优化: AR-10 想法→灵感文案统一（13 文件）

用户可见文案 + 后端错误信息 + LLM 工具描述/系统提示词 + store toast + 注释统一改灵感：
i18n zh-CN(ideas/aiTool/projectDetail) + idea.rs 错误 + tool_registry/prompt LLM + stores/project toast + api/views 注释
en 版待定（用 Ideas/Idea）+ docs/crates 注释低优先本轮略；cargo check/vue-tsc 0 error

src-tauri/src/commands/ai/tool_registry.rs

@@ -109,7 +109,7 @@ pub fn build_ai_tool_registry(db: &Arc<Database>) -> AiToolRegistry {
         })},
     );
     registry.register(
-        "list_ideas", "列出所有想法",
+        "list_ideas", "列出所有灵感",
         df_ai::ai_tools::object_schema(vec![]), RiskLevel::Low,
         { let db = db.clone(); Box::new(move |_args: serde_json::Value| {
             let db = db.clone();
@@ -265,7 +265,7 @@ pub fn build_ai_tool_registry(db: &Arc<Database>) -> AiToolRegistry {
         })},
     );
     registry.register(
-        "create_idea", "捕获一个新想法",
+        "create_idea", "捕获一个新灵感",
         df_ai::ai_tools::object_schema(vec![("title", "string", true), ("description", "string", false), ("tags", "string", false), ("source", "string", false)]),
         RiskLevel::Medium,
         { let db = db.clone(); Box::new(move |args: serde_json::Value| {