fix: remove 96MB spin binary to fix crates.io publishing

- Remove accidentally committed spin CLI binary (96MB)
- Add examples/spin to .gitignore
- Bump version to 1.5.3
- Package size reduced from 98.2MB to ~2MB

Author: guyernest

.gitignore

@@ -41,3 +41,4 @@ proptest-regressions/
 # Mutation testing
 **/mutants.out*/
 tests/integration/typescript-interop/node_modules/
+examples/spin

CHANGELOG.md

@@ -5,7 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.5.2] - 2025-09-25
+## [1.5.3] - 2025-09-26
+
+### Fixed
+- Removed accidentally committed 96MB spin binary from package
+- Package size reduced from 98.2MB to ~2MB for successful crates.io publishing
+
+## [1.5.2] - 2025-09-25 (Failed to publish)
 
 ### Fixed
 - Release workflow to handle existing releases gracefully

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "pmcp"
-version = "1.5.2"
+version = "1.5.3"
 edition = "2021"
 authors = ["PAIML Team"]
 description = "High-quality Rust SDK for Model Context Protocol (MCP) with full TypeScript SDK compatibility"