chore: Add FLEURS benchmark scripts and apply swift-format

- Add fleurs_full_benchmark.sh: Benchmarks all 24 FLEURS languages (2,400 samples)
- Add fleurs_subset_benchmark.sh: Benchmarks 5 key languages (500 samples)
- Apply swift-format indentation fixes (3-space → 4-space for continuations)
- Apply swift-format trailing comma conventions

Scripts used to establish baseline WER results documented in:
Documentation/fleurs-full-benchmark-baseline.md

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: Alex-Wengg

Scripts/fleurs_full_benchmark.sh

@@ -0,0 +1,167 @@
+#!/bin/bash
+# Run FLEURS full multilingual benchmark (100 samples x 24 languages = 2,400 samples) with sleep prevention.
+#
+# Benchmarks all 24 languages supported by Parakeet TDT v3:
+#   Best (WER < 5%): en_us, es_419, it_it, fr_fr, de_de
+#   Good (5-10%): ru_ru, nl_nl, pl_pl, uk_ua, sk_sk
+#   Moderate (10-15%): cs_cz, bg_bg, hr_hr, ro_ro, fi_fi
+#   Lower (>15%): hu_hu, sv_se, et_ee, da_dk, lt_lt, el_gr, mt_mt, lv_lv, sl_si
+#
+# Usage:
+#   ./Scripts/fleurs_full_benchmark.sh
+#
+# The script downloads FLEURS data automatically if needed.
+# Uses caffeinate to prevent sleep so you can close the lid.
+# Results are saved to benchmark_results/ with timestamps.
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+RESULTS_DIR="$PROJECT_DIR/benchmark_results"
+TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
+LOG_FILE="$RESULTS_DIR/fleurs_full_benchmark_${TIMESTAMP}.log"
+SAMPLES_PER_LANG=100
+
+# All 24 supported languages
+LANGUAGES=(
+    # Best performing (WER < 5%)
+    "en_us" "es_419" "it_it" "fr_fr" "de_de"
+    # Good performance (WER 5-10%)
+    "ru_ru" "nl_nl" "pl_pl" "uk_ua" "sk_sk"
+    # Moderate performance (WER 10-15%)
+    "cs_cz" "bg_bg" "hr_hr" "ro_ro" "fi_fi"
+    # Lower performance (WER > 15%)
+    "hu_hu" "sv_se" "et_ee" "da_dk" "lt_lt" "el_gr" "mt_mt" "lv_lv" "sl_si"
+)
+
+MODELS_DIR="$HOME/Library/Application Support/FluidAudio/Models"
+
+mkdir -p "$RESULTS_DIR"
+
+log() {
+    echo "[$(date '+%H:%M:%S')] $*" | tee -a "$LOG_FILE"
+}
+
+# Verify Parakeet v3 models exist
+verify_models() {
+    local v3_dir="$MODELS_DIR/parakeet-tdt-0.6b-v3"
+    for f in Preprocessor.mlmodelc Encoder.mlmodelc Decoder.mlmodelc JointDecision.mlmodelc parakeet_vocab.json; do
+        if [[ ! -e "$v3_dir/$f" ]]; then
+            log "MISSING  v3: $v3_dir/$f"
+            return 1
+        fi
+    done
+    return 0
+}
+
+log "=== Verifying Parakeet v3 models ==="
+if ! verify_models; then
+    log ""
+    log "ERROR: Parakeet v3 models missing."
+    log "Please run ASR benchmark first to download models."
+    exit 1
+fi
+log "Parakeet v3 models verified. FLEURS data will download automatically if needed."
+
+log "=== FLEURS full benchmark: $SAMPLES_PER_LANG samples x ${#LANGUAGES[@]} languages = $(( SAMPLES_PER_LANG * ${#LANGUAGES[@]} )) total ==="
+log "Results directory: $RESULTS_DIR"
+
+cd "$PROJECT_DIR"
+
+# Build release if not already built
+if [[ ! -x ".build/release/fluidaudiocli" ]]; then
+    log "Building release binary..."
+    swift build -c release 2>&1 | tail -1 | tee -a "$LOG_FILE"
+fi
+CLI="$PROJECT_DIR/.build/release/fluidaudiocli"
+
