Initial scaffold: CLAUDE.md, docs, and MCP config

- CLAUDE.md with project structure, DB access, and environment info
- docs/ with placeholder files for modular system, hooks/API, and builder fields
- .claude/settings.json with Playwright and Fetch MCP servers

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

CLAUDE.md

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+# Acai CMS — Project Instructions
+
+This is an Acai CMS website project. Follow these instructions when working with the codebase.
+
+## Environment
+
+- The site runs in Docker, typically at **http://localhost:8080**
+- You can make HTTP requests to test pages, APIs, or form submissions
+- If you need to inspect the live site, use browser tools or HTTP requests to localhost:8080
+
+## Project Structure
+
+```
+.
+├── template/estandar/
+│   ├── modulos/          # Builder modules (visual components)
+│   │   └── <module-id>/
+│   │       ├── index-base.tpl    # Twig template (source)
+│   │       ├── index.tpl         # Compiled template (auto-generated, do NOT edit)
+│   │       ├── style.css         # Module styles
+│   │       └── script.js         # Module JavaScript
+│   ├── css/              # Global CSS
+│   └── js/               # Global JavaScript
+├── hooks/                # PHP hooks (server-side logic)
+├── cms/
+│   ├── data/schema/      # Database table schemas (JSON)
+│   ├── lib/plugins/      # CMS plugins
+│   └── uploads/          # Uploaded media files
+├── .acai                 # Project config (domain, tokens, DB credentials)
+├── .docker/
+│   ├── .env              # Docker environment (DB credentials)
+│   ├── docker-compose.yml
+│   ├── tunnel-url.txt    # Public tunnel URL (if active)
+│   └── bore-db-url.txt   # Database tunnel URL (if active)
+└── database.sql          # Database dump
+```
+
+## Key Concepts
+
+### Modules (`template/estandar/modulos/`)
+Visual components that the site builder uses. Each module is a self-contained unit with its own template (Twig), CSS, and JS. Modules are placed on pages via the drag-and-drop builder.
+
+See [docs/modular-system.md](docs/modular-system.md) for detailed rules.
+
+### General Sections
+Reusable layout blocks (header, footer, sidebars) that appear across multiple pages. They use the same Twig engine as modules but serve a structural purpose.
+
+See [docs/modular-system.md](docs/modular-system.md) for details.
+
+### Hooks (`hooks/`)
+PHP files that execute server-side logic at specific points: before/after page load, on form submission, on API calls, scheduled tasks, etc. Hooks extend the CMS behavior without modifying the core.
+
+See [docs/hooks-and-api.md](docs/hooks-and-api.md) for usage.
+
+## Database Access
+
+When the site is running in Docker, you can connect to the database:
+
+- **Host:** `127.0.0.1`
+- **Port:** Check `.docker/.env` or `docker-compose.yml` for the mapped port (usually 3307+)
+- **Credentials:** Read from `.docker/.env`:
+  - `DB_USERNAME`
+  - `DB_PASSWORD`
+  - `DB_DATABASE`
+
+You can also exec into the container:
+```bash
+docker exec -it dw-<project-name>-db mysql -u root -p<password> <database>
+```
+
+## Acai Core (web-base)
+
+The project workspace contains only the **customization layer** (modules, hooks, schemas, uploads). The CMS core (routing, rendering engine, admin panel, APIs) lives in a separate directory called **web-base** that is mounted as a Docker volume.
+
+If you need to understand core behavior (Twig filters, CmsApi methods, routing, etc.), the web-base path can be obtained from the plugin settings. Do NOT modify web-base files — they are shared across all projects.
+
+## Documentation
+
+- [docs/modular-system.md](docs/modular-system.md) — Modules, general sections, Twig syntax, builder vars, custom filters
+- [docs/hooks-and-api.md](docs/hooks-and-api.md) — PHP hooks, CmsApi, CocoDB, database operations
+- [docs/builder-fields.md](docs/builder-fields.md) — Builder field types, c-form, c-if/c-for/c-class, data-field-type