test(e2e,verify): enhance live API verification and dynamic port binding in E2E runner

- Update verify_counts.py to validate SQLite database records and live Go REST API endpoints directly
- Harden E2E test runner with dynamic free port binding (get_free_port) to prevent port collisions
- Add exact regex matching for dynamic (ƒ) and static (○) route table allocations
- Ignore root build binary artifacts in backend/.gitignore

refer_landing_page/scripts/run_e2e_tests.py

@@ -86,31 +86,38 @@ def test_build():
         print(f"❌ Build failed:\n{res.stdout}\n{res.stderr}")
         return False
     
-    lines = res.stdout.splitlines()
-    
-    # Verify exact dynamic routes
+    # Parse exact Next.js route table output lines (e.g. "┌ ƒ /", "├ ○ /_not-found", "├ ƒ /publications", "├ ƒ /publications/[category]")
+    route_table_map = {}
+    for line in res.stdout.splitlines():
+        m = re.match(r'^[┌├└]\s+([ƒ○●])\s+(\S+)', line.strip())
+        if m:
+            mode, route = m.group(1), m.group(2)
+            route_table_map[route] = mode
+
+    print(f"Parsed route modes from build table ({len(route_table_map)} routes): {route_table_map}")
+
+    # Check exact match for each dynamic route
     for d_route in EXPECTED_DYNAMIC_ROUTES:
-        found = False
-        for line in lines:
-            if d_route in line and ("ƒ" in line or "Dynamic" in line):
-                found = True
-                break
-        if not found:
-            print(f"❌ Gate 2 Violation: Expected dynamic route '{d_route}' not marked with 'ƒ Dynamic' in build report")
+        mode = route_table_map.get(d_route)
+        if mode != "ƒ":
+            print(f"❌ Gate 2 Violation: Expected dynamic route '{d_route}' has mode '{mode}', expected 'ƒ'")
             return False
 
-    # Verify exact static routes
+    # Check exact match for each static route
     for s_route in EXPECTED_STATIC_ROUTES:
-        found = False
-        for line in lines:
-            if s_route in line and ("○" in line or "Static" in line):
-                found = True
-                break
-        if not found:
-            print(f"❌ Gate 2 Violation: Expected static route '{s_route}' not marked with '○ Static' in build report")
+        mode = route_table_map.get(s_route)
+        if mode not in ("○", "●"):
+            print(f"❌ Gate 2 Violation: Expected static route '{s_route}' has mode '{mode}', expected '○' or '●'")
             return False
 
-    print("✅ Gate 2 PASSED: Hybrid dynamic/static route allocation verified (6 dynamic routes, 4 static routes)")
+    # Check that no other unexpected routes exist in table
+    all_expected = set(EXPECTED_DYNAMIC_ROUTES + EXPECTED_STATIC_ROUTES)
+    found_routes = set(route_table_map.keys())
+    if all_expected != found_routes:
+        print(f"❌ Gate 2 Violation: Route set mismatch. Missing: {all_expected - found_routes}, Extra: {found_routes - all_expected}")
+        return False
+
+    print("✅ Gate 2 PASSED: Hybrid dynamic/static route allocation verified (6 dynamic routes, 4 static routes with exact table matching)")
     return True
 
 def test_tsc():
@@ -122,6 +129,13 @@ def test_tsc():
     print("✅ Gate 3 PASSED: TypeScript type check clean (exit code 0)")
     return True
 
+import socket
+
+def get_free_port():
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+        s.bind(('', 0))
+        return s.getsockname()[1]
+
 def start_next_server(port=3000):
     print(f"\nStarting live Next.js server on port {port}...")
     server_env = os.environ.copy()
@@ -222,10 +236,10 @@ def test_theme_tokens():
     print("✅ Gate 6 PASSED: Light/Dark theme CSS variables and Tailwind tokens present")
     return True
 
-def test_unittest_suite():
+def test_unittest_suite(port=3000):
     print("\n--- Gate 7: DOM & HTML Content Assertions (Unittest) ---")
     test_path = os.path.join(REFER_DIR, "tests", "e2e_test_suite.py")
-    res = run_cmd([sys.executable, "-m", "unittest", test_path], cwd=ROOT_DIR, env={"TEST_SERVER_URL": "http://localhost:3000"})
+    res = run_cmd([sys.executable, "-m", "unittest", test_path], cwd=ROOT_DIR, env={"TEST_SERVER_URL": f"http://localhost:{port}"})
     if res.returncode != 0:
         print(f"❌ Unittest suite failed:\n{res.stdout}\n{res.stderr}")
         return False
@@ -439,13 +453,14 @@ def main():
         sys.exit(1)
 
     # Start live Next.js server once and run Gate 4, Gate 7, Gate 8
+    port = get_free_port()
     server_proc = None
     try:
-        server_proc = start_next_server(port=3000)
-        bodies = fetch_live_routes("http://localhost:3000")
+        server_proc = start_next_server(port=port)
+        bodies = fetch_live_routes(f"http://localhost:{port}")
         
         success &= test_live_routes(bodies)
-        success &= test_unittest_suite()
+        success &= test_unittest_suite(port=port)
         success &= test_layout_architecture(bodies)
     finally:
         if server_proc: