feat: full studio build -- light theme, canvas thumbnails, i18n (fa/en)

.cursorrules

@@ -1,6 +1,15 @@
-# Project: CreatorStudio
+# Project: FlatRender
 # A Renderforest-style platform with Video Maker and Image Maker products.
 
+## 🧠 Project Memory — READ THIS FIRST
+# Before starting ANY task, read PROJECT_MEMORY.md at the project root.
+# It contains: completed features, backlog, known bugs, architecture decisions,
+# environment variable status, and the full file map.
+# After completing a task, update PROJECT_MEMORY.md:
+#   - Move item from Backlog → Completed
+#   - Add any new bugs to Known Issues
+#   - Add a row to the Session Log with today's date and what changed
+
 ## Stack
 - Next.js 14 App Router (never use pages/ directory)
 - TypeScript (strict mode, no `any`)
@@ -55,4 +64,16 @@
 - Never install axios — use native fetch
 - Never add console.log to committed code
 - Never create a component larger than 150 lines — split it
-- Never skip TypeScript types on props — always define an interface
+- Never skip TypeScript types on props — always define an interface
+
+## Studio Modules
+- Canvas editor uses React-Konva (never plain HTML5 canvas API)
+- All canvas state lives in Zustand studio-store.ts
+- ffmpeg.wasm runs in a Web Worker only (never on main thread)
+- Studio pages are "use client" — they are 100% client components
+- Timeline px-per-second default: 60 (1 second = 60px wide)
+- Konva Stage base size: 1280x720 (scaled to container)
+- Image editor and Video Studio share the same Layer type interface
+- Server render API uses nexrender for After Effects pipeline
+- Never block UI during ffmpeg processing — always show progress
+- All studio panels are dark theme (bg-gray-900, text-white)