security: Remove hardcoded API keys from scripts

IMPORTANT: This is an open source project!
- Removed hardcoded Zhipu API key
- All API keys now require environment variables
- Reduced key display in logs (first 8 chars only)

Set keys via environment:
  export GROQ_API_KEY="your-key"
  export ZHIPU_API_KEY="your-key"
  export ANTHROPIC_API_KEY="your-key"
  export COHERE_API_KEY="your-key"

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: gHashTag

scripts/multi_provider_hybrid.py

@@ -604,7 +604,7 @@ def main():
 
     # Get API keys from environment
     groq_key = os.environ.get("GROQ_API_KEY")
-    zhipu_key = os.environ.get("ZHIPU_API_KEY", "fcbb5dadc5ea462284f5475a04daa174.Ei5KkZb0WQMwasmd")
+    zhipu_key = os.environ.get("ZHIPU_API_KEY")
     anthropic_key = os.environ.get("ANTHROPIC_API_KEY")
     cohere_key = os.environ.get("COHERE_API_KEY")
 
@@ -617,13 +617,13 @@ def main():
 
     print("\nAvailable Providers:")
     if groq_key:
-        print(f"  ✓ Groq: {groq_key[:20]}...")
+        print(f"  ✓ Groq: {groq_key[:8]}***")
     if zhipu_key:
-        print(f"  ✓ Zhipu: {zhipu_key[:20]}...")
+        print(f"  ✓ Zhipu: {zhipu_key[:8]}***")
     if anthropic_key:
-        print(f"  ✓ Anthropic: {anthropic_key[:20]}...")
+        print(f"  ✓ Anthropic: {anthropic_key[:8]}***")
     if cohere_key:
-        print(f"  ✓ Cohere: {cohere_key[:20]}...")
+        print(f"  ✓ Cohere: {cohere_key[:8]}***")
 
     # Initialize hybrid with available providers
     try:

scripts/zhipu_glm4_test.py

@@ -219,13 +219,17 @@ def main():
     print(f"\nφ² + 1/φ² = {phi_result:.10f}")
     print(f"Trinity identity verified: {abs(phi_result - 3.0) < 0.0001}")
 
-    # Get API key
+    # Get API key from environment
     api_key = os.environ.get("ZHIPU_API_KEY")
     if not api_key:
-        # Try hardcoded key for testing
-        api_key = "fcbb5dadc5ea462284f5475a04daa174.Ei5KkZb0WQMwasmd"
+        print("\n" + "=" * 70)
+        print("ERROR: ZHIPU_API_KEY not set!")
+        print("Run: export ZHIPU_API_KEY='your-key-here'")
+        print("Get key at: https://open.bigmodel.cn")
+        print("=" * 70)
+        return
 
-    print(f"\nAPI Key: {api_key[:20]}...")
+    print(f"\nAPI Key: {api_key[:8]}***")
 
     # Initialize client
     try: