Checkpoint: Removed "Open on AutoContent" button from explainer video player page (VideoPlayerPage.tsx). The button provided an external link to the AutoContent platform but was not needed in the user interface.

Checkpoint: Fixed Introduction lesson content order - Learning Objectives now appear before main content paragraphs.

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Checkpoint: Removed breadcrumbs and added hamburger menu to SharedCourseViewer header for cleaner mobile interface

Checkpoint: Removed breadcrumbs and added hamburger menu to SharedCourseViewer header for cleaner mobile interface

Checkpoint: Fixed mobile responsive issues causing horizontal overflow on mobile devices:

Checkpoint: Fixed SharedCourseViewer content order and responsive layout to match regular CourseViewer: - Added topic context header (title + description) on first lesson - Added topic video player before lesson content on first lesson - Fixed content order: Topic header → Video → Key takeaways → Main content → Learning objectives - Removed duplicate video section at bottom of non-introduction lessons - Fixed all JSX indentation issues in SharedCourseViewer.tsx - Updated todo.md to track mobile responsive fixes

Checkpoint: Fixed SharedCourseViewer mobile layout - sidebar now hidden by default on mobile with Menu/X hamburger toggle, overlay with backdrop on mobile, desktop shows ChevronLeft/Right sidebar collapse buttons

Checkpoint: Fixed shared course viewer: lessons were not loading because sharingRouter was using topic.id (numeric auto-increment) instead of topic.topicId (string identifier) when querying lessons and quizzes. Reverted main.tsx back to httpBatchLink and removed debug console.log statements.

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Add Course Sharing feature to PRD v4.4 and Technical Architecture v4.5

Checkpoint: Fixed mobile responsive issues causing horizontal overflow on mobile devices:

Checkpoint: Fixed SharedCourseViewer content order and responsive layout to match regular CourseViewer: - Added topic context header (title + description) on first lesson - Added topic video player before lesson content on first lesson - Fixed content order: Topic header → Video → Key takeaways → Main content → Learning objectives - Removed duplicate video section at bottom of non-introduction lessons - Fixed all JSX indentation issues in SharedCourseViewer.tsx - Updated todo.md to track mobile responsive fixes

Checkpoint: Fixed SharedCourseViewer mobile layout - sidebar now hidden by default on mobile with Menu/X hamburger toggle, overlay with backdrop on mobile, desktop shows ChevronLeft/Right sidebar collapse buttons

Checkpoint: Fixed shared course viewer: lessons were not loading because sharingRouter was using topic.id (numeric auto-increment) instead of topic.topicId (string identifier) when querying lessons and quizzes. Reverted main.tsx back to httpBatchLink and removed debug console.log statements.

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Merge remote changes, keeping local versions of auto-generated files

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Checkpoint: Fix unterminated string literal in shared/changelog.ts that was causing build errors. Changed escaped single quote to proper string.

Checkpoint: Fix unterminated string literal in shared/changelog.ts that was causing build errors. Changed escaped single quote to proper string.

Checkpoint: Course sharing feature: Complete implementation including shares table schema, dbShares.ts CRUD helpers, sharingRouter.ts with 5 tRPC endpoints (create, list, getForContent, delete, getPublicCourse), SharedCourseViewer page with sidebar navigation and all lesson types (text, introduction, summary, quiz, flashcard, audio/listen_learn, video, reflection, real-world examples), ShareCourseDialog component with link generation/copy/revoke/preview, Share button added to CourseLandingRedesign, /share/:shareId route registered in App.tsx, and 15 passing vitest tests.

update PRD v4.3, Technical Architecture v4.4, Roadmap v1.1 with recent features

Checkpoint: Course sharing feature: Complete implementation including shares table schema, dbShares.ts CRUD helpers, sharingRouter.ts with 5 tRPC endpoints (create, list, getForContent, delete, getPublicCourse), SharedCourseViewer page with sidebar navigation and all lesson types (text, introduction, summary, quiz, flashcard, audio/listen_learn, video, reflection, real-world examples), ShareCourseDialog component with link generation/copy/revoke/preview, Share button added to CourseLandingRedesign, /share/:shareId route registered in App.tsx, and 15 passing vitest tests.

Checkpoint: Updated project documentation to reflect recent changes: PRD v4.3 (video cancel with confirmation dialog, Listen & Learn on-demand audio, time estimate corrections, lesson type mapping fix), Technical Architecture v4.4 (ListenLearnAudioPlayer component, video cancel architecture, course creation change), Roadmap v1.1 (Sprint 1 completed features).

Checkpoint: Listen & Learn on-demand audio generation: removed auto-generation from course creation (3 places in courseRouterOptimized.ts), switched CourseViewer to use ListenLearnAudioPlayer (working on-demand component) instead of ListenLearnRedesign (mock data), enhanced generateListenLearnAudio endpoint with force param for regeneration and topic audio fallback for older courses, updated ListenLearnAudioPlayer regenerate button to pass force: true, added 13 passing tests.

Checkpoint: Add confirmation dialog before cancelling video generation. Uses shadcn/ui AlertDialog with two-step flow. Added 3 new tests for dialog behavior (14 total passing). Increased Vite chunkSizeWarningLimit to 2000.

Checkpoint: Add cancel/stop functionality for explainer video generation. Added video.cancelGeneration tRPC endpoint, cancel button UI, fixed TypeScript errors, and added 11 vitest tests.

Checkpoint: Add cancel/stop functionality for explainer video generation

Checkpoint: Update video generation snackbar message to show accurate time estimate: "Video generation started. This will take approximately 15 to 30 minutes." Changed from previous "1-3 minutes" in CourseExplainerVideoGenerator.tsx.

Checkpoint: Remove Next/Finish button from Quiz page navigation. Users can now navigate using keyboard shortcuts (Enter, arrow keys) and the Previous button. Updated CourseQuizViewer.tsx.

Checkpoint: Add 48px top margin to Lesson Notes Panel for better spacing. Visual edit applied to LessonNotesPanel.tsx.

Checkpoint: Remove PDF download banner and What comes next section from Topic Summary. Updated SummaryLessonRedesign.tsx, courseGeneration.ts, and courseGenerationOptimized.ts.

Update documentation to v4.2.2/v4.3.2

Checkpoint: Fix Real World Examples [object Object] bug in course generation. Fixed 3 code paths in courseRouterOptimized.ts and courseRouter.ts. Rewrote RealWorldExamplesRedesign.tsx parser.

Merge remote changes from GitHub

Update documentation to v4.2.1/v4.3.1

Update todo.md - Mark roadmap creation and documentation tasks as complete

Add comprehensive Roadmap v1.0 with Q1-Q4 2026 planning

Checkpoint: Fix Real World Examples outcome generation by updating JSON schema

Checkpoint: Update Real World Examples title styling

Checkpoint: Fix HTML tags appearing in Real World Examples content

Checkpoint: Update Course Wizard prompts to generate plain text instead of HTML

Checkpoint: Fix Real World Examples styling and content issues

Checkpoint: Fix HTML tags showing in Real World Examples content

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Update PRD to v4.2 - Fix topic media generation documentation

Update PRD to v4.1.1 - Correct video/image generation documentation

Checkpoint: Fixed Real World Examples page display issues by improving content parsing logic to handle AI-generated content format. Component now properly extracts case studies from markdown with ## headings or "Example N" patterns, displays them in alternating card layout with images, descriptions, outcomes, and tags. Falls back to raw markdown rendering if parsing fails.

Checkpoint: Fixed Real World Examples page display issues by improving content parsing logic to handle AI-generated content format. Component now properly extracts case studies from markdown with ## headings or "Example N" patterns, displays them in alternating card layout with images, descriptions, outcomes, and tags. Falls back to raw markdown rendering if parsing fails.

Checkpoint: Documentation updates: Updated PRD to v4.1, Technical Architecture to v4.3, created comprehensive tech stack summary, and reorganized todo.md into structured sections (Backlog, Todo, In Progress, Bugs, Done)

Update PRD to v4.1, add tech stack summary, update architecture to v4.3

Checkpoint: Documentation updates: Updated PRD to v4.1, Technical Architecture to v4.3, created comprehensive tech stack summary, and reorganized todo.md into structured sections (Backlog, Todo, In Progress, Bugs, Done)

Checkpoint: Checkpoint saved: Removed all mockup/placeholder data from Real World Examples and Summary lesson components - now displaying only generated content.

Checkpoint: Checkpoint saved: Updated Course Wizard prompts to generate better structured Summary lesson content with clear headings and vocabulary terms.

Remove CI workflow for GitHub push

Checkpoint: Fixed Summary lesson to parse and use generated markdown content for key concepts and vocabulary terms instead of hardcoded mockup data. Design preserved completely.

Checkpoint: Fixed Real World Examples to parse and use generated markdown content instead of hardcoded placeholders. Component now extracts case studies from Course Wizard content with organization names, titles, descriptions, and tags.

Checkpoint: Implemented new alternating left/right layout for Real World Examples page with professional case study cards, organization branding, category tags, hover effects, and responsive design based on approved HTML mockup.

Checkpoint: Removed duplicate lesson titles from CourseViewer that were appearing above all lesson components.

Checkpoint: Updated homepage text to reflect broader learning use cases beyond just students:

Checkpoint: Updated Course Wizard prompt to generate properly formatted Real World Examples content:

Checkpoint: Fixed Real World Examples page styling and content source:

Checkpoint: Removed Additional Resources section from lesson pages:

Checkpoint: Fixed lesson page structure and styling:

Checkpoint: Fixed UX/UI issues with paragraph styling and Key Takeaways:

Checkpoint: Implemented celebratory milestone confetti effects for course completion milestones:

Checkpoint: Implemented advanced UX enhancements with scroll-triggered animations, loading skeletons, and success micro-interactions:

Checkpoint: Implemented Micro-animations & Hover States design concept across all lesson components:

Checkpoint: Improved media placeholder experience: removed "Video not available" section from IntroductionLessonRedesign component, added professional educational placeholder image before "Enhance This Topic" section that displays when no media is generated, placeholder automatically replaced with generated video or image when user creates media. All previous refinements maintained: Enhance This Topic without Recommended badges or View Example links, proper bullet points in Learning Outcomes, Key Takeaways with sparkle icon, collapsible sidebar, optimized content widths.

Checkpoint: Updated Enhance This Topic section: removed "Recommended" badges from both Explainer Video and AI Image cards for cleaner interface, removed "View Example" dialog buttons from both media types to simplify user flow, changed Explainer Video time estimate from "2-4 min" to "15-30 min" to reflect more accurate generation time. All previous refinements maintained: educational video placeholder image, proper bullet points in Learning Outcomes, Key Takeaways with sparkle icon, collapsible sidebar, optimized content widths.

Checkpoint: Replaced plain blue background video placeholder with professional educational image showing person at computer with books and learning elements. Image uploaded to CDN and displays with semi-transparent blue overlay and play icon when video is not available. Creates more engaging visual experience while maintaining clear "video not available" messaging. All previous refinements maintained: proper bullet points in Learning Outcomes, Key Takeaways with sparkle icon, collapsible sidebar, optimized content widths.

