docs(claude.md): sync with current project state

Update architecture (remove webui reference), file structure (add setup.sh,
launch.sh, launch.bat, hooks/), auth (credentials now in ~/.claude), and
development workflow (use setup.sh instead of manual .env copy).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CLAUDE.md

@@ -13,25 +13,31 @@ Two containers managed by Docker Compose:
 - **`claude`** — Claude Code CLI (`node:20-alpine`), runs as the built-in `node` user (UID 1000), isolated to an internal-only Docker network
 - **`proxy`** — Squid forward proxy (`alpine:3.21`), `squid` user, bridges the internal network to the internet with an egress allowlist
 
-Key Docker network property: `claude-internal` has `internal: true`, meaning Docker adds no default gateway. The `claude` and `webui` containers physically cannot reach the internet without going through the `proxy` container.
+Key Docker network property: `claude-internal` has `internal: true`, meaning Docker adds no default gateway. The `claude` container physically cannot reach the internet without going through the `proxy` container.
 
 Auth supports three modes (checked at startup by `claude.sh`):
 - `ANTHROPIC_API_KEY` — API key
 - `CLAUDE_CODE_OAUTH_TOKEN` — 1-year token from `claude setup-token` (headless-friendly)
-- Neither set — Claude Code prompts for browser login on first run; port 54545 is published for the OAuth callback. Credentials persist in the `claude-config` named volume.
+- Neither set — Claude Code prompts for browser login on first run; port 54545 is published for the OAuth callback. Credentials persist in `~/.claude` on the host.
 
 ## File Structure
 
 ```
 docker-claude/
-├── claude.sh               # Control script: start/stop/run/update/logs/status/shell
+├── claude.sh               # Control script: start/stop/update/logs/status/shell
+├── setup.sh                # First-time setup wizard (Docker check + auth config)
+├── launch.sh               # Folder-picker launcher for macOS/Linux
+├── launch.bat              # Folder-picker launcher for Windows
+├── build.sh                # Build images locally (development)
 ├── docker-compose.yml      # Service definitions and network topology
 ├── claude/
-│   └── Dockerfile          # Claude Code (node:20-alpine, UID 1000)
+│   └── Dockerfile          # Claude Code stable release (node:20-alpine, UID 1000)
 ├── proxy/
 │   ├── Dockerfile          # Squid proxy sidecar (alpine:3.21, squid user)
 │   └── squid.conf          # Squid ACL config — egress allowlist lives here
-├── .env.example            # Template for ANTHROPIC_API_KEY, WEBUI_PASSWORD, etc.
+├── hooks/
+│   └── pre-commit          # Enforces executable bit on shell scripts
+├── .env.example            # Template for credentials and options
 ├── .gitignore              # Excludes .env and logs
 ├── .dockerignore           # Keeps .env out of build context
 └── README.md               # User documentation
@@ -40,8 +46,7 @@ docker-claude/
 ## Development Workflow
 
 ```bash
-chmod +x claude.sh build.sh
-cp .env.example .env                      # set ANTHROPIC_API_KEY
+./setup.sh                                # first-time: configure Docker check + auth
 cd /path/to/project && ./claude.sh start  # start proxy + launch Claude (pulls images, mounts CWD)
 ./claude.sh update                        # pull latest images from registry
 ./build.sh                                # build images locally (development)
@@ -49,7 +54,7 @@ cd /path/to/project && ./claude.sh start  # start proxy + launch Claude (pulls i
 
 ## Git Hooks
 
-A pre-commit hook lives in `hooks/` and enforces the executable bit on `claude.sh` and `build.sh`. Activate it once after cloning:
+A pre-commit hook lives in `hooks/` and enforces the executable bit on all shell scripts. Activate it once after cloning:
 
 ```bash
 git config core.hooksPath hooks