fix(cli): remove BetterAuthOptions generic type from better-auth temp…

[narasaka]

Prior to this commit, any plugins added to the betterauth setup would not have inference and would just break builds. This commit removes the generic type and fixes betterauth's plugins/extensions inferences.

Before the fix:
The admin() plugin has a few additional methods you can use such as api.auth.userHasPermission(), but it is not seen / inferred here.

After the fix:
All the methods that the plugin provides are now available / inferred properly.

Note:

• This is using the latest versions of better-auth (v1.4.3) and better-t-stack (v3.6.5)

Summary by CodeRabbit

• Refactor
  • Simplified authentication initialization templates across all supported database systems (Prisma, Drizzle, MongoDB, Workers) and runtime environments. Generated authentication setup code now features cleaner, more straightforward signatures that are easier to understand and maintain while preserving all existing functionality.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

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[coderabbitai]

Walkthrough

The handlebars template for better-auth server configuration was updated to remove explicit generic type parameters from betterAuth factory function calls. BetterAuthOptions type imports were also removed, simplifying the TypeScript signature across all ORM/runtime branches.

Changes

Cohort / File(s)	Summary
Better-Auth Template Generics Removal apps/cli/templates/auth/better-auth/server/base/src/index.ts.hbs	Removed generic type parameter <BetterAuthOptions> from betterAuth factory calls; removed BetterAuthOptions from imports across Prisma, Drizzle, Workers, Mongoose, and None conditional branches

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~5 minutes

• Verify the change is consistently applied across all five ORM/runtime branches
• Confirm that removing the generic type parameter does not break type inference in the build

Poem

🐰 Hops of joy! <Generic> tags fade away,
Simpler auth shines bright today,
Types inferred, no need to say,
Five branches blessed—hip hip hooray! 🎉

Pre-merge checks and finishing touches

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: removing the BetterAuthOptions generic type from better-auth templates across all ORM/runtime branches, which directly matches the file modifications summarized.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[AmanVarshney01]

Looks good! Thanks @narasaka