Add LLM-Supervised concept diagram to README

Three-panel comparison (LLM-Embedded vs MCP Server vs LLM-Supervised)
with detailed Mnemon implementation showing hooks, brain/organ split,
and sub-agent delegation. Drawio source + 2x PNG export.

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

Author: Grivn

README.md

@@ -36,14 +36,40 @@ This means: **memory management logic moves from prompt to code — deterministi
 | **MCP Server** | Tool provider via MCP protocol | MemCP |
 | **LLM-Supervised** | External supervisor of a standalone binary | Mnemon |
 
+<p align="center">
+  <img src="docs/diagrams/llm-supervised-concept.png" width="720" alt="LLM-Supervised Architecture — three patterns compared, with detailed Mnemon implementation showing hooks, brain/organ split, and sub-agent delegation" />
+  <br />
+  <sub>The LLM-Supervised pattern: hooks drive the lifecycle, the host LLM makes judgment calls, the binary handles deterministic computation.</sub>
+</p>
+
 See [Design & Architecture](docs/DESIGN.md) for details.
 
 ## Quick Start
 
-### Claude Code
+### Install
+
+**Homebrew** (macOS / Linux):
+
+```bash
+brew install mnemon-dev/tap/mnemon
+```
+
+**Go install**:
 
 ```bash
 go install github.com/mnemon-dev/mnemon@latest
+```
+
+**From source**:
+
+```bash
+git clone https://github.com/mnemon-dev/mnemon.git && cd mnemon
+make install
+```
+
+### Claude Code
+
+```bash
 mnemon setup
 ```
 
@@ -52,21 +78,13 @@ mnemon setup
 ### OpenClaw
 
 ```bash
-go install github.com/mnemon-dev/mnemon@latest
 mnemon setup --target openclaw
 ```
 
 This installs the skill and deploys a behavioral guide to `~/.mnemon/prompt/guide.md`. Since hook integration is not yet automated for OpenClaw, provide the guide to your agent and let it self-configure:
 
 > Read `~/.mnemon/prompt/guide.md` and configure yourself to follow its recall/remember workflow.
 
-### From source
-
-```bash
-git clone https://github.com/mnemon-dev/mnemon.git && cd mnemon
-make install && mnemon setup
-```
-
 ### Uninstall
 
 ```bash