feat: Move specs and memory to git for multi-developer collaboration (v1.0.6)

BREAKING CHANGE: Specs, plans, and memory moved from .auto-build-data/ (gitignored)
to .auto-build/ (git-tracked) to enable team collaboration.

Changes:
- Specs/plans now in .auto-build/specs/ (shared with team)
- Memory (patterns, gotchas) now in .auto-build/memory/ (shared with team)
- .auto-build-data/ now only contains local data (worktrees, cache)
- Added /ab:migrate command for existing projects
- Removed symlinks from worktree-create.sh (no longer needed)

Benefits:
- Any developer can continue a plan started by another
- Patterns and gotchas shared across team
- Works on Windows/Linux/Mac without symlinks
- Full version history in git

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -2,6 +2,27 @@
 
 All notable changes to Auto-Build plugin.
 
+## [1.0.6] - 2024-12-22
+
+### Changed (BREAKING)
+- **Specs and plans moved to `.auto-build/`** (git-tracked) for multi-developer collaboration
+- **Memory moved to `.auto-build/memory/`** (git-tracked) so team shares learned patterns
+- `.auto-build-data/` now only contains local data (worktrees, cache)
+
+### Added
+- New `/ab:migrate` command for existing projects to migrate from old structure
+- Documentation updates explaining git-tracked vs local data separation
+
+### Removed
+- Symlinks in worktree-create.sh - no longer needed since data is in git
+- Old `.auto-build-data/specs/` and `.auto-build-data/memory/` paths
+
+### Benefits
+- 🤝 Multi-developer collaboration - any developer can continue a plan
+- 🧠 Shared learning - patterns and gotchas available to entire team
+- 🌍 Cross-platform - works on Windows/Linux/Mac without symlinks
+- 📜 Version history - specs/plans/memory changes visible in git
+
 ## [1.0.5] - 2024-12-22
 
 ### Fixed