feat: Visual Image System - Schema, Storage, and Component Updates

[Peleke]

Summary

Comprehensive visual image system for the Interlinear app, adding support for AI-generated images across all content types.

What's Included

Database Schema (20260107_visual_image_system.sql)

• Image fields on courses, lessons, flashcard decks, user profiles, library texts
• Central image_assets table for generation tracking and metadata
• New ai_tutors table with avatar support
• Helper function get_placeholder_image() for development

Storage Infrastructure (setup-storage-buckets.ts)

• 7 Supabase storage buckets with appropriate size limits
• RLS policies for public read, authenticated write
• Buckets: course-images, lesson-images, deck-images, profile-images, reading-images, tutor-images, generated-images

Component Updates

• CourseCard.tsx - Cover image support with language-themed gradient fallbacks
• CourseHero.tsx - Hero image background with gradient overlays for text readability

Documentation (docs/image-generation-guide.md)

• ComfyUI, FAL.ai, DALL-E workflow options
• Prompt templates for Spanish, Latin, Icelandic themes
• Image specifications and upload processes
• Language theme colors and best practices

Schema Changes

Table	New Fields
courses	cover_image_url, hero_image_url, theme_color, language
lessons	thumbnail_image_url, hero_image_url, icon_type
flashcard_decks	cover_image_url, theme_color, language
user_profiles	avatar_url, display_name
library_texts/readings	cover_image_url, thumbnail_image_url
ai_tutors (new)	name, language, persona, avatar_url, voice_id

Language Theme Fallbacks

• Spanish: Orange/Red/Yellow gradients
• Latin: Amber/Stone/Gold gradients
• Icelandic: Blue/Indigo/Cyan gradients

Related Work

• Consider image opportunities in Lesson Stage System (PR feat: Lesson Stage System (#199) #219) when merged
• Stage-specific images (Learn, Read, Practice, Review, Assess) could enhance the UX

Test Plan

• Run migration on staging database
• Run npx tsx scripts/setup-storage-buckets.ts to create buckets
• Verify CourseCard shows gradient fallbacks correctly
• Verify CourseHero shows gradient fallbacks correctly
• Upload test image to verify storage works
• Test all three language gradients (es, la, is)

🤖 Generated with Claude Code

[Peleke]

Lesson Stage System Image Opportunities (PR #219)

After reviewing the Lesson Stage System components, here are additional image enhancement opportunities:

Stage Progress Bar (StageProgressBar.tsx)

Current: Numbers/checkmarks in circles
Opportunity: Custom stage illustrations

Stage	Current	Could Add
Learn	Number/✓	Lightbulb/book opening illustration
Read	Number/✓	Open book with text illustration
Practice	Number/✓	Dumbbell/exercise illustration
Review	Number/✓	Brain/flashcards illustration
Assess	Number/✓	Trophy/clipboard illustration

LessonStageViewer.tsx

1. Lesson Context Card (lines 357-376)

   • Lesson thumbnail image placeholder
   • Language-themed decorative backgrounds

2. Stage Header (lines 378-413)

   • Stage-specific decorative illustration in corner
   • Language-themed gradient with pattern overlay

Stage Content Components

Component	Current Icon	Image Opportunity
LearnStageContent	ProgressRing	Grammar concept illustrations
PracticeStageContent	Dumbbell	"Training ground" hero illustration
ReviewStageContent	BookMarked	Flashcard deck/memory illustration
AssessStageContent	CheckCircle/XCircle	Success celebration / encouragement illustrations

Database Fields (already in migration)

The lesson_stages table could be extended with:

ALTER TABLE lesson_stages
ADD COLUMN IF NOT EXISTS icon_image_url TEXT,
ADD COLUMN IF NOT EXISTS background_image_url TEXT;

These could be added in a follow-up PR after the base image system is in place.

[Peleke]

🎨 ComfyUI Prompt Templates

Complete prompt structures for Flux Schnell and SDXL for all image types.

