feat(points): P2 step 2.2 - wire lipsync points gate

- create_lipsync_job(): deduct ai_digital_human points (15/min), estimated from audio_duration (if provided) or script_text (chars/240), min 1 min; refund on ValueError/MediaKitError/Exception; refund on failed job
- preview_tts(): deduct ai_digital_human points by script_text length; refund on MediaKitError/Exception
- Both gated by settings.points_enabled (default false)
- Raises HTTP 402 INSUFFICIENT_POINTS on insufficient balance
- 14 new unit tests; 15468 total passed

apps/api/app/api/routes/lipsync.py

@@ -12,9 +12,13 @@
 from __future__ import annotations
 
 import logging
+import math
 from datetime import UTC
 
 from app.auth import AuthenticatedUser, get_current_user
+from app.config import settings
+from packages.domain.points_rules import calculate_points_cost
+from packages.domain.points_service import PointsService
 from app.dependencies import (
     get_db_session,
     get_voice_clone_profile_repository,
@@ -53,8 +57,40 @@ def _get_service(
 def create_lipsync_job(
     body: CreateLipsyncJobRequest,
     current_user: AuthenticatedUser = Depends(get_current_user),
+    db: Session = Depends(get_db_session),
     svc: LipsyncService = Depends(_get_service),
 ):
+    user_id = current_user.user.id
+
+    # ── 积分扣点（#1895 P2） ──
+    _points_deducted = 0
+    _points_scene = "ai_digital_human"
+    _points_svc = PointsService() if settings.points_enabled else None
+    if _points_svc is not None:
+        # 口型同步：TTS 模式按 script_text 估时长（240字/分钟）；音频直传按 audio_duration（秒→分钟）
+        if body.audio_url and body.audio_duration and body.audio_duration > 0:
+            est_minutes = max(1.0, math.ceil(body.audio_duration / 60.0))
+        elif body.script_text:
+            est_minutes = max(1.0, math.ceil(len(body.script_text) / 240))
+        else:
+            est_minutes = 1.0
+        _points_deducted = calculate_points_cost(
+            _points_scene,
+            is_member=getattr(current_user.user, "is_member", False),
+            duration_minutes=est_minutes,
+            member_type=getattr(current_user.user, "member_type", None),
+        )
+        _deduct_res = _points_svc.deduct_points(user_id, _points_deducted, _points_scene, db)
+        if not _deduct_res["success"]:
+            raise HTTPException(
+                status_code=402,
+                detail={
+                    "code": "INSUFFICIENT_POINTS",
+                    "message": f"积分不足，需要 {_points_deducted} 积分，当前余额 {_deduct_res['balance']}",
+                    "required": _points_deducted,
+                    "balance": _deduct_res["balance"],
+                },
+            )
     """提交对口型任务.
 
     三种模式：
@@ -66,7 +102,7 @@ def create_lipsync_job(
     """
     try:
         job = svc.create_job(
-            user_id=current_user.user.id,
+            user_id=user_id,
             video_url=body.video_url,
             audio_url=body.audio_url,
             audio_duration=body.audio_duration,
@@ -79,8 +115,18 @@ def create_lipsync_job(
             project_id=body.project_id,
         )
     except ValueError as exc:
+        if _points_deducted > 0 and _points_svc is not None:
+            try:
+                _points_svc.refund_points(user_id, _points_deducted, _points_scene, db)
+            except Exception as refund_err:
+                logger.warning(f"对口型 ValueError 退积分异常: err={refund_err}")
         raise HTTPException(status_code=400, detail=str(exc)) from exc
     except MediaKitError as exc:
+        if _points_deducted > 0 and _points_svc is not None:
+            try:
+                _points_svc.refund_points(user_id, _points_deducted, _points_scene, db)
+            except Exception as refund_err:
+                logger.warning(f"对口型 MediaKitError 退积分异常: err={refund_err}")
         status_code = 502
         if exc.code in ("VoiceForbidden",):
             status_code = 403
@@ -96,11 +142,24 @@ def create_lipsync_job(
         ) from exc
     except Exception as exc:
         logger.error("创建对口型任务异常: %s", exc, exc_info=True)
+        if _points_deducted > 0 and _points_svc is not None:
+            try:
+                _points_svc.refund_points(user_id, _points_deducted, _points_scene, db)
+            except Exception as refund_err:
+                logger.warning(f"对口型异常退积分异常: err={refund_err}")
         raise HTTPException(
             status_code=400,
             detail=f"创建对口型任务失败: {exc}",
         ) from exc
 
