chore: update .gitignore to explicitly commit env files

- .env, .env.local, and .env*.local will now be explicitly committed if needed.
- Removed the wildcard .env* from being ignored, allowing specific env files to be tracked.

.gitignore

@@ -31,7 +31,9 @@ yarn-error.log*
 .pnpm-debug.log*
 
 # env files (can opt-in for committing if needed)
-.env*
+.env
+.env.local
+.env*.local
 
 # vercel
 .vercel