新增: 初始化 DevFlow 项目仓库

Tauri 2 + Vue 3 + Vite 6 桌面应用，Rust workspace 含 13 个 crate
(df-ai / df-storage / df-workflow / df-core / df-execute 等)。
核心能力：AI 聊天 agentic 循环(工具调用+人工审批)、工作流引擎、
任务/想法/项目/阶段管理、可追溯性，及配套前端组件。

crates/df-ideas/src/capture.rs

@@ -0,0 +1,98 @@
+//! 想法捕获 — 快速记录与管理
+
+use serde::{Deserialize, Serialize};
+
+use df_core::types::{IdeaId, Priority};
+
+/// 捕获一个新想法的输入
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct CaptureInput {
+    /// 标题
+    pub title: String,
+    /// 详细描述
+    pub description: String,
+    /// 优先级
+    #[serde(default)]
+    pub priority: Priority,
+    /// 标签
+    #[serde(default)]
+    pub tags: Vec<String>,
+    /// 来源（如 "用户输入"、"AI 生成"、"会议记录"）
+    pub source: Option<String>,
+}
+
+/// 想法实体
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Idea {
+    /// 唯一 ID
+    pub id: IdeaId,
+    /// 标题
+    pub title: String,
+    /// 详细描述
+    pub description: String,
+    /// 当前状态
+    pub status: df_core::types::IdeaStatus,
+    /// 优先级
+    pub priority: Priority,
+    /// 评分
+    pub scores: Option<IdeaScores>,
+    /// 标签
+    pub tags: Vec<String>,
+    /// 来源
+    pub source: Option<String>,
+    /// 关联的想法 ID
+    pub related_ids: Vec<IdeaId>,
+    /// 创建时间
+    pub created_at: chrono::DateTime<chrono::Utc>,
+    /// 更新时间
+    pub updated_at: chrono::DateTime<chrono::Utc>,
+}
+
+/// 想法评分详情
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct IdeaScores {
+    /// 可行性评分 (0-10)
+    pub feasibility: f64,
+    /// 影响力评分 (0-10)
+    pub impact: f64,
+    /// 紧急度评分 (0-10)
+    pub urgency: f64,
+    /// 综合评分 (加权平均)
+    pub overall: f64,
+}
+
+/// 想法捕获器
+pub struct IdeaCapture;
+
+impl IdeaCapture {
+    /// 捕获一个新想法
+    ///
+    /// TODO: 接入存储层持久化
+    pub fn capture(input: CaptureInput) -> Idea {
+        let now = chrono::Utc::now();
+        Idea {
+            id: df_core::types::new_id(),
+            title: input.title,
+            description: input.description,
+            status: df_core::types::IdeaStatus::Draft,
+            priority: input.priority,
+            scores: None,
+            tags: input.tags,
+            source: input.source,
+            related_ids: Vec::new(),
+            created_at: now,
+            updated_at: now,
+        }
+    }
+
+    /// 快速捕获（仅标题）
+    pub fn quick_capture(title: String) -> Idea {
+        Self::capture(CaptureInput {
+            title,
+            description: String::new(),
+            priority: Priority::default(),
+            tags: Vec::new(),
+            source: None,
+        })
+    }
+}