Update documentation: reflect Layers 1-3 completion

Updated README.md and ARCHITECTURE.md to reflect current implementation
status. All three layers are now complete and functional.

Changes:
- README.md: Added Layer 2 (AI Memory) and Layer 3 (Big Five) features
- README.md: Added MCP tools list and usage examples
- README.md: Added Big Five personality traits explanation
- ARCHITECTURE.md: Updated Layer 2 and 3 status to Complete
- ARCHITECTURE.md: Updated implementation strategy phases
- Archived old documentation in docs/archive/old-versions/

Current status:
- Layer 1 ✅ Complete: Pure memory storage
- Layer 2 ✅ Complete: AI interpretation + priority scoring
- Layer 3 ✅ Complete: Big Five personality analysis
- Layer 4 🔵 Planned: Game systems and companion features
- Layer 5 🔵 Future: Distribution and sharing

docs/archive/old-versions/README.md.layer1

@@ -0,0 +1,94 @@
+# aigpt
+
+Simple memory storage for Claude with MCP support.
+
+**Layer 1: Pure Memory Storage** - A clean, SQLite-based memory system with ULID identifiers.
+
+## Features
+
+- 🗄️ **SQLite Storage**: Reliable database with ACID guarantees
+- 🔖 **ULID IDs**: Time-sortable, 26-character unique identifiers
+- 🔍 **Search**: Fast content-based search
+- 🛠️ **MCP Integration**: Works seamlessly with Claude Code
+- 🧪 **Well-tested**: Comprehensive test coverage
+
+## Quick Start
+
+### Installation
+
+```bash
+# Build
+cargo build --release
+
+# Install (optional)
+cp target/release/aigpt ~/.cargo/bin/
+```
+
+### CLI Usage
+
+```bash
+# Create a memory
+aigpt create "Remember this information"
+
+# List all memories
+aigpt list
+
+# Search memories
+aigpt search "keyword"
+
+# Show statistics
+aigpt stats
+```
+
+### MCP Integration with Claude Code
+
+```bash
+# Add to Claude Code
+claude mcp add aigpt /path/to/aigpt/target/release/aigpt server
+```
+
+Then use in Claude Code:
+- "Remember that tomorrow will be sunny"
+- "Search for weather information"
+- "Show all my memories"
+
+## Storage Location
+
+Memories are stored in: `~/.config/syui/ai/gpt/memory.db`
+
+## Architecture
+
+This is **Layer 1** of a planned multi-layer system:
+
+- **Layer 1** (Current): Pure memory storage
+- **Layer 2** (Planned): AI interpretation with priority scoring
+- **Layer 3** (Planned): User evaluation and diagnosis
+- **Layer 4** (Planned): Game systems and companion features
+
+See [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md) for details.
+
+## Documentation
+
+- [Layer 1 Details](docs/LAYER1.md) - Technical details of current implementation
+- [Architecture](docs/ARCHITECTURE.md) - Multi-layer system design
+
+## Development
+
+```bash
+# Run tests
+cargo test
+
+# Build for release
+cargo build --release
+
+# Run with verbose logging
+RUST_LOG=debug aigpt server
+```
+
+## License
+
+MIT
+
+## Author
+
+syui