docs: add VitePress documentation site

- 22 content pages across Guide, Concepts, and Reference sections
- Custom indigo/cyan theme with Lucide icons and Mermaid diagrams
- GitHub Actions workflow for GitHub Pages deployment
- Live preview: https://mempalace-docs.netlify.app/

website/guide/getting-started.md

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+# Getting Started
+
+## Installation
+
+Install MemPalace from PyPI:
+
+```bash
+pip install mempalace
+```
+
+### Requirements
+
+- Python 3.9+
+- `chromadb>=0.5.0` (installed automatically)
+- `pyyaml>=6.0` (installed automatically)
+
+No API key required for the core local workflow. After installation, the main storage and retrieval path runs locally.
+
+### From Source
+
+```bash
+git clone https://github.com/milla-jovovich/mempalace.git
+cd mempalace
+pip install -e ".[dev]"
+```
+
+## Quick Start
+
+Three steps: **init**, **mine**, **search**.
+
+### 1. Initialize Your Palace
+
+```bash
+mempalace init ~/projects/myapp
+```
+
+This scans your project directory and:
+- Detects people and projects from file content
+- Creates rooms from your folder structure
+- Sets up `~/.mempalace/` config directory
+
+### 2. Mine Your Data
+
+```bash
+# Mine project files (code, docs, notes)
+mempalace mine ~/projects/myapp
+
+# Mine conversation exports (Claude, ChatGPT, Slack)
+mempalace mine ~/chats/ --mode convos
+
+# Mine with auto-classification into memory types
+mempalace mine ~/chats/ --mode convos --extract general
+```
+
+Two mining modes plus one extraction strategy:
+- **projects** — code and docs, auto-detected rooms
+- **convos** — conversation exports, chunked by exchange pair
+- **general extraction** — an `--extract general` option for conversation mining that classifies content into decisions, preferences, milestones, problems, and emotional context
+
+### 3. Search
+
+```bash
+mempalace search "why did we switch to GraphQL"
+```
+
+That gives you a working local memory index.
+
+## What Happens Next
+
+After the one-time setup, you don't run MemPalace commands manually. Your AI uses it for you through [MCP integration](/guide/mcp-integration) or a [Claude Code plugin](/guide/claude-code).
+
+Ask your AI anything:
+
+> *"What did we decide about auth last month?"*
+
+It calls `mempalace_search` automatically, gets verbatim results, and answers you. You never type `mempalace search` again.
+
+## Next Steps
+
+- [Mining Your Data](/guide/mining) — deep dive into mining modes
+- [MCP Integration](/guide/mcp-integration) — connect to Claude, ChatGPT, Cursor, Gemini
+- [The Palace](/concepts/the-palace) — understand wings, rooms, halls, and tunnels