+    # 创建成功但状态为 failed（同步路径失败已抛异常到上面 except；此处处理 Celery 调度失败等）
+    # 若任务已创建且状态为 failed，退费
+    if _points_deducted > 0 and _points_svc is not None and getattr(job, "status", None) == "failed":
+        try:
+            _points_svc.refund_points(user_id, _points_deducted, _points_scene, db, ref_id=job.id)
+        except Exception as refund_err:
+            logger.warning(f"对口型任务失败退积分异常: job_id={job.id}, err={refund_err}")
+
     return job
 
 
@@ -111,8 +170,34 @@ def create_lipsync_job(
 def preview_tts(
     body: AiAvatarTtsPreviewRequest,
     current_user: AuthenticatedUser = Depends(get_current_user),
+    db: Session = Depends(get_db_session),
     svc: LipsyncService = Depends(_get_service),
 ):
+    user_id = current_user.user.id
+
+    # ── 积分扣点（#1895 P2） ──
+    _points_deducted = 0
+    _points_scene = "ai_digital_human"
+    _points_svc = PointsService() if settings.points_enabled else None
+    if _points_svc is not None:
+        est_minutes = max(1.0, math.ceil(len(body.script_text or "") / 240)) if body.script_text else 1.0
+        _points_deducted = calculate_points_cost(
+            _points_scene,
+            is_member=getattr(current_user.user, "is_member", False),
+            duration_minutes=est_minutes,
+            member_type=getattr(current_user.user, "member_type", None),
+        )
+        _deduct_res = _points_svc.deduct_points(user_id, _points_deducted, _points_scene, db)
+        if not _deduct_res["success"]:
+            raise HTTPException(
+                status_code=402,
+                detail={
+                    "code": "INSUFFICIENT_POINTS",
+                    "message": f"积分不足，需要 {_points_deducted} 积分，当前余额 {_deduct_res['balance']}",
+                    "required": _points_deducted,
+                    "balance": _deduct_res["balance"],
+                },
+            )
     """步骤1「生成配音」同步 TTS 预合成.
 
     同步执行 TTS 合成 → 下载音频 → ffprobe 时长 → 句子时间戳计算，
@@ -121,13 +206,18 @@ def preview_tts(
     """
     try:
         result = svc.preview_tts(
-            user_id=current_user.user.id,
+            user_id=user_id,
             voice_id=body.voice_id,
             script_text=body.script_text,
             speed=body.speed,
             emotion=body.emotion,
         )
     except MediaKitError as exc:
+        if _points_deducted > 0 and _points_svc is not None:
+            try:
+                _points_svc.refund_points(user_id, _points_deducted, _points_scene, db)
+            except Exception as refund_err:
+                logger.warning(f"TTS 预合成 MediaKitError 退积分异常: err={refund_err}")
         status_code = 400
         if exc.code in ("VoiceForbidden",):
             status_code = 403
@@ -142,6 +232,11 @@ def preview_tts(
         ) from exc
     except Exception as exc:
         logger.error("TTS 预合成异常: %s", exc, exc_info=True)
+        if _points_deducted > 0 and _points_svc is not None:
+            try:
+                _points_svc.refund_points(user_id, _points_deducted, _points_scene, db)
+            except Exception as refund_err:
+                logger.warning(f"TTS 预合成异常退积分异常: err={refund_err}")
         raise HTTPException(
             status_code=400,
             detail=f"TTS 合成失败: {exc}",