Zenjibad/headroom-stats-plugin

Install

Headroom proxy ──writes──> ~/.headroom/proxy_savings.json (grows continuously)
                                 │
Host half (DSH process)          ▼
  └─ one-time env probe: cmd /c echo %HEADROOM_SAVINGS_PATH%&echo %HEADROOM_WORKSPACE_DIR%&echo %USERPROFILE%
       (DSH host sandbox exposes no direct env access; fetched via subprocess)
  └─ fs service stat/readText → snake_case→camelCase reshape
  └─ webServer route GET /headroom-stats/api → JSON snapshot
                                 │
Client bundle (browser)          ▼
  └─ single 5s poller → fetch(/headroom-stats/api) → snapshot fan-out to two seats
       ├─ settings.section (id headroom-stats)       → full dashboard
       └─ conversation.composer.dock (id headroom-dock) → stats line

Add Zenjibad/headroom-stats-plugin to your DSH config (web profile) to enable.