한국어 우선 MeloTTS 웹 서비스 추가 (GPU, 속도/피치, 로그인 없음)

- FastAPI 백엔드: /api/voices, /api/tts, /api/health
- 한국어 메인 + 영어(5종 악센트), 중국어/일본어 UI 제거
- 언어별 목소리 모델 선택, 속도(0.5~2.0x)/피치(±12반음) 조절
- 로그인/사용제한/과금 유도 없음 (무제한 테스트)
- NVIDIA GPU 자동 사용 (torch cu128, Blackwell sm_120)
- 유저 친화 한국어 UI (frontend)
- Docker/compose (GPU 예약), 8788 포트
- MeloTTS(순수 파이썬) 벤더링 + 검증된 버전 고정(constraints)

vendor/melo/download_utils.py

@@ -0,0 +1,67 @@
+import torch
+import os
+from . import utils
+from cached_path import cached_path
+from huggingface_hub import hf_hub_download
+
+DOWNLOAD_CKPT_URLS = {
+    'EN': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/EN/checkpoint.pth',
+    'EN_V2': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/EN_V2/checkpoint.pth',
+    'FR': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/FR/checkpoint.pth',
+    'JP': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/JP/checkpoint.pth',
+    'ES': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/ES/checkpoint.pth',
+    'ZH': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/ZH/checkpoint.pth',
+    'KR': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/KR/checkpoint.pth',
+}
+
+DOWNLOAD_CONFIG_URLS = {
+    'EN': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/EN/config.json',
+    'EN_V2': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/EN_V2/config.json',
+    'FR': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/FR/config.json',
+    'JP': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/JP/config.json',
+    'ES': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/ES/config.json',
+    'ZH': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/ZH/config.json',
+    'KR': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/KR/config.json',
+}
+
+PRETRAINED_MODELS = {
+    'G.pth': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/pretrained/G.pth',
+    'D.pth': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/pretrained/D.pth',
+    'DUR.pth': 'https://myshell-public-repo-host.s3.amazonaws.com/openvoice/basespeakers/pretrained/DUR.pth',
+}
+
+LANG_TO_HF_REPO_ID = {
+    'EN': 'myshell-ai/MeloTTS-English',
+    'EN_V2': 'myshell-ai/MeloTTS-English-v2',
+    'EN_NEWEST': 'myshell-ai/MeloTTS-English-v3',
+    'FR': 'myshell-ai/MeloTTS-French',
+    'JP': 'myshell-ai/MeloTTS-Japanese',
+    'ES': 'myshell-ai/MeloTTS-Spanish',
+    'ZH': 'myshell-ai/MeloTTS-Chinese',
+    'KR': 'myshell-ai/MeloTTS-Korean',
+}
+
+def load_or_download_config(locale, use_hf=True, config_path=None):
+    if config_path is None:
+        language = locale.split('-')[0].upper()
+        if use_hf:
+            assert language in LANG_TO_HF_REPO_ID
+            config_path = hf_hub_download(repo_id=LANG_TO_HF_REPO_ID[language], filename="config.json")
+        else:
+            assert language in DOWNLOAD_CONFIG_URLS
+            config_path = cached_path(DOWNLOAD_CONFIG_URLS[language])
+    return utils.get_hparams_from_file(config_path)
+
+def load_or_download_model(locale, device, use_hf=True, ckpt_path=None):
+    if ckpt_path is None:
+        language = locale.split('-')[0].upper()
+        if use_hf:
+            assert language in LANG_TO_HF_REPO_ID
+            ckpt_path = hf_hub_download(repo_id=LANG_TO_HF_REPO_ID[language], filename="checkpoint.pth")
+        else:
+            assert language in DOWNLOAD_CKPT_URLS
+            ckpt_path = cached_path(DOWNLOAD_CKPT_URLS[language])
+    return torch.load(ckpt_path, map_location=device)
+
+def load_pretrain_model():
+    return [cached_path(url) for url in PRETRAINED_MODELS.values()]