6 Commits

Include renames

Author	SHA1	Message	Date
LeoParkerOuandwyuc	ec20ba345f	refactor(classroom): share per-course session lifecycle (#1619) ... Co-authored-by: wyuc <wang-yc24@mails.tsinghua.edu.cn>	2026-09-20 21:14:20 +08:00
4 people	ed18042fde	fix(vocational): send taskEngineMode on the on-demand scene path (#716) ... The vocational gate keys off requirements.taskEngineMode in the /api/generate/scene-content body, but only the first scene (generation-preview) sent it. Scenes 2..N and retries run through useSceneGenerator.generateRemaining / fetchSceneContent, which never sent requirements, so resolveVocationalActive returned false and applyOutlineFallbacks rewrote every later procedural-skill scene to diagram — silently dropping the task-engine training mechanism for most of a vocational course (the outline says procedural-skill while the content path strips it). Thread the persisted stage.taskEngineMode through GenerationParams into both fetchSceneContent bodies (the retry path inherits it via lastParamsRef), mirroring what the first-scene request already sends. Server contract is unchanged; the flag is still ANDed with the OPENMAIC_ENABLE_VOCATIONAL env gate server-side. Closes #715 Co-authored-by: ly-wang19 <ly-wang19@users.noreply.github.com> Co-authored-by: wyuc <wang-yc24@mails.tsinghua.edu.cn> Co-authored-by: Claude Opus 5 <noreply@anthropic.com>	2026-09-20 00:26:51 +08:00
DDLandwyuc	0b2e502811	fix(classroom): keep transient load failures off the not-found card (#1485) ... * fix(classroom): keep transient load failures off the not-found card /api/classroom 5xx and network errors used to become null, so ClassroomSurface treated them like a missing course and rendered the terminal not-found claim with no retry. Classify fetch answers as found/absent/unavailable and only show not-found on a positive 404/410 miss. Fixes #1450 * fix(classroom): handle terminal load states --------- Co-authored-by: wyuc <wang-yc24@mails.tsinghua.edu.cn>	2026-09-15 16:25:21 +08:00
3 people	85ef52d599	feat(media): write generated media through the asset pool under server-backed persistence (#1392) ... * feat(media): store generated media in the asset pool when persistence is server-backed With server-backed persistence the document is durable and shared, but generated media stayed in the producing browser: the document kept its gen_img_* / gen_vid_* placeholder and narration kept a browser-derived audio id. Every new browser that opened such a course re-ran generation for every slide, and it never converged, because the address of the generated bytes was never written back into the document. Under server-backed persistence only, the classic generation chain now stores bytes in the asset pool first and writes the id the pool allocated into the document. - The client bootstrap configures the asset seam alongside the document and runtime seams: an HttpAssetStore over the persistence endpoint carrying the same credentials the document store carries, marked server-backed. The seam preflight now covers all three, so a failure still cannot half-configure persistence. - Image, video and TTS generation commit in one fixed order: provider, pool, document, local cache, task. A reference reaches the document only after put returned an id, so a document can never name bytes that were not stored. A failure before the write-back leaves the placeholder with the provider called exactly once; the retry happens on the next owner load. - The write-back is a per-slot rewrite through mutateDocument, which re-reads the current document under the per-stage lock, so it cannot clobber a newer scene. The open course is refreshed with the same rewrite without being marked dirty. - "Has this already been generated?" is answered by the document (the slide exists and no longer holds the placeholder) instead of by this browser's task table. - The classroom's resume effect fails closed on ownership: only a resolved owner starts generation, so a viewer opening a shared course spends nothing. - The local media and audio tables become a per-tab cache. A failed cache write costs a re-download, never the media. Browser-only mode is unchanged: every new call site sits behind the server-backed gate, the local tables stay authoritative there, and placeholders stay in the document. Rendering and export needed no changes. HttpAssetStore.resolve mints an object URL exactly as the browser store does, and the export byte resolver was already pool-first. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(classroom): make the generation owner gate a three-outcome rule and apply it everywhere The gate refused everything but a resolved owner, which read a sidecar that answered "no ownership fact exists for this course" as a reason to block. That is the answer a deployment without the sidecar's server-side prerequisites gives for every course, and the answer a course with no ownership record gives: in both, there is nobody the operator's budget needs protecting from, and refusing strands the course's own author behind a question that can never be answered. Ownership is now four states over the sidecar's three outcomes. A definite answer splits into owner and not-owner. An absent record is its own answer, ownerless, and generation proceeds — the behaviour such a deployment had before the gate existed. Only the absence of an answer, a transport failure or a load that has not asked yet, stays unresolved and fails closed: "we could not ask" must never be read as "nobody owns this". One mapper turns a sidecar result into that state, and one predicate decides on it. The workbench classroom pane runs the same resume effect and had no ownership input at all, so a viewer opening a shared course there could still spend the budget. It now asks the sidecar once per course, in parallel with its load and feeding only the generation gate, so its read-only and edit behaviour is unchanged. The shared progressive-load policy carries the gate for it, with both new inputs required rather than defaulted so a future caller cannot omit them into an open budget. Its stale comment claiming ownership could not be expressed here is corrected. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): make the write-back survive autosave, arrive before the scene does, and never leak Independent reviews of the write-back found three ways a durable document could still end up naming a placeholder, and two ways the gate that protects the operator's budget could be walked around. An autosave round captures the store synchronously and writes that capture, so a round already in flight when a rewrite landed wrote the placeholder straight back over the allocated id, and nothing marked the store dirty again to correct it. The rewrite now marks the units it changed, which leaves a corrective flush queued behind the stale one; re-saving a scene that already holds the id is idempotent, losing the id is not. Media is generated from outlines in parallel with scene content and usually finishes first, so the slide that will carry the placeholder does not exist yet and the write-back has nothing to rewrite. That was the ordinary path, not a tail case, and its result was discarded: the task was marked done, the scene was added afterwards with its placeholder intact, and a second pass in the same run could call the provider again. The allocation is now held under the placeholder — which also answers the skip test, so nothing pays twice — and applied when that scene is committed, before its first save. One complete pass now leaves no placeholder behind. A failed commit used to abandon what it had already allocated. A poster upload that failed threw away a stored video and sent the retry to submit the most expensive job in the system again; a rejected write-back left registry rows that name bytes nothing references, which the byte collector cannot reclaim because it only collects blobs no row names. A poster failure now costs the poster, and a write-back that reached nothing reclaims what it allocated. A partial write is left alone, because the document already names it. The ownership gate is fail-closed again. Treating the sidecar's 404 as permission was wrong: the client cannot tell "this course has no owner" from "this deployment told me nothing", so a visitor who opened a shared course could bill the operator. The root cause was the sidecar itself, which gated on the agent runtime although every persisted course has an owner regardless — the persistence route resolves one for every request. It now gates on server persistence, so the configuration that made 404 the universal answer has real ownership facts to report, and the gate can refuse everything but a named owner. Retry affordances answered to no gate at all. A viewer of a shared course with one failed image was shown a Retry button that called the provider. Both retry entry points and every surface that draws them now read one shared permission, so what is offered and what is allowed are the same value. Also: narration regeneration no longer pretends it can replace bytes behind a live id — the exclusivity proof that would allow it is refused by construction once references leave the browser, so it forks to a fresh id and says so; the "already generated" test lets a finished deck answer from the document alone, since scene order stops identifying an outline once slides are inserted or deleted; stored assets record a specific media type rather than a generic transfer type; the pane no longer asks the sidecar in browser-only mode; and the funnel's docstring now states what the per-stage lock actually guarantees, which is same-browser serialization and not a cross-browser compare-and-swap. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): park allocations in the deciding turn, never reclaim on an ambiguous write A delta review of the write-back found the first-pass fix still had a window, and the reclamation it added could delete media the document already names. The allocation was parked after an awaited local cache write. A scene committed in that window reconciled against a registry that did not hold it yet, so the document kept the placeholder — and the entry recorded a moment later then answered the skip test as "already handled", so nothing could correct it. Parking now happens inside the write-back, in the same synchronous turn as the decision that nothing could take the reference; no await separates the live check from the park. Allocations parked by an earlier pass are handed to their slides at the start of the next one, before anything decides what still needs generating, so a held allocation whose scene has since arrived becomes a rewrite rather than an answer. Reclaiming on a rejected write was unsound: a rejection does not prove the server did not apply the write, so deleting the asset could break the scene that now names it. The funnel decides instead, and says so: it reclaims only when no store write was ever issued and nothing took the reference. Anything else is placed if its slide exists and parked if it does not, so the next pass reuses the bytes instead of paying for them again. When a write fails after part of it landed, the live store is brought up to the document before the error is rethrown — otherwise the next ordinary flush would overwrite the half that did land, with the ids deliberately not reclaimed. Parked allocations are now cleared with the course. Classic placeholders are reused across runs, so one surviving an interrupted run would be handed to a different slide of the next deck: the previous picture, on a slide whose provider was never asked. Both classroom surfaces clear the arriving course, the deletion cascade clears the deleted one, and clearing the database clears them all. Two more ways generation could start without asking the gate are closed. An overlapping pass — an outline retry re-enters generation with every outline while the first is still working — re-requested elements whose provider call was already in flight; a task that is not done is an answered request, not an unanswered one. And narration regeneration in the timeline editor called the TTS provider and allocated a pool asset with no ownership check at all; it now reads the same permission, which withholds both the per-line and whole-timeline controls and refuses the call. Finally, a pane opened during the stage-link availability gap recorded the sidecar's 404 for a course that was moments from existing and never asked again, leaving the real owner locked out of generation until it remounted. Ownership is re-fetched once the document becomes available; the gate stays closed until an answer arrives, so asking again can only open it for someone entitled to it. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): make the asset routes reachable, and stale snapshots harmless A full-branch audit found that the deployment this project documents could not store a single generated asset, and that several routes into durable storage could still write a placeholder over a reference that had already landed. The persistence route sent asset requests through the development authenticator, which refuses outright in a production build that has not explicitly opted into it — and the documented server-persistence recipe produces exactly that build. Every store and every read answered 401, so images and video failed on every slide while re-billing the provider on each retry, and a narration failure stopped the deck at its first slide. Assets live in one shared partition by design, so there was never anything per-caller for that authenticator to decide: the route now resolves the asset principal itself, alongside the owner it already resolves for documents. Runtime sessions are genuinely per-learner and keep the development authenticator until real session verification replaces it. And narration that cannot be stored no longer fails its scene: the line stays unvoiced and retryable, which is what an image that cannot be stored does to its slide. Placeholders could also come back from behind. A queued autosave's snapshot, an editor-history entry replayed by an undo, the departing save a course switch flushes — each captures content at its own moment, and any of those moments can predate a write-back. Point fixes at each producer would leave the next producer to rediscover the bug, so the check lives at the write boundary every producer passes through, and the allocation record it consults now outlives the parked queue: a placeholder whose rewrite landed long ago is exactly the case it catches. Two ways generation could be lost or repeated are closed. A pass now claims the elements it will reach and releases them however it ends, so an overlapping pass stands down while an aborted one strands nothing — previously its tasks stayed `pending` and every later pass skipped them with no retry control to recover them. And the media abort controller is aborted before being replaced, so a superseded pass stops calling providers instead of running on for a course the user has left. The remaining two are narrower. The workbench pane asks for ownership only after a document load succeeds, and after every later one, mirroring the page route: the load is what creates the ownership row the first time a course is opened, so asking beforehand asked about a course that did not exist yet and locked its author out for the mount. And the ownership gate on the timeline editor now withholds narration regeneration alone; listening back to existing narration and seeing whether a line has any spend nothing and stay available. Known limitation, unchanged and now stated plainly in the comments that used to point at it as a solution: nothing reclaims an unreferenced pool asset. The registry sweep is written but not wired up, and the byte collector only reclaims blobs no registry row names, so every narration regeneration and every abandoned allocation leaves storage behind. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): gate asset mutations, and make claims and allocation records survive a handoff Opening the asset routes opened all of them. Reads and allocations are meant to be as open as document reads and creates already are, but no authorization hook was supplied, so the handler's default admitted PUT and DELETE too — and those scope by principal key alone, which is one shared constant. Any caller who learned an id, and a document read hands out every id its slides name, could overwrite or destroy another author's media. Mutations now require the deployment's credential, which in a production build without the development-auth opt-in means they are refused outright; reads and allocations stay open. The route comment says what the posture is and what it is not: the deployment-level fence is the access code, and no per-principal quota is configured. The client's own reclaim is best effort to match — losing an argument about deleting an asset must not cost a task its retry, and the bytes are left for server-side reclamation. The pass claim could not survive the handoff it was written for. A retry aborts the live media pass and starts its replacement in the same synchronous block, long before the aborted pass's cleanup runs, so the replacement saw every element still claimed, collected nothing, and returned — leaving each unreached element at pending with nobody coming back for it and no retry control to recover it, which is the exact failure the claim was introduced to prevent. A claim now carries its pass's signal and is retired the moment that signal aborts, and a pass releases only claims it still owns, so a late unwind cannot take its replacement's work. Claims are also acquired at the single point every request passes through, so a single-task retry participates too — previously a retry awaiting its provider was invisible to a pass starting alongside it and both called it. The allocation record could outlive the bytes it named. It was written before the write-back attempted anything and survived the reclaim that followed a failure, so when the slide finally arrived the write boundary stamped a deleted id into the document — and the placeholder it replaced was gone, which reads as already generated and stops anything from retrying. The record is now written only where the allocation is retained, and forgotten wherever a reclaim removes the bytes, including the narration rollback path. The tests follow. The route test drives the real storage handler against an in-memory registry instead of a stub, so it can see what the resolved principal is then allowed to do; the handoff test performs a real abort mid-pass rather than starting from an already-aborted signal; and the guards that could only assert file layout now assert the property they care about, or have been replaced by behaviour. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): make media passes serial per course instead of tracking element ownership Three rounds of per-element claims each produced a new way to lose an element. Whole-pass reservations swallowed a Retry for an element the same pass had already failed, leaving it pending with the affordance gone. Retiring a claim by its signal freed an element whose commit was still uploading, so the replacement pass paid for it twice. A claim held for a failed element stranded its retry. The bookkeeping is the defect: every refinement of "who owns this element right now" answered the question at a moment when the answer was already stale. Passes for one course are now serial. A replacement aborts its predecessor, as before, and then waits for it to settle before collecting. That removes the question entirely: a commit already under way finishes — its bytes stored and its reference written, so the new pass sees a resolved slide and skips it — and an element the aborted pass never reached is still a placeholder and gets collected like any other. The claim set, the reservations, the signal retirement and the identity-checked release are all gone. The task table is consulted for one thing only: an element that is generating right now is a single-element retry running alongside the pass, and taking it too would pay twice. Pending is deliberately not a skip reason — it means a pass once intended to reach an element, which an abandoned pass leaves behind with nobody acting on it, and reading that as answered is what stranded elements before. A retry runs concurrently with a pass, because a pass never revisits an element it has processed, and it re-reads the task after its own await and refuses before touching it: marking first and refusing afterwards destroyed the failed state that draws the affordance. Browser-only mode is back to exactly what it was. The abort is now conditional, the waiting does not apply, and the original status-based skip is restored verbatim. Two baseline lines remain changed in each of the two files, and both are behind a server-backed fork whose else-branch is the original. Two smaller things. The allocation record becomes visible when a write goes on the wire rather than when the round trip ends, and the write boundary reconciles under the document lock rather than before it — a save queued during a write-back was otherwise captured with the placeholder and, for a course the user had left, had no corrective flush to follow. And the comments that said a refused reclaim leaves its bytes for server-side reclamation were wrong: nothing collects them, because the registry entry still names its blob and the sweep that would remove it is not wired up. They now say the bytes leak. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): make a deferred pass re-earn its right to run, and bound the commit it waits on Serializing passes moved their body out of the block that launched them, and three things followed from that. A pass now wakes when its predecessor settles, which can be after the user has left the course. It enqueued before it looked at its signal, into a task table keyed by element id alone — and placeholder ids are not unique across courses, which is why the classroom clears that table on arrival. So a departing course's pass seeded the arriving course's table with tasks carrying the wrong stage id, and a Retry routes by that id: the reference went into the wrong document. A pass now re-validates after the wait, before touching anything shared. The same lateness broke the skip test. `documentSkipIndex` answers only while the live store is on the pass's stage, and returning nothing put the collection loop on the browser-only rule — a silent demotion from "the document is the authority" to "this browser's task table is", on exactly the path where that table has just been cleared. Every element the predecessor had committed was collected again, paid for again, and its second write-back found no placeholder to rewrite, so its bytes were parked where nothing will ever reference them. In server-backed mode an unreadable document now means the pass stands down. And waiting was unbounded. A commit is uncancellable: the asset client takes no signal, and a document write cannot be half-undone. One stalled upload therefore froze the course's media generation for the session — the replacement never collected, the element sat on a skeleton that draws no Retry, and only a reload recovered. The pass's signal is now threaded into the media proxy fetch, and the commit is bounded by a deadline. The deadline is on the wait, not the work: the commit carries on, and if it lands late the document simply ends up correct, while the element becomes retryable and the queue moves on. The tests that were meant to pin the previous round were not sensitive to it. Two asserted end states where the mechanism only changes ordering, and one of them rigged the document read so the assertion held whether or not the pass had waited; a third covered half of what it claimed. They now observe the ordering directly — nothing is issued while another pass for the course is working; in browser-only mode a second pass reaches its provider immediately — and the reconciliation under the document lock has a test that fails when it moves back outside it. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * revert(media): drop the commit deadline and the abortable download The deadline bought less than it cost. Abandoning a commit after two minutes makes the element retryable while the real commit is still running, so a Retry starts a second commit for the same placeholder against the first: two provider calls, two allocations, and whichever lands second stamps its result over the other's task by element id. The allocation record is keyed by placeholder, so the loser's cleanup erases the winner's record, and the write boundary then puts the raw placeholder back into the document. That is the overlap serial passes were built to remove, reopened through the one door serialization never covered. So a stalled commit holds the course's media queue until it settles or the page is reloaded, and that is written down rather than papered over. The wait is unbounded on purpose: every ceiling on it turns out to be a way of running two commits for one element. Threading the pass signal into the download was also a mistake, in the other direction. The provider call that produced the URL has already been billed, so cancelling the download throws away work that is paid for — and the shared proxy cache records a cancelled request as a transient failure against that URL, which after three of them blocks it for every consumer in the session. Browser-only mode never asked for this: it had no way to observe an abort there, which is exactly why the bytes were kept. The signal is gone from the download again, and `fetchAsBlob` is byte-for-byte what it was before this branch. The regression guard for the stranded-element rule is restored alongside the timing test that was meant to supersede it. It catches a different rule — a task left pending being read as answered — and nothing else does: making the pass skip pending leaves every other suite green. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): stop asking the pool for refs it never issued, bound it, and adopt cached bytes Four things a deployment found once this was running for real. A reference this application mints itself — a generation placeholder, a derived narration key — was never in the pool, because the pool allocates every id it holds. Asking anyway used to be an IndexedDB miss; once the pool is server-backed it is a request that answers 404, one per element per load, forever on a course that still holds placeholders. Every lease and probe now checks first. The check is a negative test on shapes this application owns, not an id validator: the pool's id domain stays unconstrained, and anything that is not one of ours is still asked about. The asset store can bound how much one principal holds, and enforces it inside the write transaction, but nothing ever passed the number. It does now, with a default rather than an opt-in: allocation is reachable by any caller a deployment admits, and with one shared principal an unbounded store is unbounded database growth with no operator-visible brake. Refusing asset mutations to unauthenticated callers was not enough, because every authenticated caller resolves to that same shared principal — so authentication decided nothing, and any signed-in visitor could delete any id they learned. Since this branch began storing media the registry is the only copy a course has. Replacing and deleting are now refused to everyone, and the browser no longer tries: an entry nothing references waits for server-side reclamation instead. What a browser must still do is forget its own record of an allocation that reached nothing, or a later save would stamp an id the document has no reason to trust. And a course generated before any of this holds placeholders in its document with its bytes only in the author's browser. Those bytes are paid for, so the author's next load converts them — stored to the pool and written back through the ordinary commit path, with no provider call — instead of buying them again. A row that records only a hosted URL is treated as absent: that URL is the provider's address, not something a document may hold. One renderer expectation moved with this. An untracked placeholder used to paint as pending on first render because asking the pool left a lease in flight; it settled to disabled a moment later either way, and now says so from the start. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): surface a full store as a refusal and convert legacy narration A quota refusal reached the browser as HTTP 500 with a generic message, which reads as a transient failure: the element kept a Retry that would pay a provider again and be refused again. The store raises the contract's own error and the handler maps it to 507, but the store answering a request is not always built by the same bundle as the handler -- the persistence provider is reached from the route bundle and from instrumentation, which is why its state lives on a Symbol.for global -- and `instanceof` is false across that boundary while the declared code is still right. Classify on the code as well as the class, and make the code a permanent, persisted refusal in the browser: recorded locally so it survives a reload, shown as "storage is full", and refused by the retry entry point so a stale button cannot buy a second generation. Every other storage failure stays retryable. Convert what a pre-server-backed course still holds. Generated media is adopted under either key this application has used for it -- the placeholder, and the allocated id of a course converted once and later rolled back -- instead of only the first. Narration is converted by a load-time pass over the open course's speech actions, since nothing re-enters generation for an action that already has an id: bytes to the pool, id written back through a funnel that mirrors the media one, owner-only and server-backed-only. A line whose bytes are in no browser is left alone rather than re-synthesized. Also: the pool guard is now a positive `ast_` test rather than an enumeration of the shapes we mint (imports never reach the pool, so this is safe in both modes); the slide ref collection is an exported pure function so its four lease sites are covered behaviourally; ASSET_QUOTA_BYTES treats every spelling of zero as opting out and refuses a malformed value at startup instead of falling back; the abort signal is re-checked after the cache read, before an uncancellable commit; and the unused `removeAsset` and pool `replace` surfaces are gone. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * chore(storage): release 0.29.1 The asset HTTP handler now recognises a store refusal by the contract code it declares as well as by its class, so a quota refusal raised in another module realm answers 507 instead of 500. Same contract, stricter recognition, no API change: a patch. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): make a full store recoverable and adoption course-safe Narration adoption read the local audio row by its derived key alone. That key carries no stage id and the table is keyed by id alone, so two courses can mint the same one -- a PPTX import numbers its scenes and actions deterministically, which gives every imported deck's first slide `tts_s1_speech-scene-p1`. Locally a collision only means one course plays another's clip in one browser; adopting it wrote that clip into the shared document permanently, for every device and every visitor. A row that names a course is now adopted only into that course, and a row from before that column existed only when the text it recorded is the text of the action being converted. A full asset store was made permanent last round, which was wrong three times over: it overwrote the refused bytes with an empty blob -- on the conversion path that row is a course's only copy of its own media -- it kept sending the rest of the deck to a provider against a ceiling it already knew was reached, and it left no way back once an operator raised that ceiling. A full store is neither the content's fault nor the configuration's, so it is now its own case: the bytes are kept, the pass stops at the first refusal, and the element shows the reason together with a Retry that re-attempts the upload from those bytes. Nothing retries automatically, so no one is re-billed. The narration write-back now reaches the write boundary every producer of a durable write passes through, not only the dirty mark: adoption never deletes the derived row, so a snapshot that reverts the rewrite is adopted again on the next load and allocates a fresh asset every time. Adoption is also mounted by both classroom surfaces rather than one, takes the course's abort signal, and re-validates that this browser still has the course open before each write. ASSET_QUOTA_BYTES is validated from instrumentation, where the README and the docstring already claimed it was: its only other consumer is lazy and memoised, so a malformed ceiling let the process boot and then failed every persistence request, documents and runtime included. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): remember a full store per course, and never lose retained bytes A stopped pass left the elements it never reached as placeholders with no persisted record -- deliberately, since nothing was attempted for them. But that left the next load with no reason not to try: it called a provider for the next placeholder and was refused at exactly the same point, once per reload, indefinitely. A full store is not a property of any slide. It belongs to the deployment and changes for reasons the document knows nothing about, so it is now remembered once per course in the browser's device KV. A pass that finds the marker stands down before spending anything and leaves every placeholder its "storage is full" state and its Retry; the first upload that succeeds clears it and the next pass runs normally. Narration adoption latched per course so it runs once per load, and the latch outlived the abort that leaving a course performs. On a surface that stays mounted across switches -- the workbench pane is one component for every course it shows -- owner course A, visitor course B, then back to A skipped exactly the clips the abort had cut off, and nothing else converts them. The latch is released with the abort now, and a course adopts one run at a time so a re-entry cannot hand a clip a second allocation while the previous run's uncancellable tail is still settling. A quota-blocked element retried into a network error or a 500 lost the bytes that were kept for it: the retry deleted the row before attempting the upload and wrote no replacement for an error carrying no structured code, so the next retry went back to a provider for media this browser had a moment earlier. The row now survives until an upload succeeds, the failure handler keeps whatever bytes the attempt was given, and the retry asks the question a pass asks -- does this browser already hold bytes for this element -- rather than reading an error code that a second failure has already overwritten. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XypYpLBtk8DB5nT5jyqZ5D * fix(media): adopt real legacy narration, queue re-entries, report attempt outcomes Narration adoption admitted a stage-less row only when the text it recorded matched the action being converted. Both of those columns were added to the local audio table by the very change that moved narration onto allocated ids, so a row still carrying a derived key has neither: the rule refused every real pre-allocation course and passed only on fixtures built from post-allocation rows. What the row cannot say, the key can. A derived key names two clips only when two courses share a scene order and an action id, and an action id repeats only when something other than the generator minted it -- an import numbers them by slide position. So a key built from a generated action id is adopted on that basis, a key an import could have reproduced still needs matching text, and a row that names another course is refused however unique its key looks. Handing a re-entering caller the adoption run already in flight undid the latch release it was paired with: that run is bound to the signal the departure just aborted, so it stops at its next clip while the caller -- which has the course open and a live signal -- is told the work is done, and an effect replayed as mount, cleanup, mount adopts nothing at all. A later caller now waits for the uncancellable tail and scans again, which costs a lookup on a course that has nothing left and finishes the clips the abort cut off on one that does. One attempt at an element now reports both facts its callers need instead of a bare boolean: whether the store refused it for room, and whether bytes actually reached the store. Leaving a course clears the task table, so a retry that landed afterwards read "no failed task" as success and deleted the row holding the only copy of the media. Nothing is inferred from that table any more. Reading the localStorage property can throw where storage is denied by policy, typeof included, so the availability check moved inside the guard: this metadata is best-effort, and a rejection here strands a generation pass that has already enqueued its tasks. A retry is never blocked by the per-course "store is full" marker, but a retry that is refused again re-sets it, and adoption now reads and writes the same marker rather than issuing one refused upload per clip on every load. The two canvas element renderers and both thumbnail renderers show the reason beside the Retry, so a full store does not look like an ordinary failure. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(media): probe a full store instead of standing down, and pair notices with a Retry Narration adoption was given both halves of the per-course "the store is full" marker last round: it stood down when the marker was set, and it set the marker when its own upload was refused for room. Those halves are only safe together if something can lift the marker, and for adoption nothing could. It has no affordance of its own, it stood down before reaching its own clear, the media pass returns before its marker gate when there is nothing to generate -- so a narration-only deck, or one whose slides are already satisfied, painted no storage-full element and offered no Retry -- and narration generated rather than adopted allocates directly rather than through the media commit. The course's cached narration was then lost for good, where before it converted on the first load after the ceiling was raised. The gate is a probe now. A marked course attempts exactly one clip per load: refused, it stops and the marker stands, which costs what standing down cost; stored, it lifts the marker and finishes the course. Adoption spends no provider money, so the whole cost of probing a store that is still full is one refused upload. Generated narration lifts the marker too. The three surfaces that gained a failure notice last round drew it for any failure with a reason, including the one refusal that is reachable without server-backed persistence, so a browser-only deck painted something it had not painted before. The notice is drawn beside a Retry and nowhere else, which is what it was added for and what leaves browser-only output unchanged. Both are now asserted through the render harness the surface matrix already had. A caller arriving while a rescan is queued shares it rather than appending another. One rescan converts whatever the run in flight left and every later one would find an allocated id on every action, so a chain bought nothing and turned a single stalled upload into a course that never adopts again. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(media): treat a refusal for room as a fact about one clip, not the deck The asset store checks each write against the headroom it has left, so a store that refuses a long opening clip can still hold every short clip behind it. Narration adoption assumed the opposite: it broke the deck at the first refusal and then re-attempted that same first clip on every later load, because the document names it first. A deck whose longest clip exceeds current headroom therefore never converted the clips that would have fit, with no affordance to recover it -- the state the probe was introduced to remove, reached through a narrower door. An unmarked load now attempts every clip, skipping the ones that do not fit, and remembers the condition only if the load ends with clips it still could not store. A marked load spends its single upload on the smallest clip left rather than the first one named: that is the clip that answers the question the marker asks, because if the smallest does not fit nothing does. The media pass keeps stopping at its first refusal, and for a reason adoption does not share -- every element it attempts costs a provider call. A rescan several callers share took the newest caller's signal, and the newest caller is not necessarily the one still there: a surface that opened a course and closed it again would stop work a surface still showing that course was waiting for, and that surface is latched, so it would never ask again. The shared run now takes a signal that is aborted only once every caller has left. The comment claiming the shared rescan contains a stalled upload was wrong -- the rescan is chained off the run in flight, so a stalled upload leaves every caller pending exactly as a chain would. It claims the bounded queue it actually provides, and the stall is recorded as a limitation. The failed-state containers took their stacking classes unconditionally, so markup differed in browser-only mode even though nothing moved on screen. Those classes are applied only when there is a notice to stack, and the tests assert the exact class attribute rather than a substring. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(media): stop narration adoption writing the media pass's store-full marker The marker means "do not call a provider for this course". A path is entitled to write it only if its own refusal cost a provider call, and narration adoption's refusals cost nothing: it uploads bytes this browser already holds. The store also checks each write against the headroom it has left, so a clip that does not fit says nothing about whether a slide's image would. Adoption was writing it anyway, and one over-long narration clip was therefore enough to stand a course's entire image pass down on every later load -- on a store that had just accepted adoption's other clips. The author could still recover each element by hand, every load, for ever. Three rounds of narrowing this seam produced a finding each time, so it is removed rather than narrowed again. Gone: the marker read, the single-clip probe, the smallest-clip selection, and the up-front read of every row into an array -- which also retires a sampled-then-stale flag and the retention of a whole deck's blobs for the length of a run, and returns the loop to streaming one row at a time. Adoption's rule is now that every load attempts every clip it holds, once; any failure skips that clip and the load continues. The noise the coupling was meant to avoid does not arise, because after the first load the clips still outstanding are exactly the ones that did not fit -- normally none, or one. A successful write still clears the marker, and that is a different kind of statement: a write that went through is a fact this run established, where a refusal is an inference about what some other write would cost. For a course whose media needs nothing, adoption and generated narration are also the only paths that can establish it. The failure module still documented the deck-wide premise this contradicts. It now says what is true: the check is per write, and the media pass stops the deck as a judgement about cost rather than about certainty. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(media): bound a full store's cost from the store's own arithmetic Removing the store-full marker from narration adoption removed its bound too, and the code then asserted the bound was unnecessary. It is, on a store with room for most of a deck. On the store the whole mechanism exists for -- the ceiling reached, nothing fitting -- the outstanding set after every load is the entire deck, so a thirty-clip course posted thirty full blobs on every load, indefinitely. Each of those is not a cheap refusal: the bytes are uploaded, the server hashes the whole payload, and only then takes a per-principal lock and sums every entry that principal owns before saying no. The bound needs no flag, no key and nothing carried between loads. The store asks whether `used + addedBytes` exceeds the ceiling, and `used` only grows while a run is uploading, so a clip refused for want of room implies every clip at least that large is refused for the rest of that run. The run keeps the smallest size it has been refused and skips anything no smaller without uploading it; a smaller clip is still attempted, because it may fit. A deck the store refuses entirely now costs one upload per successive size minimum instead of one per clip, and a deck it has room for costs nothing extra, because nothing is refused. Only a refusal for room lowers the bar: a dropped connection says nothing about how much room there is. The deck-wide certainty premise the failure module retracted last round still stood verbatim at the site that implements the stand-down. Both copies now say the same thing: the check is per write, and the pass stops the deck as a judgement about cost rather than about certainty. The comment on adoption's marker clear now names its price. Narration of a few hundred bytes fits in headroom an image does not, so a proven write can let the next pass buy one more image that is refused again -- bounded at one, and the price of the alternative being a course whose media never generates again. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * docs(media): state the adoption bound exactly, and stop three comments describing the old rule The comment introducing the in-load bound gave its cost as "at most a handful, and the first load pays the most". Neither clause is a property of the rule. A clip is skipped only when something no larger was already refused, so a fully-refused deck costs one upload per successive size minimum in document order: one when the clips grow, about ln N for an arbitrary order, and one per clip when they only shrink -- a long opener followed by terser lines is exactly that shape. And no load is cheaper than the first, because the bound resets per run and a refused clip stays outstanding. The comment now says that, and points at what would make it exactly one for any ordering: the store returning its remaining headroom in the refusal's existing details channel, which the server leaves empty today. Two other comments still described the previous rule -- "attempts every clip it holds, every load" -- one of them twenty lines above the paragraph that introduces the bound, in the same block. Both now say what the code does. The bound's soundness is worth stating where a maintainer will look for it: quota is charged at full length with no discount for a duplicate, the sum it is checked against joins entries to blobs so the collector cannot lower it, the check takes a per-principal lock before summing, and replace and delete are refused to every browser. Nothing a run can do makes room appear inside it. One test installed a row implementation and replaced it wholesale a few lines later, so the first was dead and the survivor dropped the text the first clip's import-shaped key needs for the ownership rule -- it passed on the coincidence that the fixture's default text is the action's. Merged into one. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(media): keep a Retry from re-buying parked media, and state the store seam once Five findings from an inline review. The standalone classroom route asked the ownership sidecar once per load and recorded only stage ownership when that ask failed. Every non-answer fails closed, so one transient 5xx left the genuine author with no resume, no Retry affordance and no legacy narration converted for the rest of the load, with nothing to change it short of a reload. The failure now records the fail-closed answer explicitly -- an answer an earlier load established must not outlive the failure that replaced it -- and an unresolved answer is asked for again, a few times over a few seconds. A real answer, however unwelcome, is final. A Retry could pay a provider for media the pool already held. When the bytes are stored and only the write-back fails in a way that keeps the allocation, it is parked and no local row exists, because that row is written only after a successful write-back. Retry now reads the parked queue exactly as the pass does and re-attempts the write-back: it re-keys the task done when the document takes it, leaves the entry parked when the slide still does not exist, and stays failed and retryable when the document refuses again. Object URLs a parked allocation owns are revoked when the entry is dropped. The commit path leaves them alone while the entry is parked, because it is then the only thing holding bytes this tab can render, so a course switch or a stage deletion was pinning the whole blob for the life of the tab. An entry a slide has already taken is left alone: the task table is displaying those URLs. The fallback lookup for cached bytes is a stage-scoped scan, and the keyed lookup misses for every row the commit path writes, so a pass was materializing and sorting the course's whole media table once per element. One scan per pass now, built on the first miss. It is sound and not merely cheaper: an element asks only for its own placeholder, and every row a pass writes carries the placeholder of the element that wrote it. "The store accepted a write, so it is not out of room" was enforced at three call sites under slightly different conditions, which made it a convention the next pool write path could silently break. It is stated once, in putAsset, for the course whose bytes it just stored. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com> Co-authored-by: 杨慎 <117187635+cosarah@users.noreply.github.com>	2026-09-11 19:38:08 +08:00
wyuc	dfebbcf33f	perf(classroom): speed up classroom loading (media hydration, sidebar thumbnails, media range requests) (#1276) ... * perf(classroom): defer non-priority media blob hydration off the load path Entering a classroom awaited the full mediaFiles restore — one object URL per restored image/video blob — before the loading gate opened. For video-heavy courses that is hundreds of MB of IndexedDB materialization blocking first paint. Split the restore into two phases: - The awaited phase now builds metadata-complete task entries but only creates object URLs for failed rows (none needed) and for media referenced by the scene the classroom opens on (persisted cursor, else the first scene). buildRestoredMediaTasks gains an optional shouldHydrateBlob predicate, defaulting to eager hydration so existing callers are unchanged. - Remaining blob-backed records hydrate in the background, chunked over requestIdleCallback (setTimeout fallback). Each deferred task stays 'done' — so generation resume never re-runs it — but carries no objectUrl yet, which the media resolution state machine already renders as a pending skeleton until the URL lands. Background hydration is guarded per record: a task that was replaced (classroom switch, regeneration, retry) or that belongs to another stage is skipped and its freshly minted URLs are revoked immediately. * perf(classroom): lazy-render slide thumbnails in the playback sidebar The playback scene sidebar mounted a full SlideCanvas for every slide scene the moment the classroom opened (and every off-screen video element opened a preload="metadata" fetch), because SlideThumbnail's existing visible prop was never passed. Extract the editor nav rail's near-viewport IntersectionObserver hook to lib/hooks/use-near-viewport.ts and gate the sidebar's slide thumbnails through it: only scenes within 200px of the viewport render the live canvas; the rest show SlideThumbnail's existing placeholder until scrolled near. The placeholder keeps the same box size, so gating never shifts layout. The shared hook now starts hidden instead of eager: with the previous eager-initial state, opening a long deck still mounted every canvas for a frame before the observer could flip off-screen items off. The observer's guaranteed initial delivery flips near-viewport items within a frame; the no-IntersectionObserver fallback (e.g. jsdom) defers to a microtask so the effect never synchronously re-renders. * perf(media): lazy image decoding and HTTP Range support for classroom media Renderer: BaseImageElement's <img> now carries loading="lazy" and decoding="async", so thumbnail-heavy surfaces (playback sidebar, editor nav rail, course cards) no longer fetch and decode every slide image up front. In-viewport images are unaffected — the browser fetches them immediately. slideToPng forces eager loading inside its permanently off-screen snapshot tree, where lazy images would otherwise never fetch and exports would capture blank slides. Server: GET /api/classroom-media/[classroomId]/[...path] now answers single byte-range requests with 206 Partial Content (Content-Range, Accept-Ranges, correct Content-Length), enabling progressive playback and seeking for hosted video/audio instead of downloading whole files. Suffix ranges are supported; unsatisfiable ranges get 416 with the full size; unsupported units or multi-range sets fall back to the plain 200 full-body response, which is always a legal answer. Existing caching headers are kept on every response shape. * chore(renderer): bump version to 0.1.4 for image lazy-loading change * fix(classroom): guard deferred hydration against restarted tasks and bound idle waits A deferred record is only ever 'done' without an objectUrl; a task that regeneration or retry restarted passes through pending/generating, so skip those instead of attaching stale persisted bytes. Also give the idle scheduling a timeout so a busy main thread cannot starve hydration. * fix(classroom): stop superseded deferred hydration before minting URLs A restore epoch captured at apply time now gates each idle chunk: loading another classroom or reloading the same one invalidates any older hydration loop, so it neither keeps scheduling work for an abandoned classroom nor attaches bytes read by an older load to a newer load's tasks. * fix(classroom): keep 416s uncached and classify element-keyed media as priority A 416 with public immutable caching can poison the media URL for later valid requests, so range errors now send Cache-Control: no-store. Priority classification also collects the opening scene's media element ids, since task lookup binds records keyed stage:<elementId> even when the slide slot carries a different opaque ref. * fix(classroom): tie deferred hydration liveness to the classroom load token The restore epoch only advanced when the next load reached apply, so an abandoned classroom kept hydrating during the next load's storage/network phase. Compose the epoch with the load's isCurrent (load token plus effect cleanup) so navigation stops the loop at the next idle boundary. * fix(classroom): classify legacy-recovered media before deferring it Legacy singleton video recovery assigns a placeholderRef only at the end of the task build, so a record keyed by an allocated id without placeholderRef was deferred even when it backs the opening scene's gen_vid_* element. Run a metadata-only build first to learn each record's effective ref and classify against it, keeping the first visible page's legacy video eager. * fix(action): wait for deferred video bytes before starting play_video executePlayVideo treated status done as immediately playable, but a deferred restore is done without an objectUrl: the renderer shows a skeleton, no <video> exists, and the later hydration never retriggers play, leaving the action stuck until the safety timeout. Readiness now follows the renderer's contract (only done-with-bytes is playable) at the initial check, the subscription exit, and the post-subscription recheck; the failed skip applies whether or not a wait happened. * fix(classroom): include the stage whiteboard in priority media refs The stage-level whiteboard stays open across standalone classroom switches, so its media can be visible before any scene is. Classifying it as deferred left visible whiteboard media pending behind idle hydration chunks.	2026-08-30 03:48:04 +08:00
wyucandClaude Fable 5	04621578de	release: OpenMAIC 1.0.0 — the agent workbench (#1228) ... * feat(storage): add an agent-session store with PG backend and layered contracts (#1163) * feat(storage): add agent-session store with PG backend and layered contracts * test(storage): avoid BigInt literals for pre-ES2020 root typecheck * fix(storage): close agent-session store review findings * docs(storage): align hook ordering and contention-probe claims with the code * ci: run on the agent-workbench integration branch * chore(storage): bump to 0.5.0 for the agent-session store * fix(storage): carry replay compaction across page boundaries * feat(agent): add the driver model contract and stage route dialect (#1165) * feat(agent): add the driver model contract and stage route dialect * fix(agent): validate route context windows and clarify dialect precedence * feat(agent): adapt the agent-session store and runtime foundations (#1167) * feat(agent): adapt the agent-session store and runtime foundations * feat(agent): resolve request owner identity via an anonymous cookie * docs(agent): document the opt-in compaction default and harden edge cases * feat(agent): add the background session runner (#1169) * feat(agent): add the background session runner * feat(agent): wire the runner into startup behind feature flags * fix(agent): stop clean interruptions from consuming the attempt budget * fix(storage): charge the attempt budget for abandoned leases but not clean parks * docs(storage): document the attempt-charging contract and decouple its tests * feat(agent): add agent session and owner event streams (#1170) * feat(agent): add agent session and owner event streams * fix(agent): close the session-existence oracle and document the owner seam * feat(agent): add agent session lifecycle routes (#1171) * feat(agent): add agent session lifecycle routes * fix(agent): validate session-create input and preserve the owner cookie on errors * refactor(storage): drop the unused active-stage API from the agent-session contract (#1174) * refactor(storage): drop the unused active-stage API from the agent-session contract Tools address stages explicitly on every call, so the store keeps no mutable session-level stage pointer. Removes resolveActiveStage and setActiveStage from the store interface, their PG implementations, the active_stage_changed lifecycle event, the session_active_stage owner event variant, and the contract tests pinning them. The active_stage_id column and the DDL check constraint stay untouched for schema compatibility. * chore(storage): bump @openmaic/storage to 0.7.0 for the contract removal * docs: document the agent runtime configuration surface (#1176) * fix(agent): repair orphaned and late tool results across interruption boundaries (#1180) * fix(agent): repair orphaned and late tool results across interruption boundaries A crash, shutdown, or provider failure can leave the durable transcript with tool calls that have no result, or with results ordered illegally for the provider. Three failure modes were fixed: - Orphaned tool calls: a run that died between an assistant tool-call frame and its result left a dangling call in the entry tree. Resume no longer synthesizes and persists receipts for it: interrupted results are a read-time provider view owned by a shared read-boundary repair, which returns the original array for a healthy transcript and never mutates the tree. - Late parallel results: a parallel tool can finish while pi unwinds an aborted