fix: remove git dependency for crates.io compatibility

Author: hghalebi

Cargo.lock

@@ -94,14 +94,15 @@ name = "example_20_enterprise_server"
 path = "src/examples/example_20_enterprise_server.rs"
 
 [dependencies]
-# Core MCP SDK - using development branch for latest features
-# Note: Optional git dependency for MCP functionality
-rmcp = { git = "https://github.com/modelcontextprotocol/rust-sdk", branch = "main", features = [
-    "server",
-    "client",
-], optional = true }
-
-# Alternative crates.io version (when available)
+# Core MCP SDK - development version from git (for local development)
+# NOTE: This is commented out for crates.io publishing since git dependencies aren't allowed
+# Uncomment for local development with full MCP support
+# rmcp = { git = "https://github.com/modelcontextprotocol/rust-sdk", branch = "main", features = [
+#     "server",
+#     "client",
+# ], optional = true }
+
+# Alternative: Use crates.io version when available
 # rmcp = { version = "0.1", features = ["server", "client"], optional = true }
 
 # Essential async runtime
@@ -142,7 +143,6 @@ sha2 = "0.10"
 tempfile = "3.0"
 
 [features]
-default = ["mcp"]
-mcp = ["rmcp"]
-examples-only = [
-] # For users who just want the educational code without MCP dependencies
+default = [] # No features by default for crates.io compatibility
+# mcp = ["rmcp"]  # Commented out until rmcp is available on crates.io
+examples-only = [] # Educational examples without external MCP dependencies