docs: add enterprise badges and VitePress documentation site

[jessn-dev]

• Expanded README with comprehensive, high-visibility enterprise badges.

• Scaffolded a complete VitePress documentation site under docs/.

• Added structured guides for installation, configuration, and MCP server usage.

• Included a GitHub Actions workflow to auto-deploy the docs to GitHub Pages.

[jessn-dev]

This pull request completely overhauls our project documentation by introducing a modern, fully-featured documentation site and upgrading our repository landing page.

### 🛡️ Enterprise Badges
- Replaced the default `README.md` badges with a bold, high-visibility block.
- Added comprehensive trackers for NPM Version & Downloads, Node.js version, CI Status, TypeScript, Semantic Release, License, and PRs.
- Included an active **Snyk Vulnerabilities badge** (accurately linked to our NPM registry) and a dynamic **Visitor Traffic tracker**.

### 📚 VitePress Documentation Site
- **Scaffolded VitePress** in the `docs/` directory featuring a beautiful, responsive home page.
- **Overhauled Guides:** Authored professional, technical-writing-standard pages for:
  - Architecture Introduction & Context Problem Rationale
  - Getting Started (Initialization, Validation, Packing)
  - Configuration & Manifest (`agenticscope.toml` semantics)
  - MCP Server Integration & Security boundaries
- **Explicit Client Support:** Clarified that advanced clients (Windsurf, Zed, Claude Desktop) can bypass static files natively by querying the MCP server, and explicitly detailed our universal compilation targets (`.cursorrules`, `CLAUDE.md`, `GEMINI.md`, `AGENTS.md`).

### 🚀 Automated Deployment
- Added npm scripts (`docs:dev`, `docs:build`, `docs:preview`) to `package.json`.
- Integrated a GitHub Actions workflow (`deploy-docs.yml`) to automatically build and deploy the VitePress site to **GitHub Pages** whenever code is merged into `main`.