remove existing authentication

.env.example

@@ -1,3 +1,2 @@
-PUBLIC_CLERK_PUBLISHABLE_KEY=pk_something
 CONVEX_DEPLOYMENT=dev:something
 PUBLIC_CONVEX_URL=https://something.convex.cloud

.github/copilot-instructions.md

@@ -136,7 +136,6 @@ EduTools is a SvelteKit-based web application that provides various educational
 Create a `.env` file based on `.env.example`:
 
 ```bash
-PUBLIC_CLERK_PUBLISHABLE_KEY=pk_something
 CONVEX_DEPLOYMENT=dev:something
 PUBLIC_CONVEX_URL=https://something.convex.cloud
 ```
@@ -215,7 +214,6 @@ PUBLIC_CONVEX_URL=https://something.convex.cloud
 
 ## Security Considerations
 
-- Uses Clerk for authentication (when configured)
 - Report security issues via GitHub Security Advisories
 - Environment variables contain sensitive keys - never commit .env files
 - Static games/tools should be reviewed for security if user-generated content is involved

.github/workflows/beta_deploy.yml

@@ -30,7 +30,6 @@ jobs:
 
       - name: Build
         env:
-          PUBLIC_CLERK_PUBLISHABLE_KEY: ${{ secrets.PUBLIC_CLERK_PUBLISHABLE_KEY }}
           PUBLIC_CONVEX_URL: ${{ secrets.PUBLIC_CONVEX_URL }}
         run: |
           pnpm run build

.github/workflows/build.yml

@@ -23,7 +23,6 @@ jobs:
 
       - name: Build
         env:
-          PUBLIC_CLERK_PUBLISHABLE_KEY: ${{ secrets.PUBLIC_CLERK_PUBLISHABLE_KEY }}
           PUBLIC_CONVEX_URL: ${{ secrets.PUBLIC_CONVEX_URL }}
         run: |
           pnpm run build

.github/workflows/deploy.yml

@@ -24,7 +24,6 @@ jobs:
 
       - name: Build
         env:
-          PUBLIC_CLERK_PUBLISHABLE_KEY: ${{ secrets.PUBLIC_CLERK_PUBLISHABLE_KEY }}
           PUBLIC_CONVEX_URL: ${{ secrets.PUBLIC_CONVEX_URL }}
         run: |
           pnpm run build