Object.prototype members.
- Documented the per-tab limit of the tombstone set.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(roster): replace the boolean deletion tombstone with a deletion-generation model

A boolean tombstone cannot express the deletion lifecycle once a deleted id
legitimately comes back (server-copy restore on revisit, backup import): after
the restore lifts the flag, a pre-delete flush still in flight is
indistinguishable from a post-restore edit and can overwrite the restored
document with pre-delete content. Two rounds of point fixes kept leaking
variants of this race, so this restructures the fence instead.

deleted-stages.ts now keeps a per-stage monotonic deletion epoch plus a
deleted flag. markStageDeleted bumps the epoch; unmarkStageDeleted clears
only the flag and never rewinds the epoch. Every persistence path captures
the epoch at the moment it captures the data it will write (flush-round
snapshot, departing-stage snapshot, aggregate save entry) and re-checks
"captured epoch is current AND not deleted" immediately before each
individual write. Invariants:

- A write captured before a deletion can never land after it, even when a
  same-id restore has lifted the deleted flag (the captured epoch is
  permanently stale).
- A write capturing data after a restore observes the current epoch and
  persists normally.
- A failed deletion lifts only the flag; the restored pending changes are
  re-queued as descriptors, so their flush re-captures current store state
  under the current epoch and is neither dropped nor a stale replay.

Also fixed in the same restructuring:

- Incremental tail writes (currentScene, chats) each re-check independently;
  a delete landing while the first tail write is awaiting now fences the
  chat write instead of riding the earlier check.
- Deleting a classroom evicts it from the warm in-memory store, and
  loadFromStorage treats a warm-but-deleted stage as not loaded (discarding
  the ghost), so navigating Back to a deleted classroom reaches the
  server-restore path instead of rendering an editable ghost whose every
  edit is silently dropped.
- importDatabase records each document's pre-import deletion state and
  reinstates it when a failed import rolls the document back, so an
  outstanding flush cannot recreate the rolled-back document.
- Docstrings on the failed-deletion restore path now state that only dirt
  captured before the deletion is restored; edits refused during the
  deletion window are not part of the snapshot.

New tests cover the epoch invariants at the storage layer (pre-delete rounds
dropped across restores on the incremental, aggregate, and tail paths;
post-restore captures landing; strictly increasing epochs), the scheduler
layer (departing-retry delete+restore straddle; restored dirt flushing under
the current epoch), the warm-ghost restore driven through the real
loadFromStorage, and the import lift/rollback pair.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(deletion): report fenced drops, gate ghost eviction on cascade settlement

Edge hardening around the deletion-epoch fence; the epoch model itself is
unchanged.

- An epoch-stale drop is now reported, not disguised: saveStageData /
  saveStageDataIncremental return a distinct 'stale-dropped' status (entry
  check, every in-mutation re-check, and both tail-write re-checks) instead
  of a shape identical to success. saveToStorage reacts by skipping all
  success bookkeeping - no chatSnapshot rebind to a snapshot that never
  landed, no pending-dirt clearing - and returns false, keeping its
  "true means verified write" contract honest. persistDirtySnapshot keeps
  its existing (correct) semantics explicitly: a drop has nothing to retry.
- Warm-ghost eviction is settlement-gated: the deletion cascade records an
  in-flight bit (begun by deleteStageData, settled in its finally), and the
  deleted-warm branch of loadFromStorage keeps the warm state while the
  cascade is unsettled - a delete can still fail before removing the
  document, in which case the warm state plus the restored pending dirt is
  the only copy of the pre-delete edits. Once settled, the ghost discard
  and server-restore path behave as before.
- Read-side landing re-check: loadFromStorage re-checks isStageDeleted
  after hydration, immediately before set(), mirroring the write-side
  "re-check immediately before landing" discipline - a lock-free
  mid-cascade read can no longer re-materialize a ghost classroom.
- clearStoreForDeletedStage re-checks isStageDeleted at eviction time, so a
  same-id restore completing inside the cascade-tail window is never wiped.
- capturedEpoch is now a required parameter on both storage entry points:
  the default (call-time capture) silently reopened the capture-point/
  validation-point split for future callers; the type system now enforces
  the pairing. All production callers already passed it explicitly.

New tests cover the dropped-status contract, the cascade in-flight
lifecycle (including both failure shapes), keep-warm during an unsettled
delete with end-to-end pending restore after a failed delete, settlement-
then-eviction on success, the eviction guard against a tail-window restore,
and the read-side hydration re-check.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(deletion): settle the deleted-warm load by awaiting the cascade outcome

Hardening around the deletion settlement gate introduced previously; the
epoch model is unchanged.

