fix: Worktree scripts use $(pwd) for project root

Scripts now correctly determine project root from current working
directory instead of calculating relative to script location.
This fixes the issue when scripts are called via ${CLAUDE_PLUGIN_ROOT}.

Also adds CLAUDE.md and CHANGELOG.md for development guidance.

Bumps version to 1.0.3.

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

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

CLAUDE.md

@@ -0,0 +1,97 @@
+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Project Overview
+
+Auto-Build is a Claude Code plugin that provides spec-driven build orchestration with autonomous agents. It enables structured feature development through 5 specialized agents, git worktree isolation, and persistent cross-session memory.
+
+## Repository Structure
+
+This is a **plugin repository** with two levels:
+- **Root level**: Marketplace configuration (`.claude-plugin/marketplace.json`)
+- **`plugin/` directory**: The actual plugin that gets installed
+
+```
+auto-build-plugin/
+├── .claude-plugin/marketplace.json   # Marketplace catalog
+├── plugin/                           # Plugin source (copied on install)
+│   ├── .claude-plugin/plugin.json    # Plugin manifest (prefix: "ab")
+│   ├── commands/                     # 8 slash commands (/ab:*)
+│   ├── agents/                       # 5 specialized agents
+│   ├── hooks/hooks.json              # Lifecycle hooks config
+│   ├── hooks/post-install.sh         # Runs after plugin install
+│   ├── scripts/                      # Bash scripts for worktree ops
+│   ├── rules/                        # Auto-build patterns (copied to .claude/rules/)
+│   └── templates/                    # Templates for CLAUDE.md, specs, plans
+└── README.md                         # User-facing documentation
+```
+
+## Key Architecture Concepts
+
+### Plugin Installation Flow
+1. User runs `/plugin install ab@roa2web-tools`
+2. Plugin is copied to Claude Code cache at `${CLAUDE_PLUGIN_ROOT}`
+3. `post-install.sh` hook executes and creates:
+   - `.auto-build-data/` directory structure
+   - `.claude/rules/auto-build-patterns.md`
+   - `.claude/rules/auto-build-memory.md`
+   - `CLAUDE.md` (if missing)
+
+### Script Path Resolution
+Scripts in `plugin/scripts/` are called via `${CLAUDE_PLUGIN_ROOT}/scripts/` but operate on the **current working directory** (user's project). Scripts must use `$(pwd)` for project root, not relative paths from script location.
+
+### Memory System (Bidirectional)
+- **JSON files** (`.auto-build-data/memory/*.json`): Searchable via `/ab:memory-search`
+- **Markdown** (`.claude/rules/auto-build-memory.md`): Auto-loaded by Claude Code
+
+### Agent Context Awareness
+`spec-writer` and `planner` agents read CLAUDE.md and auto-build-memory.md to respect project conventions.
+
+## Commands Reference
+
+| Command | Implementation |
+|---------|---------------|
+| `/ab:spec <name>` | `commands/spec.md` → launches `agents/spec-writer.md` |
+| `/ab:build <name>` | `commands/build.md` → launches `agents/planner.md` then `agents/coder.md` |
+| `/ab:qa-review` | `commands/qa-review.md` → loops `agents/qa-reviewer.md` + `agents/qa-fixer.md` |
+| `/ab:worktree <action>` | `commands/worktree.md` → calls `scripts/worktree-*.sh` |
+| `/ab:memory-save` | `commands/memory-save.md` → saves to JSON + syncs to markdown |
+| `/ab:memory-search` | `commands/memory-search.md` → searches JSON files |
+| `/ab:status` | `commands/status.md` |
+| `/ab:help` | `commands/help.md` |
+
+## Development Guidelines
+
+### Modifying Scripts
+When editing `plugin/scripts/*.sh`:
+- Use `PROJECT_ROOT="$(pwd)"` - never calculate from `BASH_SOURCE`
+- Scripts execute from plugin cache but operate on user's project
+- Reference plugin files via relative paths from script location
+
+### Adding Commands
+Create `.md` file in `plugin/commands/` with frontmatter:
+```yaml
+---
+description: Short description
+argument-hint: <required> [optional]
+---
+```
+
+### Adding Agents
+Create `.md` file in `plugin/agents/` with frontmatter:
+```yaml
+---
+name: agent-name
+description: What it does
+model: sonnet|opus|haiku
+color: blue|green|red
+---
+```
+
+### Version Updates
+**IMPORTANT**: When making any changes to the plugin, bump the version in BOTH files so users can update:
+- `.claude-plugin/marketplace.json` → `plugins[0].version`
+- `plugin/.claude-plugin/plugin.json` → `version`
+
+Also update `CHANGELOG.md` with the changes.