Second pass with the avoid-ai-writing detector

The skill's detector scored the README, PARITY.md and the extracted
comment prose. Fixed what it flagged: hollow intensifiers, "in order
to", "additionally", "the whole point", bold sentences in docs, and
bold that had wrapped across comment lines. Comment prose scores a
maximum of 4 out of 100 across the repo.

One sweep rule mangled four comments ("which is the entire point of X"
lost its clause); repaired, and the rule now keeps the clause.

Comments and strings only. 1208 tests pass, counted from the XML.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

app/build.gradle.kts

@@ -100,8 +100,8 @@ android {
 
     buildTypes {
         release {
-            // **WebRTC ships native libraries for four ABIs and they
-            // dominate the APK**, about 41 MB uncompressed, of which x86 and
+            // WebRTC ships native libraries for four ABIs and they
+            // dominate the APK, about 41 MB uncompressed, of which x86 and
             // x86_64 are ~24 MB and exist only for emulators. Real phones are
             // arm64-v8a, with armeabi-v7a for old ones.
             //
@@ -148,8 +148,8 @@ android {
             all {
                 it.systemProperty("robolectric.graphicsMode", "NATIVE")
 
-                // **The screenshot tests are debug-variant tests, and
-                // `./gradlew test` runs BOTH variants.**
+                // The screenshot tests are debug-variant tests, and
+                // `./gradlew test` runs BOTH variants.
                 //
                 // They launch a `ComponentActivity`, which is declared by
                 // `androidx.compose.ui:ui-test-manifest`, a `debugImplementation`
@@ -180,7 +180,7 @@ dependencies {
     implementation(project(":client"))
     // A direct dependency rather than leaning on `:client` to re-export it.
     // The settings screen reads bridge lines and the handshake counter itself,
-    // so the app genuinely uses these types; borrowing them through another
+    // so the app uses these types; borrowing them through another
     // module's classpath would make `:client` unable to change its own
     // dependencies without breaking a screen that never mentioned it.
     implementation(project(":obfs4"))