Enforce explicit WebGL book playback timeline

scripts/check-webgl-book-lab.js

@@ -143,7 +143,7 @@ const checks = [
     ['sentence queue keeps current 3D page prep immediate while future lookahead yields cooperatively', /if \(!options\.immediate\) \{[\s\S]*requestIdleCallback[\s\S]*timeout: 80/.test(sentenceQueueSource) && /prefetchAhead\(maxLookahead = 6/.test(sentenceQueueSource)],
     ['pagination can prepare future spreads without activating visible spread', /preparePendingBlock\(block = \{\}, options = \{\}\)/.test(bookPaginationSource) && /options\.activate !== false/.test(bookPaginationSource) && /includeUnrenderedHistory/.test(bookPaginationSource)],
     ['pagination preserves active inline style tags for texture lines', /getActiveStyleTags/.test(bookPaginationSource) && /activeStyleTags/.test(bookPaginationSource) && /updateStyleTagStack/.test(bookPaginationSource)],
-    ['texture renderer stores prepared reveal plans in the shared texture store', !/preparedRevealCache/.test(textureRendererSource) && /rememberPreparedRevealPlan/.test(webglPageCacheSource) && /takePreparedRevealPlan/.test(textureRendererSource) && /publishPreparedReveal/.test(textureRendererSource) && /hasPreparedRevealBlock/.test(textureRendererSource)],
+    ['texture renderer stores prepared reveal plans in the shared texture store', !/preparedRevealCache/.test(textureRendererSource) && /rememberPreparedRevealPlan/.test(webglPageCacheSource) && /takePreparedRevealPlan/.test(textureRendererSource) && /publishPreparedReveal/.test(textureRendererSource) && !/hasPreparedRevealBlock/.test(textureRendererSource)],
     ['webgl page cache is loaded through module infrastructure', /webgl-page-cache-module\.js/.test(loaderSource) && /super\('webgl-page-cache'/.test(webglPageCacheSource) && /reportProgress\(20, 'Opening WebGL page texture cache'\)/.test(webglPageCacheSource)],
     ['webgl page cache uses an isolated browser database without upgrading tts history state', /this\.dbName = 'webglPageTextureCacheDB'/.test(webglPageCacheSource) && /this\.dbVersion = 1/.test(webglPageCacheSource) && /this\.dbVersion = 3/.test(ttsFactorySource) && /this\.dbVersion = 3/.test(storyHistorySource) && !/webglPageTextureStore/.test(ttsFactorySource) && !/webglPageTextureStore/.test(storyHistorySource)],
     ['texture renderer hands completed page canvases to the single texture store without owning write queues', /webgl-page-cache/.test(textureRendererSource) && /cachePublishedPages/.test(textureRendererSource) && /storePageCanvas\(pageMeta, canvas, \{ persist: true, resident: true \}\)/.test(textureRendererSource) && !/schedulePageCacheWrite/.test(textureRendererSource) && !/pendingPageCacheWrites/.test(textureRendererSource)],
@@ -159,7 +159,7 @@ const checks = [
     ['webgl debug test hook awaits the same async page flip path', /startPageFlipForTest\(direction, options = \{\}\) \{[\s\S]*return startPageFlip\(direction, options\)/.test(source)],
     ['webgl debug test hook can deterministically finish an active page flip', /advancePageFlipForTest\(elapsedMs = normalFlipDuration \+ 16\)/.test(source) && /updateActiveFlips\(targetNow\)/.test(source)],
     ['sentence queue skips duplicate current-item 3D book presentation when reveal is cached', /isWebGLBookPresentationPrepared/.test(sentenceQueueSource) && /if \(!this\.isWebGLBookPresentationPrepared\(sentence\)\) \{\s*await this\.prefetchWebGLBookPresentation/.test(sentenceQueueSource) && /sentence\.webglBookPresentation = \{\s*prepared: true/.test(sentenceQueueSource)],
