feat(调试): swapHair webui步数暴露到测试页可调

参数透传链路: 测试页→debug接口→generate_hairline_redraw→_grow_core
  →_call_swap→change_hair swapHair→webui_img2img→build_body_v2

- app.py: 调试接口新增 webui_steps Form 参数
- hairline_grow.py: _call_swap/_grow_core/generate_hairline_grow/generate_hairline_redraw 透传 webui_steps
- debug_grow_timing.html: 新增 swap步数 下拉(默认/10/15/20/25/30)

实测 steps 10→25 swap 耗时 4.1s→4.4s,参数确实生效

app.py

@@ -827,6 +827,7 @@ async def debug_grow_timing(
     image_url: Optional[str] = Form(default=None),
     image_base64: Optional[str] = Form(default=None),
     hair_style: str = Form(default="2", description="发型序号(花瓣=2)，逗号分隔多选"),
+    webui_steps: Optional[int] = Form(default=None, description="swapHair webui img2img 采样步数，None=服务端默认(15)，可填10/15/20/25对比"),
 ):
     """单图跑接口2女性生发，返回每个步骤的耗时 + 结果图，用于定位性能瓶颈。
 
@@ -903,7 +904,7 @@ async def debug_grow_timing(
                 t0 = _time.perf_counter()
                 data = await run_in_threadpool(
                     generate_hairline_redraw, redraw_img, chang_id,
-                    hair_mask=hair_mask_redraw, **_V2_FINAL_DEFAULTS)
+                    hair_mask=hair_mask_redraw, webui_steps=webui_steps, **_V2_FINAL_DEFAULTS)
                 t_redraw_pipeline = _time.perf_counter() - t0
                 _tm = data.get("timings_ms") or {}
                 entry["mask_ms"] = _tm.get("mask", 0)

face_analysis/hairline_grow.py

@@ -508,13 +508,14 @@ def _segment_hair(image_bgr, seg_model, landmarks, w, h):
 # ---------------------------------------------------------------------------
 
 def _call_swap(image_bgr, hairline_id, is_hr, ext_mask_bool, denoising_strength,
-               inpainting_fill=1, mask_blur=11, mask_dilate_scale=1.0):
+               inpainting_fill=1, mask_blur=11, mask_dilate_scale=1.0, webui_steps=None):
     """调 change_hair /api/swapHair/v1，返回与输入同分辨率同对齐的换发型结果（BGR）。
 
     ext_mask_bool 非 None 时作为 ext_mask 传入（swap_mode=ext_mask）。
     denoising_strength：webui img2img 重绘强度（越大生发越激进），透传给换发型。
     inpainting_fill / mask_blur / mask_dilate_scale：服务端重绘参数（透传给 change_hair，
         默认值=服务端原始硬编码值，未传时行为不变）。详见 change_hair 文档。
+    webui_steps：webui img2img 采样步数，None 用服务端默认(15)。
     """
     import requests
 
@@ -530,6 +531,8 @@ def _call_swap(image_bgr, hairline_id, is_hr, ext_mask_bool, denoising_strength,
         "mask_blur": int(mask_blur),
         "mask_dilate_scale": float(mask_dilate_scale),
     }
+    if webui_steps is not None:
+        payload["webui_steps"] = int(webui_steps)
     if ext_mask_bool is not None:
         mbuf = cv2.imencode(".png", (ext_mask_bool.astype(np.uint8)) * 255)[1]
         payload["ext_mask"] = "data:image/png;base64," + base64.b64encode(mbuf.tobytes()).decode()
@@ -855,7 +858,7 @@ def _grow_core(image_bgr, hairline_id, *, is_hr, seg_model, erode_cm, swap_mode,
                mb_levels, hairline_push_cm, hairline_edge, blend_method, color_match,
                color_match_strength, mb_feather_px, transition_band_px,
                inpainting_fill, mask_blur, mask_dilate_scale, rid, render_viz=True,
-               hair_mask=None):
+               hair_mask=None, webui_steps=None):
     """接口11 共享核心：遮罩(pushed)→生成→硬贴回→接缝融合，产出 ④ final。
 
