docs: replace mermaid diagram with interactive map in README

docs/README.md

@@ -2,33 +2,9 @@
 
 Architecture artifacts for pi-dashboard, generated by the `project-diagramming-mermaid` + `project-diagramming-archify` skills (per-project `docs/` convention).
 
-## Overview
+## Interactive map
 
-- **Source of truth**: [`pi-dashboard.mmd`](./pi-dashboard.mmd)
-- **Rendered** (via `mmdc`, mermaid-cli 11.16.0):
-  - [`diagrams/pi-dashboard.png`](./diagrams/pi-dashboard.png) (@2x, white bg)
-  - [`diagrams/pi-dashboard.svg`](./diagrams/pi-dashboard.svg) (vector)
-- **Interactive map** (Archify, 9/9 showcase checks): [`pi-dashboard-map.html`](./pi-dashboard-map.html) — open in a browser for pan/zoom, search, theme toggle, route tracing
-- **Archify spec** (JSON IR): [`archify/pi-dashboard.architecture.json`](./archify/pi-dashboard.architecture.json)
-
-## Diagram (Mermaid)
-
-Renders natively in Obsidian; shows as ASCII in pi via the `pi-mermaid` extension.
-
-```mermaid
-flowchart LR
-  EXT["dashboard.ts pi extension"] -->|"writes JSON"| SF[("state files ~/.pi/agent/dashboard")]
-  REM["remote machines .13 .51"] -->|"ssh cat *.json, 5s timeout + cooldown"| ST["state.go"]
-  SF -->|"readLocalStates"| ST
-  ST -->|"AgentState"| MAIN["main.go bubbletea TUI"]
-  CFG["pi-dashboard.yaml"] -->|"loadConfig"| MAIN
-  MAIN -->|"2s poll tick"| ST
-  MAIN -->|"table + detail"| UI["Table + Detail panes"]
-  UI -->|"Enter"| AT["tmux / zellij attach"]
-  UI -->|"d"| HK["hunk diff"]
-  UI -->|"Tab"| TX["tuxedo todo.txt"]
-  UI -->|"Del"| SF
-```
+[▶ Open the interactive map](./pi-dashboard-map.html) — self-contained HTML; open in a browser for pan/zoom, search, theme toggle, route tracing.
 
 ## Regenerate