feat: 试用过程中的细节优化

server/services/prompts/__init__.py

@@ -36,10 +36,11 @@ def prompt_family(provider: str, model: str | None) -> str:
 
 def build_prompt(provider: str, model: str | None, type_id: str, ctx: dict, style_set: int,
                  lang: str, extra: dict | None = None, style_prompt: str | None = None,
-                 requirements: str | None = None) -> str:
+                 requirements: str | None = None, requirements_exclusive: bool = False) -> str:
     """按模型家族构造指定图类型的完整生图 prompt。参数含义见各家族 build_prompt。"""
     module = _MODULE_BY_FAMILY[prompt_family(provider, model)]
     return module.build_prompt(
         type_id, ctx, style_set, lang,
         extra=extra, style_prompt=style_prompt, requirements=requirements,
+        requirements_exclusive=requirements_exclusive,
     )

server/services/prompts/alibaba.py

@@ -96,12 +96,13 @@ def _prompt_ecommerce_detail(ctx: dict, style: dict, lang: str) -> str:
 
 def _prompt_size_chart(ctx: dict, style: dict, lang: str) -> str:
     dims = params_line_for_output(ctx, lang)
+    annotation = ctx.get("dimension_annotation_instruction") or "Do not invent measurement directions or values."
     return (
         f"Product size chart infographic for \"{ctx['title']}\": product shown in clean front and side views "
-        f"on light background, with thin measurement annotation lines (arrows) marking length, width and height, "
+        f"on light background, with thin measurement annotation lines (arrows) only for supplied dimensions, "
         f"measurement values rendered next to each line"
         + (f" (known specs: {dims})" if dims else "")
-        + f", small caption row, precise technical drawing aesthetic. {style['tone']}. "
+        + f". {annotation} Small caption row, precise technical drawing aesthetic. {style['tone']}. "
         f"{TEXT_RENDER[lang]} {QUALITY} {PRODUCT_REF_LOCK}"
     )
 
@@ -136,7 +137,8 @@ _PROMPT_BUILDERS = {
 
 
 def build_prompt(type_id: str, ctx: dict, style_set: int, lang: str, extra: dict | None = None,
-                 style_prompt: str | None = None, requirements: str | None = None) -> str:
+                 style_prompt: str | None = None, requirements: str | None = None,
+                 requirements_exclusive: bool = False) -> str:
     """构造指定图类型的完整生图 prompt（主体参考语义）。
 
     extra: 方案项信息 {title, detail, prompt_hint}——custom 类型必需，
@@ -145,6 +147,15 @@ def build_prompt(type_id: str, ctx: dict, style_set: int, lang: str, extra: dict
     requirements: 生图要求（最高优先级，强制约束），置于 prompt 最前面，
     声明覆盖一切冲突指令，用户可在此输入强制要求。
     """
+    if requirements_exclusive:
+        return " ".join([
+            requirements_block(requirements),
+            "Execute only the strict requirements above. Do not add marketing layouts, captions, overlays, "
+            "props, default studio styling, or visible text unless explicitly requested.",
+            "Preserve the reference image exactly unless the strict requirements explicitly request a "
+            "specific change. When they do, make only that requested change and preserve everything else.",
+            "Do not make any change that was not explicitly required.",
+        ])
     style = resolve_style(style_set, style_prompt)
     extra = extra or {}
     if type_id == "custom":

server/services/prompts/common.py

@@ -134,11 +134,28 @@ def build_context(raw: dict, fallback_name: str = "", fallback_desc: str = "") -
                 break
 
     dimensions = raw.get("dimensions") or {}
-    dimension_values = (dimensions.get("length"), dimensions.get("width"), dimensions.get("height")) if isinstance(dimensions, dict) else ()
-    dimensions_line = ""
-    if len(dimension_values) == 3 and all(value is not None for value in dimension_values):
-        unit = dimensions.get("unit") or "mm"
-        dimensions_line = "L × W × H: " + " × ".join(str(value) for value in dimension_values) + f" {unit}"
+    known_dimensions: list[tuple[str, object]] = []
+    if isinstance(dimensions, dict):
+        known_dimensions = [
+            (label, dimensions[key]) for key, label in (("length", "length"), ("width", "width"), ("height", "height"))
+            if dimensions.get(key) is not None
+        ]
+    unit = (dimensions.get("unit") or "mm") if isinstance(dimensions, dict) else "mm"
+    dimensions_line = "; ".join(f"{label}: {value} {unit}" for label, value in known_dimensions)
+    known_labels = [label for label, _ in known_dimensions]
+    missing_labels = [label for label in ("length", "width", "height") if label not in known_labels]
+    dimension_annotation_instruction = (
+        "STRICT MEASUREMENT OUTPUT RULE: render exactly "
+        + str(len(known_labels))
+        + " measurement arrows and labels, only for: "
+        + ", ".join(known_labels)
+        + ". The only permitted dimension values are: "
+        + dimensions_line
+        + ". Do not infer product measurements. Do not draw, label, or show an arrow for: "
+        + ", ".join(missing_labels or ["any additional direction"])
+        + ", depth, thickness, diameter, or any other unlisted dimension."
+        if known_dimensions else ""
+    )
     params_line = "; ".join(
         f"{p.get('key')}: {p.get('value')}" for p in (raw.get("params") or [])[:8]
     )
@@ -158,6 +175,7 @@ def build_context(raw: dict, fallback_name: str = "", fallback_desc: str = "") -
             dimensions_line,
         ))),
         "price": raw.get("price") or "",
+        "dimension_annotation_instruction": dimension_annotation_instruction,
     }
 
