chore: align version and changelog with actual tags/releases

v0.6.0 tag was deleted (no user-facing changes). Revert version
in __init__.py and remove v0.6.0 section from CHANGELOG.md to
match the actual state: latest tag/release is v0.5.0.

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CHANGELOG.md

@@ -2,28 +2,6 @@
 
 All notable changes to this project will be documented in this file.
 
-## [0.6.0] - 2026-06-22
-
-### Features
-
-- Add self-updating quality badges to README
-- Enforce mandatory PR reviews with automated checks
-
-### Bug Fixes
-
-- Bridge test suite gaps — lint scripts, include integration tests
-- Badge regex patterns and doc_coverage double-percent
-- Generate self-contained SVG badges instead of shields.io JSON
-- Auto_merge handles single-token workflow (self-approval)
-
-### Refactor
-
-- Consolidate CI workflows to eliminate redundant runs
-
-### Revert
-
-- Remove v0.6.0 release (no user-facing changes)
-
 ## [0.5.0] - 2026-06-21
 
 ### Packaging

src/gitea_runner_manager/__init__.py

@@ -1,3 +1,3 @@
 """Gitea Runner Manager — lean CLI for managing Gitea Actions runners."""
 
-__version__ = "0.6.0"
+__version__ = "0.5.0"