新增: Phase 4 注入 — @[项目] 关联任务/灵感 + 三个工具 path 可选

- Augmentation 新增 extra 字段(项目关联信息/任务关联信息/灵感关联信息)
- ProjectResolver: @[项目] 时自动查前5条进行中任务+前3条待评估灵感
- TaskResolver/IdeaResolver: extra 预留(后续按需追加)
- render_one 渲染 extra 行
- search_files/grep/list_directory path 改为可选,不传时返回引导提示

src-tauri/src/commands/ai/augmentation/inject.rs

@@ -66,6 +66,7 @@ fn render_one(aug: &Augmentation, out: &mut String, label: &str) {
             status,
             description,
             path,
+            extra,
             ..
         } => {
             out.push_str("【");
@@ -85,6 +86,10 @@ fn render_one(aug: &Augmentation, out: &mut String, label: &str) {
                 out.push_str(description);
                 out.push('\n');
             }
+            for line in extra {
+                out.push_str(line);
+                out.push('\n');
+            }
             out.push('\n');
         }
         Augmentation::Task {
@@ -92,6 +97,7 @@ fn render_one(aug: &Augmentation, out: &mut String, label: &str) {
             status,
             description,
             project_name,
+            extra,
             ..
         } => {
             out.push_str("【");
@@ -111,12 +117,17 @@ fn render_one(aug: &Augmentation, out: &mut String, label: &str) {
                 out.push_str(description);
                 out.push('\n');
             }
+            for line in extra {
+                out.push_str(line);
+                out.push('\n');
+            }
             out.push('\n');
         }
         Augmentation::Idea {
             title,
             status,
             description,
+            extra,
             ..
         } => {
             out.push_str("【");
@@ -131,6 +142,10 @@ fn render_one(aug: &Augmentation, out: &mut String, label: &str) {
                 out.push_str(description);
                 out.push('\n');
             }
+            for line in extra {
+                out.push_str(line);
+                out.push('\n');
+            }
             out.push('\n');
         }
         Augmentation::Skill {

src-tauri/src/commands/ai/augmentation/resolvers.rs

@@ -17,6 +17,7 @@ use df_storage::crud::{IdeaRepo, ProjectRepo, TaskRepo};
 use df_storage::db::Database;
 use df_types::augmentation::{Augmentation, MentionRef, ResolveError, SanitizedPath};
 use df_types::types::{IdeaStatus, ProjectStatus, TaskStatus};
+use df_storage::crud::{IdeaQuery, TaskQuery};
 
 use crate::commands::ai::augmentation::registry::ResolverRegistry;
 use crate::commands::ai::augmentation::sanitize::{sanitize_for, ProviderLocality};
@@ -100,6 +101,43 @@ impl MentionResolver for ProjectResolver {
             status,
             description: record.description,
             path,
+            extra: {
+                let mut lines: Vec<String> = Vec::new();
+                // Phase 4:查询该项目的前 5 条未完成任务
+                let task_repo = TaskRepo::new(&self.db);
+                if let Ok(tasks) = task_repo.list_by_query(&TaskQuery {
+                    project_id: Some(id.clone()),
+                    status: Some("in_progress".into()),
+                    limit: Some(5),
+                    ..Default::default()
+                }).await {
+                    if !tasks.is_empty() {
+                        let mut task_lines: Vec<String> = tasks.iter().map(|t| {
+                            format!("  - {} ({})", t.title, t.status)
+                        }).collect();
+                        task_lines.insert(0, format!("进行中任务({}):", tasks.len()));
+                        lines.push(task_lines.join("\n"));
+                    }
+                }
+                // 待评估灵感
+                let idea_repo = IdeaRepo::new(&self.db);
+                if let Ok(ideas) = idea_repo.list_by_query(&IdeaQuery {
+                    limit: Some(3),
+                    ..Default::default()
+                }).await {
+                    let related: Vec<_> = ideas.iter()
+                        .filter(|i| i.status == "pending_review")
+                        .take(3)
+                        .map(|i| format!("  - {} ({})", i.title, i.status))
+                        .collect();
+                    if !related.is_empty() {
+                        let mut idea_lines = vec![format!("待评估灵感({}):", related.len())];
+                        idea_lines.extend(related);
+                        lines.push(idea_lines.join("\n"));
+                    }
+                }
+                lines
+            },
         })
     }
 }
@@ -166,6 +204,7 @@ impl MentionResolver for TaskResolver {
             status,
             description: task.description,
             project_name,
+            extra: vec![],
         })
     }
 }
@@ -220,6 +259,7 @@ impl MentionResolver for IdeaResolver {
             title: record.title,
             status,
             description: record.description,
+            extra: vec![],
         })
     }
 }