新增: 父⑤⑤.2收尾(评分拆const+表单补全+css陷阱) + priority跨层映射修复

父⑤⑤.2(DEC-03 c / DEC-04 a):
- #6 scoring.rs 关键词拆 const(FEASIBILITY_POS/NEG + IMPACT + URGENCY 4 组,零行为变化,df-ideas 22 测试过)
- #9/#10 Ideas.vue 表单补 tags(逗号分隔对标 KnowledgeDetail)+priority 下拉+source,i18n 中英对称
- css 陷阱修:components.css .modal-* 通配→"modal 系列"(避 */ 闭合,memory css-comment-star-slash-trap)

priority 跨层映射修复(verify agent 发现的预存 bug):
- idea.rs priority_from_i32 原跟 df-types 枚举(0=Low),与前端约定(0=critical,api/types.ts:141+Tasks.vue)反
- 改手动映射对齐前端(0=Critical/1=High/2=Medium/3=Low),Priority as_str 序列化不受影响
- 校验注释同步更正(我父①①.3 加的 Low=0 注释)

父⑤ 全闭环(⑤.1/①.4/⑤.2)。css warning 清零。

src-tauri/src/commands/idea.rs

@@ -78,7 +78,7 @@ pub async fn create_idea(
     // 防 LLM/前端传 99 等被静默吞为 Critical。
     if !(0..=3).contains(&input.priority) {
         return Err(format!(
-            "priority 必须在 0..=3 (Low=0/Medium=1/High=2/Critical=3),收到 {}",
+            "priority 必须在 0..=3 (0=critical/1=high/2=medium/3=low,对齐前端约定 api/types.ts:141),收到 {}",
             input.priority
         ));
     }
@@ -425,13 +425,18 @@ fn record_to_idea(record: &IdeaRecord) -> Idea {
     }
 }
 
-/// i32 优先级 → Priority 枚举（与 df-types 枚举值一致：Low=0/Medium=1/High=2/Critical=3）
+/// i32 优先级 → Priority 枚举(对齐**前端约定** 0=critical/1=high/2=medium/3=low,
+/// 见 api/types.ts:141 + Tasks.vue option + constants/project.ts PRIORITY_CLASS)。
+/// 注:df-types Priority 枚举 discriminant 是 Low=0/Critical=3(历史定义,与前端相反),
+/// 故本函数手动映射对齐前端语义,不靠 discriminant。Priority as_str 序列化("low"/"critical")
+/// 不受影响。verify agent 发现的预存跨层 bug(父⑤⑤.2 收尾揪出):原 0=>Low 致 Ideas
+/// 表单选 Critical(P0) 存 Low,标签与实际存储/评分相反。
 fn priority_from_i32(p: i32) -> Priority {
     match p {
-        0 => Priority::Low,
-        2 => Priority::High,
-        x if x >= 3 => Priority::Critical,
-        _ => Priority::Medium,
+        0 => Priority::Critical,
+        1 => Priority::High,
+        2 => Priority::Medium,
+        _ => Priority::Low,
     }
 }