---

Generation Settings

Model	Steps	CFG	Sampler	Scheduler
Flux Schnell	4-8	1.0-2.0	euler	normal
SDXL	20-30	7-8	dpmpp_2m	karras

---

1. Course Covers (1024x640 → 400x240)

Spanish 🇪🇸

Flux:

Spanish language learning, warm Mediterranean sunset, orange and red gradient sky, flamenco guitar silhouette, Moorish tile pattern border, minimalist educational design, clean composition, warm lighting

SDXL:

Spanish language course cover art, warm Mediterranean color palette, sunset orange and crimson red tones, flamenco guitar silhouette against gradient sky, intricate Moorish geometric tile pattern as decorative border, modern minimalist educational design, professional composition, warm golden hour lighting, high quality digital illustration
Negative: text, watermark, logo, blurry, low quality, distorted

Latin 🏛️

Flux:

Latin language learning, classical Roman architecture, marble columns, golden amber tones, ancient scroll, laurel wreath, Mediterranean blue accents, scholarly elegant design, timeless aesthetic

SDXL:

Latin language course cover art, classical Roman aesthetic, white marble columns with golden highlights, rich amber and stone tones, aged parchment scroll detail, elegant laurel wreath motif, deep Mediterranean sea blue accents, scholarly timeless atmosphere, museum quality composition, soft directional lighting
Negative: text, watermark, logo, modern elements, blurry, low quality

Icelandic 🇮🇸

Flux:

Icelandic language learning, northern lights aurora, glacier blue and deep indigo, runic stone carving, volcanic mountain silhouette, mystical Nordic atmosphere, clean modern design

SDXL:

Icelandic language course cover art, vibrant aurora borealis dancing across night sky, glacier blue transitioning to deep indigo and purple, ancient runic stone carving details, dramatic volcanic mountain silhouette, mystical Nordic atmosphere with falling snow particles, ethereal northern lighting, high quality digital art
Negative: text, watermark, logo, tropical, warm colors, blurry

---

2. Course Heroes (2048x680 → 1200x400)

Spanish 🇪🇸

Flux:

panoramic Spanish landscape, Alhambra palace silhouette, warm sunset gradient orange to deep red, geometric Moorish patterns along bottom edge, wide cinematic composition, educational banner style

SDXL:

ultra-wide panoramic Spanish landscape banner, iconic Alhambra palace silhouette against dramatic sunset sky, smooth gradient from vibrant orange through crimson to deep burgundy, intricate geometric Moorish arabesque patterns as decorative bottom border, cinematic wide-angle composition, professional educational design, golden hour volumetric lighting, 8k quality
Negative: text, watermark, people, cars, modern buildings, blurry

Latin 🏛️

Flux:

panoramic Roman Forum, classical columns stretching across frame, golden hour light on ancient architecture, marble textures, laurel motifs at edges, wide scholarly banner, timeless elegance

SDXL:

ultra-wide panoramic Roman Forum reconstruction, rows of majestic classical marble columns extending across entire frame, warm golden hour sunlight casting long shadows on ancient stone, detailed marble textures and weathering, elegant laurel wreath border motifs, scholarly museum-quality atmosphere, cinematic composition, volumetric god rays, photorealistic rendering
Negative: text, watermark, tourists, modern elements, ruins, destruction

Icelandic 🇮🇸

Flux:

panoramic Icelandic landscape, dramatic northern lights sky, snow-capped volcanic mountains, runic border decorations, deep blue to purple gradient, mystical wide banner, Nordic atmosphere

SDXL:

ultra-wide panoramic Icelandic landscape banner, spectacular aurora borealis filling night sky with green and purple ribbons, majestic snow-capped volcanic mountains reflected in still water, ancient runic inscription border decoration, smooth gradient from midnight blue to deep violet, mystical ethereal Nordic atmosphere, cinematic drone perspective, 8k photorealistic
Negative: text, watermark, people, buildings, daylight, clouds blocking aurora

---

3. Lesson Thumbnails (768x512 → 300x200)

Flux (template):

[topic] lesson thumbnail, [language] cultural style, [key visual element], educational card design, clean minimal composition, [color palette]

SDXL (template):

educational lesson thumbnail for [topic], [language] cultural aesthetic, featuring [key visual element] as central focus, clean minimal card design suitable for UI, [detailed color palette], soft professional lighting, high quality digital illustration
Negative: text, watermark, cluttered, busy background, low quality

Example - Spanish Greetings Lesson:

Flux: Spanish greetings lesson, two people waving hello, warm friendly atmosphere, orange and yellow tones, simple educational illustration

SDXL: educational lesson thumbnail for Spanish greetings, warm friendly illustration of two stylized figures waving hello, Mediterranean cultural aesthetic, cheerful orange and sunny yellow color palette, clean minimal card design, soft warm lighting, high quality vector-style digital art