+# caffeinate -s: prevent sleep even on AC power / lid closed
+# caffeinate -i: prevent idle sleep
+caffeinate -si -w $$ &
+CAFFEINATE_PID=$!
+log "caffeinate started (PID $CAFFEINATE_PID) — safe to close the lid"
+
+SUITE_START=$(date +%s)
+
+# Run all languages
+LANG_NAMES=(
+    "English (US)" "Spanish (Spain)" "Italian (Italy)" "French (France)" "German (Germany)"
+    "Russian (Russia)" "Dutch (Netherlands)" "Polish (Poland)" "Ukrainian (Ukraine)" "Slovak (Slovakia)"
+    "Czech (Czechia)" "Bulgarian (Bulgaria)" "Croatian (Croatia)" "Romanian (Romania)" "Finnish (Finland)"
+    "Hungarian (Hungary)" "Swedish (Sweden)" "Estonian (Estonia)" "Danish (Denmark)" "Lithuanian (Lithuania)"
+    "Greek (Greece)" "Maltese (Malta)" "Latvian (Latvia)" "Slovenian (Slovenia)"
+)
+
+for i in "${!LANGUAGES[@]}"; do
+    lang="${LANGUAGES[$i]}"
+    name="${LANG_NAMES[$i]}"
+    label="fleurs_${lang}"
+    output_file="$RESULTS_DIR/${label}_${TIMESTAMP}.json"
+
+    log "--- [$((i+1))/${#LANGUAGES[@]}] $name ($lang): starting ($SAMPLES_PER_LANG samples) ---"
+    start_time=$(date +%s)
+
+    "$CLI" fleurs-benchmark \
+        --languages "$lang" \
+        --samples "$SAMPLES_PER_LANG" \
+        --output "$output_file" \
+        2>&1 | tee -a "$LOG_FILE"
+
+    end_time=$(date +%s)
+    elapsed=$(( end_time - start_time ))
+    log "--- $name: finished in ${elapsed}s — $output_file ---"
+done
+
+SUITE_END=$(date +%s)
+SUITE_ELAPSED=$(( SUITE_END - SUITE_START ))
+SUITE_HOURS=$(( SUITE_ELAPSED / 3600 ))
+SUITE_MINS=$(( (SUITE_ELAPSED % 3600) / 60 ))
+SUITE_SECS=$(( SUITE_ELAPSED % 60 ))
+
+log "=== All benchmarks complete in ${SUITE_HOURS}h ${SUITE_MINS}m ${SUITE_SECS}s ==="
+log "Results:"
+ls -lh "$RESULTS_DIR"/*_${TIMESTAMP}.json 2>/dev/null | tee -a "$LOG_FILE"
+
+# Extract WER from all results
+log ""
+log "=== WER Summary (100 samples per language) ==="
+log ""
+printf "%-30s %10s %10s %10s\n" "Language" "WER%" "CER%" "RTFx" | tee -a "$LOG_FILE"
+printf "%-30s %10s %10s %10s\n" "------------------------------" "----------" "----------" "----------" | tee -a "$LOG_FILE"
+
+extract_metrics() {
+    local json_file="$1"
+    if [[ -f "$json_file" ]]; then
+        python3 -c "
+import json
+d = json.load(open('$json_file'))
+wer = round(d['summary']['averageWER']*100, 2)
+cer = round(d['summary']['averageCER']*100, 2)
+rtfx = round(d['summary']['averageRTFx'], 1)
+print(f'{wer}\t{cer}\t{rtfx}')
+" 2>/dev/null || echo "N/A\tN/A\tN/A"
+    else
+        echo "N/A\tN/A\tN/A"
+    fi
+}
+
+for i in "${!LANGUAGES[@]}"; do
+    lang="${LANGUAGES[$i]}"
+    name="${LANG_NAMES[$i]}"
+    json_file="$RESULTS_DIR/fleurs_${lang}_${TIMESTAMP}.json"
+
+    metrics=$(extract_metrics "$json_file")
+    wer=$(echo "$metrics" | cut -f1)
+    cer=$(echo "$metrics" | cut -f2)
+    rtfx=$(echo "$metrics" | cut -f3)
+
+    printf "%-30s %9s%% %9s%% %9sx\n" "$name ($lang)" "$wer" "$cer" "$rtfx" | tee -a "$LOG_FILE"
+done
+
+log ""
+log "✅ Full FLEURS benchmark complete"
+log "Total samples processed: $(( SAMPLES_PER_LANG * ${#LANGUAGES[@]} ))"
+log "Results saved to: $RESULTS_DIR/*_${TIMESTAMP}.json"
+
+# caffeinate will exit automatically since the parent process ($$) exits