Rebrand product to Hesychia (hesychia.ai) (#29) (#32)

## Summary
- Closes #29
- Rename user-facing product from AIML Operations chat to **Hesychia** (headers, sidenav brand, footer, ToS welcome, sample page)
- Update page metadata (`title`, description, Open Graph, `manifest.json` app name)
- Point README / env comments at **hesychia.ai**; keep live API hosts and deploy webroots until infra cutover

## Android display name
Capacitor tree is not on `master` yet ([#28](#28)). Display name / `appName` → **Hesychia** pushed on `ship-android-capacitor-20` so it lands with that wrap. Package id stays `com.aimloperations.chat` (Play identity; rename later if desired).

## Out of scope (per issue)
- New logo artwork (#30)
- Backend system-prompt identity (`chat_backend` #20)

## Test plan
- [ ] Web UI shows **Hesychia** in header / sidenav / footer (no old product name)
- [ ] Browser tab title and PWA manifest name are Hesychia
- [ ] Footer still credits AI ML Operations, LLC as developer
- [ ] `npm run test:ci` (Footer test updated)
- [ ] After #28 merges: Android launcher / activity title shows HesychiaReviewed-on: #32

README.md

@@ -1,7 +1,9 @@
-# Chat Web App (`chat_web_app`)
+# Hesychia (`chat_web_app`)
 
-Frontend for [chat.aimloperations.com](https://chat.aimloperations.com) — a React +
-TypeScript single-page app for the AI ML Operations chat product.
+Frontend for **[Hesychia](https://hesychia.ai)** — a React + TypeScript single-page
+app for a calm AI assistant experience (quiet, rest, stillness).
+
+Public product domain: **hesychia.ai** (replacing `chat.aimloperations.com`).
 
 Companion backend: [chat_backend](https://git.aimloperations.com/ai_ml_operations/chat_backend)
 
@@ -10,13 +12,29 @@ document root; the shared **web-static** nginx container from
 [server-infra](https://git.aimloperations.com/ai_ml_operations/server-infra) serves
 those assets. Same pattern as `dta_webapp`.
 
+Android Capacitor shell (display name **Hesychia**) lands via the Capacitor wrap
+PR; branding strings there use Hesychia once that tree is on `master`.
+
+## Domain migration
+
+| Role | Current (still live) | Target |
+|------|----------------------|--------|
+| Web UI | `chat.aimloperations.com` | `hesychia.ai` |
+| REST / WS API | `chatbackend.aimloperations.com` | TBD under hesychia.ai (infra cutover) |
+| Deploy webroot | `/var/www/{env}.chat.aimloperations/html` | Keep until `server-infra` renames |
+
+Committed `.env.production` / `.env.beta` still point at the **current**
+`*.aimloperations.com` API hosts so builds keep working. Flip those URLs (and
+deploy webroots / NPM) when DNS and `server-infra` cut over to hesychia.ai.
+
 ## Stack
 
 - **React 18**, **TypeScript**, **Create React App** (`react-scripts` 5)
 - **Material UI (MUI) 5** + Emotion for components and theming
-- **React Router 6** for routing
-- **Axios** for REST against `chat_backend`
+- **React Router 6** for routing (`BrowserRouter` on web; `HashRouter` under Capacitor)
+- **Axios** for REST against `chat_backend` (JWT `Authorization` header)
 - **WebSocket** for live chat (`REACT_APP_BACKEND_WS_API_BASE_URL`)
+- **Capacitor 7** for Android (and later iOS) WebView shells
 - **Jest** + React Testing Library for unit tests
 
 ## Repository layout
@@ -25,20 +43,21 @@ those assets. Same pattern as `dta_webapp`.
 chat_web_app/
 ├── README.md
 ├── .gitea/workflows/          # Unit tests + deploy-prod / deploy-beta
-└── llm-fe/                    # CRA application (npm root)
+└── llm-fe/                    # CRA npm root (+ Capacitor when Android wrap merges)
     ├── package.json
     ├── .env.development       # Local dev API/WS URLs
     ├── .env.beta
     ├── .env.production
     ├── public/
     └── src/
-        ├── axiosApi.js        # Axios instances (JWT + CSRF)
+        ├── axiosApi.js        # Axios instances (JWT Authorization)
         ├── App.tsx
         ├── index.tsx
         └── llm-fe/
             ├── pages/         # Route-level views
             ├── components/    # Shared & feature UI
             ├── contexts/      # Auth, account, WebSocket, theme
+            ├── platform/      # Capacitor routing / native chrome
             └── ui-kit/        # MD* design-system wrappers
 ```
 
@@ -48,6 +67,7 @@ chat_web_app/
 - **npm** (lockfile: `llm-fe/package-lock.json`)
 - Running [chat_backend](https://git.aimloperations.com/ai_ml_operations/chat_backend)
   locally for full chat/auth (default in `.env.development`: port **8001**)
+- For Android (after Capacitor wrap merges): JDK 17+, Android Studio / SDK
 
 ## Local setup
 
@@ -64,12 +84,11 @@ npm ci
 CRA loads mode-specific env files. Variables must be prefixed with `REACT_APP_`
 to be visible in the browser bundle.
 
-| File | Used when | Backend |
-|------|-----------|---------|
+| File | Used when | Backend (current) |
+|------|-----------|-------------------|
 | `.env.development` | `npm start` | `http://127.0.0.1:8001` |
 | `.env.production` | `npm run build` / `build:prod` | `https://chatbackend.aimloperations.com` |
 | `.env.beta` | `npm run build:beta` | `https://beta.chatbackend.aimloperations.com` |
-
 Required keys (already set in the committed env files):
 
 ```env
@@ -116,7 +135,7 @@ Open **http://localhost:3000**.
 
 `build:prod` / `build:beta` are intended for deploy hosts (or a machine that can
 write those `/var/www/...` paths). Paths must match
-`server-infra` `app_catalog.chat_web_app.webroot_pattern`:
+`server-infra` `app_catalog.chat_web_app.webroot_pattern` until renamed:
 
 ```text
 /var/www/{env}.chat.aimloperations/html
@@ -154,7 +173,7 @@ Manual deploy from the control node:
   --app chat_web_app --env prod --ref <sha>
 ```
 
-NPM (not managed by Ansible) should balance public chat domains to:
+NPM (not managed by Ansible) should balance public Hesychia domains to:
 
 - `adama:8082` + `roslin:8082` + `ai-server-4080:8082` (prod)