-    ['3D overflow reveal waits for timeline-owned page flip before activating future spread', /requiresSpreadTransition\(segment\)/.test(bookPlaybackTimelineSource) && /this\.requestPageFlip\(1, \{[\s\S]*targetSpread: segment\.targetSpreadIndex/.test(bookPlaybackTimelineSource) && /this\.activatePreparedSegment\(segment, sentence\)/.test(bookPlaybackTimelineSource) && /webgl-book:request-page-flip/.test(bookPlaybackTimelineSource) && /const targetSpread = Number\.isFinite\(Number\(detail\.targetSpread\)\)/.test(source) && /startPageFlip\(direction, \{[\s\S]*targetSpread/.test(source)],
+    ['3D overflow reveal waits for an explicit timeline flip plan before activating future spread', /requiresSpreadTransition\(segment\)/.test(bookPlaybackTimelineSource) && /this\.requestPageFlip\(1, \{[\s\S]*targetSpread: segment\.targetSpreadIndex/.test(bookPlaybackTimelineSource) && /this\.activatePreparedSegment\(segment, sentence\)/.test(bookPlaybackTimelineSource) && /BookLabDebug\?\.requestPageFlip/.test(bookPlaybackTimelineSource) && /requestPageFlip\(direction = 1, options = \{\}\) \{[\s\S]*return startPageFlip\(direction, options\)/.test(source)],
     ['texture renderer paints inline bold and italic styles', /getInlineStyleState/.test(textureRendererSource) && /updateInlineStyleState/.test(textureRendererSource) && /getCanvasFont/.test(textureRendererSource) && /segment\?\.style/.test(textureRendererSource)],
     ['webgl lab can preload page textures without swapping visible page material through texture store', /preparePageTexture\(side = 'left'/.test(webglPageCacheSource) && /takePreparedPageTexture\(side = 'left'/.test(webglPageCacheSource) && /renderer\.initTexture\(texture\)/.test(webglPageCacheSource) && /takePreparedPageTexture/.test(source) && !/const preparedPageTextures/.test(source)],
     ['webgl page text textures avoid mipmap generation', /function configurePageCanvasTexture/.test(source) && /texture\.minFilter = THREE\.LinearFilter/.test(source) && /texture\.generateMipmaps = false/.test(source)],
@@ -211,11 +211,13 @@ const checks = [
     ['webgl reveal clock follows absolute playback time and continues across page flips', /activeRevealBlockStarts/.test(source) && /state\.visualElapsedMs = Math\.max\(0, now - state\.startedAt\)/.test(source) && !/Math\.min\(revealFrameDeltaMs, targetFrameDurationMs\)/.test(source) && /prewarmFlipTextures\(1, targetSpread\)/.test(source)],
     ['texture renderer preloads every spread touched by an active reveal block', /preloadAdditionalRevealSpreads/.test(textureRendererSource) && /spreadContainsBlock/.test(textureRendererSource) && /this\.drawSpread\(spread, \['left', 'right'\], \{ phase: 'prepare' \}\)/.test(textureRendererSource) && /this\.activeAnimations\.has\(id\)/.test(textureRendererSource)],
     ['webgl visible spread state ignores future prepared publishes before flip', /spreadUpdate:deferred-future-unrendered/.test(source) && /incomingSpreadIndex > Math\.max\(0, Number\(bookPaginationState\.spreadIndex/.test(source) && /this\.drawSpread\(this\.currentSpread, \['left', 'right'\], \{ phase: 'prepare' \}\)/.test(textureRendererSource)],
-    ['3D overflow reveal preloads target spread before forced page flip', /createRevealDetail\(sentence, previewSpread, 'prepare'\)/.test(bookPlaybackTimelineSource) && /this\.textureRenderer\.prepareRevealBlock\(revealDetail, \{ phase: 'prepare' \}\)/.test(bookPlaybackTimelineSource) && /this\.prewarmSegmentTextures\(segment\)/.test(bookPlaybackTimelineSource) && /reason: 'timeline-preplay-spread-transition'/.test(bookPlaybackTimelineSource)],