Checkpoint: Fixed Learning Outcomes section to display bullet points properly as a formatted list instead of concatenated text. HTML list items (ul/ol) are now parsed into separate bullet points array and rendered with blue bullet markers. Each bullet point appears on its own line with proper spacing. Maintained all previous visual refinements: Key Takeaways with sparkle icon, collapsible sidebar, optimized content widths, rounded corners, borderless design.

Checkpoint: Adjusted course landing page section widths from 700px to 900px for better balance between readability and content display. Learning Outcomes and Curriculum sections now have more breathing room while maintaining focus. Lesson content remains at 650px for optimal reading experience. All visual refinements maintained: Key Takeaways with sparkle icon, collapsible sidebar, rounded corners, borderless design.

Checkpoint: Reduced content widths for better readability: lesson content to 650px, course landing sections to 700px. Maintained Key Takeaways redesign with sparkle icon, collapsible sidebar, and all visual refinements.

Checkpoint: Redesigned Key Takeaways section to match mockup design with sparkle icon and blue styling. Added light blue background (#EFF6FF) with rounded corners, sparkle icon next to blue title, numbered list format with bold headings, indented descriptions, and lightbulb illustration in top right corner. Removed border/shadow from topic context card. Implemented collapsible sidebar navigation. All visual refinements complete.

Checkpoint: Removed border and shadow from topic context card by replacing Card component with plain div. Added collapsible sidebar navigation with toggle button (collapses to 64px width). Added 10px rounded corners to video player and Key Takeaways section. All visual refinements complete with clean, borderless design.

Checkpoint: Added collapsible sidebar navigation with toggle button and visual refinements. Sidebar can now be collapsed to 64px width with chevron button, providing more screen space for lesson content. Added 10px rounded corners to video player and Key Takeaways section in IntroductionLessonRedesign. Removed borders from topic context card for cleaner appearance. All TypeScript checks passing.

Checkpoint: Applied visual editor refinements to course viewer redesign. Fixed topic context card styling (light gray background #f9fafc, no border) and removed duplicate title and transcript section from IntroductionLessonRedesign component for cleaner lesson display. All TypeScript checks passing.

Checkpoint: Redesigned course viewer page to match provided mockup with professional sidebar navigation, breadcrumbs, and improved lesson navigation. Implemented sidebar with progress tracking, expandable modules, locked lessons, breadcrumb navigation, mark as complete checkbox, and improved navigation buttons. Added 10 new translation keys. Created 22 unit tests (all passing).

Checkpoint: Implemented smart "Resume" button on course landing page that takes users directly to first incomplete lesson. Added findFirstIncompleteLesson() function to analyze progress and locate next lesson. Button dynamically shows "Resume learning" (Återuppta lärande) when course is partially completed or "Start course" (Börja kurs) when not started. Smart navigation uses URL parameters (?topic=X&lesson=Y) to jump to exact lesson. Added Swedish translations. All 9 unit tests passing covering various progress states, button text logic, and URL generation.

Checkpoint: Implemented comprehensive language validation system for course generation. Created detectLanguage() and validateCourseOutlineLanguage() functions using LLM to verify AI-generated content matches selected course language. Integrated validation into generateCourseOutline() with automatic rejection of mismatched content (>70% confidence). Added 15 unit tests covering all 13 supported languages, error handling, and integration scenarios. Prevents users from receiving course content in wrong language.

Checkpoint: Fix instructor and CTA section Swedish translations on course landing page

Checkpoint: Restore clickable lesson functionality and completion status indicators in course curriculum

Checkpoint: Fix remaining Swedish translation errors on course landing page curriculum section

Checkpoint: Complete Swedish localization for all lesson component templates

Checkpoint: Complete Swedish localization for course player, lesson viewer, and quiz interfaces

Checkpoint: Complete Swedish localization for course UI components

Checkpoint: Checkpoint saved: Course Language Selection Feature

Checkpoint: Checkpoint saved: CourseLandingRedesign Visual Edits - Removed Placeholder Elements

Checkpoint: Checkpoint saved: Comprehensive ESLint Ignore Patterns

Checkpoint: Complete ESLint Enforcement Workflow - Auto-fix, Pre-commit Hooks, and CI/CD

Checkpoint: Checkpoint saved: Complete ESLint Enforcement Workflow - Auto-fix, Pre-commit Hooks, and CI/CD Integration

Checkpoint: Checkpoint saved: ESLint Custom Rule for Sentence Case Enforcement

Checkpoint: Added comprehensive STYLE_GUIDE.md (v1.0) documenting Swedish sentence case standard, acronym preservation, and title formatting guidelines. Created reusable database-title-standardization skill with sentence case utility, migration script, templates, and language standards reference.

Checkpoint: Database title migration to sentence case: Created toSentenceCaseSmart utility function and migration script that converted 399 existing titles (38 courses, 84 topics, 277 lessons) to Swedish sentence case standard. Migration preserves acronyms like ADHD, AI, ML while converting all other words to lowercase except first letter. All existing content now follows sentence case formatting.

Checkpoint: AI-generated title sentence case enforcement: Updated all AI course generation prompts to explicitly instruct the LLM to use sentence case (only first letter capitalized) for all titles. Modified courseGeneration.ts, courseGenerationOptimized.ts to include TITLE FORMATTING instructions in prompts. All new courses, topics, and lessons will now follow Swedish sentence case standard.

Checkpoint: Comprehensive E2E & Integration Testing Complete

Checkpoint: Automated Testing Complete - E2E & Integration Tests

Checkpoint: QA Testing & Critical Fixes - tRPC routing fixed, all 16/16 tests passing, comprehensive QA reports created

Checkpoint: Updated PRD.md to version 3.2 with comprehensive changelog for unified topic media generation system. Updated TECHNICAL_ARCHITECTURE_V4.md to version 4.2 with detailed section on Unified Topic Media Generation Architecture including database schema, component architecture, workflows, cost optimization, and backward compatibility.

Checkpoint: Topic Media Generation Redesign: On-demand video/image generation from topic pages, replacing automatic video creation. New TopicMediaGenerator component with choice UI, regeneration limits, example previews, and recommended badges.

Checkpoint: Updated roadmap.md with three new high-priority items:

Checkpoint: Documentation Updates: TODO, PRD, and Technical Architecture

Add project roadmap with next steps and completed features

Checkpoint: Fixed video generation status persistence - video status now correctly displays after page reload. Added explainer video fields (explainerVideoJobId, explainerVideoStatus, explainerVideoUrl, explainerVideoThumbnail) to getCourseMetadata return, CourseData interface, and course data transformation in CourseLanding.tsx. Video generation progress now persists across page reloads.

Checkpoint: Course Page Redesign + AutoContent Explainer Video Generation

Checkpoint: Removed duplicate course description from hero section: - Hero section now shows only title, metadata (difficulty, duration, enrolled count), and CTAs - Full description content appears only in "What You Will Learn" section as structured learning outcome cards - Eliminates content duplication and improves page readability - Cleaner, more focused hero section that follows best practices for landing page design - All tests passing (4/4)

Checkpoint: Updated course landing page to dynamically extract learning outcomes from course description HTML: - Parser extracts both H2 and H3 headings from description - Automatically maps appropriate icons based on section titles (transform, why, included, perfect, completing) - Displays all 5 sections from course description as learning outcome cards: 1. Transform Your Workplace with Neurodiversity Inclusion 2. Why Neurodiversity Matters for Your Organisation 3. What is included? 4. Why is this perfect for you? 5. After completing this, you will be able to... - Includes fallback to generic learning outcomes if no sections found - All tests passing (4/4)

Checkpoint: Fixed HTML formatting issues in course redesign components: - Course description now properly renders HTML using dangerouslySetInnerHTML with prose classes - Added Streamdown import to ListenLearnRedesign and RealWorldExamplesRedesign for proper markdown rendering - Fixed missing icon imports (Briefcase, ExternalLink) in RealWorldExamplesRedesign - All lesson components now properly render formatted content instead of raw HTML tags - All tests passing (4/4)

Checkpoint: Course Page Redesign - Complete Implementation

Add course page redesign plan and video generation fixes

Checkpoint: Fixed automatic video generation - videos now generate and appear automatically when courses complete. Also updated video description text.

Checkpoint: Fixed automatic video generation for course topics - Complete end-to-end workflow now working:

Checkpoint: Implemented real-time video generation progress tracking and video queue management system:

Checkpoint: Fixed two critical bugs:

Update version and changelog

Checkpoint: Fix video generation pipeline: CourseViewer.tsx now populates selectedSourceIds from course data so the Generate Video button works correctly. Added logging to TopicExplainerVideo for easier debugging. All 17 tests passing.

Checkpoint: Fixed automatic explainer video generation during course creation:

Fix automatic video generation in CourseWizard

Mark video generation investigation as complete

Update todo.md with video generation investigation notes

Checkpoint: Fixed 504 Gateway Timeout on course content generation by implementing asynchronous background processing:

Fix 504 Gateway Timeout on course generation - implement async background processing

Checkpoint: Implemented background video generation with progress tracking for course explainer videos. Users select topics in CourseWizard, videos generate asynchronously in background, CourseViewer shows real-time progress (e.g. "Video generating... 45%"), toast notifications when videos are ready, automatic video player display, and retry functionality for failed generations. Course remains fully usable during video generation.

Checkpoint: Fixed tour guide conflict on MyGeneratedContent page:

Checkpoint: Implemented automatic explainer video generation for courses according to Version 2.1 plan:

Remove workflow files for GitHub push compatibility

Checkpoint: Fixed missing translation keys (home.newFeatures) in en.json and sv.json. Removed Technical Details section from CourseVideoFeature. Header fix for MyGeneratedContent preserved.

Checkpoint: Fixed missing translation keys: Added home.newFeatures section (title, learnMore, videoGeneration, sharing) to both en.json and sv.json locale files. The CourseVideoFeature hero badge now correctly shows "Explainer Videos" instead of the raw key "home.newFeatures.videoGeneration.title". The Home page New Features section also now uses proper locale keys instead of hardcoded fallback strings. TypeScript 0 errors.

Checkpoint: Checkpoint saved: Fixed header elements (language switcher, username, logout button) not appearing on /notebook/:id/generated route. Root cause: that route renders MyGeneratedContent.tsx, not NotebookView.tsx. Added LanguageSwitcher import, useAuth hook, logoutMutation, and header UI elements (language switcher, user name display, logout button) to MyGeneratedContent header. TypeScript 0 errors, 52 tests passing (auth + explainer video).

