chore(release): 0.17.0 (versionCode 31) (#121)

Carve the accumulated Unreleased section into a dated release, bump the app's
versionCode and versionName, and say in the README what the release changed
about how a run reports itself.

0.17.0 is the engine/core audit: three latent correctness bugs, four pieces of
per-token work that ran whether or not anything consumed them, and the two
measurement gaps that made the rest hard to judge — a metrics file that did not
record half the configuration it was produced under, and a tok/s that excluded
everything between the decodes.

examples/android/app/build.gradle

@@ -50,8 +50,8 @@ android {
         applicationId 'io.bigmoeonedge.example'
         minSdk 29
         targetSdk 34
-        versionCode 30
-        versionName '0.16.0'
+        versionCode 31
+        versionName '0.17.0'
         buildConfigField 'String', 'GIT_SHA', "\"${gitSha}\""
         ndk {
             // The engine ships as prebuilt arm64 binaries staged by build-android.ps1.