chore: clean up repo for public release

- Remove BMAD framework, IDE configs, dev screenshots, test files,
  internal docs, and backup files
- Rename keep-notes/ to memento-note/
- Update all references from keep-notes to memento-note
- Add Apache 2.0 license with Commons Clause (non-commercial restriction)
- Add clean .gitignore and .env.docker.example

memento-note/components/direction-initializer.tsx

@@ -0,0 +1,23 @@
+'use client'
+
+import { useEffect } from 'react'
+
+/**
+ * Sets document direction (RTL/LTR) on mount based on saved language.
+ * Runs before paint to prevent visual flash.
+ */
+export function DirectionInitializer() {
+  useEffect(() => {
+    try {
+      const lang = localStorage.getItem('user-language')
+      if (lang === 'fa' || lang === 'ar') {
+        document.documentElement.dir = 'rtl'
+        document.documentElement.lang = lang
+      } else {
+        document.documentElement.dir = 'ltr'
+      }
+    } catch {}
+  }, [])
+
+  return null
+}