The android-emulator-runner action executes scripts with /usr/bin/sh,
not bash. The {1..30} brace expansion is a bashism that causes a syntax
error in POSIX sh, which made the script fail immediately. Also adds a
30-minute job timeout to prevent runaway CI jobs.

The android-emulator-runner action runs each line of the script
parameter as a separate /usr/bin/sh -c invocation. Multi-line constructs
like for loops, if/fi blocks, and line continuations cannot work inline.
Moved the entire script to run-ci-contract-tests.sh which is invoked as
a single command.

The release build was spending ~7.5 min in CI building native code for 4
ABIs (arm64-v8a, armeabi-v7a, x86, x86_64) plus running lintVital. Since
the emulator is x86_64, we only need that ABI. Switching to debug build
also skips lintVital and R8/ProGuard (which weren't meaningful anyway as
release was signed with debug keys).

Expected savings: ~3-4 minutes (native builds for 3 unused ABIs + lint).

…de emulator

Debug builds skip JS bundling and expect Metro dev server — the APK
launched with no JavaScript code so it never connected to the WebSocket.

Switched back to assembleRelease with x86_64-only ABI and skipping
lintVital to keep the speed improvement.

Moved log capture into the emulator runner script via a trap on EXIT.
The previous "Print logs" step ran after the emulator was terminated,
causing adb logcat to hang indefinitely.