huskies: merge 819

server/src/agents/pool/start/spawn.rs

@@ -102,6 +102,23 @@ pub(super) async fn run_agent_spawn(
         }
     };
 
+    // Step 1.5: Update the source map for changed files since master.
+    // Non-blocking — failures are logged but do not gate the spawn.
+    {
+        let wt_path_for_map = wt_info.path.clone();
+        let base_for_map = wt_info.base_branch.clone();
+        let map_path = project_root_clone.join(".huskies").join("source-map.json");
+        match tokio::task::spawn_blocking(move || {
+            source_map_gen::update_for_worktree(&wt_path_for_map, &base_for_map, &map_path)
+        })
+        .await
+        .unwrap_or_else(|e| Err(e.to_string()))
+        {
+            Ok(()) => {}
+            Err(e) => slog_error!("[agents] source map update for {sid}: {e}"),
+        }
+    }
+
     // Step 2: store worktree info and render agent command/args/prompt.
     let wt_path_str = wt_info.path.to_string_lossy().to_string();
     {
@@ -151,6 +168,14 @@ pub(super) async fn run_agent_spawn(
         prompt.push_str(&local);
     }
 
+    // Append a reference to the source map if the file was written.
+    let source_map_path = project_root_clone.join(".huskies").join("source-map.json");
+    if source_map_path.exists() {
+        prompt.push_str(
+            "\n\nA source map of well-documented changed files is at `.huskies/source-map.json`.",
+        );
+    }
+
     // Build the effective prompt and determine resume session.
     //
     // When resuming a previous session, discard the full rendered prompt