ファイル参照を与えた際に自動的に読ませる実装

crates/llm-worker/src/interceptor.rs

@@ -17,12 +17,18 @@ use crate::tool::{Tool, ToolCall, ToolMeta, ToolResult};
 // =============================================================================
 
 /// Action after prompt submission.
-#[derive(Debug, Clone, PartialEq, Eq)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum PromptAction {
     /// Proceed normally.
     Continue,
     /// Cancel with a reason.
     Cancel(String),
+    /// Proceed, and append these items to history right after the user
+    /// message. Mirrors [`TurnEndAction::ContinueWithMessages`] for the
+    /// submit edge: lets the upper layer attach resolver-produced
+    /// system messages (e.g. `@<path>` file content) so they sit
+    /// adjacent to the user message that referenced them.
+    ContinueWith(Vec<Item>),
 }
 
 /// Action before an LLM request.

crates/llm-worker/src/worker.rs

@@ -1338,16 +1338,20 @@ impl<C: LlmClient> Worker<C, Locked> {
         self.reset_interruption_state();
         // Interceptor: on_prompt_submit
         let mut user_item = Item::user_message(user_input);
-        match self.interceptor.on_prompt_submit(&mut user_item).await {
+        let extras = match self.interceptor.on_prompt_submit(&mut user_item).await {
             PromptAction::Cancel(reason) => {
                 self.last_run_interrupted = true;
                 return self
                     .finalize_interruption(Err(WorkerError::Aborted(reason)))
                     .await;
             }
-            PromptAction::Continue => {}
-        }
+            PromptAction::Continue => Vec::new(),
+            PromptAction::ContinueWith(items) => items,
+        };
         self.history.push(user_item);
+        if !extras.is_empty() {
+            self.history.extend(extras);
+        }
         let result = self.run_turn_loop().await;
         self.finalize_interruption(result).await
     }