Initial Auto-Build plugin structure

plugin/hooks/hooks.json

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+{
+  "hooks": [
+    {
+      "name": "post-install",
+      "script": "./hooks/post-install.sh",
+      "description": "Initialize CLAUDE.md and Auto-Build rules in project"
+    }
+  ]
+}

plugin/hooks/post-install.sh

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+#!/bin/bash
+# Post-install hook - runs after plugin installation
+set -e
+
+PROJECT_ROOT="$(pwd)"
+PLUGIN_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+echo "========================================"
+echo "  Auto-Build Post-Install"
+echo "========================================"
+echo ""
+echo "Project: $PROJECT_ROOT"
+echo ""
+
+# 1. Create .claude/rules/ if missing
+mkdir -p "$PROJECT_ROOT/.claude/rules"
+
+# 2. Copy auto-build-patterns.md to project
+echo "Installing Auto-Build patterns..."
+cp "$PLUGIN_DIR/rules/auto-build-patterns.md" "$PROJECT_ROOT/.claude/rules/"
+
+# 3. Create empty auto-build-memory.md (will be populated by /ab:memory-save)
+echo "# Auto-Build Learned Patterns
+
+Last updated: Never
+
+(This file is automatically updated by /ab:memory-save)" > "$PROJECT_ROOT/.claude/rules/auto-build-memory.md"
+
+# 4. Create .auto-build-data/ structure
+echo "Creating .auto-build-data/ structure..."
+mkdir -p "$PROJECT_ROOT/.auto-build-data"/{specs,worktrees,memory/sessions,cache/qa-iterations}
+
+# Initialize memory files
+echo '{"patterns": [], "updated": null}' > "$PROJECT_ROOT/.auto-build-data/memory/patterns.json"
+echo '{"gotchas": [], "updated": null}' > "$PROJECT_ROOT/.auto-build-data/memory/gotchas.json"
+echo '{"worktrees": []}' > "$PROJECT_ROOT/.auto-build-data/worktrees/worktree-registry.json"
+
+# 5. Add .auto-build-data/ to .gitignore if not present
+if [ -f "$PROJECT_ROOT/.gitignore" ]; then
+    if ! grep -q "^\.auto-build-data/" "$PROJECT_ROOT/.gitignore" 2>/dev/null; then
+        echo "" >> "$PROJECT_ROOT/.gitignore"
+        echo "# Auto-Build runtime data (local only)" >> "$PROJECT_ROOT/.gitignore"
+        echo ".auto-build-data/" >> "$PROJECT_ROOT/.gitignore"
+        echo "Added .auto-build-data/ to .gitignore"
+    fi
+else
+    echo "# Auto-Build runtime data (local only)" > "$PROJECT_ROOT/.gitignore"
+    echo ".auto-build-data/" >> "$PROJECT_ROOT/.gitignore"
+    echo "Created .gitignore with .auto-build-data/ entry"
+fi
+
+# 6. Initialize or update CLAUDE.md
+if [ ! -f "$PROJECT_ROOT/CLAUDE.md" ]; then
+    echo "Generating CLAUDE.md from template..."
+    cp "$PLUGIN_DIR/templates/CLAUDE.md.template" "$PROJECT_ROOT/CLAUDE.md"
+    echo "✅ Created CLAUDE.md"
+else
+    # Add Auto-Build imports if not present
+    if ! grep -q "auto-build-patterns.md" "$PROJECT_ROOT/CLAUDE.md"; then
+        echo "" >> "$PROJECT_ROOT/CLAUDE.md"
+        echo "# Auto-Build Integration" >> "$PROJECT_ROOT/CLAUDE.md"
+        echo "@./.claude/rules/auto-build-patterns.md" >> "$PROJECT_ROOT/CLAUDE.md"
+        echo "@./.claude/rules/auto-build-memory.md" >> "$PROJECT_ROOT/CLAUDE.md"
+        echo "✅ Updated CLAUDE.md with Auto-Build imports"
+    else
+        echo "⚠️  CLAUDE.md already has Auto-Build imports"
+    fi
+fi
+
+echo ""
+echo "========================================"
+echo "  Installation Complete!"
+echo "========================================"
+echo ""
+echo "What was installed:"
+echo "  ✅ .claude/rules/auto-build-patterns.md"
+echo "  ✅ .claude/rules/auto-build-memory.md"
+echo "  ✅ .auto-build-data/ structure"
+echo "  ✅ CLAUDE.md (created or updated)"
+echo "  ✅ .gitignore updated"
+echo ""
+echo "Quick Start:"
+echo "  1. Restart Claude Code to load CLAUDE.md"
+echo "  2. Run /ab:help for available commands"
+echo "  3. Create your first spec: /ab:spec \"My Feature\""
+echo ""