refactor(runner): improve package path resolution for consistency

- Introduce resolvePackagePath to handle ~ expansion, relative paths, and absolutization at the start.
- Update discoverFiles and executeShellCommands to use the resolved workDir.
- Remove redundant path logic from discoverFiles and shell execution for better maintainability.

internal/recipe/runner.go

@@ -24,6 +24,9 @@ func NewRunner(r *Recipe, client *grok.Client, model string) *Runner {
 func (r *Runner) Run() error {
 	fmt.Printf("🍳 Starting recipe: %s v%s\n\n", r.Recipe.Name, r.Recipe.Version)
 
+	// Resolve package_path once at the start (handles ~, ., etc.)
+	workDir := r.resolvePackagePath()
+
 	var previousResults []string
 	var refactorJSONs []string
 
@@ -34,7 +37,7 @@ func (r *Runner) Run() error {
 
 		switch {
 		case strings.Contains(titleLower, "discover") || strings.Contains(titleLower, "find"):
-			files := r.discoverFiles()
+			files := r.discoverFiles(workDir)
 			result := strings.Join(files, "\n")
 			previousResults = append(previousResults, "Discovered files:\n"+result)
 			fmt.Println(result)
@@ -47,16 +50,14 @@ func (r *Runner) Run() error {
 			r.handleApplyStep(refactorJSONs)
 			continue
 
-		// === NEW: Safe shell command execution ===
 		case strings.Contains(titleLower, "initialize") || strings.Contains(titleLower, "create") ||
 			strings.Contains(titleLower, "run") || strings.Contains(titleLower, "shell") ||
 			strings.Contains(titleLower, "poetry") || strings.Contains(titleLower, "git") ||
 			strings.Contains(titleLower, "tea"):
-			r.executeShellCommands(step, previousResults)
+			r.executeShellCommands(step, previousResults, workDir)
 			continue
 
 		default:
-			// fallback for any other step
 			prompt := fmt.Sprintf(`Recipe Overview:
 %s
 
@@ -91,11 +92,8 @@ Execute this step now. Respond ONLY with the expected output format — no expla
 	return nil
 }
 
-// discoverFiles — fully generic using recipe metadata
-func (r *Runner) discoverFiles() []string {
-	var files []string
-
-	// 1. Use explicit --param package_path if provided
+// resolvePackagePath expands ~, ., and makes the path absolute
+func (r *Runner) resolvePackagePath() string {
 	root := "."
 	if v, ok := r.Recipe.ResolvedParams["package_path"]; ok {
 		if s, ok := v.(string); ok && s != "" {
@@ -103,14 +101,26 @@ func (r *Runner) discoverFiles() []string {
 		}
 	}
 
-	// 2. Smart defaults if no param was given
-	if root == "." {
-		if _, err := os.Stat("src"); err == nil {
-			root = "src"
-		}
+	// Expand ~
+	if strings.HasPrefix(root, "~/") {
+		home, _ := os.UserHomeDir()
+		root = filepath.Join(home, root[2:])
+	} else if root == "~" {
+		root, _ = os.UserHomeDir()
 	}
 
-	// 3. Build allowed extensions from recipe frontmatter
+	// Make absolute
+	abs, err := filepath.Abs(root)
+	if err != nil {
+		abs = root
+	}
+	return abs
+}
+
+// discoverFiles now takes the resolved absolute path
+func (r *Runner) discoverFiles(root string) []string {
+	var files []string
+
 	allowedExt := make(map[string]bool)
 	for _, lang := range r.Recipe.ProjectLanguages {
 		if exts, ok := r.Recipe.Extensions[lang]; ok {
@@ -120,19 +130,13 @@ func (r *Runner) discoverFiles() []string {
 		}
 	}
 
-	// 4. Use a configurable search pattern (defaults to Go-style)
-	searchFor := r.Recipe.SearchPattern
-	if searchFor == "" {
-		searchFor = "if err != nil"
-	}
-
 	_ = filepath.WalkDir(root, func(path string, d os.DirEntry, err error) error {
 		if err != nil || d.IsDir() {
 			return nil
 		}
 		if allowedExt[filepath.Ext(path)] {
 			b, _ := os.ReadFile(path)
-			if strings.Contains(string(b), searchFor) {
+			if strings.Contains(string(b), r.Recipe.SearchPattern) {
 				files = append(files, path)
 			}
 		}
@@ -255,8 +259,9 @@ func createUnifiedPatch(changes []FileChange, patchPath string) error {
 	return nil
 }
 
-// NEW: Safe shell command execution
-func (r *Runner) executeShellCommands(step Step, previousResults []string) {
+// executeShellCommands — safe, whitelisted, boundary-enforced
+func (r *Runner) executeShellCommands(step Step, previousResults []string, workDir string) {
+
 	prompt := fmt.Sprintf(`You are executing shell commands for this step.
 
 Recipe Overview:
@@ -292,7 +297,7 @@ Only use commands from the allowed list. Never use cd, rm -rf, or anything that
 	response := r.Client.Stream(messages, r.Model)
 	fmt.Println()
 
-	// Parse JSON command list
+	// Parse JSON...
 	type ShellCommand struct {
 		Command string   `json:"command"`
 		Args    []string `json:"args"`
@@ -311,14 +316,6 @@ Only use commands from the allowed list. Never use cd, rm -rf, or anything that
 		return
 	}
 
-	// Resolve boundary
-	cwd := "."
-	if v, ok := r.Recipe.ResolvedParams["package_path"]; ok {
-		if s, ok := v.(string); ok && s != "" {
-			cwd = s
-		}
-	}
-
 	for _, cmd := range cmds {
 		fullCmd := cmd.Command
 		if len(cmd.Args) > 0 {
@@ -340,9 +337,9 @@ Only use commands from the allowed list. Never use cd, rm -rf, or anything that
 			continue
 		}
 
-		// Execute with strict cwd
+		// Execute with strict cwd = resolved package_path
 		execCmd := exec.Command(cmd.Command, cmd.Args...)
-		execCmd.Dir = cwd
+		execCmd.Dir = workDir
 		output, err := execCmd.CombinedOutput()
 
 		if err != nil {