Add checklist to featured guidelines

docs/mini-apps/featured-guidelines/overview.mdx

@@ -19,4 +19,45 @@ This section covers how to build high-quality, successful mini apps for the Base
   Meeting these guidelines is a prerequisite for featured placement, but ***does not guarantee placement.*** Base holds a very high bar for featured placement.
 </Note>
 
+### Featured placement checklist
+
+Use this checklist to quickly validate your mini app meets the Featured Guidelines. All items are required unless marked “when applicable”.
+
+* Authentication  
+  * In-app authentication stays within the Base app with no external redirects.   
+  * No email/phone verification inside the app   
+  * Allow exploration pre‑sign‑in when possible
+* Onboarding flow  
+  * Display an educational landing page or carousel explaining the purpose of the app & how to get started   
+  * App only requests essential personal information, with clear context  
+  * Display user’s avatar and username (**no 0x addresses**)   
+* Base compatibility   
+  * App is client-agnostic, with no hard-coded Farcaster text or links, or other client-specific behavior  
+  * Use neutral wording (e.g., “Share to Feed”) and do not deeplink to other clients for features supported in the Base app  
+  * App uses a paymaster for sponsored transactions (Base Paymaster recommended)  
+  * Batch sequential actions with EIP‑5792 (when applicable)
+* Layout  
+  * Key action for users to take is visible and centered on page   
+  * App has a bottom navigation bar or side menu to easily access core flow   
+  * Include labels under icons; test across device sizes  
+* Load time  
+  * App loads within **3 seconds**  
+  * In-app actions complete within **1 second**  
+  * Loading indicators are shown during actions  
+* Usability   
+  * App supports **light and dark modes** consistently with sufficient contrast  
+  * Use semantic color tokens for theming  
+  * App has minimum **44px touch targets**  
+  * Avoid hover‑only interactions  
+* App metadata   
+  * App description is clear, concise, and user-focused   
+  * Manifest is publicly accessible at `/.well-known/farcaster.json` with required fields (`accountAssociation`, `frame`, `primaryCategory`, `tags`)  
+  * Embed metadata implemented; images/text meet size/length constraints  
+  * App icon is **1024×1024 px**, PNG, **no transparency**, readable at small sizes and referenced via `iconUrl`  
+  * App cover photo is **high quality**, no typos/clutter, **no Base logo**, **no team photos**
+* Notifications  
+  * Title ≤ 32 chars; body ≤ 128; `targetURL` ≤ 1024 and same domain as the mini app  
+  * Respect cadence (well below 1 every 30s, ≤ 100/day); send at relevant times  
+  * Track CTR and disabled rates; iterate based on analytics
+