`remote-mcp-github-oauth` example has vars that override deployment secrets

[mor10]

Problem description

When deploying the Remote MCP GitHub OAuth example as per the documentation, the user lands on a 404 page during the OAuth loop

Cause

wrangler.jsonc contains vars that override any secrets stored using npx wrangler secret put GITHUB_CLIENT_ID etc:

"vars": {
    // replace this in .dev.vars
    "GITHUB_CLIENT_ID": "1234567890",
    "GITHUB_CLIENT_SECRET": "1234567890",
    "COOKIE_ENCRYPTION_KEY": "1234567890"
  },

Solution

Remove the vars from wrangler.jsonc. The project already provides .dev.vars.example which provides sufficient dev environ support.

[mor10]

Note: The "Build a Remote MCP server" tutorial needs to be updated to reflect the changes proposed in #244. I've filed a separate issue and PR for this.