chore: bump version to 0.2.1 for release

Version bump to enable trusted publishing via GitHub Actions.
No functional changes — CI, coverage, and documentation only.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Alex

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## 0.2.1
+
+- Add CI workflow, Codecov coverage reporting, and GitHub Actions gem release
+- Add comprehensive README with badges, API reference, and capability tables
+- Add SimpleCov with 95% minimum coverage enforcement (141 tests, 99.56% line coverage)
+- Add Rakefile for gem release task
+
 ## 0.2.0
 
 - Generalize API from `supports_schema?(model, thinking:)` to `supports?(model, capability, context: {})`

lib/llm_capabilities/version.rb

@@ -2,5 +2,5 @@
 # typed: true
 
 module LLMCapabilities
-  VERSION = "0.2.0"
+  VERSION = "0.2.1"
 end