Checkpoint: Fixed NotebookView header visibility bug: - Removed hidden md:* classes from language switcher, user name, and logout button - All header elements now visible on NotebookView pages - TypeScript compiles with 0 errors

Checkpoint: Navigation & Consistency Improvements: - Removed PWA install banner from all pages - Added feature page links to homepage (Course Video Feature and Sharing Features) - Made CourseVideoFeature and SharingFeatures bilingual (Swedish/English) using i18n - Created AppHeader component with logo, language switcher, user name, and logout - Added AppHeader to CourseVideoFeature and SharingFeatures pages - Enhanced NotebookView header with language switcher, user name, and logout button - All TypeScript compilation passes with 0 errors

Checkpoint: Created comprehensive landing page at /course-video-feature describing the automatic explainer video generation feature for course topic introductions. Page includes hero section, 3-step user flow, UI mockup example, benefits grid, technical details, use cases, and CTAs. Fully responsive design with gradient styling.

Checkpoint: Fix: Explainer videos not appearing in My Generated Content. Root cause was a race condition between background poller and getExplainerVideoStatus, plus createSource() not handling embeddingStatus/language fields. Fixes: pre-generated resultSourceId stored in progress, idempotent source creation with existence check, proper error logging, 30-minute timeout (up from 10). All 51 tests pass.

Checkpoint: Dedicated Video Player Page: Created VideoPlayerPage component with HTML5 video player, script/transcript display with expand/collapse, download button, share link (copy to clipboard), video metadata (title, duration, language, creation date), source materials sidebar, and back navigation. Registered route at /notebook/:notebookId/video/:sourceId. Updated NotebookView and MyGeneratedContent to navigate to the new page instead of opening videos externally. 31 vitest tests passing, 0 TypeScript errors.

Checkpoint: Add CivicEd-tutor project ID to explainer video generation: AutoContent API /content/Create calls now include projects: ["70962d39-5bc1-4183-b7e7-4eba1bffeb8b"] (CivicEd-tutor). Added AUTOCONTENT_PROJECT_ID constant, projects field to CreateExplainerVideoParams interface, and 2 new vitest tests. All 42 explainer video tests pass, 0 TypeScript errors.

Checkpoint: Add CivicEd-tutor project ID to explainer video generation: AutoContent API /content/Create calls now include projects: ["70962d39-5bc1-4183-b7e7-4eba1bffeb8b"] (CivicEd-tutor). Added AUTOCONTENT_PROJECT_ID constant, projects field to CreateExplainerVideoParams interface, and 2 new vitest tests. All 42 explainer video tests pass, 0 TypeScript errors.

Checkpoint: Fix progress stuck at 15% bug: root cause was generation started with old server code before autoContentRequestId was saved. Added server-side logging to getExplainerVideoStatus for debugging. Manually fixed the stuck generation. Code verified correct for future generations.

Checkpoint: Fix progress stuck at 15%: AutoContent API returns status as percentage (0-100), not discrete codes. Updated mapStatusToProgress/mapStatusToProgressStatus to use percentage directly. Progress bar now shows real API percentage with descriptive milestones. Added "X% complete" text. All 39 tests pass.

Checkpoint: Fix explainer video progress polling: getExplainerVideoStatus now polls AutoContent API directly for real-time status. Added autoContentRequestId column to generationProgress table. Smooth progress calculation (queued 15→30, processing 35→90) with descriptive milestone messages. 38 vitest tests pass.

Checkpoint: Fix AutoContent API 400 Invalid Language error: added LANGUAGE_CODE_TO_AUTOCONTENT mapping (70+ languages) and mapLanguageCode() function in autoContentApi.ts to convert ISO 639-1 codes (e.g. "sv") to AutoContent API language names (e.g. "svenska"). 34 vitest tests passing including 16 new language mapping tests.

Checkpoint: Explainer Video generation feature via AutoContent API: backend API wrapper (autoContentApi.ts), tRPC procedures (generate.explainerVideo, generate.getExplainerVideoStatus), ExplainerVideoGenerator and VideoPlayer frontend components, integration into ContentGenerator wizard, MyGeneratedContent page with filter support, NotebookView with video badges and click handlers. 18 vitest tests passing. DB schema updated with thumbnailUrl, autoContentRequestId, videoShareUrl columns.

Checkpoint: Fix MIME type text overflow on source cards (mobile): Created formatFileType() utility in sourceIcons.tsx that converts long MIME types to user-friendly labels (e.g., "application/vnd.openxmlformats-officedocument.wordprocessingml.document" → "Word"). Updated 6 components: ChatSourceSelector, MobileSourcesSheet, SourceFilterSheet, NotebookDetail, NotebookView, MyGeneratedContent. Added max-w-[120px] truncate CSS safety net on Badge elements. 31 vitest tests all passing.

Checkpoint: Fix indexing progress indicator getting stuck: 1) Added 10-minute timeout for stuck sources (pending/processing) - treats them as completed in progress calculation, 2) Added dismiss (X) button on the progress banner, 3) Polling stops automatically when no actively indexing sources remain, 4) Failed sources now count as completed in progress calculation

Checkpoint: Fix audio transcription: send audio buffer directly to Whisper API instead of re-downloading from S3 URL. Root cause: S3 returned wrong content-type causing Whisper to receive unrecognizable audio (empty text, null language). Added audioBuffer/mimeType to TranscribeOptions, updated routers.ts to pass buffer directly.

Checkpoint: Improved version indicator visibility: 1. Fixed version showing as "dev-build" - added fallback to read existing version.ts when git is unavailable, plus timestamp-based fallback 2. Added BUILD_DATE alongside BUILD_VERSION for build freshness verification 3. Made version more visible in Home footer with styled badge format (v{hash}) and build date 4. Added version footer to Notebooks dashboard page 5. Added version info at bottom of AppDrawer (sidebar menu) 6. Updated copyright year to use dynamic year instead of hardcoded 2024 7. Added 6 vitest tests for version generation (all passing)

Checkpoint: Fix production upload failure (HTTP 429 rate limiting): 1. Increased upload rate limit from 20/hr to 100/hr per user 2. Changed rate limiting from IP-based to user session-based (app_session_id cookie) 3. Added client-side 429 error detection with user-friendly toast message 4. Added /api/performance/frontend POST endpoint to fix 404 spam in console 5. Added comprehensive vitest tests for rate limiting (6 new tests, all passing)

Checkpoint: Removed the 7-step onboarding tutorial dialog completely. Deleted 11 files: TutorialOverlay.tsx, TutorialContext.tsx, TutorialTrigger.tsx, tutorialSteps.ts, useAutoStartTutorial.ts, VideoTutorialLibrary.tsx, VideoPlayerModal.tsx, videoTutorial.ts, videoTutorials.ts, Tutorials.tsx. Cleaned up imports from Home.tsx, Notebooks.tsx, App.tsx, main.tsx, AppDrawer.tsx. Kept LanguageOnboarding (language selection dialog) intact.

Checkpoint: Fixed "Unable to transform response from server" tRPC error when uploading .docx files. Root cause: the upload mutation was synchronous - it did S3 upload + text extraction + RAG indexing in a single request, causing gateway timeouts for large files. Fix: Made RAG indexing fire-and-forget (async background processing). The upload now returns immediately after S3 upload + text extraction + DB save, and the client polls sources.list for indexing status updates. All 4 upload serialization tests pass.

ci: add GitHub Actions workflows for security and DB guard testing

temporarily remove workflows for push (GitHub App permission issue)

CivicNotes v1 - NotebookLM clone with test cleanup infrastructure and CI guard

Checkpoint: Three improvements: (1) Cleaned up custom_templates table - all 571 records were test data, plus 540 template_usage records. Fixed trackCustomTemplate to use correct insertId from drizzle results. (2) Cleaned up generation_progress table - removed 1227 orphaned/test records, kept 16 real records. (3) Created GitHub Actions workflow (.github/workflows/test-db-guard.yml) that runs pnpm test:safe on push/PR to main and develop branches, with proper secret injection and failure reporting.

Checkpoint: Three improvements: (1) Fixed notebooks.delete test by adding deletedAt IS NULL filter to getNotebookByNotebookId - all 8 notebook tests now pass. (2) Cleaned up 380 test courses plus 351 topics, 406 lessons, 136 courseProgress records, and 8 test users from production DB - kept 8 real courses. (3) Added CI guard script (scripts/test-db-guard.mjs) that snapshots DB counts before/after tests and fails if any table grows - available as pnpm test:safe.

Checkpoint: Added automatic test cleanup infrastructure to prevent test data from polluting the production database. Created testCleanup.ts with trackNotebook/trackCourse/trackCustomTemplate helpers, vitest.setup.ts with global afterEach cleanup, and updated all 59 test files that create notebooks or courses to use the tracking functions. Verified cleanup works correctly - DB counts remain stable before and after test runs.

Checkpoint: Merged UploadProgressBanner and IndexingProgressBanner into a single unified SourceProgressIndicator component. The new component is centered in the content area (not floating at the top) and shows both upload progress (file name, count, status) and indexing progress (sources indexed count, percentage) in one clean card. Added Swedish and English translations for new status messages. Removed old floating banner imports from MyGeneratedContent page. All 25 unit tests pass.

Checkpoint: Fixed the persistent "Unable to transform response from server" tRPC serialization error when uploading Word documents. Root cause: Workbox Service Worker was caching POST requests (mutations) with a 10-second timeout, causing stale/incorrect cached responses to be returned. Fix: Updated vite.config.ts Workbox configuration to only cache GET requests and increased timeout from 10s to 30s. Also removed debug logging from main.tsx.

Checkpoint: Fixed tRPC serialization error when uploading Word documents by improving error handling and ensuring all return values are serializable primitives

Checkpoint: Fixed IndexingProgressBanner not hiding when indexing complete. The banner was counting all sources (including generated content like briefing documents, audio overviews, etc.) instead of only uploaded/web sources that need indexing. Changed logic to filter indexableSources to only count uploaded and web sources, excluding generated content. Banner now correctly hides when all indexable sources are complete.

Checkpoint: Added two new features for better indexing visibility: 1) Toast notification when all sources finish indexing, encouraging users to start chatting or generating content. Uses useRef to track state and only shows once per batch. 2) Floating progress banner showing indexed sources count (e.g., "3/5 källor indexerade") with percentage and progress bar. Both features update in real-time as sources complete indexing.

Checkpoint: Implemented real-time status updates for sources during indexing. Sources with "pending" or "indexing" status are now automatically polled every 3 seconds, updating the UI in real-time as they progress through the indexing pipeline. Polling stops automatically when all sources are indexed. Visual feedback is provided through the existing SourceStatusBadge component which shows different colors and icons for each status (pending, processing, indexed, failed).

Checkpoint: Implemented upload progress display on Generated Content page. Created global UploadProgressContext for sharing upload state across components, UploadProgressBanner component that shows file name, progress percentage, and status (uploading/processing/retrying) in a floating banner. Added Swedish and English translations for upload status messages. The banner auto-dismisses when upload completes.

Checkpoint: Hidden URL input, Audio, Image, Excel/CSV, and Copied Text upload options from the Add Sources dialog. Kept only: PDF, Word (DOC/DOCX), PowerPoint, Website, and YouTube upload options. This simplifies the source upload UI and focuses on the most commonly used file types.

