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>

plugin/README.md

@@ -31,7 +31,7 @@ Auto-Build is a Claude Code plugin that provides autonomous feature implementati
        ↓
    spec-writer agent
        ↓
-   spec.md created in .auto-build-data/specs/
+   spec.md created in .auto-build/specs/ (git-tracked!)
        ↓
 /ab:build feature-name
        ↓
@@ -49,10 +49,12 @@ Auto-Build is a Claude Code plugin that provides autonomous feature implementati
        ↓
 /ab:memory-save
        ↓
-   patterns.json, gotchas.json updated
+   patterns.json, gotchas.json in .auto-build/memory/ (git-tracked!)
    + .claude/rules/auto-build-memory.md synced (auto-loaded!)
 ```
 
+**New in v1.0.6**: Specs, plans, and memory are now git-tracked, enabling multi-developer collaboration!
+
 ---
 
 ## Commands
@@ -130,20 +132,26 @@ user-project/                       # Your project
 │   │   └── auto-build-memory.md    # Updated by /ab:memory-save
 │   └── settings.json
 │
-└── .auto-build-data/               # Runtime data (gitignored)
-    ├── specs/{feature-name}/
-    │   ├── spec.md
-    │   ├── plan.md
-    │   └── status.json
+├── .auto-build/                    # ⭐ COMMITTED TO GIT - shared with team
+│   ├── specs/{feature-name}/
+│   │   ├── spec.md                 # Feature specification
+│   │   ├── plan.md                 # Implementation plan
+│   │   └── status.json             # Build status
+│   └── memory/
+│       ├── patterns.json           # Searchable via /ab:memory-search
+│       ├── gotchas.json            # Searchable via /ab:memory-search
+│       └── sessions/               # Session history
+│
+└── .auto-build-data/               # GITIGNORED - local only
     ├── worktrees/
-    │   └── worktree-registry.json
-    ├── memory/
-    │   ├── patterns.json           # Searchable via /ab:memory-search
-    │   ├── gotchas.json            # Searchable via /ab:memory-search
-    │   └── sessions/
-    └── cache/qa-iterations/
+    │   └── worktree-registry.json  # Local worktree tracking
+    └── cache/qa-iterations/        # Temporary QA cache
 ```
 
+**Data Separation (v1.0.6)**:
+- `.auto-build/` - Git-tracked: specs, plans, memory (shared with team)
+- `.auto-build-data/` - Gitignored: worktrees, cache (local only)
+
 ---
 
 ## Agents
@@ -236,9 +244,9 @@ Auto-Build is designed to be portable:
 1. **Plugin-based**: Installs via official Claude Code plugin system
 2. **Self-contained**: Everything lives in plugin directory
 3. **No external dependencies**: Uses only Claude Code agents and Bash scripts
-4. **Clean separation**: Runtime data in `.auto-build-data/` (gitignored)
+4. **Clean separation**: Shared data in `.auto-build/` (git), local data in `.auto-build-data/` (gitignored)
 5. **Cross-platform**: Uses @import (git-friendly), not symlinks
-6. **Team sharing**: Git-friendly, works on all platforms
+6. **Team sharing**: Specs, plans, and memory are git-tracked for multi-developer collaboration
 
 ---