fix: resolve confirmed character hidden bug, remove online font dependency, improve UI/UX experience

lib/prompts/novel-promotion/select_prop.en.txt

@@ -1,6 +1,6 @@
-You are a prop asset extractor.
+You are a key story prop extractor.
 
-Task: identify reusable physical props from the input text and return JSON only.
+Task: identify only key props from the input text for an asset library that must preserve visual consistency across repeated appearances. Be conservative. Return JSON only.
 
 Output format:
 {
@@ -12,16 +12,38 @@ Output format:
   ]
 }
 
-Rules:
-1. Only include concrete reusable physical props that actually appear in the story.
-2. Only output `name` and `summary`.
-3. `name` and `summary` must both be non-empty.
-4. Do not repeat props that already exist in the prop library with the exact same name.
-5. Exclude abstract concepts, powers, roles, places, creatures, outfits, and makeup.
-6. Keep names stable and short.
-7. Keep summaries objective.
-8. If none exist, return {"props": []}.
-9. Replace raw quotation marks inside JSON string values with corner brackets「」.
+Key prop criteria:
+1. It must be a real physical object that actually appears in the story.
+2. It must serve a clear story function rather than being background dressing.
+3. It must satisfy at least one of the following:
+   - characters hold it, use it, fight over it, deliver it, hide it, lose it, or search for it
+   - it is a key tool, weapon, artifact, piece of evidence, token, key, or clue carrier
+   - it is likely to reappear and therefore needs a consistent visual design
+   - removing it would materially weaken plot comprehension or a key action
+
+Strictly exclude:
+1. Ordinary background items, furniture, tableware, food, drinks, daily necessities, and decorations.
+2. Objects that are only mentioned in passing and have no story function.
+3. Environmental elements that belong to the scene unless they are explicitly used as key props.
+4. Ordinary clothing, makeup, and accessories unless they are themselves key clues or tokens.
+5. Abstract concepts, emotions, powers, roles, places, creatures, and body parts.
+
+Decision bias:
+1. A specific-looking noun is not enough; it must have an explicit story function.
+2. If an object could be either a background item or a prop, treat it as background and do not output it.
+3. If it merely appears but is not used, emphasized, or plot-relevant, do not output it.
+4. If you are unsure whether it deserves an asset entry, do not output it.
+5. Prefer under-extraction. Never output props just to increase the count.
+
+Output rules:
+1. Only output `name` and `summary`.
+2. `name` and `summary` must both be non-empty.
+3. Do not repeat props that already exist in the prop library with the exact same name.
+4. Keep names stable and short.
+5. Keep summaries objective.
+6. Usually output no more than 3-5 props unless more are clearly all key props.
+7. If none exist, return {"props": []}.
+8. Replace raw quotation marks inside JSON string values with corner brackets「」.
 
 Input:
 {input}

lib/prompts/novel-promotion/select_prop.zh.txt

@@ -1,6 +1,6 @@
-你是“故事道具资产分析师”。
+你是“关键剧情道具资产分析师”。
 
-任务：从输入文本中识别适合做成长期复用资产的道具，只返回 JSON，不得包含任何额外解释或 markdown。
+任务：从输入文本中只识别【关键道具】，用于建立需要长期保持外观一致的资产库。宁缺毋滥。只返回 JSON，不得包含任何额外解释或 markdown。
 
 输出格式：
 {
@@ -12,16 +12,38 @@
   ]
 }
 
-规则：
-1. 只保留在剧情中真实出现、可被反复引用、值得进入资产库的实体道具。
-2. 只输出两个字段：name、summary。
-3. name 不能为空；summary 不能为空。
-4. 如果道具库里已经有完全同名道具，不要重复输出。
-5. 禁止输出抽象概念、情绪、能力、身份、地点、生物、服装妆容。
-6. 名称尽量简洁稳定，例如“青铜匕首”“录音笔”“红绳手链”。
-7. summary 只写客观描述，不写剧情推断。
-8. 如果没有合适道具，返回 {"props": []}。
-9. JSON 字符串值中的引号统一替换为「」。
+关键道具判定标准：
+1. 必须是剧情中真实出现的实体物件。
+2. 必须在剧情中承担明确功能，而不只是背景摆设。
+3. 必须至少满足以下一种情况：
+   - 被角色持有、使用、争夺、交付、隐藏、丢失、寻找
+   - 是推进情节的关键工具、武器、法器、证物、信物、钥匙、线索载体
+   - 后续大概率需要重复出镜，且需要保持外观一致
+   - 去掉它会明显影响剧情理解或关键动作成立
+
+严格不提取：
+1. 普通背景陈设、家具、餐具、食物、饮料、日用品、装饰物。
+2. 仅被顺带提及、没有剧情功能的物件。
+3. 场景自带的环境元素，除非它被明确当作关键道具使用。
+4. 普通服装、妆容、饰品，除非它本身就是关键线索或关键信物。
+5. 抽象概念、情绪、能力、身份、地点、生物、身体部位。
+
+判断倾向：
+1. 仅因外观具体、名词明确，不足以成为关键道具；必须有明确剧情作用。
+2. 如果一个物件既可能是背景物，也可能是道具，默认按背景物处理，不输出。
+3. 如果只是“出现过”，但没有“被使用/被强调/影响剧情”，不输出。
+4. 如果不确定它是否值得进入资产库，直接不输出。
+5. 优先少报，禁止为了凑数量而输出。
+
+输出要求：
+1. 只输出两个字段：name、summary。
+2. name 不能为空；summary 不能为空。
+3. 如果道具库里已经有完全同名道具，不要重复输出。
+4. 名称尽量简洁稳定，例如“青铜匕首”“录音笔”“红绳手链”。
+5. summary 只写客观描述，不写剧情推断。
+6. 通常不超过 3-5 个；只有确实都是关键道具时才可更多。
+7. 如果没有合适道具，返回 {"props": []}。
+8. JSON 字符串值中的引号统一替换为「」。
 
 输入文本：
 {input}