Channel rows with real logos (Entwurf A), no focus scale clipping

- Rows carry the Dispatcharr channel logo in a small tile (initials as
  fallback), sit on a surface instead of transparent black, and get the
  accent focus border; the group subline is gone — the logo carries
  channel identity.
- Focus scale disabled on settings rows, picker options, rail items and
  channel rows: the grown surface got clipped by its parent.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/build.gradle.kts

@@ -12,8 +12,8 @@ android {
         applicationId = "dev.castarr.tv"
         minSdk = 26
         targetSdk = 35
-        versionCode = 17
-        versionName = "0.8.1"
+        versionCode = 18
+        versionName = "0.8.2"
     }
 
     // Release signing from environment (see ~/.keys/castarr-release.env on the
@@ -81,6 +81,7 @@ dependencies {
     implementation("org.nanohttpd:nanohttpd:2.3.1")
     implementation("org.nanohttpd:nanohttpd-websocket:2.3.1")
     implementation("com.google.zxing:core:3.5.3")
+    implementation("io.coil-kt:coil-compose:2.7.0")
 }
 
 // Full JDK for javac via toolchain (host may only have a JRE); resolved by