Initial commit: ASR v2 with multi-venv isolation

- faster-whisper, Qwen3-ASR, gateway 각 컴포넌트별 Python venv 분리
- 기본언어 한국어(ko)
- 처리내역 탭: 목록/상세/원본파일 재생/삭제
- 백엔드별 동적 모델 드랍다운
- /history, /uploads API 추가
- 기존 인스턴스(port 18100) 보존, 신규 port 18101

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

envs/faster_whisper.txt

@@ -0,0 +1,6 @@
+fastapi==0.115.0
+uvicorn[standard]==0.30.6
+python-multipart==0.0.9
+faster-whisper==1.1.1
+pyannote.audio>=3.1
+numpy

envs/gateway.txt

@@ -0,0 +1,7 @@
+fastapi==0.115.0
+uvicorn[standard]==0.30.6
+python-multipart==0.0.9
+httpx==0.27.2
+websockets>=12.0
+jinja2==3.1.4
+numpy

envs/qwen3.txt

@@ -0,0 +1,9 @@
+# torch는 --system-site-packages로 base image에서 상속
+fastapi==0.115.0
+uvicorn[standard]==0.30.6
+python-multipart==0.0.9
+transformers>=4.45.0
+accelerate>=0.30.0
+librosa>=0.10.0
+soundfile>=0.12.0
+numpy