update lexicon

docs/DOCS.md

@@ -2,32 +2,72 @@
 
 ## Overview
 
-MCP server for AI memory. Reads/writes core.md and memory.md. Nothing more.
+MCP server for AI memory. Reads/writes core.json and memory/*.json in atproto lexicon record format.
 
 ## Design
 
 - AI decides, tool records
 - File I/O only, no database
 - 4 MCP tools: read_core, read_memory, save_memory, compress
-- Simple, unbreakable, long-lasting
+- Storage format: atproto getRecord JSON
 
 ## MCP Tools
 
 | Tool | Args | Description |
 |------|------|-------------|
-| read_core | none | Returns core.md content |
-| read_memory | none | Returns memory.md content |
-| save_memory | content: string | Overwrites memory.md |
-| compress | conversation: string | Reads memory.md + conversation, writes compressed result to memory.md |
+| read_core | none | Returns core.json record |
+| read_memory | none | Returns latest memory record |
+| save_memory | content: string | Creates new memory record (version increments) |
+| compress | conversation: string | Same as save_memory (AI compresses before calling) |
 
 compress note: AI decides what to keep/discard. Tool just writes.
 
 ## Data
 
 ```
-~/.config/aigpt/
-├── core.md      ← read only (identity, settings)
-└── memory.md    ← read/write (memories, grows over time)
+~/Library/Application Support/ai.syui.gpt/   (macOS)
+~/.local/share/ai.syui.gpt/                  (Linux)
+├── core.json           ← read only, rkey: self
+└── memory/
+    ├── {tid1}.json     ← version 1
+    ├── {tid2}.json     ← version 2
+    └── {tid3}.json     ← version 3 (latest)
+```
+
+## Record Format
+
+core (single record, rkey: self):
+```json
+{
+  "uri": "at://{did}/ai.syui.gpt.core/self",
+  "value": {
+    "$type": "ai.syui.gpt.core",
+    "did": "did:plc:xxx",
+    "handle": "ai.syui.ai",
+    "content": {
+      "$type": "ai.syui.gpt.core#markdown",
+      "text": "personality and instructions"
+    },
+    "createdAt": "2025-01-01T00:00:00Z"
+  }
+}
+```
+
+memory (multiple records, rkey: tid):
+```json
+{
+  "uri": "at://{did}/ai.syui.gpt.memory/{tid}",
+  "value": {
+    "$type": "ai.syui.gpt.memory",
+    "did": "did:plc:xxx",
+    "content": {
+      "$type": "ai.syui.gpt.memory#markdown",
+      "text": "# Memory\n\n## ..."
+    },
+    "version": 5,
+    "createdAt": "2026-03-01T12:00:00Z"
+  }
+}
 ```
 
 ## Architecture
@@ -35,8 +75,8 @@ compress note: AI decides what to keep/discard. Tool just writes.
 ```
 src/
 ├── mcp/server.rs   ← JSON-RPC over stdio
-├── core/reader.rs  ← read core.md, memory.md
-├── core/writer.rs  ← write memory.md
+├── core/reader.rs  ← read core.json, memory/*.json
+├── core/writer.rs  ← write memory/{tid}.json
 └── main.rs         ← CLI + MCP server
 ```
 
@@ -46,20 +86,20 @@ When compress is called, AI should:
 - Keep facts and decisions
 - Discard procedures and processes
 - Resolve contradictions (keep newer)
-- Don't duplicate core.md content
+- Don't duplicate core.json content
 
 ## Usage
 
 ```bash
-aigpt serve          # start MCP server
-aigpt read-core      # CLI: read core.md
-aigpt read-memory    # CLI: read memory.md
-aigpt save-memory "content"  # CLI: write memory.md
+aigpt server             # start MCP server
+aigpt read-core          # CLI: read core.json
+aigpt read-memory        # CLI: read latest memory
+aigpt save-memory "..."  # CLI: create new memory record
 ```
 
 ## Tech
 
-- Rust, MCP (JSON-RPC over stdio), file I/O only
+- Rust, MCP (JSON-RPC over stdio), atproto record format, file I/O only
 
 ## History