---

4. Flashcard Deck Covers (768x512 → 300x200)

Flux:

flashcard deck cover, stack of elegant cards, [language] decorative pattern, [theme color] gradient background, study materials aesthetic, clean design

SDXL:

premium flashcard deck cover design, elegant stack of study cards with rounded corners and subtle shadow, [language] cultural decorative pattern as background texture, smooth [theme color] gradient, professional educational materials aesthetic, centered balanced composition, soft studio lighting
Negative: text, messy, cluttered, low quality, realistic photos

Spanish Vocabulary Deck:
Flux: flashcard deck cover, elegant card stack, Spanish tile pattern, orange to red gradient, vocabulary study aesthetic

Latin Grammar Deck:
Flux: flashcard deck cover, elegant card stack, Roman column motif, amber to gold gradient, classical study aesthetic

Icelandic Runes Deck:
Flux: flashcard deck cover, elegant card stack, runic pattern border, blue to indigo gradient, Nordic study aesthetic

---

5. AI Tutor Avatars (512x512 → 200x200)

Flux:

portrait of [name], [description], friendly approachable expression, [cultural elements], soft lighting, clean background, educational app avatar style

SDXL:

professional portrait of [name] as AI language tutor, [detailed description], warm friendly approachable expression with slight smile, [cultural clothing/elements], soft diffused key lighting with subtle rim light, clean solid [color] background, high quality digital portrait suitable for educational app avatar, semi-realistic stylized rendering
Negative: photorealistic, uncanny valley, harsh shadows, busy background, full body

Example - Spanish Tutor "María":

portrait of María, young Spanish woman with dark wavy hair, warm brown eyes, 
wearing colorful traditional shawl, friendly teacher expression, 
terracotta orange background, educational avatar style

Example - Latin Tutor "Marcus":

portrait of Marcus, distinguished Roman scholar with gray-streaked hair,
wise gentle eyes, wearing simple toga with golden clasp,
scholarly kind expression, parchment cream background, classical avatar style

Example - Icelandic Tutor "Sigrid":

portrait of Sigrid, Nordic woman with blonde braided hair, bright blue eyes,
wearing traditional Icelandic sweater with patterns,
warm welcoming expression, glacier blue background, Nordic avatar style

---

6. Word of the Day Illustrations (1024x768 → 400x300)

Flux:

illustration of "[word]" meaning [definition], [visual representation], [language] artistic style, educational vocabulary card, [color scheme]

SDXL:

educational vocabulary illustration for the [language] word "[word]" meaning "[definition]", [detailed visual representation of the concept], [language] cultural artistic style, clean composition suitable for word-of-the-day card, [detailed color scheme matching language theme], soft even lighting, high quality digital illustration
Negative: text, letters, words, typography, cluttered, low quality

Example - Spanish "Mariposa" (butterfly):

illustration of butterfly in flight, vibrant monarch with orange and black wings,
Spanish artistic style with warm colors, flowers in background,
educational vocabulary card, sunset orange and gold palette

Example - Latin "Aqua" (water):

illustration of flowing water, Roman fountain with marble basin,
classical artistic style, Mediterranean blue water,
educational vocabulary card, blue and white palette with gold accents

---

7. Lesson Stage Icons (256x256)

For the 5-stage system (Learn → Read → Practice → Review → Assess):

Learn Stage

Flux: glowing lightbulb with open book, knowledge enlightenment concept, [language] color theme, simple icon style, clean background

SDXL: educational icon of glowing golden lightbulb emerging from open book pages, knowledge and enlightenment concept, [language theme] accent colors, clean minimal icon design, soft glow lighting, transparent or solid color background

Read Stage

Flux: open book with visible text lines, reading concept, [language] decorative bookmark, icon style, clean design

SDXL: educational icon of beautifully open book with stylized text lines on pages, [language] themed decorative bookmark ribbon, reading and comprehension concept, warm inviting design, soft page lighting, minimal clean background

Practice Stage

Flux: dumbbell with pencil, exercise and learning concept, [language] colors, energetic icon style, clean background

SDXL: educational icon combining dumbbell weight with pencil in creative mashup, training and practice concept, [language theme] energetic color palette, dynamic but clean icon design, motivational feel, minimal background

Review Stage

Flux: brain with flashcards orbiting, memory review concept, [language] colors, icon style, neural connections visible

SDXL: educational icon of stylized brain with flashcards orbiting around it, memory and spaced repetition review concept, subtle neural connection lines, [language theme] color accents, clean scientific-educational icon design, soft glow effects

