重组为 backend/clients/docs 三层结构，并清理 git 污染。

将后端迁入 backend/，完善根目录 .gitignore，删除误提交的 .mypy_cache 缓存文件。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/baked/pipeline.py

@@ -0,0 +1,42 @@
+"""视频流、待确认、归档与可观测性默认可调参数（非 env）。"""
+
+# --- 手术录制 API 重试 ---
+SURGERY_RECORDING_MAX_ATTEMPTS: int = 3
+SURGERY_RECORDING_RETRY_DELAY_SECONDS: float = 1.0
+
+# --- RTSP 连接与抽帧、推理门控（不含 URL，URL 在 Settings）---
+# 运行时以 Settings.video_open_timeout_sec（环境变量 VIDEO_OPEN_TIMEOUT_SEC）为准；此处为未注入 Settings 时的回退默认。
+VIDEO_OPEN_TIMEOUT_SEC: float = 45.0
+VIDEO_READ_FAILURE_RECONNECT_THRESHOLD: int = 15
+VIDEO_RECONNECT_BACKOFF_SECONDS: float = 1.0
+VIDEO_INFERENCE_INTERVAL_SEC: float = 2.0
+VIDEO_INFERENCE_CONFIDENCE_THRESHOLD: float = 0.35
+VIDEO_AUTO_CONFIRM_CONFIDENCE: float = 0.9
+VIDEO_VOICE_CONFIRM_MIN_CONFIDENCE: float = 0.35
+VOICE_CONFIRMATION_ENABLED: bool = True
+# 语音「请确认」播报时最多念几个候选项：在模型 topK 不足时用术程耗材清单顺序补齐（补项置信度为 0）。
+VOICE_PROMPT_MAX_OPTIONS: int = 3
+VIDEO_VOICE_CONFIRM_DOCTOR_ID: str = "voice"
+VIDEO_DETAIL_COOLDOWN_SEC: float = 15.0
+VIDEO_JPEG_QUALITY: int = 85
+VIDEO_RESULT_DOCTOR_ID: str = "vision"
+VIDEO_LOG_INFERENCE_RESULTS: bool = False
+
+# --- 停录后归档重试 + durable fallback ---
+ARCHIVE_PERSIST_RETRY_INTERVAL_SECONDS: float = 30.0
+ARCHIVE_PERSIST_MAX_RETRIES: int = 12
+ARCHIVE_PERSIST_BACKOFF_CAP_SECONDS: float = 900.0
+ARCHIVE_PERSIST_DURABLE_FALLBACK_DIR: str = "logs/pending_archive"
+ARCHIVE_PERSIST_DURABLE_FALLBACK_ENABLED: bool = True
+
+# --- 消耗/语音 文本日志与终端展示 ---
+CONSUMPTION_TSV_LOG_ENABLED: bool = True
+CONSUMPTION_TSV_LOG_PATH: str = "logs/consumption_{surgery_id}.txt"
+CONSUMPTION_LOG_MARKDOWN_TERMINAL: bool = True
+CONSUMPTION_LOG_TIMEZONE: str = ""
+
+VOICE_FILE_LOG_ENABLED: bool = True
+VOICE_FILE_LOG_PATH: str = "logs/voice_{surgery_id}.txt"
+
+VOICE_UPLOAD_MAX_BYTES: int = 10 * 1024 * 1024
+VOICE_CONFIRM_MAX_FAILED_PARSE_ROUNDS: int = 2