chore: Release v0.20.2 - Fix GitHub Actions workflow

This release fixes the GitHub Actions workflow to properly upload all
platform binaries. No code changes from v0.20.1.

Changes:
- Cargo.toml: Version 0.20.1 → 0.20.2
- CHANGELOG.md: Added v0.20.2 release notes
- README.md: Updated version references
- .github/workflows/release.yml: Added fail_on_unmatched_files: false

Version: 0.20.2

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

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

Author: DavidLiedle

CHANGELOG.md

@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [0.20.2] - 2025-10-09
+
+### Fixed
+- **GitHub Actions Workflow**: Fixed release workflow to properly upload build artifacts
+  - Added `fail_on_unmatched_files: false` to prevent "already_exists" errors
+  - Ensures all platform binaries are uploaded to releases
+
 ## [0.20.1] - 2025-10-09
 
 ### Fixed

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ferrix"
-version = "0.20.1"
+version = "0.20.2"
 edition = "2021"
 authors = ["David Liedle", "Claude <noreply@anthropic.com>"]
 description = "A production-ready terminal multiplexer with tmux/screen parity, crash recovery, and multi-client support"

README.md

@@ -23,7 +23,7 @@
 
 Ferrix is a modern terminal multiplexer that combines the reliability of GNU Screen with features from Tmux, while exploring new possibilities with Rust's safety and performance. The name combines "Fe" (iron - representing Rust's memory safety) with "Matrix" (representing the matrix of terminal sessions).
 
-> **⚠️ Alpha Release (v0.20.1)**: Ferrix is feature-complete with tmux/screen parity, but still in alpha testing. It includes multi-client session support, session persistence with buffer restoration, automatic session cleanup, and polished UX features including contextual help, enhanced mouse support, and intelligent error messages. Crash recovery is available via `--recover` flag (experimental). **Not recommended for production use yet** - see [Known Limitations](#known-limitations) below.
+> **⚠️ Alpha Release (v0.20.2)**: Ferrix is feature-complete with tmux/screen parity, but still in alpha testing. It includes multi-client session support, session persistence with buffer restoration, automatic session cleanup, and polished UX features including contextual help, enhanced mouse support, and intelligent error messages. Crash recovery is available via `--recover` flag (experimental). **Not recommended for production use yet** - see [Known Limitations](#known-limitations) below.
 
 ## ✨ Features
 
@@ -316,7 +316,7 @@ cargo bench
 
 ## 🗺️ Development Status
 
-### Current Version: v0.20.1
+### Current Version: v0.20.2
 
 Ferrix is a **working terminal multiplexer** with essential features implemented. While still in active development, it provides a functional alternative for basic terminal multiplexing needs.