test: add CLI integration tests for MCP host configuration

- Add 27 regression and integration tests for CLI integration
- Create test data directory with mock MCP host config files
- Test CLI argument parsing to Omni model creation
- Test model integration with HOST_MODEL_REGISTRY
- Test reporting integration in CLI commands
- Test host-specific argument handling
- Test error handling and validation
- Test backward compatibility
- Verify readiness for Phase 4 CLI integration implementation

All tests passing (27/27, 100% success rate)

Author: LittleCoinCoin

tests/test_data/configs/mcp_host_test_configs/claude_desktop_config.json

@@ -0,0 +1,4 @@
+{
+  "mcpServers": {}
+}
+

tests/test_data/configs/mcp_host_test_configs/claude_desktop_config_with_server.json

@@ -0,0 +1,12 @@
+{
+  "mcpServers": {
+    "existing-server": {
+      "command": "python",
+      "args": ["server.py"],
+      "env": {
+        "API_KEY": "secret"
+      }
+    }
+  }
+}
+

tests/test_data/configs/mcp_host_test_configs/cursor_mcp.json

@@ -0,0 +1,4 @@
+{
+  "mcpServers": {}
+}
+

tests/test_data/configs/mcp_host_test_configs/cursor_mcp_with_server.json

@@ -0,0 +1,12 @@
+{
+  "mcpServers": {
+    "existing-server": {
+      "command": "node",
+      "args": ["server.js"],
+      "env": {
+        "NODE_ENV": "production"
+      }
+    }
+  }
+}
+

tests/test_data/configs/mcp_host_test_configs/gemini_cli_config.json

@@ -0,0 +1,4 @@
+{
+  "mcpServers": {}
+}
+

tests/test_data/configs/mcp_host_test_configs/gemini_cli_config_with_server.json

@@ -0,0 +1,15 @@
+{
+  "mcpServers": {
+    "existing-server": {
+      "command": "python",
+      "args": ["server.py"],
+      "env": {
+        "API_KEY": "secret"
+      },
+      "timeout": 30,
+      "trust": true,
+      "cwd": "/path/to/server"
+    }
+  }
+}
+

tests/test_data/configs/mcp_host_test_configs/vscode_mcp.json

@@ -0,0 +1,4 @@
+{
+  "mcpServers": {}
+}
+

tests/test_data/configs/mcp_host_test_configs/vscode_mcp_with_server.json

@@ -0,0 +1,13 @@
+{
+  "mcpServers": {
+    "existing-server": {
+      "command": "python",
+      "args": ["-m", "server"],
+      "env": {
+        "DEBUG": "true"
+      },
+      "envFile": ".env"
+    }
+  }
+}
+