Assess Stage

Flux: trophy with checkmark, achievement assessment concept, [language] colors, celebratory icon style, clean background

SDXL: educational icon of elegant trophy cup with prominent checkmark symbol, achievement and assessment concept, [language theme] accent colors with gold highlights, celebratory but professional icon design, subtle sparkle effects, clean background

---

8. Stage Content Illustrations

Grammar Concept Cards (512x384)

Flux: [grammar concept] visual diagram, educational illustration, [language] style, clean explanatory design, [concept-specific elements]

SDXL: educational grammar illustration explaining [concept], clear visual diagram with [concept-specific elements], [language] cultural design aesthetic, clean professional explanatory style, soft colors that don't distract from learning, high quality instructional art

Training Ground (Practice Stage Hero) (1024x512)

Flux: training arena for language learning, [language] themed gymnasium of the mind, practice equipment made of books and words, energetic motivational atmosphere

Assessment Results

Success Illustration (512x512):
Flux: celebration scene, confetti and stars, golden trophy, achievement unlocked feeling, [language] celebratory colors, joyful educational style

Encouragement Illustration (512x512):
Flux: gentle encouragement scene, seedling growing, progress path ahead, warm supportive atmosphere, [language] soft colors, motivational educational style

---

🔧 Batch Generation Tips

1. Use PNG workflow output for transparency support on icons
2. Generate at 2x resolution then downscale for crisp results
3. Seed lock when iterating on a good composition
4. Flux for speed (4 steps), SDXL for quality (25 steps)
5. Queue multiple prompts with different seeds for variety

---

📁 Output Organization

output/
├── courses/
│   ├── covers/
│   │   ├── spanish-cover-001.png
│   │   ├── latin-cover-001.png
│   │   └── icelandic-cover-001.png
│   └── heroes/
├── lessons/
│   └── thumbnails/
├── flashcards/
│   └── deck-covers/
├── tutors/
│   └── avatars/
├── stages/
│   └── icons/
└── word-of-day/

[claude]

PR Review: Visual Image System

Overall Assessment

This is a well-designed and comprehensive feature that adds visual image support across the Interlinear app. The implementation is thoughtful, with good documentation and fallback strategies. However, there are several important issues that should be addressed before merging.

---

🔴 Critical Issues

1. Missing Database Fields in Query (High Priority)

Location: app/courses/page.tsx:21-36

The page queries courses but doesn't fetch the new cover_image_url and language fields that CourseCard now expects. This will cause the images to never display.

Fix needed:

const { data: courses, error: coursesError } = await supabase
  .from('courses')
  .select(`
    id,
    title,
    description,
    language,
    difficulty_level,
    cover_image_url,  // ADD THIS
    // ... rest of fields
  `)

Impact: Without this, the new image functionality won't work at all on the courses listing page.

2. Next.js Image Configuration Missing placehold.co

Location: next.config.ts:6-22

The migration and documentation reference placehold.co for placeholder images (see get_placeholder_image() function in migration), but this domain is not in the remotePatterns configuration.

Fix needed:

images: {
  remotePatterns: [
    // ... existing patterns
    {
      protocol: 'https',
      hostname: 'placehold.co',
    },
  ],
}

Impact: Placeholder images will fail to load during development/testing.

---

🟡 High Priority Issues

3. Unsafe Non-Null Assertion in Storage Script

Location: scripts/setup-storage-buckets.ts:12-13

Using the ! operator without proper null checking can cause runtime crashes.

Current code:

const supabaseUrl = process.env.NEXT_PUBLIC_SUPABASE_URL!
const supabaseServiceKey = process.env.SUPABASE_SERVICE_ROLE_KEY!

The subsequent check on line 15 helps, but it would be cleaner to handle this more gracefully or move the check before usage.

4. Missing TypeScript Types for Database Changes

The migration adds new fields to multiple tables, but there's no indication that TypeScript types have been updated. This could lead to type errors when developers try to use the new fields.

Recommendation: Generate updated types with:

npx supabase gen types typescript --local > lib/supabase/database.types.ts

5. Pattern ID Collision Potential

Location: components/courses/CourseCard.tsx:95

Using id={pattern-${id}} in the SVG pattern could cause ID collisions if multiple course cards are rendered on the same page (which they are).