- The deleted-warm branch of loadFromStorage no longer completes the load
  while the deletion cascade is undecided (which exposed a classroom whose
  edits were refused without being restorable, and left a successful
  deletion's eviction with no follow-up reload). It now parks on a per-stage
  settlement promise (stageDeletionSettled) and branches on the outcome:
  a failed delete keeps the warm, restored classroom; a successful delete
  falls through to a full cold load so the server-restore path recovers the
  route; a navigation that moved on during the park is stopped by the load
  token guard. The eviction (clearStoreForDeletedStage) deliberately stops
  claiming a new load token so the parked load stays current - ghost
  re-materialization is fenced by the read-side deleted re-checks instead.
  No deadlock: a parked load holds no document lock, and the cascade never
  waits on a load.
- 'stale-dropped' now propagates through the debounced flush path:
  persistDirtySnapshot returns the sentinel instead of an empty failure set,
  and startFlushRound skips the chatSnapshot rebind on it (mirroring
  saveToStorage) - a falsely rebound baseline would let later chat saves
  no-op-skip chats that never landed and corrupt cross-tab conflict
  detection. Pending-map clearing keeps its empty-failure semantics
  (restored descriptors mint fresh revisions).
- The cascade in-flight state is a counter (begin++/settle--) instead of a
  boolean, and deleteStageData is single-flight per stage (a concurrent
  second call joins the first cascade), so overlapping deletions can never
  expose an undecided cascade as settled.
- The StaleDroppedSave docstring no longer overpromises: a tail
  saveCurrentScene can land after the cascade's clearCurrentScene; the
  orphaned cursor row is ignored by the load path rather than removed by
  the cascade.

Net +8 tests: overlapping-cascade counting, settlement-promise resolution
(success and failure), concurrent double-delete single-flight join, the
parked mid-cascade Back in both outcomes plus the navigation-away guard,
and the fenced flush round keeping an honest chat baseline end-to-end.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(deletion): re-verify store identity on keep-warm resume, re-run joined deletes after a mid-cascade restore

Three hardening refinements on the deletion/persistence fencing:

- loadFromStorage's parked keep-warm branch now mirrors the success
  path's store-identity guard: if a tokenless writer (e.g. a database
  import) replaced the stage during the park, a failed deletion falls
  through to the cold load instead of reporting another classroom as
  the kept warm state. The ghost-discard block is correspondingly
  gated on the deleted flag so the fall-through does not mislabel a
  surviving document as a ghost.

- deleteStageData: a joined call carries its own deletion intent. When
  the first cascade fulfills but a same-id restore lifted the deleted
  flag in the meantime, the joined caller now runs one fresh cascade
  against the restored document instead of reporting the pre-restore
  outcome. Exactly one re-check per call (no recursion); a rejected
  first cascade still propagates unchanged to every joined caller.

- Narrowed the failed-delete restore-ownership comments: the restore
  covers only the pending map plus an in-flight flush round's dirt;
  a departing-stage snapshot is outside that capture and is fenced
  and dropped by design. Comment-only, no behavior change.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(roster): gate deleted-warm handling on stage identity, keep an explicit empty roster authoritative

Final-audit fixes, three items:

- loadFromStorage keyed its deleted-warm settlement handling (park /
  keep-warm / ghost discard) behind the scenes.length > 0 shortcut, so a
  zero-scene warm ghost of a deleted classroom skipped it entirely: the
  cold load found no document, the ghost stayed in the store, and the
  classroom loader's server-fallback gate (!getCurrentStage()) never ran
  — the silently-uneditable trap this branch exists to close, in its
  scene-less form. Deletion handling now keys on stage identity alone,
  before any scene-count shortcut; the non-deleted warm skip still
  requires scenes.

- rosterNeedsLegacyFallback collapsed "roster field absent" (document
  predates roster persistence) with "explicitly persisted empty roster".
  A future writer persisting [] on a device whose read-only mirror still
  held stale rows would have its emptied roster resurrected on every
  load. The full-lift branch now triggers only when the field is absent
  (undefined); an explicit [] is authoritative and never probes the
  mirror. No current writer produces [], but the read side no longer
  depends on that invariant.

- The GeneratedAgentConfig docstring claimed the voice fields are not a
  breaking change; that only holds for this codebase's tolerant
  structural validators. The generated stage.schema.json sets
  additionalProperties: false, so consumers pinning an older published
  schema artifact reject documents carrying the new fields. The
  docstring now states both sides honestly.

Tests: a zero-scene deleted warm ghost is restored through the real
loadFromStorage (fails pre-fix), an explicit empty roster does not
resurrect stale mirror rows (fails pre-fix), and the
rosterNeedsLegacyFallback unit matrix covers undefined vs [].

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(deletion): re-queue aggregate persistence when a failed deletion is recovered

Direct aggregate saves (saveToStorage: generation completion, server-restore
hydration) run outside the pending map and the flush round, so the deletion
path's pre-delete dirt snapshot cannot describe them. When a deletion bumped
the epoch while such a save was in flight, the save was correctly fenced
('stale-dropped') — but if the deletion then failed before removing the
document, the recovery only re-queued the snapshotted scheduler descriptors.
The fenced aggregate-only content stayed memory-only with no retry anywhere,
and a later reload lost it.