+    ['3D overflow reveal preloads target spread before forced page flip', /createRevealDetail\(sentence, previewSpread, 'prepare'\)/.test(bookPlaybackTimelineSource) && /this\.textureRenderer\.prepareRevealBlock\(revealDetail, \{[\s\S]*phase: 'prepare'[\s\S]*publishEvent: false/.test(bookPlaybackTimelineSource) && /this\.prewarmSegmentTextures\(segment\)/.test(bookPlaybackTimelineSource) && /this\.assertSegmentReady\(segment, 'prepare'\)/.test(bookPlaybackTimelineSource) && /reason: 'timeline-preplay-spread-transition'/.test(bookPlaybackTimelineSource)],
     ['book playback timeline is loaded through module infrastructure', /book-playback-timeline-module\.js/.test(loaderSource) && /super\('book-playback-timeline'/.test(bookPlaybackTimelineSource) && /reportProgress\(100, 'Book playback timeline ready'\)/.test(bookPlaybackTimelineSource)],
     ['3D display playback is owned by book playback timeline', /book-playback-timeline/.test(uiDisplayHandlerSource) && /playWebGLBookSentence/.test(uiDisplayHandlerSource) && /timeline\.playSentence\(sentence\)/.test(uiDisplayHandlerSource) && /if \(useWebGLBookReveal\) \{[\s\S]*await this\.playWebGLBookSentence\(sentence\);[\s\S]*this\.markBlockRendered\(sentence\.blockId\);[\s\S]*return null;/.test(uiDisplayHandlerSource)],
     ['sentence queue lookahead prepares 3D book timeline segments', /book-playback-timeline/.test(sentenceQueueSource) && /bookPlaybackTimeline\.prepareSentence\(sentence/.test(sentenceQueueSource) && /timelineSegment: segment/.test(sentenceQueueSource)],
     ['book playback timeline prewarms texture window before prepared playback and flips', /prewarmSegmentTextures/.test(bookPlaybackTimelineSource) && /pageCache\.prewarmNavigationWindow/.test(bookPlaybackTimelineSource) && /this\.prewarmSegmentTextures\(segment\)/.test(bookPlaybackTimelineSource) && /await this\.pageCache\?\.prewarmNavigationWindow/.test(bookPlaybackTimelineSource)],
+    ['book playback timeline enforces resident page textures before prepared playback', /assertSegmentReady/.test(bookPlaybackTimelineSource) && /collectRequiredPageMetas/.test(bookPlaybackTimelineSource) && /this\.pageCache\.ensurePageTexture\(meta/.test(bookPlaybackTimelineSource) && /timeline-cache-readiness-failed/.test(bookPlaybackTimelineSource)],
+    ['3D reveal start is controlled by the prepared timeline instead of texture events', /sentence\.webglRevealController = \(\) => this\.startRevealForSegment\(segment\)/.test(bookPlaybackTimelineSource) && /startPreparedRevealAnimation\?\.\(segment\.blockId, \{[\s\S]*publishEvent: false/.test(bookPlaybackTimelineSource) && /PlaybackCoordinator: WebGL playback requires a prepared timeline reveal controller/.test(playbackCoordinatorSource) && !/document\.dispatchEvent\(new CustomEvent\('book-texture:reveal-block'/.test(methodBody(playbackCoordinatorSource, 'scheduleWebGLReveal'))],
     ['webgl lab delegates right-page reveal commits to timeline owner', /BookPlaybackTimeline\?\.ownsPageFlipCommit === true/.test(source) && /handleRevealCommittedForPageFlip/.test(source)],
     ['webgl reveal clock explicitly freezes during physical flips', /pageRevealFreezeAt/.test(source) && /state\.startedAt \+= frozenMs/.test(source) && /activeRevealBlockStarts\.set\(blockId, Number\(value\) \+ frozenMs\)/.test(source)],
     ['book playback timeline waits for right reveal only when current block is on right page', /getBlockRevealSides/.test(bookPlaybackTimelineSource) && /revealSides\.includes\('right'\) && this\.requiresRightPageFlipAfterReveal/.test(bookPlaybackTimelineSource) && /visual-completion:no-right-flip-wait/.test(bookPlaybackTimelineSource)],