Checkpoint: Improved YouTube transcript error handling with user-friendly Swedish error messages. When a YouTube video has transcripts disabled, users now see a clear explanation and suggestions to try another video or add content manually. Added comprehensive error handling for: disabled transcripts, unavailable videos, age-restricted content, and network errors. Includes 18 unit tests covering all error scenarios.

Checkpoint: Fixed PowerPoint (PPTX) file upload that was stuck in "Pending" status. The issue was caused by incorrect JSZip library import - changed from `const JSZip = await import("jszip")` to `const JSZipModule = await import("jszip")` and then using `JSZipModule.default` to get the actual JSZip class. PPTX text extraction and RAG indexing now work correctly.

Checkpoint: Fixed Word document (DOCX) upload serialization error and added email retry logic for magic link sending. Changes include: explicit type conversion for upload response values, detailed DOCX extraction logging, and 3-attempt retry with 30s timeout for email sending.

Checkpoint: Added retry logic to magic link email sending: 3 attempts with 30s timeout and 2s delay between retries. This makes the email system more robust against temporary network issues. All 7 email tests pass.

Checkpoint: Fix onboarding flow - Tutorial dialog no longer conflicts with language selection. New users now see language selection first, then tutorial starts automatically after completing language preference. Prevents dialog layering issues and ensures smooth onboarding experience.

Checkpoint: Fix onboarding tutorial activation - Tutorial now starts automatically when users click "Get Started" button and navigate to notebooks page. Next button functionality verified working correctly.

Checkpoint: Implemented Priority 1 (Critical UX Enhancements) and Priority 3 (Visual & Interaction Polish) improvements for notebook creation flow:

Checkpoint: Fixed "Back to Notebook" button to always navigate to /notebooks overview page instead of individual notebook page

Checkpoint: Fixed duplicate Browse Templates buttons on Step 3, clarified that progress bar exists and sources are saved correctly (navigation issue), and added comprehensive Playwright E2E tests for notebook creation flow

Checkpoint: Added smooth transition animations to notebook creation flow: fade-in and slide-in effects when advancing between steps, plus animated step indicator badges for polished visual feedback

Checkpoint: Improved notebook creation UX: automatically advance from Step 2 (Add Sources) to Step 3 (Generate Content) after user uploads first source, eliminating manual Next button click

Checkpoint: Implemented automatic retry with exponential backoff (1s, 2s, 4s) for network errors and timeouts during file upload. Added network error detection and improved user feedback showing retry reason and attempt count.

Checkpoint: Fixed tRPC serialization error on file upload by delaying sheet close (500ms) to prevent component unmount during mutation initialization

Checkpoint: Improved upload UX: AddSourceSheet closes immediately when files are selected, upload continues in background, and sources appear in list immediately with real-time indexing status updates

Checkpoint: Fixed upload flow regression: AddSourceSheet now closes immediately after upload from Sources tab without showing QuickTemplates dialog

Checkpoint: File upload UX improvements: increased file size limits to 100MB for documents, added drag-and-drop upload on Sources tab with visual feedback and file validation

Checkpoint: Fixed File Upload Error - tRPC Serialization Issue

Checkpoint: Sources Tab Refactored - Only Uploaded Sources

Checkpoint: Audio Tab Repositioned

Checkpoint: Courses Tab Repositioned

Checkpoint: Translation System Fixed - All Tabs Working

Checkpoint: Translation Fixes & Action Buttons Added

Checkpoint: UI Improvement - Sources Tab Repositioned

Checkpoint: Indexing UX Improvements - Toast Notifications & Time Estimates

Checkpoint: Fixed URL Import Flow - Sources Appear Immediately

Checkpoint: URL Import UX & Retry Button Improvements

Checkpoint: Fixed source indexing system and improved retry button visibility

Checkpoint: Added one-click re-indexing from history entries. Each history item now has a rotating refresh button that triggers re-indexing for that specific source. Includes loading state with spinning icon and toast notifications for success/failure.

Checkpoint: Added comprehensive indexing history log showing completed operations with timestamps, duration, chunk counts, and warnings. Updated database schema to track indexing metrics, modified all indexing endpoints to record history data, and created collapsible IndexingHistoryLog component with relative timestamps and warning indicators.

Checkpoint: Added live status updates, batch retry, and indexing queue visualization for source indexing:

Checkpoint: Added indexing progress indicator and retry mechanism for source indexing:

Checkpoint: Implemented automatic source indexing and database cleanup

Checkpoint: Fix chat to start with no sources pre-selected when user starts a new chat

Checkpoint: Update button text from "Select" to "Select source" for better clarity

Checkpoint: Replace hardcoded text with translation keys in Notebooks.tsx

Checkpoint: Replace hardcoded text with translation keys in Sources view

Checkpoint: Add missing Swedish translations for "New Briefing", "New Study Guide", and "New Audio" buttons

Checkpoint: Add Swedish translations for remaining hardcoded text in MyGeneratedContent.tsx

Checkpoint: Fix CivicNotes title displaying black text on mobile email clients

Checkpoint: Fix magic link email template styling for better mobile readability

Checkpoint: Add comprehensive translation infrastructure for complete Swedish language support

Checkpoint: Add Swedish translations for hardcoded text in MyGeneratedContent.tsx

Checkpoint: Update homepage hero text to emphasize personalized learning and organizational use

Checkpoint: Add comprehensive Slack integration guide for Sentry error notifications

Checkpoint: Enhanced Sentry monitoring with improved performance tracking and comprehensive setup guide

Checkpoint: Remove dev-build version display from Notebooks page

Checkpoint: Add demo video recording task and test user creation script

Add demo video recording task and test user creation script

Checkpoint: Updated demo video recording solution to use session token authentication instead of OAuth login:

Checkpoint: Added dual video format support (YouTube + MP4) to homepage and created automated Playwright recording solution:

Checkpoint: Added professional student photos to testimonials section for increased authenticity:

Checkpoint: Added student testimonials carousel and YouTube video embed capability to complete home page social proof:

Checkpoint: Implemented six home page enhancements to increase engagement and conversions:

Checkpoint: Applied same copy refinements to Swedish translation for brand consistency:

Checkpoint: Refined English copy across benefits and features sections for more concise, impactful messaging:

Checkpoint: Updated English hero section with more playful, approachable messaging:

Checkpoint: Updated student benefits section title from "För studerande och föräldrar" (For Students and Parents) to "För alla!" (For everyone!) to broaden the appeal and make it more inclusive.

Checkpoint: Added student-focused benefits section to home page under hero CTA button:

Checkpoint: Complete 100% Swedish translation coverage with time formatting, placeholders, and profile settings:

Checkpoint: Complete additional UI translations for tutorials, navigation, and notifications:

Checkpoint: Fix remaining untranslated empty states and error messages in Swedish translation:

Checkpoint: Complete comprehensive Swedish translation implementation for CivicNotes:

Checkpoint: Added 100+ translation keys for full Swedish coverage - Progress Dashboard stats, Create Notebook dialog, empty states, time indicators, and common UI elements. Translation infrastructure now complete with keys ready for component integration.

Checkpoint: Comprehensive Swedish translation coverage - Added 80+ translation keys and updated 6 components (AppDrawer, MyGeneratedContent, ContentGenerator, AddSourceSheet, VoiceRecorder, ContentMenu) to use translation keys for menu navigation, content type tabs, action buttons, dialogs, and content actions

Checkpoint: Fix incomplete Swedish translations in NotebookDetail page and related components

Checkpoint: Checkpoint saved: Remove Sentry test section from Home page

Checkpoint: Checkpoint saved: Complete Home page multi-language implementation with automatic language detection

Checkpoint: Translate Home page (landing page) with English and Swedish language support: - Added useTranslation hook to Home page - Created translation keys for hero section, header buttons, and CTAs - Translated hero title, subtitle, and call-to-action button - Translated header navigation buttons (My Notebooks, Log Out, Get Started) - Language switching now works on landing page with localStorage persistence - Complete multi-language support across all major pages (Home, Notebooks, NotebookDetail, ChatHistory, VideoTutorialLibrary)

Checkpoint: Complete multi-language support by translating ChatHistory and VideoTutorialLibrary pages: - Added useTranslation hook to ChatHistory page with comprehensive translations - Translated all UI strings in VideoTutorialLibrary page (search, results, empty states) - All major pages now support English and Swedish language switching - Language switcher functional with localStorage persistence - Translation infrastructure complete and ready for additional languages

Checkpoint: Implement comprehensive multi-language support (English and Swedish) for CivicNotes UI: - Translated NotebookDetail page (toast messages, buttons, key UI elements) - Added comprehensive translation keys for Chat, Settings, VideoTutorialLibrary pages - Translation infrastructure ready for remaining pages - All translation files updated with Swedish and English translations - Language switcher functional and integrated

Checkpoint: Implemented comprehensive multi-language support (i18n) for CivicNotes:

Checkpoint: Syncing local changes with GitHub repository. This checkpoint will pull the latest changes from the remote repository and push any local modifications, ensuring both environments are synchronized.

Checkpoint: Fixed notebook creation modal positioning issue where dialog appeared at the bottom of the screen on desktop. Removed complex positioning classes (fixed, inset-0, translate transforms) from DialogContent and simplified to use default centered positioning. Modal now appears properly centered on desktop while maintaining responsive behavior.

Checkpoint: Fixed critical bug where clicking "Delete" in notebook menu redirected to notebook detail page instead of showing confirmation dialog. Root cause was event propagation from DropdownMenuItem to Card onClick handler. Added e.stopPropagation() to prevent event bubbling. Verified fix with comprehensive Playwright testing - both add and delete workflows now work correctly.

Checkpoint: Added course generation tutorial to video library

Checkpoint: Added comprehensive video tutorial library with 16 tutorials across 6 categories

Checkpoint: Added interactive user onboarding tutorial system

Checkpoint: Added comprehensive feature documentation with screenshots

Checkpoint: Security Hardening: Comprehensive OWASP Top 10 protection implemented

Checkpoint: Fixed preview loading failure by updating security headers to allow iframe embedding from Manus domains. Changed X-Frame-Options from DENY to ALLOWALL in development mode and updated CSP frame-ancestors directive to include Manus domains (*.manus.im, *.manus.computer, *.manusvm.computer).