 def selling_point_lines(ctx: dict, lang: str, max_n: int = 3) -> str:

server/services/prompts/google.py

@@ -98,12 +98,13 @@ def _task_ecommerce_detail(ctx: dict, lang: str) -> str:
 
 def _task_size_chart(ctx: dict, lang: str) -> str:
     dims = params_line_for_output(ctx, lang)
+    annotation = ctx.get("dimension_annotation_instruction") or "Do not invent measurement directions or values."
     return (
         "Create a size chart: the unchanged product in clean front and side views on a light background, "
-        "thin measurement annotation lines (arrows) marking length, width and height with values beside "
+        "thin measurement annotation lines (arrows) only for supplied dimensions with values beside "
         "each line"
         + (f" (known specs: {dims})" if dims else "")
-        + ", small caption row, precise technical-drawing aesthetic."
+        + f". {annotation} Small caption row, precise technical-drawing aesthetic."
     )
 
 def _task_sku_collection(ctx: dict, lang: str) -> str:
@@ -128,8 +129,19 @@ _TASK_BUILDERS = {
 
 
 def build_prompt(type_id: str, ctx: dict, style_set: int, lang: str, extra: dict | None = None,
-                 style_prompt: str | None = None, requirements: str | None = None) -> str:
+                 style_prompt: str | None = None, requirements: str | None = None,
+                 requirements_exclusive: bool = False) -> str:
     """构造指定图类型的 prompt：要求块 → 指令 → 主体锁 → 锚定 → 风格 → 文案 → 画质 → 提醒。"""
+    if requirements_exclusive:
+        return "\n\n".join([
+            requirements_block(requirements),
+            "Edit the first image only as required above. Do not add marketing layouts, captions, overlays, "
+            "props, default studio styling, or visible text unless explicitly requested above.",
+            "PROTECTION: preserve the first image exactly unless the strict requirements explicitly request "
+            "a specific change. When they do, make only that requested change and preserve everything else.",
+            "Final check: follow the strict requirements over every default behavior; do not make changes "
+            "that were not explicitly required.",
+        ])
     style = resolve_style(style_set, style_prompt)
     extra = extra or {}
     hint = (extra.get("prompt_hint") or "").strip()

server/services/prompts/gpt.py

@@ -129,12 +129,13 @@ def _task_ecommerce_detail(ctx: dict, lang: str) -> str:
 
 def _task_size_chart(ctx: dict, lang: str) -> str:
     dims = params_line_for_output(ctx, lang)
+    annotation = ctx.get("dimension_annotation_instruction") or "Do not invent measurement directions or values."
     return (
         "TASK: Measurement chart. Show the unchanged product in clean front and side views on a light "
-        "background; overlay thin technical annotation lines (arrows) marking length, width and height "
-        "with measurement values rendered beside each line"
+        "background; overlay thin technical annotation lines (arrows) only for the supplied dimensions, "
+        "with each measurement value rendered beside its line"
         + (f" (known specs: {dims})" if dims else "")
-        + "; precise technical-drawing aesthetic, small caption row."
+        + f". {annotation}; precise technical-drawing aesthetic, small caption row."
     )
 
 def _task_sku_collection(ctx: dict, lang: str) -> str:
@@ -160,8 +161,21 @@ _TASK_BUILDERS = {
 
 
 def build_prompt(type_id: str, ctx: dict, style_set: int, lang: str, extra: dict | None = None,
-                 style_prompt: str | None = None, requirements: str | None = None) -> str:
+                 style_prompt: str | None = None, requirements: str | None = None,
+                 requirements_exclusive: bool = False) -> str:
     """构造指定图类型的 edits 语义 prompt：要求块 → 编辑指令 → 保真锁 → 锚定 → 风格 → 文案 → 画质 → 终检。"""
+    if requirements_exclusive:
+        # 单张 AI 编辑：用户要求是唯一的画面意图，绝不能被套图的营销图/棚拍/俄文文案覆盖。
+        return "\n\n".join([
+            requirements_block(requirements),
+            "TASK: Edit Image 1 only according to the STRICT REQUIREMENTS above. Do not add marketing "
+            "layouts, captions, overlays, props, default studio styling, or any visible text unless the "
+            "STRICT REQUIREMENTS explicitly ask for them.",
+            "PROTECTION: preserve Image 1 exactly unless the STRICT REQUIREMENTS explicitly request a "
+            "specific change. When they do, make only that requested change and preserve everything else.",
+            "FINAL CHECK: follow the STRICT REQUIREMENTS over every default behavior. Preserve the product "
+            "and do not make any change that is not explicitly required.",
+        ])
     style = resolve_style(style_set, style_prompt)
     extra = extra or {}
     hint = (extra.get("prompt_hint") or "").strip()