fix: only write RAW_NARRATIVE.md when user explicitly provides project_dir

Previously appendRawNarrative was called with the server's default workDir
(os.Getwd()) when no project_dir was in the request, causing test runs and
any elaboration without a project to pollute the repo's own RAW_NARRATIVE.md.

The narrative is per-project human input — only write it when the caller
explicitly specifies which project they're working in.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/internal/api/elaborate.go b/internal/api/elaborate.go
index c6d08f4..5df772e 100644
--- a/internal/api/elaborate.go
+++ b/internal/api/elaborate.go
@@ -216,8 +216,12 @@ func (s *Server) handleElaborateTask(w http.ResponseWriter, r *http.Request) {
 		workDir = input.ProjectDir
 	}
 
-	// Append verbatim user input to RAW_NARRATIVE.md in the background (best effort).
-	go s.appendRawNarrative(workDir, input.Prompt)
+	// Append verbatim user input to RAW_NARRATIVE.md only when the user explicitly
+	// provided a project_dir — the narrative is per-project human input, not a
+	// server-level log.
+	if input.ProjectDir != "" {
+		go s.appendRawNarrative(workDir, input.Prompt)
+	}
 
 	projectContext := readProjectContext(workDir)
 	fullPrompt := input.Prompt