Checkpoint: Implement URL validation and normalization feature

Checkpoint: Fixed Sentry errors CIVICNOTES-2 and CIVICNOTES-3:

Checkpoint: Fix URL import functionality: - Added extractedText field to importUrl source creation to fix downstream processing - Improved URL validation with automatic www. prefix normalization - Added comprehensive error handling for invalid and unreachable URLs - Created test suite to verify URL import functionality - All tests passing (8/8)

Checkpoint: Fix web search feature URL validation issue

Checkpoint: Implemented search result caching and progressive results display features:

Checkpoint: Completed "Find Sources on Web" feature implementation

Checkpoint: Add "Find Sources on Web" feature structure

Checkpoint: Fixed overlapping text issue in Add Sources dialog header on mobile view by removing redundant label and description text, consolidating instructions into the input placeholder

Checkpoint: Fixed NewNotebookFlow dialog mobile UI issues: - Removed gap at top by making dialog fullscreen on mobile (h-[100vh], fixed positioning) - Fixed header step indicator overflow with horizontal scroll - Dialog now properly fills entire mobile viewport without gaps - Desktop behavior unchanged (centered modal with rounded corners)

Checkpoint: Fixed mobile dialog modal to be fullscreen - NewNotebookFlow dialog now takes up full screen on mobile devices while maintaining centered card layout on desktop

Checkpoint: Set Swedish as default language in notebook creation dialog for better UX. Changed the defaultLanguage parameter from "en" to "sv" in NewNotebookFlow component.

Checkpoint: Implemented step-by-step new notebook flow with three stages: 1. Create notebook - Enter title and select language 2. Upload sources - Add files, URLs, or web content 3. Select template - Choose quick template to generate content

Checkpoint: Fix magic link authentication error - "Unable to transform response from server"

Checkpoint: Enhanced podcast script generation with language-specific instructions for more natural multilingual conversations. Updated LLM prompts to generate scripts in the selected language with culturally appropriate host names, expressions, and conversational patterns. Added comprehensive test coverage for multiple languages including English, Swedish, Spanish, French, and more.

Checkpoint: Add language selector to audio overview generation for consistent multi-language support

Checkpoint: Add language selector to study guides, flashcards, and briefing generation

Checkpoint: Fixed language system and source upload bugs:

Checkpoint: Implemented language-specific voice selection and language preference onboarding flow

Checkpoint: Comprehensive language support implementation completed:

Checkpoint: Extended language support to flashcards, added language badges to notebook cards, and implemented language-aware RAG chat responses

Checkpoint: Implemented comprehensive language support features:

Checkpoint: Implement language selection feature for notebooks with audio generation integration

Checkpoint: Implement language selection feature (Swedish & English)

Checkpoint: Remove custom session replay and error logging implementations

Checkpoint: Fixed React hooks error by ensuring hooks are called unconditionally in SessionReplayProvider and useSessionReplay hook. The authentication check is now handled inside the useEffect instead of conditionally calling the hook.

Checkpoint: Added comprehensive Session Replay functionality to CivicNotes:

Checkpoint: Implemented comprehensive performance monitoring system with API response tracking, database query monitoring, HTTP request tracking, and transaction traces. Added admin dashboard with real-time metrics visualization, slow operation detection, and performance breakdown by operation type. All tests passing.

Checkpoint: Fixed Sentry error tracking integration: - Removed development mode filter that was blocking error reports - Added VITE_SENTRY_DSN environment variable for frontend access - Exposed Sentry globally for testing and debugging - Updated error capture in test button to use Sentry.captureException() - Verified errors are now successfully sent to Sentry dashboard

Checkpoint: Completed error dashboard feature with comprehensive error tracking and monitoring capabilities:

Checkpoint: Integrated Sentry error tracking and monitoring for both frontend and backend

Checkpoint: Testing & Quality Assurance + Security Implementation

Checkpoint: Implemented comprehensive security measures for launch preparation:

Checkpoint: Updated chat history page: added hamburger menu for navigation and removed back arrow button. Users can now access the full app menu from the chat history page, consistent with other pages like Trash.

Remove workflow file to fix GitHub push permissions

Checkpoint: Initial checkpoint for CivicNotes (NotebookLM Clone) with comprehensive features:

Checkpoint: Updated GitHub integration with new personal access token. Project includes comprehensive documentation (PRD, Technical Architecture, Developer Guide) and updated todo.md tracking all features and enhancements.

Checkpoint: UI improvements for Sources page: - Removed the "Select" button from the header to simplify the interface - Added a three-dots menu (⋮) to each source item with delete option - For generated sources, the menu includes both "Regenerate" and "Delete" options - For regular sources, the menu only shows the "Delete" option - Clicking delete from the menu opens the confirmation dialog

Checkpoint: Reorganized Sources page header layout - moved action buttons (Select, Add Source) to a new row under the Sources title for better mobile responsiveness and clearer visual hierarchy

Checkpoint: Complete NotebookLM clone with notebook management, source upload (PDF, documents, audio, video, URLs), RAG-based chat with citations, audio overview generation, content generation (flashcards, quizzes, study guides), voice recording with transcription, session management, trash/recycle bin with 30-day retention, and mobile-responsive design. All reported bugs fixed except flash of Filter Sources screen.

Checkpoint: Fixed action button truncation in Sources section of MyGeneratedContent page. Added flex-wrap to button container to allow buttons to wrap on mobile instead of being cut off. All four buttons (Select All, Deselect, Cancel, Add Source) are now fully visible on mobile devices.

Checkpoint: Fixed mobile UI overflow in NotebookDetail Sources selection mode. Action buttons (Tag, Export, Delete, Cancel) now use responsive grid layout that properly fits within mobile viewport instead of extending beyond screen boundaries.

Checkpoint: Fixed mobile view UI issues for Sources section in NotebookDetail page: - Made action bar responsive with flex-col on mobile, flex-row on desktop - Separated "Select All" and "Show Generated" sections into distinct groups - Added proper spacing and wrapping for mobile layouts - Made bulk action buttons (Tag, Export, Delete) stack properly on mobile with icon-only display - Improved readability by adjusting text layout and removing ml-auto on mobile

Checkpoint: Fixed Sources tab UI overlap issue where the header row with action buttons was overlapping with the bottom action bar. Adjusted padding and spacing in the main content area to ensure proper visual hierarchy and prevent overlapping elements.

Checkpoint: Added hamburger menu button to trash page for consistent navigation across all pages

Checkpoint: Fixed mobile UI layout issues on trash page: - Made header section responsive with flex-col on mobile - Made stats card full-width on mobile - Made tabs and action buttons wrap properly on mobile - Made restore/delete buttons stack vertically on mobile - Made notebook card headers responsive with proper spacing - Improved overall mobile experience with proper breakpoints

Checkpoint: Added two new trash management features:

Checkpoint: Add "Empty Trash" button feature to permanently delete all trashed items at once with confirmation dialog

Checkpoint: Implemented three trash management features:

Checkpoint: Added Trash navigation link to sidebar and implemented auto-cleanup scheduled job

Checkpoint: Implemented deletion confirmation dialogs and soft delete system with 30-day trash/recycle bin

Checkpoint: Implemented comprehensive cleanup logic for notebook and source deletions

Checkpoint: Add unique pastel color assignment to notebooks

Checkpoint: Removed branch feature from notebook chat interface and cleaned up related code: - Removed BranchSwitcher component and import from NotebookView.tsx - Removed branch button from chat message actions - Removed activeBranchId state and branch-related mutations - Removed branches router from server/routers.ts - Removed all branch-related database functions from db.ts - Removed branchId parameter from aiSources router and database functions - Deleted BranchSwitcher.tsx component file - Deleted branch-related test files (branches.test.ts, branches.create.test.ts, branchAndAiSource.test.ts) - Updated aiSources.test.ts to remove branchId test case - Branch database tables remain in schema to preserve existing data

Checkpoint: Fixed 404 error when clicking "Open" on chat history items by adding missing /notebook/:notebookId/chat route to App.tsx

Checkpoint: Added chat history page with navigation link in drawer menu. Users can now view all their chat sessions across all notebooks, with options to open or delete sessions. The page displays session titles, notebook names, creation/update timestamps, and provides quick access to resume conversations.

Checkpoint: Removed "Clean Vector Store" functionality and cleaned up related code: - Removed cleanupVectorStore procedure from server/routers.ts - Removed Clean Vector Store button and mutation from NotebookDrawer component - Removed Clean Vector Store button, mutation, and confirmation dialog from NotebookView page - Removed unused imports (Trash2 icon) and props (onCleanVectorStoreClick) - Removed cleanupVectorConfirmOpen state variable

Checkpoint: Fixed chat header issues: 1. Removed generate icon (Sparkles button) from chat header 2. Fixed PDF export to only include current chat session messages instead of all notebook messages - Updated exportPDF procedure to accept optional sessionId parameter - Modified frontend to pass activeSessionId when exporting - Export now uses getMessagesBySession when sessionId is provided

Checkpoint: Fixed flash of "Filter Sources" screen appearing for 2 seconds when clicking Chat from notebook. Now initializes activeSessionId from URL params and shows loading spinner instead of empty state during session load.

Checkpoint: Initial NotebookLM clone project scaffold with React 19, Tailwind 4, Express, tRPC, and Manus OAuth authentication configured and ready for feature development.

Checkpoint: Made sources section collapsible and closed by default in chat interface. Users can now click to expand/collapse the sources list, reducing visual clutter while keeping citations accessible.

Checkpoint: Removed source metadata section (1 source, Medium confidence, Show 3 chunks) from summary response UI for a cleaner interface. The RetrievalInfo component now returns null instead of displaying metadata badges.

Checkpoint: Fixed UI layout issue where text content was appearing below the chat input area. Increased bottom padding from pb-48 (192px) to pb-[280px] on mobile and pb-[240px] on desktop to properly accommodate the fixed chat input container including source selection area, input field, and iOS safe area insets.

Checkpoint: Fixed header buttons (Clean Vector Store, Export PDF, Generate, New Chat) not being visible on iOS mobile. Changed responsive classes from hidden on mobile to visible with icon-only display on small screens and full text on larger screens. Buttons now show icons on mobile (<1024px) and icons + text on desktop (>=1024px).

Checkpoint: Fixed sticky header disappearing after sending first message in notebook chat. Removed overflow-hidden from parent container to allow sticky positioning to work properly. The header now remains visible at the top during chat interactions and scrolling.

Checkpoint: Fixed missing sticky header in notebook chat page by adding overflow-hidden to parent container and backdrop-blur effect to header for better iOS Safari compatibility

Checkpoint: Fixed sticky chat input layout - messages no longer scroll underneath the input area. Increased bottom padding from pb-32 to pb-48 on the messages container to provide adequate clearance for the fixed chat input at the bottom.

Checkpoint: Fixed AI streaming functionality - responses now stream token-by-token instead of appearing all at once. Updated SSE event parsing logic in useStreamingChat hook to properly track event types across line boundaries.

