Tell agents about stored git credentials; give Claude Code the user's git config

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -3,6 +3,14 @@
 All notable changes to CodeCraft. Versions follow [Semantic Versioning](https://semver.org/);
 until 1.0, minor versions may contain breaking changes.
 
+## [Unreleased]
+
+### Fixed
+
+- Agents now know that git credentials are stored (hosts, no secrets) and no longer search the
+  environment for them; the system prompt explains `git push` just works and how to read the token
+  for REST calls without printing it. Claude Code runs get the user's git credentials and identity too.
+
 ## [v202611-00031] – 2026-11-15
 
 ### Fixed