     不做任何重绘。返回中间产物 dict（供接口11 构造响应、接口12 取 final+重绘带用）：
@@ -897,7 +900,7 @@ def _grow_core(image_bgr, hairline_id, *, is_hr, seg_model, erode_cm, swap_mode,
         ext_mask = mask_bool if swap_mode == "ext_mask" else None
         swap_result = _call_swap(image_bgr, hairline_id, is_hr, ext_mask, denoising_strength,
                                  inpainting_fill=inpainting_fill, mask_blur=mask_blur,
-                                 mask_dilate_scale=mask_dilate_scale)
+                                 mask_dilate_scale=mask_dilate_scale, webui_steps=webui_steps)
     t_swap = time.time() - t0
 
     # 步骤3：严格按遮罩硬贴回（无融合，用于对比）
@@ -935,7 +938,7 @@ def generate_hairline_grow(image_bgr, hairline_id, is_hr=False, seg_model="segfo
                            color_match_strength=1.0, mb_feather_px=1,
                            transition_band_px=-1,
                            inpainting_fill=1, mask_blur=11, mask_dilate_scale=1.0,
-                           rid=None):
+                           rid=None, webui_steps=None):
     """接口11 完整管线（**不含重绘**，重绘见接口12 generate_hairline_redraw）。
     返回可直接进 ok() 的 data dict。未检出人脸抛 NoFaceError。
 
@@ -957,7 +960,7 @@ def generate_hairline_grow(image_bgr, hairline_id, is_hr=False, seg_model="segfo
         color_match=color_match, color_match_strength=color_match_strength,
         mb_feather_px=mb_feather_px, transition_band_px=transition_band_px,
         inpainting_fill=inpainting_fill, mask_blur=mask_blur,
-        mask_dilate_scale=mask_dilate_scale, rid=rid)
+        mask_dilate_scale=mask_dilate_scale, rid=rid, webui_steps=webui_steps)
     mask_viz = core["mask_viz"]
     alpha = core["alpha"]
     w, h = core["w"], core["h"]
@@ -1035,7 +1038,7 @@ def generate_hairline_redraw(image_bgr, hairline_id, is_hr=False, seg_model="seg
                              inpainting_fill=1, mask_blur=11, mask_dilate_scale=1.0,
                              comfyui_prompt=None, beauty_alpha=0.6,
                              band_lo_mult=0.5, band_hi_mult=1.5, rid=None,
-                             hair_mask=None):
+                             hair_mask=None, webui_steps=None):
     """接口12 发际线带重绘。内部先跑接口11 核心拿到 ④ final，再取 ⑤-① 发际线重绘带
     （外推↔内推之间、经 baseline 截断只留上部）作遮罩。
 
@@ -1064,7 +1067,7 @@ def generate_hairline_redraw(image_bgr, hairline_id, is_hr=False, seg_model="seg
         mb_feather_px=mb_feather_px, transition_band_px=transition_band_px,
         inpainting_fill=inpainting_fill, mask_blur=mask_blur,
         mask_dilate_scale=mask_dilate_scale, rid=rid, render_viz=False,
-        hair_mask=hair_mask)
+        hair_mask=hair_mask, webui_steps=webui_steps)
     final = core["final"]
     mask_viz = core["mask_viz"]
     w, h = core["w"], core["h"]

static/debug_grow_timing.html

@@ -80,6 +80,17 @@
           <option value="5">5 波浪</option>
         </select>
       </div>
+      <div class="form-group">
+        <label>swap步数</label>
+        <select id="webuiSteps">
+          <option value="">默认(15)</option>
+          <option value="10">10 (最快)</option>
+          <option value="15">15</option>
+          <option value="20">20 (原版)</option>
+          <option value="25">25 (高画质)</option>
+          <option value="30">30</option>
+        </select>
+      </div>
       <button class="btn btn-primary" id="submitBtn" onclick="submitTest()">🚀 开始分析</button>
     </div>
     <div id="statusBar" class="status hidden"></div>
@@ -115,6 +126,8 @@ async function submitTest(){
   const fd = new FormData();
   fd.append('image_file', f);
   fd.append('hair_style', $('hairStyle').value);
+  const _steps = $('webuiSteps').value;
+  if(_steps !== '') fd.append('webui_steps', _steps);
 
   try{
     const r = await fetch(API_BASE+'/api/v1/debug/grow-timing',{