Checkpoint: Fixed critical chat interface bugs:

Checkpoint: Fixed three critical notebook chat issues:

Checkpoint: Fixed chat UI issues: 1. Made header sticky with z-50 to stay on top 2. Added proper formatting with Streamdown and 5px padding to AI responses 3. Streaming already implemented via useStreamingChat hook 4. Added optimistic UI update to show user messages immediately when sent

Checkpoint: Removed SessionSelector and BranchSwitcher dropdowns from chat header: - Removed mobile/tablet SessionSelector dropdown (lines 1119-1136) - Removed desktop SessionSelector and BranchSwitcher dropdowns (lines 1137-1164) - Header remains sticky (already had sticky top-0 z-10 classes) - Cleaner, simpler header focused on notebook/session title - Updated todo.md to mark tasks as complete

Checkpoint: Removed standalone chat feature and cleaned up related code: - Removed StandaloneChat.tsx and ChatHistory.tsx pages - Removed /chat and /chat-history routes from App.tsx - Removed standalone chat navigation items from AppDrawer (mobile and desktop) - Removed listStandalone and createStandalone procedures from chatSessions router - Removed getStandaloneChatSessions function from db.ts - Kept notebook-based chat functionality intact (core RAG feature) - Updated todo.md to mark task as complete

Checkpoint: Added typing indicator to chat interfaces

Checkpoint: Chat Interface Customization - Enhanced empty state messages and input placeholders

Checkpoint: Removed suggested questions from initial chat interface - cleaned up empty state to only show "Start a conversation" message without question suggestions

Checkpoint: Fixed suggested questions feature to use ALL uploaded sources instead of limiting to first 3 sources

Checkpoint: Removed the DueFlashcardsBanner component from the notebook chat page as requested by the user. The flashcards section that appeared at the top of the chat interface has been removed, providing a cleaner chat experience.

Checkpoint: Implemented standalone chat feature without notebook/source connections

Checkpoint: Fixed chat source selection flow - users can now select sources from within the chat interface after creating a new chat. Added ChatSourceSelector component that displays when no sources are selected, allowing users to choose which notebook sources to use for their conversation.

Checkpoint: Fixed bug where new chat sessions were incorrectly starting with attached sources from the ContinueChatDialog. When users click "Start New Chat", the session now starts completely clean without any sources attached.

Checkpoint: Chat Feature Enhancements - January 2026

Checkpoint: Extended progress persistence to briefings, study guides, flashcards, and quizzes for consistent user experience across all content types.

Checkpoint: Implemented progress persistence for audio generation:

Checkpoint: Enhanced NotebookLM clone with two key improvements:

Checkpoint: Verified that generating indicators are already implemented and working correctly for flashcards, study guides, and briefings. Backend sets generationStatus to generating when content creation starts, and frontend displays badge with spinning loader icon. Tested with briefing generation showing progress card and generating status badge.

Checkpoint: Implemented background generation pattern for flashcards, study guides, and briefings to provide consistent UX across all content types.

Checkpoint: Implement background quiz generation with real-time progress updates

Checkpoint: Implemented enhanced quiz customization dialog with difficulty level and question count selection

Checkpoint: Fixed Continue button in course landing page to navigate to last accessed lesson by adding query invalidation. Fixed quiz generation by removing non-existent customization dialog and starting generation directly. Added debug logging to track generation flow. Audio overview generation still has network/API issues that need investigation.

Checkpoint: CivicNotes (NotebookLM Clone) - Production-ready checkpoint with all core features implemented:

Checkpoint: Redesigned course content bottom sheet to match reference image with circular radio buttons, book/play icons, and cleaner list layout without blue highlight boxes

Checkpoint: Updated terminology from "Module" to "Topic" throughout the application and ensured text alignment is left-aligned in course content display.

Checkpoint: Changed "Continue Learning (17% complete)" button text to simply "Continue" in the course detail page (CourseLanding.tsx)

Checkpoint: Added three UI enhancements to course curriculum view:

Checkpoint: Implemented "Continue Learning" functionality that navigates users to their last accessed lesson position in courses.

Checkpoint: Removed the Share button from the CourseViewer page (notebook page). This includes: - Removed Share2 icon from lucide-react imports - Removed handleShare function that generated shareable links - Removed shareMutation from tRPC mutations - Removed the Share button from the UI header

Checkpoint: Added numbered learning objectives (1., 2., 3., etc.) to lesson display in course introduction sections. Updated both courseGeneration.ts and courseGenerationOptimized.ts to format learning objectives with numbers.

Checkpoint: Lesson View UI Improvements: - Removed Card/box wrappers from lesson text content for cleaner reading experience - Moved bookmark icon to the top header for better accessibility - Improved lesson text formatting with larger prose size (prose-base instead of prose-sm) - Added custom CSS for better typography: clear heading hierarchy, proper paragraph spacing (1.25em), improved line height (1.75) - Enhanced heading styles with better margins and font weights - All lesson types (introduction, text, numbered_lesson, examples, summary, repetition) now render without boxes

Checkpoint: Fixed audio player layout issue where the Regenerate button was being cut off at the right edge on mobile devices. Made the voice selector and regenerate button row responsive with flex-wrap, reduced voice selector width on mobile (180px vs 200px on desktop), and added flex-shrink-0 to prevent button compression.

Checkpoint: Verified ElevenLabs API integration for audio generation

Checkpoint: Fixed ElevenLabs API character limit error by implementing intelligent text chunking:

Checkpoint: Fixed Listen & Learn audio generation to follow the documented course generation flow:

Checkpoint: Audio Enhancements: Voice Caching & Progress Indicators

Checkpoint: Fixed "Listen and learn" audio player functionality in course lessons:

Checkpoint: Production-ready NotebookLM clone with comprehensive features including: - Magic link authentication with multi-device session management - PWA with offline support and install prompts - Multi-format document processing (PDF, DOCX, XLSX, PPTX, TXT, MD, JSON) - URL and YouTube transcript import - Voice recording with Whisper transcription - RAG-powered chat with Voyage AI embeddings and Qdrant vector search - Content generation (briefings, study guides, flashcards, quizzes) - Audio overview generation with multiple formats - Comprehensive testing suite (92 test files, 13,611 lines) - Full JSDoc documentation with TypeDoc HTML generation - Mobile-optimized UI with bottom sheets and haptic feedback

Checkpoint: Audio Enhancement Features Verification

Checkpoint: Added ElevenLabs TTS audio generation to Listen & Learn lessons with inline audio player and caching

Checkpoint: Updated course structure to follow correct naming pattern:

Checkpoint: Initial implementation of NotebookLM clone with complete features: document upload (PDF/TXT/DOCX), RAG-powered Q&A, audio overview generation, source management, and modern UI

Checkpoint: Enhanced course generation system to follow complete hierarchical structure:

Checkpoint: Implemented strict 11-component course structure for every topic:

Checkpoint: Comprehensive documentation update including: - Updated PRD with complete feature specifications - Technical architecture documentation - Developer guide with onboarding and examples - Updated roadmap with Q1-Q4 2025 plans - Comprehensive todo tracking with status

Checkpoint: Production-ready NotebookLM Clone (CivicNotes) v3.0 - Full-featured AI-powered note-taking application with: magic link authentication, notebook management, multi-format source upload (PDF, DOCX, XLSX, PPTX, TXT, MD, JSON), URL/YouTube import, voice recording with Whisper transcription, RAG-powered chat with citations, content generation (briefing, study guide, flashcards, quiz), audio overview generation with multiple formats, PWA support, mobile-responsive design with bottom sheets, comprehensive test suite (92 test files), and full JSDoc documentation.

Checkpoint: Voice preference features: notebook-specific preferences and favorite voices display

Checkpoint: Voice preference features: notebook-specific preferences and favorite voices display in selection

Checkpoint: Voice preference features: notebook-specific preferences and favorite voices display

Checkpoint: Fixed critical mobile UI issues with voice selection step and audio template cards:

Checkpoint: Fixed Voice Selection visibility in Audio Overview feature: - Voice selection step now appears between source selection and generation for all audio templates - Audio template cards now display duration badges (e.g., "10-15 min") and voice count badges (e.g., "2 voices") - Two-host formats (Deep Dive, Critique, Q&A) show Host 1 and Host 2 voice selectors - Single-narrator format (Brief) shows only Narrator voice selector - Backend updated to accept voice parameters in all audio generation procedures - All tests passing (voicePreferences.test.ts: 10 tests, audioOverview.test.ts: 11 tests)

Checkpoint: Fixed audio generation UI visibility issues: - Added duration badges to audio template cards (10-15 min, 3-5 min, 7-10 min, 5-8 min) - Added speaker count badges (1 voice, 2 voices) with appropriate icons - Updated descriptions to clearly indicate audio format (e.g., "Two hosts explore key insights") - Applied fixes to both ContentGenerator and QuickTemplatesSheet components

Checkpoint: Added three audio overview enhancements: 1. Voice selection - Users can choose different voices/hosts before generating audio overviews (already existed via VoiceSelector component) 2. Audio description - Each audio template card now displays what the audio is (e.g., "Two hosts discussing", "Single narrator") 3. Estimated duration - Each audio template card shows expected audio length (e.g., "10-15 min", "3-5 min")

Checkpoint: Added audio quick templates to the Generate Content modal: - Added 4 audio overview types: Deep Dive, Brief, Critique & Analysis, Q&A/Debate - Updated ContentType to include audio-overview-deep, audio-overview-brief, audio-overview-critique, audio-overview-qa - Added Mic icon import from lucide-react - Added audio generation mutations (audioOverviewDeep, audioOverviewBrief, audioOverviewCritique, audioOverviewQA) - Added switch cases in startGeneration function to handle audio generation - Updated ContentDisplayModal type to support new audio types - All audio templates now appear in the quick templates grid with orange styling and microphone icons

Checkpoint: Removed the "View" dropdown menu with eye icon from the CourseViewer lesson page header. This included: - Removed the DropdownMenu with Eye icon that contained source filter options (All Sources, Uploaded Only, Generated Only) - Cleaned up unused imports (Eye, Upload, Sparkles, DropdownMenuSeparator, DropdownMenuLabel) - Removed unused filterType state variable The header now only shows: Back button, Save for Offline button, and Share button.

Checkpoint: Removed the "Back to Notebook" button and "Select" checkbox dropdown menu from the CourseViewer lesson page header as requested. The back arrow button that navigates to the course landing page is preserved.

Checkpoint: Fixed navigation for "Return to my notebook" and "Back to Notebook" buttons: - Added "Back to Notebook" button on CourseLanding page header that navigates to /notebook/{notebookId}/generated - Added "Back to Notebook" button on CourseViewer page header - Updated CourseWizard "Return to my notebook" and "Return to Notebook" buttons to navigate to /notebook/{notebookId}/generated instead of /notebook/{notebookId} - All navigation buttons now correctly return users to the main notebook generated content view

Checkpoint: Fix: Auto-return to notebook page after generating Briefing (especially on mobile view) - Added onClose callback to ContentGenerator in MyGeneratedContent.tsx to properly close the bottom sheet after clicking Continue

Checkpoint: CivicNotes - NotebookLM Clone with complete features: notebook management, document upload/processing, AI-powered Q&A chat, summary generation, quiz generation, audio podcast generation with ElevenLabs TTS, and vector search using Qdrant. Includes landing page, dashboard layout, and all core functionality.

Checkpoint: Fixed critical navigation bug in source selection flow

Checkpoint: Fixed bottom sheet not closing after clicking Continue button in content generation flow. Added state reset and 100ms delay to ensure proper cleanup before closing the sheet.

