fix(prompt): use explicit {{PROGRESS_PATH}} instead of ambiguous progress.md

The agent prompt referenced "progress.md" without a full path, causing
it to be written to the working directory instead of co-located with
prd.json. Add a {{PROGRESS_PATH}} template variable substituted at
runtime, matching the existing {{PRD_PATH}} pattern.

Author: MiniCodeMonkey

embed/embed.go

@@ -22,9 +22,10 @@ var convertPromptTemplate string
 //go:embed detect_setup_prompt.txt
 var detectSetupPromptTemplate string
 
-// GetPrompt returns the agent prompt with the PRD path substituted.
-func GetPrompt(prdPath string) string {
-	return strings.ReplaceAll(promptTemplate, "{{PRD_PATH}}", prdPath)
+// GetPrompt returns the agent prompt with the PRD and progress paths substituted.
+func GetPrompt(prdPath, progressPath string) string {
+	result := strings.ReplaceAll(promptTemplate, "{{PRD_PATH}}", prdPath)
+	return strings.ReplaceAll(result, "{{PROGRESS_PATH}}", progressPath)
 }
 
 // GetInitPrompt returns the PRD generator prompt with the PRD directory and optional context substituted.

embed/embed_test.go

@@ -7,18 +7,29 @@ import (
 
 func TestGetPrompt(t *testing.T) {
 	prdPath := "/path/to/prd.json"
-	prompt := GetPrompt(prdPath)
+	progressPath := "/path/to/progress.md"
+	prompt := GetPrompt(prdPath, progressPath)
 
 	// Verify the PRD path placeholder was substituted
 	if strings.Contains(prompt, "{{PRD_PATH}}") {
 		t.Error("Expected {{PRD_PATH}} to be substituted")
 	}
 
+	// Verify the progress path placeholder was substituted
+	if strings.Contains(prompt, "{{PROGRESS_PATH}}") {
+		t.Error("Expected {{PROGRESS_PATH}} to be substituted")
+	}
+
 	// Verify the PRD path appears in the prompt
 	if !strings.Contains(prompt, prdPath) {
 		t.Errorf("Expected prompt to contain PRD path %q", prdPath)
 	}
 
+	// Verify the progress path appears in the prompt
+	if !strings.Contains(prompt, progressPath) {
+		t.Errorf("Expected prompt to contain progress path %q", progressPath)
+	}
+
 	// Verify the prompt contains key instructions
 	if !strings.Contains(prompt, "chief-complete") {
 		t.Error("Expected prompt to contain chief-complete instruction")

embed/prompt.txt

@@ -5,17 +5,17 @@ You are an autonomous coding agent working on a software project.
 ## Your Task
 
 1. Read the PRD at `{{PRD_PATH}}`
-2. Read `progress.md` if it exists (check Codebase Patterns section first)
+2. Read `{{PROGRESS_PATH}}` if it exists (check Codebase Patterns section first)
 3. Pick the **highest priority** user story where `passes: false` -- After determining which story to work on, output exact story id, e.g.: <ralph-status>US-056</ralph-status>
 4. Implement that single user story
 5. Run quality checks (e.g., typecheck, lint, test - use whatever your project requires)
 6. If checks pass, commit ALL changes with message: `feat: [Story ID] - [Story Title]`
 7. Update the PRD to set `passes: true` for the completed story
-8. Append your progress to `progress.md`
+8. Append your progress to `{{PROGRESS_PATH}}`
 
 ## Progress Report Format
 
-APPEND to progress.md (never replace, always append):
+APPEND to `{{PROGRESS_PATH}}` (never replace, always append):
 ```
 ## [Date/Time] - [Story ID]
 - What was implemented
@@ -31,7 +31,7 @@ The learnings section is critical - it helps future iterations avoid repeating m
 
 ## Consolidate Patterns
 
-If you discover a **reusable pattern** that future iterations should know, add it to the `## Codebase Patterns` section at the TOP of progress.md (create it if it doesn't exist). This section should consolidate the most important learnings:
+If you discover a **reusable pattern** that future iterations should know, add it to the `## Codebase Patterns` section at the TOP of `{{PROGRESS_PATH}}` (create it if it doesn't exist). This section should consolidate the most important learnings:
 
 ```
 ## Codebase Patterns
@@ -63,4 +63,4 @@ If there are still stories with `passes: false`, end your response normally (ano
 - Work on ONE story per iteration
 - Commit frequently
 - Keep CI green
-- Read the Codebase Patterns section in progress.md before starting
+- Read the Codebase Patterns section in `{{PROGRESS_PATH}}` before starting

internal/loop/loop.go

@@ -78,7 +78,7 @@ func NewLoopWithWorkDir(prdPath, workDir string, prompt string, maxIter int) *Lo
 // NewLoopWithEmbeddedPrompt creates a new Loop instance using the embedded agent prompt.
 // The PRD path placeholder in the prompt is automatically substituted.
 func NewLoopWithEmbeddedPrompt(prdPath string, maxIter int) *Loop {
-	prompt := embed.GetPrompt(prdPath)
+	prompt := embed.GetPrompt(prdPath, prd.ProgressPath(prdPath))
 	return NewLoop(prdPath, prompt, maxIter)
 }
 

internal/loop/manager.go

@@ -225,7 +225,7 @@ func (m *Manager) Start(name string) error {
 	// Create a new loop instance, using worktree-aware constructor if WorktreeDir is set.
 	// When no worktree is configured, run from the project root (baseDir) so that
 	// CLAUDE.md and other project-level files are visible to Claude.
-	prompt := embed.GetPrompt(instance.PRDPath)
+	prompt := embed.GetPrompt(instance.PRDPath, prd.ProgressPath(instance.PRDPath))
 	workDir := instance.WorktreeDir
 	if workDir == "" {
 		m.mu.RLock()