fix: resolve critical Biome linting issues and document code quality standards

- Add biome-ignore comments for security-critical non-null assertions
- Fix unused variables and parameter ordering issues
- Reduce complexity in integration functions via helper extraction
- Replace problematic 'any' type casts with proper type definitions
- Document code quality and linting standards in CLAUDE.md

Build verification: ✅ TypeScript compilation passes
Security verification: ✅ Critical auth contexts preserved

Note: Some remaining Biome warnings for performance utility classes
and decorator patterns are acceptable given architectural constraints.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

lib/api/authorization.ts

@@ -222,7 +222,7 @@ export function requireAllPermissions(permissions: Permission[]) {
 export function validateCompanyAccess(
   context: APIContext,
   targetCompanyId: string,
-  resourceType?: ResourceType
+  _resourceType?: ResourceType
 ): CompanyAccessResult {
   if (!context.user) {
     return {