Arch: Finalize V3 Auth modularization and Unified Agent spec.

- Integrated zero-dependency Auth models and dependencies_v3.py.
- Successfully resolved circular dependency boot loops.
- Verified site_domain search exception via verify_v3_exceptions.py.
- Refined Unified Agent Architecture with Storage Layer and API-driven access details.
- Updated project roadmap and milestones in GEMINI.md.

verify_v3_exceptions.py

@@ -0,0 +1,50 @@
+import requests
+import json
+
+# Configuration
+BASE_URL = "https://dev-api.oneskyit.com" 
+SEARCH_ENDPOINT = f"{BASE_URL}/v3/crud/site_domain/search"
+RESTRICTED_ENDPOINT = f"{BASE_URL}/v3/crud/journal/search"
+
+def test_site_domain_exception():
+    print("--- Testing site_domain guest access (Exception) ---")
+    search_query = {
+        "q": "%",  # Match all for testing
+        "and": []
+    }
+    
+    try:
+        # No Authorization or X-Account-ID headers provided
+        response = requests.post(SEARCH_ENDPOINT, json=search_query)
+        print(f"Status Code: {response.status_code}")
+        
+        if response.status_code == 200:
+            data = response.json()
+            print("SUCCESS: site_domain search allowed without authentication.")
+            print(f"Result count: {len(data.get('data', []))}")
+        else:
+            print(f"FAILED: site_domain search returned {response.status_code}")
+            print(response.text)
+            
+    except Exception as e:
+        print(f"Error during site_domain test: {e}")
+
+def test_restricted_search():
+    print("\n--- Testing restricted search (Should fail) ---")
+    search_query = {"q": "%"}
+    
+    try:
+        response = requests.post(RESTRICTED_ENDPOINT, json=search_query)
+        print(f"Status Code: {response.status_code}")
+        
+        if response.status_code == 403:
+            print("SUCCESS: Restricted search was correctly blocked (403 Forbidden).")
+        else:
+            print(f"FAILED: Restricted search returned {response.status_code} instead of 403.")
+            
+    except Exception as e:
+        print(f"Error during restricted test: {e}")
+
+if __name__ == "__main__":
+    test_site_domain_exception()
+    test_restricted_search()