CI: Gradle Managed Devices + GitHub Actions workflow

pixel7Api34 managed device runs instrumented tests headlessly on CI.
Three test-filter profiles (ci/parallel/full) mirror iOS xctestplan
variants. run_ui_tests.sh convenience wrapper.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

scripts/run_ui_tests.sh

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+#!/usr/bin/env bash
+# Convenience script for running Android UI tests locally via the Gradle
+# Managed Device (pixel7Api34). Mirrors the iOS scripts/run_ui_tests.sh
+# pattern but drives the Android instrumentation runner with one of the
+# three test-filter profiles under:
+#   composeApp/src/androidInstrumentedTest/testplans/
+#
+# Usage: ./scripts/run_ui_tests.sh [ci|parallel|full]
+#   ci       - fast PR gating subset (seed + registration + tasks + cleanup)
+#   parallel - all non-E2E suites (safe to run in parallel shards)
+#   full     - every suite (default)
+set -euo pipefail
+
+profile="${1:-full}"
+filter_file="composeApp/src/androidInstrumentedTest/testplans/${profile}.testfilter"
+
+if [[ ! -f "$filter_file" ]]; then
+    echo "Error: no test filter found at $filter_file" >&2
+    echo "Valid profiles: ci | parallel | full" >&2
+    exit 1
+fi
+
+# Flatten the file: strip comments/blank lines, comma-join the class names.
+filter_arg="$(grep -v '^#' "$filter_file" | grep -v '^[[:space:]]*$' | tr '\n' ',' | sed 's/,$//')"
+
+echo "Running Android UI tests (profile: $profile)"
+echo "Filter: $filter_arg"
+
+./gradlew :composeApp:pixel7Api34DebugAndroidTest \
+    -Pandroid.testInstrumentationRunnerArguments.class="$filter_arg"