app: parse the Shizuku dumps into link.ra_source and sec.arp_watch

Pure-Kotlin parsers over the captures the battery already makes, tested
against the real archived dumps from both devices - including the
Lenovo's 1000000015 route tables (table ids stay strings), the OnePlus's
stray uid=2000 prefix and mid-line hoplimit, and an ip_monitor that only
ever said EXEC_TIMEOUT. ShizukuProbe now returns three tests; a failed
capture is SKIPPED with its reason so no test type silently vanishes.

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

echolot-app/core-shizuku/build.gradle.kts

@@ -32,4 +32,8 @@ dependencies {
     implementation(libs.shizuku.provider)
     implementation(libs.kotlinx.coroutines.android)
     implementation(libs.kotlinx.serialization.json)
+    // JVM unit tests for the pure dump parsers (DumpParsers.kt) against the archived
+    // vendor fixtures — no device, no Android runtime.
+    testImplementation(libs.kotlin.test.junit)
+    testImplementation(libs.junit4)
 }