Track packaged files of 100 KB or more with Highlander

[fornewid]

Closes #356.

Applies Highlander 0.0.6 to :app with largeFiles = true and largeFilesThresholdKb = 100 for release. Every packaged file of 100 KB or more (res, assets, jni and Java resources, from the app and its dependencies) is recorded in app/highlander/releaseLargeFiles.txt. No file reaches 100 KB today, so the baseline holds only the # threshold=100KB header.

The plugin's default duplicate scans (resources and assets) come along with it. Both of their baselines are empty. They are committed because the check fails when a baseline file is missing.

./gradlew highlander runs in CI after proguardShieldFast, and check.sh and CHECK.md list it with the other guards. The plugin also hooks into check, but neither CI nor check.sh runs check.

Verification

• ./gradlew :app:highlanderBaseline generates the three baselines, and ./gradlew highlander passes.
• With a temporary 150 KB file in app/src/main/assets, :app:highlander fails with + assets/highlander-probe.bin: - :app (150 KB). It passes again once the file is removed.
• At a 20 KB threshold the scan finds six files: Kotlin builtins (28 KB), OkHttp public suffixes (40 KB), and the DataStore native library (about 52 KB per ABI). So the empty 100 KB baseline reflects the files, not a scan that finds nothing.
• ./gradlew dependencyGuard manifestShield proguardShieldFast moduleRules and spotlessCheck pass, and the existing baselines are unchanged.