Checkpoint: Fixed navigation flow after content generation - removed automatic briefing document dialog opening so users are taken to My Generated Content page instead

Checkpoint: Fixed bottom sheet navigation issue where clicking Continue after selecting sources would navigate to the wrong page. Added returnPath prop to QuickTemplatesSheet component to allow it to return to the originating page (MyGeneratedContent) instead of always going to NotebookView.

Checkpoint: Fixed Briefing Document generation to automatically open modal after generation completes

Checkpoint: Fixed bottom sheet not closing when clicking Continue button for quiz generation - now closes immediately and generation happens in background

Checkpoint: Fixed bottom sheet to close immediately when clicking the generate/continue button. Added onClose callback prop to ContentGenerator component and wired it to close the sheet when generation starts.

Checkpoint: Implemented comprehensive hotspot analytics features:

Checkpoint: Hotspot System Enhancements - Mobile Support & Analytics

Checkpoint: Added interactive hotspots with pulsing indicators on key UI elements

Checkpoint: Fixed onboarding guide positioning and first-time-only display: - Fixed WelcomeTour modal positioning to be properly centered on screen - Simplified positioning classes for better mobile compatibility - First-time-only display logic already implemented using localStorage - Guide only shows on first visit to My Generated Content page

Checkpoint: Fixed generating state bug

Checkpoint: Fixed infinite generating loading state bug - improved type matching and polling intervals

Checkpoint: Fixed deployment error by removing symbolic link at docs/versions/latest and replacing it with a real directory copy. This resolves the "failed to create zip archive" error that was preventing the project from being published.

Checkpoint: Fixed content generation bugs: 1. Removed redirect to /notebook/:notebookId after clicking generate - users now stay on current page 2. Removed duplicate content creation - backend already saves generated content, removed redundant frontend save call

Checkpoint: Fixed UI issues in Add Sources and Generate Content dialogs: - Removed duplicate close button in Add Sources dialog (Sheet component already has built-in close button) - Fixed truncated file names in Generate Content source selection by using line-clamp-2 with tooltip for full name display - Both dialogs now have cleaner, more professional appearance on mobile

Checkpoint: Fixed UI issues in source selection dialog: - Improved checkbox visibility by changing border color from border-input to border-muted-foreground/30 for better contrast - Increased filename truncation limit from 50 to 80 characters to show more text - Applied fixes to both SourceSelectionSheet and CreateCourseSheet components - Maintained mobile responsiveness with proper tap targets and layout

Checkpoint: Documentation Phase 8 Complete: - Generated TypeDoc HTML documentation (docs/api-html/) - Archived documentation version v3.0.0 (docs/versions/v3.0.0/) - Added comprehensive JSDoc to VoiceRecorder component - Added comprehensive JSDoc to ContentGenerator component - Added comprehensive JSDoc to FlashcardViewer component - Added comprehensive JSDoc to AudioOverviewGenerator component - All TypeScript compilation passes with 0 errors - Updated todo.md with completed documentation tasks

Checkpoint: Extended documentation phase 7: Added comprehensive JSDoc documentation to AddSourceSheet, ChatInterfaceTour, and QuizViewer components. Set up versioned documentation system with archive script and directory structure.

Checkpoint: Documentation System Enhancements: - Added /api-docs/html route to serve TypeDoc HTML documentation - Added JSDoc documentation to AIChatBox, AudioPlayer, and DashboardLayout components - Created GitHub Action workflow for documentation CI (auto-regenerate on push) - Updated typedoc.json to include new component entry points - All documentation features tested and working

Checkpoint: Added comprehensive JSDoc documentation to client-side hooks and utilities for full-stack IDE support. Updated TypeDoc configuration to include client files and generated 321 HTML documentation pages covering both server and client APIs.

Checkpoint: Added comprehensive JSDoc documentation to key server files for better IDE support:

Checkpoint: Comprehensive documentation update v4.0: Added PRD.md, TECHNICAL_ARCHITECTURE.md, IMPLEMENTATION_GUIDE.md, API_REFERENCE.md, ROADMAP.md, and updated todo.md with complete feature tracking and version history.

Checkpoint: Add offline mode for generated audio - cache audio overviews for offline listening

Checkpoint: Implement offline voice preview playback for PWA:

Checkpoint: Implemented automatic pre-caching for favorite voices: - Added preCacheVoicePreviews function for batch pre-caching with progress tracking - Created useFavoritePreCache hook for automatic background pre-caching - Auto-starts pre-caching 2 seconds after page load - Pre-caches newly favorited voices immediately - Added cache status indicator in Favorites tab showing progress - Added "Cache All" button for manual pre-caching - Enhanced voice cards with green dot indicator for cached previews - Added 25 unit tests for pre-caching functionality

Checkpoint: Added voice preview caching feature to reduce API calls and improve playback speed when browsing the voice library. Implementation includes:

Checkpoint: Added Voice Library Enhancement features: - Favorite voices: Users can mark voices as favorites with heart icon toggle - Favorites tab in Voice Library for quick access to saved voices - Select Voice integration: Click "Use This Voice" to pre-populate voice in audio generator - Voice selector dropdown shows favorite voices at top in a separate section - "Browse Library" button in voice selector for easy navigation to full library - Database schema for favorite_voices table with user/voice relationships - Backend tRPC procedures: getFavoriteVoices, isVoiceFavorited, toggleFavoriteVoice - Unit tests for all favorite voice functionality

Checkpoint: Added Voice Library page where users can browse and preview all available ElevenLabs voices:

Checkpoint: Added three new audio generation features:

Checkpoint: Added two new features for audio generation:

Checkpoint: Implemented comprehensive Audio Service that integrates all advanced features: multi-model fallback for script generation, checkpoint-based generation for long content, content caching for efficiency, and ElevenLabs TTS for high-quality audio output. All 85 tests passing across all four feature modules.

Checkpoint: Implemented Content Caching system with database schema (content_cache table), content fingerprinting via SHA-256 hashing, cache lookup/storage with TTL, cache invalidation for source changes, and hit rate metrics. All 25 tests passing.

Checkpoint: Implemented Checkpoint-Based Generation system with database schema (generation_checkpoints table), chunk-based processing for large documents, progress saving at configurable intervals, and resume functionality. All 23 tests passing.

Checkpoint: Implemented Multi-model Fallback System with automatic retry logic, error classification, backup model chain (gemini-2.5-flash → gpt-4o-mini → claude-3-5-haiku), exponential backoff, and metrics tracking. All 12 tests passing.

Checkpoint: Initial project setup with NotebookLM Clone - project initialized with server, database, and user authentication features. Ready for development of core NotebookLM functionality including document upload, AI-powered analysis, and audio overview generation.

Checkpoint: Added two new course generation features:

Checkpoint: NotebookLM Clone - CivicNotes: A comprehensive AI-powered learning platform with notebook management, source uploads, AI chat, audio podcasts, flashcards, quizzes, and course generation. Fixed TypeScript error by removing unused updateCourseQualityScore function.

Checkpoint: Implemented three new course generation enhancements:

Checkpoint: Course Generation Optimization Sprint - Implemented 5 major optimizations:

Checkpoint: Fixed 4 UI issues: 1. Fixed HTML tags showing in course description on dashboard cards - added stripHtml function to properly render plain text 2. Made course/lesson notes section collapsed by default - changed isExpanded initial state to false 3. Fixed tabs spacing in achievements section - changed from grid cols-5 to flex wrap for better mobile responsiveness 4. Added hamburger menu for mobile navigation on Progress page - added AppDrawer and header with Menu button

Checkpoint: NotebookLM Clone - Complete implementation with: Source management (PDF/text/URL upload with AI extraction), AI-powered notebook creation, Interactive Q&A chat with source citations, Audio overview generation with ElevenLabs TTS, RAG-based semantic search using Qdrant vector database, and responsive dark theme UI. All features functional and tested.

Checkpoint: Fixed broken notebook detail page after "My Generated Content" removal: - Restored MyGeneratedContent.tsx page component from git history - Re-added getGeneratedContent and getAllGeneratedContent tRPC procedures to routers.ts - Updated App.tsx routing to include MyGeneratedContent page at /notebook/:notebookId/generated - Verified the notebook view now shows filter tabs (All, Analytics, Quiz, Flashcards, etc.), action buttons (Add source, Generate, Chat, Record), and Courses section

Rollback to e239fe6

Rollback to c8b87022

Checkpoint: Fixed 404 error when clicking on a notebook. The issue was twofold: 1) Missing leading slash on the /notebook/:notebookId route in App.tsx, and 2) Missing route for /notebook/:notebookId/generated which multiple pages navigate to. Added the missing route that maps to NotebookDetail component.

Checkpoint: Removed My Generated Content page and cleaned up all related code: - Deleted MyGeneratedContent.tsx page file - Removed routes from App.tsx (/generated and /notebook/:notebookId/generated) - Removed "My Content" menu item from AppDrawer (both mobile and desktop) - Removed unused Sparkles icon import from AppDrawer - Updated navigation in AudioOverviewGenerator, ContentGenerator, CourseWizard, and QuickTemplatesSheet to redirect to notebook view instead of removed page - Removed getGeneratedContent and getAllGeneratedContent router procedures - Deleted related test files (confirmDialog.test.ts, getAllGeneratedContent.test.ts) - Removed unused invalidation call in ContentGenerator

Checkpoint: Chat Flow Enhancement: Skip source selection when clicking Chat button and new Add to Chat bottom sheet with Camera, Photos, Files buttons, Research/Web search toggles, and Add to project/Choose style options

Checkpoint: Refactored content generation flow: 1. Removed Microlearning option from Add to Chat menu in NotebookView 2. Refactored ContentGenerator to show templates first (Briefing, Study Guide, Flashcards, Quiz, AI Course) 3. After selecting template, shows source selection with Upload New Sources button 4. For AI Course: navigates to course creation wizard with pre-selected sources 5. For other templates: starts generation process directly 6. Updated Generate button in MyGeneratedContent to use new ContentGenerator flow

Checkpoint: Microlearning Optimization Sprint - Added:

Checkpoint: Initial project checkpoint - NotebookLM Clone with server, database, and user authentication features initialized

Checkpoint: Fixed UI bug where checkboxes were always visible on course cards. Now checkboxes only appear when user clicks "Select Courses" button to enter selection mode. Added selection mode toggle with Cancel button to exit selection mode.

Checkpoint: Fixed bug where course descriptions showed raw HTML tags (like &lt;h2&gt;) instead of plain text on the Generated Content page. Added stripHtml utility function that uses DOMParser to extract text content from HTML, and applied it to course description displays in both the Courses filter view and the All filter view.

Checkpoint: NotebookLM Clone (CivicNotes) with complete implementation: notebook management, source upload (PDF/text/URL), AI-powered chat with sources, audio overview generation, study guide creation, flashcards, quizzes, and responsive UI design.

Checkpoint: Initial NotebookLM Clone implementation with: notebook management, source upload (PDF/text/URL), AI-powered chat with sources, audio overview generation, study guide creation, and dark theme UI design.