Current code:

<pattern id={`pattern-${id}`} ...>

Fix: Use a more unique identifier:

<pattern id={`pattern-course-${id}`} ...>

---

🟢 Code Quality & Best Practices

6. Excellent Fallback Strategy

The language-themed gradient fallbacks are well-designed and provide a great UX when images aren't available. The approach is consistent across both CourseCard and CourseHero.

7. Good Image Optimization

Using Next.js Image component with appropriate sizes prop and fill layout is correct. However, consider:

• Adding placeholder="blur" with blurDataURL for better loading experience
• Using loading="lazy" for below-the-fold images

8. Documentation Quality

The docs/image-generation-guide.md is comprehensive and well-structured. It provides practical guidance for content creators.

Minor suggestion: Add a troubleshooting section for common Next.js Image errors (which are notoriously cryptic).

---

🔵 Security & Performance

9. Storage Security - Good RLS Design

The RLS policies are well-designed:

• Public read access is appropriate for course images
• Authenticated write requirement is correct
• Owner-based update/delete policies protect user data

Note: The storage policy SQL in the script (lines 131-151) needs to be run manually. Consider adding this to the migration or providing a separate SQL file.

10. File Size Limits

The file size limits are reasonable and appropriate for each bucket type. Good to see 10MB limit for AI-generated images which can be larger.

11. MIME Type Restrictions

Good security practice to restrict allowed MIME types. However, consider adding image/avif to the allowed types for better compression (when Next.js supports it).

---

🔵 Database Design

12. image_assets Table Design

The central image registry is a good architectural decision. However:

Concern: The entity_id is stored as TEXT (line 151) but course/lesson IDs are INTEGER in the schema. This could lead to type mismatches.

Recommendation: Consider using UUID for all entities or create a proper foreign key constraint:

entity_id UUID NOT NULL REFERENCES courses(id) ON DELETE CASCADE

Or use a polymorphic approach with proper constraints.

13. Missing Index on Status

Location: supabase/migrations/20260107_visual_image_system.sql:177-178

There are indexes on entity_type/entity_id and asset_type, but queries will likely filter by status as well (e.g., "get all active images").

Recommendation:

CREATE INDEX IF NOT EXISTS idx_image_assets_status ON public.image_assets(status);

14. ai_tutors Table Foreign Keys

The ai_tutors table (line 102) doesn't have a user_id or ownership column, but the RLS policy only allows authenticated users to view. Consider:

• Should this be publicly readable (unauthenticated)?
• Should there be an admin-only write policy?

---

🟣 Testing & Validation

15. Missing Test Coverage

No tests are included for:

• Image upload functionality
• Fallback rendering when images are null
• Error handling for failed image loads

Recommendation: Add E2E tests for the image system, especially the fallback behavior.

16. Test Plan Completeness

The test plan in the PR description is good but missing:

• Test image upload with oversized files (should fail gracefully)
• Test with malformed image URLs
• Test with CORS issues (if applicable)
• Verify RLS policies work as expected

---

📝 Minor Issues

17. Inconsistent Gradient Opacity

Location: components/courses/CourseCard.tsx:24-27 vs components/courses/CourseHero.tsx:27-33

CourseCard uses /20, /10, /20 opacity pattern while CourseHero uses /90, /80, /70. This inconsistency might be intentional (hero should be more prominent), but it should be documented.

18. Magic Numbers

Several magic numbers appear without explanation:

• Gradient overlay colors and opacities
• Image dimensions in comments
• File size limits

Recommendation: Extract these into named constants.

19. SQL Function Immutability

Location: supabase/migrations/20260107_visual_image_system.sql:219

The get_placeholder_image() function is marked as IMMUTABLE, which is correct, but using format() with external URLs could theoretically change if the service changes. This is a very minor concern.

---

✅ What's Done Well

1. Comprehensive feature design - Covers all major use cases
2. Good documentation - The image generation guide is excellent
3. Proper use of Next.js Image - Optimized for performance
4. Graceful degradation - Fallbacks ensure the UI never breaks
5. Language theming - Thoughtful attention to design consistency
6. Safe migrations - Uses IF NOT EXISTS and conditional table checks
7. Storage organization - Separate buckets for different purposes is logical

---

📋 Action Items

Before Merging:

1. ✅ Add missing fields to course queries (Critical)
2. ✅ Add placehold.co to Next.js image config (Critical)
3. ✅ Fix SVG pattern ID collision (High)
4. ✅ Update TypeScript database types (High)
5. ⚠️ Document gradient opacity differences (Medium)
6. ⚠️ Add index on image_assets.status (Medium)
7. ⚠️ Consider image_assets.entity_id type consistency (Medium)

Post-Merge:

• Add E2E tests for image system
• Create example content with images
• Monitor storage costs and usage
• Add image optimization pipeline if needed

---

Summary

This is a solid feature with excellent documentation and thoughtful design. The main issues are integration points where the new schema fields aren't being queried or configured properly. Once the critical issues are addressed, this will be a great addition to the platform.

