chore: bump version to 0.6.5 for comprehensive documentation release

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Co-Authored-By: Claude <[email protected]>

Author: noahgift

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pmcp"
-version = "0.6.4"
+version = "0.6.5"
 edition = "2021"
 authors = ["PAIML Team"]
 description = "High-quality Rust SDK for Model Context Protocol (MCP) with full TypeScript SDK compatibility"