assistant frame, leaving result(A), assistant(aborted), result(B) in durable order. Strict providers reject non-contiguous results, so the read-boundary repair moves existing results next to their owning assistant frame (in call order), omits incomplete unwind frames, and synthesizes receipts only for genuinely missing calls. - Interrupted calls at the write boundary: a call still in flight when the run winds down (shutdown, lease loss, cancellation, provider failure) had no receipt at all. The runner now tracks in-flight calls from their assistant frames and, before the terminal flush, appends an interrupted-result receipt for each still-orphaned call through the same attempt-fenced write chain, so a lease-stealing zombie never writes and the next claim sees a provider-safe transcript. * test(agent): pin the runner wiring for interruption-boundary tool repair * feat(agent): add neutral tool foundation libraries (#1184) * feat(agent): register a web_search tool on the session runner (#1185) * feat(storage): add a per-session URL trust gate (#1186) * feat(agent): add the skills system (#1189) * feat(agent): add the skills system (builtin directories and durable user skills) * fix(storage): serialize the user-skill quota check-and-insert per owner Two concurrent creates at the 50-skill boundary both counted 49 rows and both inserted (READ COMMITTED, no lock), overshooting the quota contract. The create transaction now takes a per-owner pg_advisory_xact_lock first, and the same-name idempotency check runs before the count check so an at-least-once retry of the create that committed as the owner's 50th row still returns its durable receipt instead of a quota error. The 23505 backstop is retained for writes that do not take the lock. * fix(agent): share unstorable-character validation and align skill lookup * feat(agent): add session materials and a fetch_url tool behind the URL trust gate (#1190) * feat(agent): add session materials and a fetch_url tool behind the URL trust gate * fix(agent): harden session material fetching * feat(storage): add an ownership scope to stage documents (#1191) * feat(agent): add material read and search tools (#1192) * feat(agent): add stage read and patch tools (#1194) * feat(agent): add page generation and deck editing tools (#1198) * test(storage): keep the PG contract suite order-independent (#1200) * fix(agent): revoke deleted-session URL authority and reject private ISATAP endpoints (#1199) * fix(storage): revoke deleted session URL authority * fix(ssrf): reject private ISATAP endpoints in strict fetches * chore(storage): bump to 0.11.1 for the session-URL authority fix * feat(agent): add roster and voice registration tools (#1201) * feat(agent): add folder organisation tools (#1202) * feat(api): add stage and material HTTP routes (#1203) * feat(workbench): add the client data layer (#1204) * feat(workbench): add the client data layer * docs(workbench): write the ported comments in English * chore(edit): remove the in-editor agent panel (#1210) * chore(edit): remove the in-editor agent panel * style: apply prettier formatting * fix(agent): report the runtime as unusable without a database (#1207) * fix(agent): report the runtime as unusable without a database * style: apply prettier formatting * feat(agent): add image, video and pptx import tools (#1211) * feat(workbench): add the agent chat surface (#1205) * feat(workbench): add the agent chat surface * docs(workbench): write the ported comments in English * fix(workbench): label the folder and rename tools on the timeline * fix(workbench): label the roster and voice tools on the timeline The reconciliation test iterates every tool the runner registers and requires a display label of its own. The roster and voice-clone tools (list_voices, set_roster, clip_audio, register_voice) reached the integration base with the roster/voice-registration tools but never gained presentation rows, so they fell through to the default branch and rendered their wire names. Port their rows from the reference implementation (labels and i18n keys verbatim) and extend the reconciliation allowlist with ROSTER_TOOL_NAMES and VOICE_CLONE_TOOL_NAMES, so a future tool cannot enter the product without a label. * feat(agent): add the material extraction lifecycle (#1212) * feat(storage): add material extraction lifecycle * feat(agent): execute queued material extraction * style: apply prettier formatting * style: satisfy prefer-const in the extraction runner * test: give material fixtures the extraction lifecycle fields The media-tools slice and the extraction lifecycle slice were each green in isolation but never compiled together: the lifecycle made derivedFrom and extraction required on AgentSessionMaterial while the media-tool fixtures predate them. * chore: remove stray task notes * fix(workbench): label the extraction lifecycle tools on the timeline * feat(workbench): add the workspace shell (#1206) * feat(workbench): add the workspace shell * docs(workbench): write the ported comments in English * i18n(workbench): align workspace keys across locales * fix(workbench): adopt the landed data layer and label the extraction tools - replace the sibling-slice seam stubs with the real data-layer modules - drop ambient declarations now shadowed by landed files - port timeline labels for the extraction lifecycle tools from the reference - align the new i18n keys across all locales * ci: retrigger * feat(api): folder routes, stage-meta viewer surfaces, and the material upload contract (#1215) * fix(storage): restore capability-based stage access * fix(api): bind document access to request owner * fix(agent): restore three-state stage access on the tool layer Port probeStageAccess and the three-state StageAccess (owned / foreign / missing / tombstoned) and gate every stageId-bearing stage tool on an owned probe, mirroring the reference per tool: - move_to_folder, rename_stage, read_stage_outline refuse a non-owned stage with the single not-yours message before touching the store. - The course/DSL toolset and the roster toolset are wrapped by withOwnerStageAuthorization: read_stage, patch_stage, grep_stage and every writer refuse a foreign stage with the same message and refusal shape. - Scene preview keeps its own probe and its own refusal text, and is registered beside the course toolset (never double-gated). - The runner injects one probe factory at the three call sites. Tests: the dsl cross-owner test premise (a foreign stage is readable by id) encoded an invented capability-read policy that the reference does not have at the tool layer; it now asserts foreign read/patch/grep are all refused while the owner still reads. Curriculum cross-owner assertions were already the reference's and now pass with the probes in place. * docs: correct per-file test counts in the fidelity report * test: fix type errors in stage-access fidelity test * test: adapt media-tool and gate suites to the owner-scoped store seam * feat(api): add owner-scoped course-folder HTTP routes Port the reference implementation's /api/folders family (list, create, rename, delete with ungroup/remove modes, and folder membership) onto the owner-bound document store, replacing its provider-based auth with the existing withRequestOwnerId / owner-scoped store seams. The storage package's folder store grows the pieces the routes need: DocumentFolder.order (schema column + max+1 assignment + ordering), renameFolder, deleteFolder(mode) with captured member ids, and setStageFolder(stageId, folderId | null) with idempotent un-filing. FolderNameError moves into folder-name-validation.ts (stage-storage re-exports it, keeping import sites intact). Every route gates on the configured agent runtime (plain 404 when off or unconfigured), keeps the reference's machine codes and envelopes, and is covered by gate tests plus a behavior suite. * feat(api): add stage-meta viewer surfaces for the classroom Port the reference implementation's viewer-facing stage state — can-edit / collected / published / generation-complete — on top of the stage-access base (stage_meta + tombstones). stage_meta gains published_at and generation_complete columns plus a stage_bookmarks table; the reference's deployment-specific origin/claimed_at columns are stripped. New gated routes: GET /api/stage-meta/[stageId] (per-viewer facts, 404 for absent/tombstoned, never returns the owner id), GET /api/stages/[id]/status, POST generation-complete / publish / unpublish (owner-only), POST /api/bookmarks. The resolver lives in lib/server/stage-access.ts. Wiring: a fetchStageMeta client with the reference's three-outcome contract, stage-store isOwner/isBookmarked/readOnly fields (upstream single-user defaults, no-op until the sidecar answers) plus setViewerAccess, the classroom apply path computing readOnly = !(isOwner || isBookmarked), the Stage editability gate, and a sidecar probe after each classroom load. A sidecar 'absent' answer keeps the editable default here because the classroom also serves local-only courses; server writes stay owner-enforced. * feat(api): port the reference material upload contract Rewrite POST /api/materials to the reference implementation's upload shape so the workbench uploader (uploadWorkbenchMaterial, which posts no session id and expects a flat 201 view) works unchanged: owner-scoped upload with mime normalization/validation (415), per-class size caps checked on the declared content-length and the streamed body (413), empty body (400), quota (429), sha256 reserve->store->finalize lifecycle with abandon on failure, flat { materialId, originalName, bytes, mime, extraction } 201, and an x-request-id echo. Adds the owner-scoped material library (owner_material table + quota + 24h lazy sweep, bytes in the host's asset registry as the neutral replacement for the reference's object-storage byte path) and the material cap configuration. The session-scoped GET list is left as-is; the reference's owner-material extraction worker is not ported (the branch's session-material extraction lifecycle already covers extraction). Gate tests now cover all 23 persistence routes across the three runtime env states; the materials behavior suite pins the new contract. * feat(media): add an optional local ffmpeg media extractor (#1213) Adds a local ffmpeg/ffprobe pipeline as a second media extraction provider behind the extractor registry, ported faithfully from the reference implementation: duration probing, keyframe-safe chunking, per-chunk ASR with timeout and deadline budgets, and timestamped transcript assembly. - Availability probing feeds the registry's candidate selection: the provider simply is not a candidate when ffmpeg/ffprobe are absent. - With neither ffmpeg nor a cloud provider configured, extraction fails with an actionable message naming both enablement paths. - Media materials route through the same extraction lifecycle and lease fence as documents; no parallel queue. - Tests inject the executable resolver so the missing-ffmpeg path is the default-tested one; the real pipeline test is skip-if-unavailable. - @openmaic/storage 0.13.0 -> 0.14.0 (media routing in the material lifecycle surface). * feat(storage): per-scene monotonic revisions via database triggers (#1214) * feat(storage): per-scene monotonic revisions via database triggers Restore the reference implementation's freshness granularity: a per-scene monotonic revision maintained by database triggers, so every writer (HTTP routes, agent tools, jobs, manual SQL) bumps it without application cooperation. - Companion revision tables + trigger functions in the storage package's idempotent schema bootstrap, with the lock-order invariant, pg_notify wakeup and the suppression switch for batch writers. - ensureDocumentSchema gained a dollar-quote-aware statement splitter. - The freshness and manifest routes serve per-scene revisions. - Mutation-verified: dropping the triggers turns the revision tests red. - @openmaic/storage 0.13.0 -> 0.14.0. * fix: forward the freshness manifest through the owner-bound store * feat(workbench): add the Pro