Rename Android shell display name to Hesychia (#29)

Capacitor appName and Android string resources (plus docs) now show Hesychia
so the mobile shell matches the product rebrand when this wrap lands.

llm-fe/android/README.md

@@ -1,4 +1,4 @@
-# AI ML Chat — Android
+# Hesychia — Android
 
 Native Capacitor project for `com.aimloperations.chat`. Web UI comes from the CRA
 `build/` output in the parent `llm-fe/` package (synced with `npx cap sync`).
@@ -105,7 +105,7 @@ Without `keystore.properties`, release builds are unsigned; debug builds do not
 
 ## Deploy to Google Play
 
-1. [Play Console](https://play.google.com/console) → app **AI ML Chat** (`com.aimloperations.chat`).
+1. [Play Console](https://play.google.com/console) → app **Hesychia** (`com.aimloperations.chat`).
 2. Complete store listing: privacy policy URL, data-safety form, screenshots.
 3. **Testing → Internal testing** → create release → upload `app-release.aab`.
 4. Add testers, roll out internal track, verify on devices.
@@ -127,5 +127,5 @@ Each new upload needs a higher `versionCode`.
 | | |
 |--|--|
 | Application ID | `com.aimloperations.chat` |
-| Display name | AI ML Chat |
+| Display name | Hesychia |
 | Min / target SDK | 23 / 35 (see `variables.gradle`) |