docs: align the README with the revamped site and the bundled key

The feature list still described a WebGL icosahedron, and the configuration
section claimed the key was required with no fallback even though the repo has
carried REPO_API_KEY since the deploy work. Document the real renderer, the key
precedence (env over repo), the deploy targets and the test layout.

README.md

@@ -4,13 +4,14 @@ a minimalist Magic 8-Ball oracle powered by TypeSafe Jev structured decision int
 
 ## features
 
-- minimal dark brutalist interface with ambient floating particles
+- software-rendered 3D oracle vessel: a hexagonal metal frame with a liquid chamber and a floating hexagonal die, drawn with Canvas 2D + painter's-algorithm depth sorting (no WebGL, so it renders on machines with no GL drivers)
-- 3D interactive floating icosahedron die inside fluid viewport with mouse parallax
+- shake-and-settle roll animation with liquid slosh, per-face lighting, rim glow and a cast shadow
-- realistic shake & liquid surfacing animations with procedural audio chimes
+- the verdict is inked onto the die face as it surfaces, tinted by the decision's sentiment
+- ambient particle field and procedural WebAudio chimes, both toggleable
+- live decision telemetry: calibrated P(favorable), confidence score, latency, cost and the raw JSON payload
+- browser-local query log with instant clipboard copy
+- keyboard shortcuts (`/` to focus, `enter` to ask, `r` to roll), reduced-motion support, and an offline fallback that is labelled as such instead of faking telemetry
 - powered by non-autoregressive `typesafe/jev-1.13` decisions API (calibrated `noul` probabilities, structured sentiment, zero hallucination)
-- live decision telemetry: calibrated probability, confidence score, token cost, and latency
-- query history log with instant clipboard copy
-- fast sub-second responses (~300ms) with lightweight token footprint
 
 ## usage
 
@@ -26,24 +27,48 @@ Runs by default on `http://localhost:3000`.
 
 ## configuration
 
-Configure your OpenRouter API key in `.env`:
+The repo intentionally bundles an OpenRouter key (`REPO_API_KEY` in `server.js`, `worker.mjs` and
+`functions/api/ask.js`) so a fresh clone or a deploy works with nothing configured. Export
+`OPENROUTER_API_KEY` to override it — `GET /api/status` reports which key is live via `keySource`.
+
 ```env
 PORT=3000
 OPENROUTER_API_KEY=sk-or-v1-...
 ```
 
-The key is **required** — there is no bundled fallback. Without it `POST /api/ask`
+Delete the `REPO_API_KEY` constants to require a configured key instead. For Cloudflare, store the
-answers `503` and `GET /api/status` reports `"hasKey": false`. For Cloudflare, store
+override as a secret rather than a plain variable:
-it as a secret instead of a plain variable:
 
 ```bash
 wrangler secret put OPENROUTER_API_KEY
 ```
 
+> The bundled key is readable by anyone who can read this repository, so treat it as public and
+> rotate or remove it before the repo is shared.
+
 ## endpoints
 
-- `GET /api/status` - model status and whether the API key is configured
+- `GET /api/status` — model, engine, and whether a key is configured (`keySource`: `env` | `repo`)
-- `POST /api/ask` - submit query to Jev decisions pipeline
+- `POST /api/ask` — `{ "question": "..." }` returns the verdict, sentiment, calibrated `noul`, confidence, latency, cost and the raw decision payload
+
+## deploy
+
+Three interchangeable targets share the same decision logic:
+
+- **local** — `server.js` (Express) serves both the API and `public/`
+- **Cloudflare Worker** — `worker.mjs` answers `/api/*` and hands everything else to the `ASSETS` binding (`npx wrangler deploy`)
+- **Cloudflare Pages** — `functions/api/*.js` provides the same endpoints alongside the static `public/` directory
+
+## structure
+
+```
+public/js/math3d.js     pure matrix/vector helpers (matrices are column-major)
+public/js/meshes.js     hexagonal vessel + die meshes
+public/js/ball3d.js     software 3D renderer and roll/reveal state machine
+public/js/particles.js  ambient particle field
+public/js/audio.js      procedural WebAudio chimes
+public/js/app.js        DOM wiring, telemetry, query log
+```
 
 ## tests
 
@@ -51,6 +76,10 @@ wrangler secret put OPENROUTER_API_KEY
 npm test
 ```
 
+Covers the 3D geometry (matrices, projection, meshes, verdict lettering) and the decision
+endpoints (key resolution, input validation, hazy-verdict correction, offline fallbacks). The
+renderer modules are pure ES modules, so they run under Node with no browser.
+
 ## license
 
 MIT