entry points and preserve the mode-transition semantics (#1208) * feat(workbench): add the Pro entry points * feat(workbench): preserve Pro mode transition semantics * fix(workbench): drop ambient declarations shadowed by landed slices * fix(workbench): drop ambient declarations shadowed by the landed shell * feat: port workspace shell sibling modules Port the 16 leaf modules the Pro workspace shell imports but that were only ambient-declared, replacing the compile-time bridge with real implementations adapted from the sibling-slice reference: pure workbench helpers (session title, rail tab, course-chat bootstrap, created-course tabs, course-tabs memory, workspace navigation, pane navigation, pro-edit sizing, existing-course minting, first-message session), the neutral brand context and course-rename server API, the server-action session delete, the home discovery hook, the classroom pane host with its load-policy leaf, the theme toggle and floating-layer owner, plus the floating-layer-owner wiring the dialog/dropdown/tooltip portals stamp. Also add the workbench-shell locale copy for all 12 locales, port the reference tests for the ported modules, and drop types/workbench-sibling-slices.d.ts now that every declaration has a real implementation. * docs: keep ported comments in English and deployment-neutral * docs: announce 1.0.0 and refresh the feature overview (#1216) * docs: announce 1.0.0 and refresh the feature overview * docs: finalize 1.0.0 README after feature merge * fix(agent): control-plane routes answer 404, not 500, without a database The agent control-plane routes gated only on the runtime flag, so an enabled-but-unconfigured deployment (flag on, DATABASE_URL empty) answered 500 from a store that cannot connect. Gate them on the configured check instead, matching the stage/material routes: the whole surface is cleanly absent until both the flag and the database are present. The status probe keeps reporting both bits. * test: mock both runtime gate exports in the control-plane route suites * fix(agent): abort in-flight TTS on cancel and bound each provider request with a timeout (#1217) The generate_tts / scene-tts path checked the runner's AbortSignal between actions but never created the provider HTTP requests with it, so a session cancel left a hung synthesis fetch in flight until a restart repaired the tool result. Thread the signal end-to-end: TTSModelConfig carries an optional signal, generateTTS combines it with a per-request timeout (TTS_REQUEST_TIMEOUT_MS, default 30s, ported from the reference runtime's TTS bounds) via AbortSignal.any, and every provider fetch (openai, azure, glm, qwen incl. voice-clone + audio download, voxcpm, minimax, doubao, elevenlabs, lemonade) is created with that signal. A timeout now fails the tool call with TTSRequestTimeoutError (a clear retryable error) instead of wedging the session; a caller cancel propagates as the interruption so the runner settles the session as cancelled without a restart. Tests: hung-provider simulation rejects at the timeout with the retryable error; abort mid-flight aborts the captured request signal and surfaces the interrupted shape; removing the signal wiring makes the abort tests fail (red), restoring them turns green. * fix(workbench): PG-mode home listing via owner stages; keep the interrupted terminal course card (#1218) Finding 1: with server persistence on, listStages resolved to the generic GET /api/persistence/documents listing, which the capability model deliberately answers 403 FORBIDDEN_DOCUMENTS for (reads by id, listings owner-only). The home/workspace library now lists through the owner-scoped GET /api/stages surface (same anonymous-owner cookie the workbench uses) when server persistence is enabled; the server-side 403 is untouched. Finding 2: a run interrupted (session_interrupted) and repaired (session_resumed) that ends cancelled before agent_end stranded its pending classroom sightings, so the timeline's terminal card lost the course the answer produced. session_end (cancelled) now flushes the pending sightings into the same course card set agent_end paints, before the stopped caption. * chore(workbench): remove the bookmark concept and the saved-courses drawer (#1219) * chore(classroom): remove the bookmark ('collected') concept entirely The stage-meta viewer port introduced a bookmark surface (stage_bookmarks table, POST /api/bookmarks, the isBookmarked sidecar field, and a readOnly rule that let a saved course stay editable). The product has no such concept, so remove it as a closure: - delete the /api/bookmarks route and the stage_bookmarks table plus its query helpers from the persistence bootstrap - drop isBookmarked from GET /api/stage-meta/[stageId] - simplify the classroom read-only rule to readOnly = !isOwner across the sidecar client, ownership signal, classroom load, stage store and the classroom page - keep publish/unpublish, generation-complete, isOwner and isPublic exactly as they were - update the gate and stage-meta route suites and the README mentions The workspace rail's Bookmark glyphs and comments describe the upstream saved-courses (favorites) section, which is driven by isOwner and renders no collect affordance; they are kept as unrelated homonyms. * chore(workbench): remove the saved-courses drawer UI The first pass removed the bookmark data model but kept the rail's "Saved courses" drawer, judging it a separate surface driven by `isOwner === false`. The home/workspace listing is owner-scoped, so that flag can never occur: `allSaved` is permanently empty and the drawer (plus the collapsed-rail Bookmark mini-button) is a dead affordance. Remove it: the SavedDrawer component and its mount, the savedOpen / savedSection state, the allSaved / matchedSaved derivations, the 'saved' variant of the course-list renderers, the mini Bookmark glyph, the drawer-only CSS, and the drawer's i18n keys from all 12 locales. The courses tab is now exactly one folders tree. The authored/favorites split in workspace-tree.ts goes with it; the tree module no longer reads `isOwner`. The discovery course type keeps the field — the shell still reads it for read-only gating. Upstream has no collect concept; the drawer could only ever render empty here. The reference implementation HAS this drawer (its favorites come from its account system), so this removal is a deliberate upstream product decision, not a fidelity bug. * fix(workbench): restore the attach entry, add the rail settings entry, pin all three entry points (#1221) * fix(workbench): restore the composer attach entry by gating it on the live runtime The AttachButton's rollout probe read a `materialsEnabled` field that this branch's /api/agent/runtime never answers (the materials routes gate on the runtime itself, like the stages), so the gate could never pass and the attach button never rendered — the Pro launch and chat composers showed only the @-mention and enhance glyphs. Substitute the field with the runtime's `enabled` value, which IS the upload action's precondition: POST /api/materials answers 404 whenever it is false, so the render condition now equals the action precondition (no dead button). The button's label (`proMode.attach`) is a user-visible string that becomes visible again; port the reference implementation's own translations verbatim into the 11 locales that still carried the Chinese copy. * feat(workbench): add the settings entry to the rail's bottom-left cluster The reference's rail foot carries a cluster of utilities (its saved-courses drawer, the language switcher, the display toggle). This branch removed the drawer — it could only ever render empty here — and the product decision is to fill that freed spot with the settings entry. Add a settings trigger to the foot cluster (expanded rail, beside the language and display toggles, and on the collapsed strip) and mount the model/provider SettingsDialog in the rail, wired to the trigger. It is the same dialog the classic home opens from its header pill; the workspace had no settings entry of its own, so nothing is duplicated within a surface. * test(workbench): pin the restored upload, attach, and settings entry points Covers the three restored entry points: - the courses-tab upload control: rendered beside the course name filter, wired to the discovery hook's ZIP import trigger, disabled while an import runs, and gated by the same condition as its action (the courses tab); - the composer attach control: an actual render of AttachButton under both probe answers (visible when the runtime says the upload path is live, hidden otherwise), its mounts in the launch and chat composers, the branch's runtime-field substitution in the probe, and the reference's own `proMode.attach` copy in all 12 locales; - the settings entry: the trigger in the rail's foot cluster (expanded and collapsed), beside the language and display toggles, opening the SettingsDialog the rail mounts. * chore(config): the Pro workbench flag implies the MAIC Editor gate (#1223) A workbench build without the editor toggle has no way to edit a course: enabling NEXT_PUBLIC_PRO_WORKBENCH_ENABLED while forgetting NEXT_PUBLIC_MAIC_EDITOR_ENABLED produced exactly that split-brain bundle. The workbench IS Pro mode, so its flag now implies the editor gate; the standalone flag remains for deployments that want the classroom editor without the workbench. Documents both flags in .env.example. * fix(agent): wake SSE tails and the runner on durable deltas (streaming fidelity) (#1222) The Pro workbench chat did not stream: the session/owner SSE routes polled the durable event log on a 5s/30s clock with no wakeup, so message_update deltas (written at 150ms cadence) reached the browser in poll-sized blocks and the thinking strip only mounted after the whole reasoning text had accumulated. Port the reference's LISTEN/NOTIFY delta path: - storage: add in-transaction wake hooks (onSessionEventAppended, onOwnerEventAppended, onCancelRequested) so a host queues pg_notify in the same transaction as the durable append; align readEventsAfterForReplay to rank the bounded page so the first delta after the cursor is always kept (the live tail can never starve). Bump @openmaic/storage to 0.18.0. - app: port the process-wide event-notify bus (dedicated LISTEN client, self-check probe, reconnect backoff; notify through the storage transaction surface), wire the store hooks, subscribe both SSE routes before the initial read with the reference's initializing gate, and give the runner one {kind:'session'} subscription whose wake runs the cancel check and the message drain. Polls stay as the lossy-NOTIFY backstop. - lifecycle: start/stop the bus from instrumentation. Tests: storage hook + compaction contract; route wakeup latency; runner wakeup wiring with a fake agent; bus unit tests; PG contracts proving a real append wakes the routes and a live SSE route forwards a message_update on the wakeup, and that a rolled-back append never wakes. Also fix the pre-existing park-attempt-budget PG test TRUNCATE (missing CASCADE against newer FK tables). * fix(storage): asset writes self-deadlocked against pooled PostgreSQL (#1225) * fix(storage): refuse the non-transactional byte-write deadlock configuration A byte store whose plain write() runs on its own pooled connection cannot be invoked from inside a registry write transaction: after the transaction has claimed the blob-row lock, that write blocks on the lock the transaction just took while the transaction waits on the write - a self-deadlock PostgreSQL cannot detect (one side is idle in transaction). There is no lock-safe ordering for such a writer: bytes must be written after the row claim (writing before it lets the collector delete the bytes while the upsert waits), and any second-connection write after the claim is the deadlock. The configuration is therefore detected and refused: - AssetByteStore gains writesOutsideRegistryDatabase?: true, declaring that the layer's plain byte operations cannot contend for the registry's row locks. - PgAssetStore refuses put()/replace() up front (and defends coordinatedWrite) when the byte store has no writeWith and does not declare the flag, throwing a clear configuration error before any row is claimed. - The collector mirrors the guard on its delete path (deleteWith or a declared out-of-registry layer, else a configuration error). - The object store declares the flag (its out-of-transaction write remains legitimate); the in-registry PostgreSQL byte column provides writeWith / deleteWith instead. - Write transactions (put/replace/remove) set SET LOCAL lock_timeout = 30s so any future lock-contention variant fails loudly instead of hanging. Bumps @openmaic/storage to 0.18.0. * fix(persistence): forward the transactional byte methods through the lazy asset byte-store wrapper The no-bucket case of lazyAssetByteStore returned a bare { write, read, delete } and dropped writeWith/readWith even though the underlying PgAssetByteStore has them. The registry's hasTransactionalWriter duck check then failed and put() fell back to the byte store's own pooled connection, which blocks forever on the blob-row lock the registry transaction just took when the bytes live in the same PostgreSQL - the production self-deadlock. The no-bucket layer is statically PgAssetByteStore, so its transaction-pinned methods are forwarded eagerly (typed against the real signatures via PgForwardedByteStore). The bucket case keeps its lazy-probing semantics: no transactional writer exists there, the signed-URL method stays absent or lazy exactly as documented, and the wrapper now declares writesOutsideRegistryDatabase so the registry may run the plain write inside its transaction. New tests pin the wrapper's transactional capability red-to-green and assert put()/resolve() route byte traffic through the transaction-pinned queryable. * fix(home): cap the generate-prep ingest drain at 3s so Generate never waits the full server budget The classic home flow's Generate click drained in-flight ingests for the full 15s server budget. Cap the wait at GENERATE_DRAIN_CAP_MS (3000ms, documented as a UX bound) and reuse the existing timeout fallback: sources that miss the cap proceed on the legacy byte path and each late-resolving id is released. * chore(storage): bump to 0.19.0 over the concurrently landed 0.18.0 * fix(agent): bound every tool call with a timeout; never resurrect a cancelled session (#1226) * fix(agent): bound every tool call with a global timeout and settle it on cancel A tool await that neither resolves nor rejects wedges the session forever: the lease keeps heartbeating and the driver never reaches its next cancel checkpoint. Race every tool execution (in buildAgent) against a hard budget (OPENMAIC_AGENT_TOOL_TIMEOUT_MS, default 10 min, per-tool overrides for known long runners) and against the caller's AbortSignal, so even a signal-ignoring await cannot keep a cancelled session running. On timeout the call rejects with AgentToolTimeoutError; the agent loop turns the rejection into a structured error tool-result the agent can retry or proceed from, and the abort signal is delivered to the tool's in-flight work through a derived controller. Zombie-tool updates after settlement are dropped. * fix(storage): never re-lease a cancel-requested session; settle it as cancelled on claim The claim scan treated a session with cancel_requested_at set as a normal claim candidate: after a restart it re-leased the same session for attempt N+1 and resumed generating despite the pending cancel. claimNextSession now settles such candidates as cancelled under the claim lock (status cancelled, attempt reset, lease and cancel request cleared, terminal session_end event and owner projection) instead of leasing them, then keeps scanning. Bump @openmaic/storage to 0.18.0. * docs: takeaway-style 1.0.0 announcement with bilingual guide links The 1.0.0 head is now a short takeaway block — badge links to the official user guides (English and Chinese), five one-line highlights, and pointers into Features and the workbench setup section — instead of six dense paragraphs. The detailed provider-neutrality and freshness notes move into the Features workbench section, phrased database- neutrally (the announcement no longer names a specific database). Release date corrected to August 27. * fix(workbench): restore editor chrome, mode transition, streaming, materials, mentions, folders (#1229) * fix(workbench): wire workspace folder routes * fix(editor): restore reference workbench chrome * fix(workbench): persist composer materials and course refs * fix(workbench): preserve live reasoning frames * fix(persistence): back off failed streaming saves * chore(workbench): retire stale slice seams * test(editor): cover element pin layer * chore(storage): bump to 0.21.0 for the user-message ref/material fields * chore(editor): translate ported code comments to English * fix(agent): fence durable tool writes and consume cancel requests atomically (#1230) * fix(agent): enforce provider force-off in agent tools and scrub vendor identity from tool results (#1231) * fix(materials): serialize per-owner quota reservations and make crashed uploads reclaimable (#1232) * fix(editor): resolve dock-bar i18n keys, remove dock height drag, wire element referencing (#1233) * fix(workbench): send the opening session message exactly once with refs intact (#1234) * feat(editor): port timeline TTS preview single-flight and voice-all state latching (#1235) * fix(media): restore the reference classic media chain (#1236) * fix(import): adapt imported PPTX canvas size so decks render without overflow (#1237) * fix(editor): complete element referencing — renderer DOM contract and GenUI picking aligned with the reference (#1238) * test(providers): reconcile the provider-config vendor-token debt count after the main merge The integration line's AK/SK fallback for the managed document provider adds occurrences that main's allowlist snapshot predates. Same mixed-composition debt category the group already documents; no new vendor behavior. * test(providers): reconcile vendor-token debt counts with the integration line The main-merge brought main's neutrality-guard snapshot next to integration features it predates (media-extractor fallback chain, local voice-profile deletion semantics, the enabled-TTS helper). Same debt categories the guard already documents; counts updated to the guard's own tally and two grouped entries added. No new vendor behavior. * fix(agent): carry reasoning through the completions dialect so the thinking strip renders (#1239) * feat(skills): add Feynman and spiral curriculum methods (#1240) * feat(agent): port missing reference tools and skills (parity audit) (#1241) * feat(media): retire asset-registry wiring; media and materials follow the reference byte model (#1242) * fix(classroom): center adapted canvases in the stage and send back navigation home during generation (#1243) * feat(settings): skill management with real list, download, delete, and upload (#1244) * feat(settings): skill management section with real list, detail, and zip download * feat(skills): owner skill delete and upload across storage, API, and settings * fixup! feat(settings): skill management section with real list, detail, and zip download chore: neutralize a reference note in the settings header comment * fix(media): persist origin-independent classroom-media references from the agent runtime (#1245) * feat(editor): float the insert toolbar in the outer frame with collapse (#1246) The insert strip was bounded to the slide card, so it could only ever sit on top of slide content: the card's overflow clipped it and it could not be parked in the padding beside the slide. Move it into the studio frame the element picker's panel already roams (CanvasOverlayPortal + the frame selector), so both canvas overlays share one bounding container and their handles behave the same. While picking, the strip rises over the picker and goes inert, which is the z-order CANVAS_OVERLAY_Z already documents. Add a fold beside the grip: the chevron collapses the strip to that grip row and back, with the buttons unmounted rather than hidden. The fold is session-local state owned by EditShell, next to the drag offset, so a surface swap keeps it; nothing is persisted. Expanding a strip parked at the bottom edge re-clamps through the same bounds rule the keyboard move uses. Co-authored-by: Claude Fable 5 <noreply@anthropic.com> * fix(workbench): align the chat timeline's left edge with the composer (#1247) * fix(agent): fence session claims while an ask_user question is outstanding (#1248) * fix(agent): settle-time rescue tracks real delivery instead of a count offset (#1249) * fix(persistence): migrate owner_material to oss_key and drop legacy asset_id (#1250) * docs(readme): surface the 1.0.0 user guide badges at the top (#1253) * fix(workbench): show newly created folders in the sidebar without reload (#1254) * docs(readme): add the release version prefix and drop the opt-in framing * fix(workbench): single-source the chat gutter so timeline and composer share a left edge (#1255) The transcript and the composer each established their own column: their own `px-*` gutter and their own `mx-auto w-full max-w-*` centering wrapper. Equal padding values were never enough, because the two columns are centered inside different containing blocks — the transcript's is a scroll container, whose content box is narrower than the composer footer's by the scrollbar's width: transcript text left = pad + (pane - 2*pad - scrollbar - measure) / 2 composer box left = pad + (pane - 2*pad - measure) / 2 The padding cancels out of the difference and what remains is `-scrollbar/2` at every padding value, so the transcript sat half a scrollbar to the left of the composer and tuning the two paddings against each other could not move it. The column is now established once, by the nearest common ancestor of both (`chatColumn`), and the scroll viewport and the composer footer are siblings inside it that add no horizontal inset of their own. The cap carries the gutter on top of the 760px reading measure, so the text column keeps its width. The handed-over question row drops the padding that indented it past the agent's prose; framed rows keep their own inner padding, which is what a card's border sitting on the column edge means. Co-authored-by: Claude Fable 5 <noreply@anthropic.com> * fix(workbench): lock pane-embedded classroom to edit mode (#1256) The workspace right pane painted the full learning chrome — speed control, play button, learner avatars, mic bar — for a course the agent had just created, then flipped to edit once the first scene landed. resolveStageChromeMode treated playback as the DEFAULT branch for a hosted classroom, so every shortfall fell into it: a course whose tab opens at stage_link time has no scenes yet, so currentSceneId is null and isHostedSceneEditable is false. A folded pane parked the playback root behind the fold and cross-faded it out over the pane on unfold, and a failed editor chunk dropped into playback permanently. Lock it at the pane instead of defaulting per entry path: - WorkbenchPanelProvider — the single element that mounts a classroom into the workspace — publishes editPinned (visible && !playback). Every entry path passes through it, so none of them decides. - The hosted resolution can no longer degrade to playback. Start Learning (workbenchLearning, new input, split out from pane visibility) is the one door; everything else resolves between the neutral loading shell and edit. - Stage's chrome dispatch is exhaustive on chromeMode, so the playback root is no longer the else-branch of a condition about the current scene. No flicker: chromeMode is resolved during render, and preloadEditor now answers synchronously (isEditorPreloaded) so a remount with the chunk already registered paints edit on the first frame. A failed import is no longer cached forever, so the lock cannot strand the pane. Standalone classrooms keep their stored mode unchanged. --------- Co-authored-by: Claude Fable 5 <noreply@anthropic.com>	2026-08-27 19:26:25 +08:00