Parallelize metric collection, enhance Touch ID script reliability with improved cleanup and backup, and add debug logging tests.

tests/debug_logging.bats

@@ -0,0 +1,65 @@
+#!/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 "${BATS_TEST_DIRNAME}/tmp-debug-logging.XXXXXX")"
+    export HOME
+
+    mkdir -p "$HOME"
+}
+
+teardown_file() {
+    rm -rf "$HOME"
+    if [[ -n "${ORIGINAL_HOME:-}" ]]; then
+        export HOME="$ORIGINAL_HOME"
+    fi
+}
+
+setup() {
+    export TERM="xterm-256color"
+    rm -rf "${HOME:?}"/*
+    mkdir -p "$HOME/.config/mole"
+}
+
+@test "mo clean --debug creates debug log file" {
+    run env HOME="$HOME" MO_DEBUG=1 "$PROJECT_ROOT/mole" clean --dry-run
+    [ "$status" -eq 0 ]
+    MOLE_OUTPUT="$output"
+
+    # Check if log file exists
+    DEBUG_LOG="$HOME/.config/mole/mole_debug_session.log"
+    [ -f "$DEBUG_LOG" ]
+
+    # Validates log content
+    run grep "Mole Debug Session" "$DEBUG_LOG"
+    [ "$status" -eq 0 ]
+
+    # Validates standard output message (ignoring colors)
+    [[ "$MOLE_OUTPUT" =~ "Debug session log saved to" ]]
+}
+
+@test "mo clean without debug does not show debug log path" {
+    run env HOME="$HOME" MO_DEBUG=0 "$PROJECT_ROOT/mole" clean --dry-run
+    [ "$status" -eq 0 ]
+
+    [[ "$output" != *"Debug session log saved to"* ]]
+}
+
+@test "mo clean --debug logs system info" {
+    run env HOME="$HOME" MO_DEBUG=1 "$PROJECT_ROOT/mole" clean --dry-run
+    [ "$status" -eq 0 ]
+
+    DEBUG_LOG="$HOME/.config/mole/mole_debug_session.log"
+
+    # Check for system info headers
+    run grep "User:" "$DEBUG_LOG"
+    [ "$status" -eq 0 ]
+
+    run grep "Architecture:" "$DEBUG_LOG"
+    [ "$status" -eq 0 ]
+}