diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index c1674aa..03bd5d2 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -34,8 +34,8 @@ This is a crowdfunding platform for games with a developer theme. The applicatio
 
 ### Code formatting requirements
 
-- Use TypeScript with explicit types for function parameters and return values, especially in the data layer (`db/`, `src/lib/`)
-- Frontend code (TypeScript, Astro) must pass ESLint checks (`npm run lint`)
+- Every exported function should have a TSDoc comment describing its purpose, parameters, and return value.
+- Before imports or any code, add a comment block to the file that explains its purpose.
 
 ### Data Layer Patterns (Drizzle + Node SQLite)