Recommendation: Request changes for the critical issues, then approve once fixed.

Nice work on the comprehensive approach! 🎨

[claude]

PR Review: Visual Image System

This PR introduces a comprehensive image system with database schema changes, storage infrastructure, component updates, and documentation. Well-structured implementation overall.

Strengths

• Comprehensive documentation in image-generation-guide.md
• Graceful gradient fallbacks for missing images
• Safe migration with IF NOT EXISTS checks
• Good storage script with error handling
• Proper Next.js Image component usage

Critical Issues

1. TypeScript Type Mismatch (HIGH PRIORITY)

Location: components/courses/CourseCard.tsx:19-20, CourseHero.tsx:16-17

The Course interface in lib/services/course.ts does not include cover_image_url, hero_image_url, or theme_color fields that the components expect.

Fix: Add these optional fields to the Course interface in lib/services/course.ts

2. SVG Pattern ID Collisions (BUG)

CourseCard.tsx:102 uses dynamic pattern IDs and CourseHero.tsx:92 uses fixed hero-pattern ID. Multiple component instances will cause SVG conflicts.

Fix: Use React useId() hook for unique pattern identifiers.

3. Missing placehold.co in next.config.ts

The migration uses placehold.co for placeholder images but it is not in remotePatterns.

Fix: Add placehold.co to next.config.ts images.remotePatterns array.

Security Concerns

1. Storage RLS policies allow any authenticated user to upload to any bucket - needs role-based restrictions
2. image_assets table missing UPDATE and DELETE policies

Recommendations

High Priority:

• Update Course TypeScript interface with image fields
• Fix SVG pattern ID collisions using useId()
• Add placehold.co to Next.js config
• Strengthen storage RLS policies with role checks

Medium Priority:

• Add UPDATE/DELETE RLS policies for image_assets
• Add explicit loading lazy attribute to images
• Add test coverage for image components

Low Priority:

• Extract magic numbers to constants
• Add accessibility labels for screen readers
• Document CDN setup in deployment guide

Overall Assessment

Well-architected PR with excellent documentation. Main blockers are TypeScript type mismatches and SVG ID collisions. Ready to merge after high-priority fixes applied.

Status: Approve with changes requested

[claude]

PR Review: Visual Image System

Summary

Comprehensive and well-designed feature adding image support across the platform. Excellent documentation and thoughtful architecture. Overall high-quality work with some critical issues to address.

Critical Issues

1. Missing placehold.co in Next.js Config

The migrations get_placeholder_image() uses placehold.co but its not in next.config.ts remotePatterns. Add it to avoid image load failures.

2. Storage RLS Policies Not Created

CRITICAL SECURITY: Script only prints policies to console, doesnt create them. Buckets will lack security policies. Either programmatically create or add prominent warning.

3. Storage RLS Policy Field Reference

Policies use auth.uid() = owner but Supabase storage uses owner_id. Verify or fix to: auth.uid()::text = owner_id

4. Migration Function Dependency

References update_updated_at_column() without existence check. Will fail if function doesnt exist from prior migration.

High Priority

• Ensure new props properly typed in parent components
• Add loading=lazy to images for better performance
• Remove hardcoded path /Users/peleke/Documents/ComfyUI from docs
• Extract SVG patterns to shared sprite to avoid duplication

Positives

• Excellent documentation in image-generation-guide.md
• Thoughtful dual tracking architecture (URLs + central registry)
• Proper Next.js Image component usage with fill, sizes, priority
• Good language-based gradient fallbacks
• Clean component design with smooth animations

Must Fix Before Merge

1. Add placehold.co to next.config.ts
2. Fix or document storage RLS policy setup
3. Add update_updated_at_column() existence check
4. Remove personal path from documentation

Overall: 8.5/10

Excellent work! Main concerns are security policy automation and config. Once critical issues addressed, production-ready.

Great architecture and implementation!