Checkpoint: Fixed magic link email sending bug by switching from SMTP to SMTP2GO HTTP API. The sandbox environment blocks outbound SMTP connections, so the email service now uses the SMTP2GO REST API which works correctly. Added vitest tests for the new email implementation.

Checkpoint: Initial project setup with core features: notebook management, source upload/processing with RAG, AI chat with citations, audio overview generation, and user authentication. Includes complete database schema, tRPC routers, and frontend UI components.

Checkpoint: Added detailed progress percentage indicator for file processing and background upload queue system:

Checkpoint: File Upload UX Improvements: - Added timeout/retry mechanism for large file processing (5-minute timeout, 3 retry attempts) - Added cancel button during processing phase to abort long-running uploads - Added file size warnings before upload for files over 10MB with detailed dialog - Added comprehensive test suite (30 tests) for all upload UX features

Checkpoint: Fixed PDF upload getting stuck in "Uploading" state: 1. Added missing handlers for Excel and PowerPoint file types in handleFileUpload function 2. Improved upload progress UI to show "Processing" state with helpful message when server is extracting text and indexing 3. Added status field to uploadProgress state to differentiate between uploading and processing phases

Checkpoint: Added two new features to the My Courses page:

Checkpoint: Added two new features to the My Courses page:

Checkpoint: Added course filtering by notebook and Create Course quick action button to My Courses page: - Added notebook filter dropdown that shows only notebooks with courses - Added "Create Course" button in page header - Created CreateCourseSheet component with two-step flow: 1. Select a notebook (with search and recent notebooks) 2. Select sources from the notebook - Courses now display which notebook they belong to - Empty state updated to use the new Create Course flow

Checkpoint: Added hamburger menu to My Courses page with AppDrawer component for consistent navigation across the app. The header now includes a hamburger menu button, back arrow, app logo, and app title.

Checkpoint: Fixed course-notebook relationship issue: - Updated getCoursesWithProgress() to only return courses belonging to valid notebooks - Updated getCoursesByUserId() to filter courses by valid notebooks - Updated myCourses.test.ts to create notebooks before courses (required for proper testing) - All tests passing

Checkpoint: Fixed My Courses page showing incorrect course count (115 courses when user has none). The issue was caused by test data accumulating in the database from automated tests that used userId=1. Changes made: 1. Deleted test courses from the database 2. Updated test files to use high user IDs (99000+) to avoid conflicts with real users 3. Added afterEach cleanup to test files to prevent test data accumulation 4. Fixed test input schemas to match current API requirements

Checkpoint: Removed the "In Progress" section from the notebooks page that was showing stuck generation tasks. Also removed the associated activeGenerations query that was polling every 3 seconds.

Checkpoint: Initial project setup with web-db-user template configured. Ready for feature implementation including notebook management, source uploads, AI chat, and audio overview generation.

Checkpoint: Restored lost features from commit b48101a: - Sources filter tab restored in My Generated Content page - Source selection handlers restored (toggleSourceSelection, handleSelectAllSources, handleDeselectAllSources, handleBulkDeleteSources, confirmBulkDeleteSources) - Batch delete sources mutation restored - Sources view with source list and management UI restored - "Show sources" button removed from action bar - Sources Batch Delete Confirmation Dialog added

Checkpoint: Fixed course generation stuck at 83% issue: - Added 90-second timeout for LLM calls in course generation - Added stale generation detection (auto-mark as failed after 30 minutes) - Added "Retry Generation" option for failed courses - Added failed status badge on course cards - Added periodic stale course check (every 5 minutes) - Added unit tests for retry and stale detection

true message

Checkpoint: Updated home page hero section and features heading based on visual editor changes: - Changed main heading from "Understand Anything" to "Learn & Evolve" - Changed features section heading from "Powerful Features for Every User" to "Ready to use templates to use"

Checkpoint: Removed left Sources column from Chat page to provide more space for conversation area. The sidebar is now completely hidden, and the chat interface spans the full width of the page.

Checkpoint: Fixed breadcrumb navigation across all pages - clicking "My Notebooks" now correctly navigates to /notebooks instead of the landing page. Updated ChatHistory.tsx, MyCourses.tsx, and MyGeneratedContent.tsx.

Checkpoint: Fixed breadcrumb navigation in Generated Content page to show correct path (My Notebooks → Notebook Name → Generated Content) and ensure all breadcrumb links navigate to the correct pages. The breadcrumb now dynamically shows the notebook name when viewing generated content from within a specific notebook, and shows a simplified path when viewing all generated content globally.

Checkpoint: Added breadcrumb navigation to MyGeneratedContent, ChatHistory, and MyCourses pages for complete navigation consistency across the application. All pages now have consistent breadcrumb navigation that helps users understand their location and navigate back to parent pages.

Checkpoint: Implemented comprehensive breadcrumb navigation and page naming standards:

Checkpoint: Fixed source filtering bug where filters were not properly synchronized between UI and backend query. Removed redundant local filtering logic in SourceFilterSheet and ensured all filters (search, file type, status) work through backend query. Also un-hid the sidebar to make the filter functionality accessible to users.

Checkpoint: Removed the "Show sources" button from the Generated Content page action bar as requested by user

Checkpoint: Added source search and filtering functionality

Checkpoint: Added Sources filter tab in notebook header with ability to view all uploaded sources, select/deselect individual sources, Select All, Deselect All, and bulk delete functionality with confirmation dialog.

Checkpoint: Fixed bug where stale/orphaned "In Progress" generation tasks were showing on My Notebooks page:

Checkpoint: Fixed course generation to include all 11 content types per topic: 1. Introduction (text lesson) 2. Lesson 1: Understanding [topic] fundamentals (text lesson) 3. Lesson 2: Why [topic] works better (text lesson) 4. Lesson 3: Implementing [topic] in practice (text lesson) 5. Real-world examples (examples lesson) 6. Reflection question (reflection lesson) 7. Flash cards (flashcard lesson) 8. Topic summary (summary lesson) 9. Quiz (quiz lesson) 10. Repetition of previous topic (repetition lesson - if applicable) 11. CivicEd listen and learn (audio lesson with ElevenLabs)

Checkpoint: Fixed bug where course topics showed 0 lessons even though lessons were stored in database. The getWithProgress procedure now fetches and includes lessons for each topic.

Checkpoint: Fixed raw HTML markup (<h2> tags) displaying in course card descriptions. Added regex-based HTML tag stripping in MyCourses.tsx and MyGeneratedContent.tsx to show clean text previews instead of raw HTML markup.

Checkpoint: Fixed bug where "All" filter on Generated Content page showed "No generated content yet" even when courses existed. Updated the empty state condition to check for courses and voice notes in addition to filtered content.

Checkpoint: Fixed course creation bug - topics insert was failing due to missing required values. Added missing procedures (generateContent, share, rename, getWithProgress) to courseRouter. Fixed TypeScript errors in CourseLanding, CourseViewer, MyCourses, MyGeneratedContent, and QuizReviewMode. All tests pass.

Checkpoint: Fixed missing "Show sources" and "Select" menu options in notebook headers

Checkpoint: Initial checkpoint for NotebookLM Clone project with basic setup complete

Checkpoint: Added missing "View sources" and "Select" menus to notebook detail page header. View menu allows filtering sources by type (all/uploaded/generated). Select menu provides quick selection options (all/none/uploaded/generated). Both menus include responsive design and haptic feedback.

Checkpoint: Fixed courses not displaying issue - Updated getCoursesByUserId to accept optional notebookId parameter and fixed frontend to pass notebookId when querying courses. Courses now display correctly in the Generated Content page.

Checkpoint: Implemented three new quiz features:

Checkpoint: Integrated quiz component into course viewer to match standalone quiz behavior

Checkpoint: Integrated FlashcardViewer component into course viewer so flashcards within courses match standalone flashcard behavior

Checkpoint: Replace back arrow with hamburger menu icon on course detail page (CourseLanding.tsx). The hamburger menu now opens the AppDrawer for navigation, providing consistent UX across the app.

Checkpoint: Fixed bug where Lesson 2 and other text lessons displayed raw HTML code instead of rendered content. Changed CourseViewer.tsx to use dangerouslySetInnerHTML for HTML content instead of Streamdown component which was escaping HTML tags.

Checkpoint: Fixed back button navigation in lesson view to return to Course Overview instead of Chat page

Checkpoint: Fixed UX issue in course generation flow where selected tone option description text was not readable. Changed text color to white with 90% opacity when option is selected, ensuring readability against the blue background.

Checkpoint: Made Lesson Notes section collapsible with expand/collapse functionality to save space. Users can now click the header to toggle visibility of the notes textarea and action buttons. Added chevron icons to indicate collapsed/expanded state.

Checkpoint: Fixed floating action button overlaying browser navigation bar at bottom by adding safe-area-inset-bottom padding

Checkpoint: Fixed lesson notes button positioning - moved Save Changes and Delete buttons from top right to bottom right of the notes card for better UX

Checkpoint: Moved the marked (heart/favorite) button from the top header to the bottom of the Course Content section on the course landing page. The button now appears centered below all course topics with a larger size and "Mark as Favorite" label, providing better UX as users can mark favorites after reviewing course content.

Checkpoint: Added back arrow button to course overview page (CourseLanding.tsx) for improved navigation. The back button is positioned in the top-left corner of the header and allows users to navigate back to the previous page.

Checkpoint: Fixed magic link authentication in Manus dev preview environments:

Checkpoint: Fix back arrow navigation 404 error and improve session persistence

Checkpoint: Initial project setup with tRPC + React template, ready for NotebookLM clone features implementation

Checkpoint: Implemented offline indicator badge feature that displays on course cards showing which courses are available offline with their cache size. Created OfflineIndicatorBadge component with green badge styling, updated isCourseCached database function to return cache size data, and integrated the badge into MyCourses page. The badge only appears for cached courses and displays formatted cache size (e.g., "Offline • 5.0 MB").

Checkpoint: Added three new features to enhance the course learning experience:

Checkpoint: Mobile Navigation Enhancements - Added floating action button for course content access on mobile, swipe gestures for lesson navigation, and progress indicator showing current lesson position in header

Checkpoint: Fixed course detail page layout issues: - Repositioned Share button and back arrow to their own row above the title - Back arrow now properly navigates back to notebook - Removed Course Content sidebar from mobile view (hidden on mobile, visible on desktop only) - Improved header layout with separate rows for navigation/actions and title/progress

Checkpoint: Initial NotebookLM clone implementation with: - Multi-source document upload (PDF, audio, video, text) - AI-powered chat interface with source citations - Audio overview generation with ElevenLabs - Vector search using Qdrant - Google Cloud Document AI integration - Complete UI with source management and chat features - All core features tested and functional

Checkpoint: Fixed UI issues in course creation wizard: - Fixed description formatting to properly render HTML/Markdown content using Streamdown component instead of displaying raw HTML tags - Improved Set Tone screen layout with better spacing, responsive grid (1 column on mobile, 2 on desktop), larger touch targets, and improved text hierarchy