feat: overhaul quality checks and expand test suite for clean and optimize features

tests/optimize_helpers.bats

@@ -0,0 +1,46 @@
+#!/usr/bin/env bats
+
+setup_file() {
+    PROJECT_ROOT="$(cd "${BATS_TEST_DIRNAME}/.." && pwd)"
+    export PROJECT_ROOT
+
+    ORIGINAL_HOME="${HOME:-}"
+    export ORIGINAL_HOME
+
+    HOME="$(mktemp -d "${BATS_TEST_DIRNAME}/tmp-optimize-helpers.XXXXXX")"
+    export HOME
+
+    mkdir -p "$HOME"
+}
+
+teardown_file() {
+    rm -rf "$HOME"
+    if [[ -n "${ORIGINAL_HOME:-}" ]]; then
+        export HOME="$ORIGINAL_HOME"
+    fi
+}
+
+@test "opt_msg uses dry-run output" {
+    run env HOME="$HOME" PROJECT_ROOT="$PROJECT_ROOT" MOLE_DRY_RUN=1 bash --noprofile --norc <<'EOF'
+set -euo pipefail
+source "$PROJECT_ROOT/lib/core/common.sh"
+source "$PROJECT_ROOT/lib/optimize/tasks.sh"
+opt_msg "dry"
+EOF
+
+    [ "$status" -eq 0 ]
+    [[ "$output" == *"dry"* ]]
+}
+
+@test "run_launchctl_unload skips in dry-run" {
+    run env HOME="$HOME" PROJECT_ROOT="$PROJECT_ROOT" MOLE_DRY_RUN=1 bash --noprofile --norc <<'EOF'
+set -euo pipefail
+source "$PROJECT_ROOT/lib/optimize/tasks.sh"
+launchctl() { echo "called"; }
+export -f launchctl
+run_launchctl_unload "/tmp/test.plist" false
+EOF
+
+    [ "$status" -eq 0 ]
+    [[ "$output" != *"called"* ]]
+}