The failed-deletion restore now merges a full re-mark of the aggregate
(structure / stage / outline / currentScene / chats plus a descriptor for
every current scene) into the recovery set, still guarded on the store
holding the stage. Because the flush recaptures the CURRENT store state under
the CURRENT epoch, this necessarily carries whatever the fenced aggregate
save held — and, for the same reason, edits refused by the scheduler during
the deletion window, which previously stayed memory-only as well; the scope
docstrings now say so instead of declaring them excluded.

New integration coverage drives the real store scheduler and the real storage
layer end to end: a genuinely fenced in-flight saveToStorage (generation
completion) plus a pre-removal deletion failure ends with the completion flag
durable on the next flush; a deletion-window scene edit survives the same
way; and a successful deletion re-marks nothing (control). Both recovery
tests fail against the previous restore logic.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
Co-authored-by: 杨慎 <117187635+cosarah@users.noreply.github.com>
2026-07-27 14:39:19 +08:00
Yizuki_Ame 0db93bde0a fix(storage): store image files as array buffers (#923) 2026-07-14 20:43:05 +08:00
wyucand杨慎 5081f19c1f fix image storage IDs containing underscores (#918)
Co-authored-by: 杨慎 <117187635+cosarah@users.noreply.github.com>
2026-07-14 14:22:27 +08:00
f98a7e0b3e perf(editor): dedupe alignment snap-lines in O(n) instead of O(n^2) (#692)
uniqAlignLines used Array.findIndex inside a forEach (O(n^2)) to merge
alignment snap-lines. It runs on every drag/scale mousemove and the line
count scales with nearby element edges, so it janks on element-dense
canvases. Dedupe via a Map keyed on value (O(n)); a Map preserves
first-occurrence order, so output order and range-merge semantics are
unchanged.

Closes #691

Co-authored-by: ly-wang19 <ly-wang19@users.noreply.github.com>
Co-authored-by: wyuc <wang-yc24@mails.tsinghua.edu.cn>
2026-07-11 22:09:12 +08:00
3ccd5da6da feat(generation): opt-in parallel scene-content generation (#660)
* feat(generation): opt-in parallel scene-content generation

Scene generation was strictly serial — content -> actions -> TTS, one
outline at a time — so an N-scene classroom paid N x (content + actions
+ TTS) of wall-clock latency, which dominates the post-outline wait.

Add an opt-in hybrid two-phase path (#572):

- Phase 1 fetches scene *content* concurrently (bounded). Content is the
  only per-scene step independent of cross-scene state, so it is safe to
  parallelise; a content failure marks just that outline and does not
  pause the batch.
- Phase 2 keeps the existing in-order actions + TTS loop, so
  previousSpeeches threading, ordered addScene, the abort/epoch guards,
  and the pause-on-failure UX are all unchanged.

Gated by a server-side PARALLEL_SCENE_CONCURRENCY (default 0 = off,
clamped to 10), surfaced to the client through the existing
/api/server-providers response. With it unset the content map is null
and the loop is byte-for-byte the original serial path, so out-of-box
behaviour is unchanged.

The bounded worker pool is extracted to lib/utils/concurrency.ts
(mapWithConcurrency, with an early-stop hook for abort/epoch) and
unit-tested; getParallelSceneConcurrency env parsing/clamping is tested
too.

Closes #572

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* refactor(generation): pipeline content fetches instead of a barrier

Address @wyuc's review on #660. The previous version awaited the whole
bounded content pool before Phase 2, so for N > C scenes the user saw the
first scene, then a stall on a single page for the entire content phase,
then a burst — perceived as worse than serial despite the wall-clock win
(the gap scales with ceil((N-1)/C)).

Pipeline instead: lazyBoundedMap starts the content fetches (<= C in
flight) and returns one promise per outline immediately; the serial loop
awaits them in order, so each resolves as soon as its own content is ready
(usually already done, hidden behind the previous scene's actions/TTS). The
first scene now paints after content(1)+actions(1)+TTS(1) — same as serial
— with the full concurrency benefit and no stall.

Also from the review:
- a content fetch can no longer take its siblings down: an unexpected throw
  is caught and returned as a failure result, routed through the same
  mark-failed path as the serial loop (symmetric);
- drop the cosmetic Phase-1 setCurrentGeneratingOrder — the loop already
  sets it per outline;
- note the intentional belt-and-suspenders clamp;
- concurrency.test.ts asserts <= limit (not == limit), and gains
  lazyBoundedMap tests including the no-barrier property.

mapWithConcurrency is kept as a thin await-all wrapper over lazyBoundedMap.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: ly-wang19 <ly-wang19@users.noreply.github.com>
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-authored-by: wyuc <wang-yc24@mails.tsinghua.edu.cn>
2026-06-08 07:44:33 -04:00