模特库标签分页与全能创作收口：藏长视频、选择器分页

角色库导入打标签并支持筛选；模特库与全能创作角色/商品选择改为每页 20 条分页。临时限制成片 ≤60 秒，过滤对话里的超长时长选项，并收拢本地全能创作与后台用户相关修复。

core/backend/apps/ai/video_replace.py

@@ -33,6 +33,7 @@ from .free_video import (
     IN_FLIGHT_STATUSES,
     RATIOS,
     RESOLUTIONS,
+    normalize_video_seed,
     _reap_stale_free_video_tasks,
     model_duration_range,
     serialize_free_video_task,
@@ -654,6 +655,21 @@ def video_replace_q() -> Q:
     return Q(request_payload__feature=FEATURE) | Q(request_payload__prompt__startswith=LEGACY_PROMPT_PREFIX)
 
 
+def not_video_replace_q() -> Q:
+    """「不是视频复刻」。不能写成 exclude(video_replace_q())。
+
+    JSON 键不存在时取值是 SQL NULL，NOT(NULL = 'x') 仍是 NULL，整行会被 exclude 一起筛掉 ——
+    于是 request_payload 里没有 feature 的历史任务在列表和回收站里凭空消失。必须把「键缺失」
+    显式算作不匹配。
+    """
+    return (
+        Q(request_payload__feature__isnull=True) | ~Q(request_payload__feature=FEATURE)
+    ) & (
+        Q(request_payload__prompt__isnull=True)
+        | ~Q(request_payload__prompt__startswith=LEGACY_PROMPT_PREFIX)
+    )
+
+
 def _fresh_digest_source(payload: dict) -> dict | None:
     """历史卡「原视频」用的原片快照。快照 URL 会过期,统一走 rehydrate_ref_urls 重新取长期直链。"""
     from .free_video import rehydrate_ref_urls
@@ -1028,10 +1044,7 @@ def _legacy_start_pending_replace_shots(task):
     generate_audio = bool(payload.get("generate_audio", True))
     search_mode = str(payload.get("search_mode") or "off")
     feature = str(payload.get("feature") or FEATURE)
-    try:
-        seed = int(payload.get("seed") if payload.get("seed") is not None else -1)
-    except (TypeError, ValueError):
-        seed = -1
+    seed = normalize_video_seed(payload.get("seed"))
     billed_duration = sum(int(item.get("seconds") or 0) for item in plan) or int(payload.get("duration") or 5)
     references = _seedance_references(payload)
     try:
@@ -1238,10 +1251,7 @@ def _dispatch_next_replace_shot(task, shot: dict):
         locked.request_payload = next_payload
         locked.save(update_fields=["request_payload", "updated_at"])
 
-    try:
-        seed = int(payload.get("seed") if payload.get("seed") is not None else -1)
-    except (TypeError, ValueError):
-        seed = -1
+    seed = normalize_video_seed(payload.get("seed"))
     dispatched = _dispatch_free_video_provider(
         task=locked,
         built=built,
@@ -1403,7 +1413,9 @@ def _concat_shot_media(urls: list[str]) -> bytes:
             "-c:v", "libx264", "-pix_fmt", "yuv420p", "-preset", "veryfast", "-threads", "2",
             "-c:a", "aac", "-b:a", "192k", "-movflags", "+faststart", str(output),
         ]
-        proc = subprocess.run(cmd, capture_output=True, timeout=180)
+        # 180 秒成片最多 6 段，1080p 重编码明显可能超过旧的 180 秒固定超时。
+        # 按片段数放宽，但仍保留上限式超时，避免异常 ffmpeg 永久占住 worker。
+        proc = subprocess.run(cmd, capture_output=True, timeout=max(180, len(paths) * 120))
         if proc.returncode != 0 or not output.exists() or not output.stat().st_size:
             err = (proc.stderr or b"").decode("utf-8", errors="replace")[-500:]
             raise RuntimeError(f"镜头拼接失败：{err or 'ffmpeg 未产出文件'}")
@@ -1605,10 +1617,7 @@ def _create_reviewing_task(*, team, user, params: dict, digest_pending: bool = F
     if available < reserve_amount:
         raise ValueError("团队余额不足，请充值后重试")
 
-    try:
-        seed = int(params.get("seed") if params.get("seed") is not None else -1)
-    except (TypeError, ValueError):
-        seed = -1
+    seed = normalize_video_seed(params.get("seed"))
     request_payload = {
         "feature": FEATURE,
         "mode": "universal",