fix(api): skip CSRF for Bearer-authenticated API clients (#622)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/api/src/common/guards/csrf.guard.spec.ts

@@ -87,6 +87,17 @@ describe("CsrfGuard", () => {
   });
 
   describe("State-changing methods requiring CSRF", () => {
+    it("should allow POST with Bearer auth without CSRF token", () => {
+      const context = createContext(
+        "POST",
+        {},
+        { authorization: "Bearer api-token" },
+        false,
+        "user-123"
+      );
+      expect(guard.canActivate(context)).toBe(true);
+    });
+
     it("should reject POST without CSRF token", () => {
       const context = createContext("POST", {}, {}, false, "user-123");
       expect(() => guard.canActivate(context)).toThrow(ForbiddenException);

apps/api/src/common/guards/csrf.guard.ts

@@ -57,6 +57,11 @@ export class CsrfGuard implements CanActivate {
       return true;
     }
 
+    const authHeader = request.headers.authorization;
+    if (typeof authHeader === "string" && authHeader.startsWith("Bearer ")) {
+      return true;
+    }
+
     // Get CSRF token from cookie and header
     const cookies = request.cookies as Record<string, string> | undefined;
     const cookieToken = cookies?.["csrf-token"];