docs: replace stale 'android' name mentions with 'iris'

The plugin is named 'iris' (IrisAdapter, IRIS_HOME_CHANNEL, label Iris),
but several docs still referred to it as the android platform/plugin and
to the product as 'the Android app'. Rename name-mentions to iris/IRIS
and product-mentions to 'Iris app'; keep legitimate OS references
(androidApp, Android SDK, Android 10, androidx, test_android.py, ...).

Also includes pi-lens markdown-lint autofixes (table spacing, trailing
newlines) in the touched files.

docs/README.md

@@ -32,7 +32,7 @@ top-to-bottom once, then use the numbered docs as a lookup while implementing.
 | 7 | [`07-media.md`](07-media.md) | Media upload/download + playback. |
 | 8 | [`08-push.md`](08-push.md) | Push (ntfy default + FCM optional), outbox, sync. |
 | 9 | [`09-pairing-security.md`](09-pairing-security.md) | Pairing, auth, security model. |
-| 10 | [`10-android-app.md`](10-android-app.md) | When building the Android app. |
+| 10 | [`10-android-app.md`](10-android-app.md) | When building the Iris app (Android). |
 | 11 | [`11-desktop-app.md`](11-desktop-app.md) | When building the Desktop app. |
 | 12 | [`12-toolchain.md`](12-toolchain.md) | First time on a machine (JDK/SDK/uv/Firebase). |
 | 13 | [`13-testing.md`](13-testing.md) | Writing tests + on-device ADB workflow. |
@@ -59,9 +59,9 @@ Machine-readable / diagrams:
    Python dependencies, zero hermes-core changes.**
 2. **`app/androidApp`** — native Kotlin + Jetpack Compose client.
 3. **`app/desktopApp`** — Kotlin + Compose Multiplatform client that *shares*
-   the Android app's code and is "tweaked" for a big screen.
+   the Iris app's code and is "tweaked" for a big screen.
 
-The Android and Desktop clients live in **one Compose Multiplatform Gradle
+The Iris Android and Desktop clients live in **one Compose Multiplatform Gradle
 project** (`app/`) with a shared KMP module (`app/shared`).
 
 ---