chore: lock AI providers and standardize bouquet images to 3:4

.env.example

@@ -1,46 +1,26 @@
-# Gemini
+# Gemini — mood analysis, recipe, florist note
 GEMINI_API_KEY=
 GEMINI_TEXT_MODEL=gemini-2.5-flash-lite
 
-# Image generation
-# IMAGE_PROVIDER: openai | gemini | mock
-#   mock = instant placeholder images, zero API calls (develop without burning quota)
-IMAGE_PROVIDER=openai
-OPENAI_API_KEY=your_openai_api_key_here
+# OpenAI — bouquet image generation & edit (output 768×1024, 3:4)
+OPENAI_API_KEY=
 OPENAI_IMAGE_MODEL=gpt-image-1
-# Bouquet preview (generating flow)
-OPENAI_IMAGE_SIZE=1024x1536
-# Flower catalog batch (scripts/generate-flower-catalog.js) — portrait cards
-OPENAI_IMAGE_CATALOG_SIZE=1024x1536
-OPENAI_IMAGE_CATALOG_QUALITY=low
-GEMINI_IMAGE_MODEL=gemini-3.1-flash-image
 
-# Kakao REST API (shop search for /map)
+# Kakao — shop search (/map) and map display
 KAKAO_REST_API_KEY=
-
-# Kakao Maps JavaScript key (map display on /map — public, client-side)
 PUBLIC_KAKAO_MAP_KEY=
 
-# Supabase (server-side only)
+# Supabase — job storage & generated image uploads
 SUPABASE_URL=
 SUPABASE_SERVICE_ROLE_KEY=
 SUPABASE_STORAGE_BUCKET=flower-bouquets
 
-# adapter-node (Railway / any Node host)
-# Default body limit is 512K — mood-analysis allows up to 10 MB.
+# adapter-node (Railway / Node host)
 BODY_SIZE_LIMIT=10M
-# Public URL after deploy (required for CSRF / form actions).
 # ORIGIN=https://your-app.up.railway.app
-# Real client IP behind Railway's proxy (for rate limiting).
 # ADDRESS_HEADER=x-forwarded-for
 # XFF_DEPTH=1
 
-# Dev seed button: shown only when `npm run dev` (production build hides it).
-# To mute during local dev, set DEV_SEED_MUTED = true in DevSeedButton.svelte.
-# Replace static/dev/bouquet-{s,m,l}.jpg with real photos for richer UI previews.
-
-# Flower catalog (result cards) — one-time batch, not per user request:
-#   npm run generate:flowers -- --dry-run
-#   npm run generate:flowers -- --missing-only
-#   npm run generate:flowers -- --ids 7,14
-# Output: static/flowers/{flowerDB.id}.png
+# Optional: flower catalog batch (npm run generate:flowers)
+# OPENAI_IMAGE_CATALOG_SIZE=1024x1536
+# OPENAI_IMAGE_CATALOG_QUALITY=low