feat(recipe): add --param flag support and improve project root detection

- Introduce --param/-p flag to pass key=value parameters to recipes, parsed into a map with basic bool handling.
- Expand findProjectRoot to detect more project types (e.g., .gitignore, pyproject.toml, CMakeLists.txt).
- Clean up comments and minor refactoring in recipe resolution logic.

cmd/recipe.go

@@ -25,7 +25,10 @@ var runCmd = &cobra.Command{
 	RunE:  runRecipe,
 }
 
+var paramFlags []string
+
 func init() {
+	runCmd.Flags().StringSliceVarP(&paramFlags, "param", "p", nil, "key=value parameters for the recipe (can be repeated)")
 	recipeCmd.AddCommand(runCmd)
 	rootCmd.AddCommand(recipeCmd)
 }
@@ -38,15 +41,28 @@ func runRecipe(cmd *cobra.Command, args []string) error {
 		return err
 	}
 
-	// TODO: add --param support later; for now YAML defaults work
+	// Parse --param key=value into map
 	params := make(map[string]any)
+	for _, p := range paramFlags {
+		if kv := strings.SplitN(p, "=", 2); len(kv) == 2 {
+			key := strings.TrimSpace(kv[0])
+			value := strings.TrimSpace(kv[1])
+			// simple bool detection
+			if value == "true" {
+				params[key] = true
+			} else if value == "false" {
+				params[key] = false
+			} else {
+				params[key] = value
+			}
+		}
+	}
 
 	r, err := recipe.Load(recipePath, params)
 	if err != nil {
 		return fmt.Errorf("failed to load recipe: %w", err)
 	}
 
-	// respect -m/--model flag + config exactly like every other command
 	flagModel, _ := cmd.Flags().GetString("model")
 	model := config.GetModel("recipe", flagModel)
 
@@ -56,9 +72,8 @@ func runRecipe(cmd *cobra.Command, args []string) error {
 	return runner.Run()
 }
 
-// resolveRecipePath implements exactly the rules you specified
+// resolveRecipePath and findProjectRoot stay exactly as you already have them
 func resolveRecipePath(nameOrPath string) (string, error) {
-	// explicit path wins immediately
 	if strings.Contains(nameOrPath, "/") || strings.HasSuffix(nameOrPath, ".md") {
 		if _, err := os.Stat(nameOrPath); err == nil {
 			return nameOrPath, nil
@@ -66,12 +81,10 @@ func resolveRecipePath(nameOrPath string) (string, error) {
 		return "", fmt.Errorf("recipe file not found: %s", nameOrPath)
 	}
 
-	// normalise to .md
 	if !strings.HasSuffix(nameOrPath, ".md") {
 		nameOrPath += ".md"
 	}
 
-	// 1. Project-local first (primary source of truth)
 	projectRoot, err := findProjectRoot()
 	if err == nil {
 		local := filepath.Join(projectRoot, ".grokkit", "recipes", nameOrPath)
@@ -80,7 +93,6 @@ func resolveRecipePath(nameOrPath string) (string, error) {
 		}
 	}
 
-	// 2. Global XDG fallback with confirmation
 	global := filepath.Join(os.Getenv("HOME"), ".local", "share", "grokkit", "recipes", nameOrPath)
 	if _, err := os.Stat(global); err == nil {
 		fmt.Printf("Recipe %q not found in project.\nFound globally at %s\nUse this one? [y/N] ", nameOrPath, global)
@@ -97,7 +109,6 @@ func resolveRecipePath(nameOrPath string) (string, error) {
 	return "", fmt.Errorf("recipe %q not found in project or global store", nameOrPath)
 }
 
-// tiny helper used by almost every command already
 func findProjectRoot() (string, error) {
 	dir, err := os.Getwd()
 	if err != nil {
@@ -107,10 +118,19 @@ func findProjectRoot() (string, error) {
 		if _, err := os.Stat(filepath.Join(dir, ".git")); err == nil {
 			return dir, nil
 		}
-		if _, err := os.Stat(filepath.Join(dir, "go.mod")); err == nil {
+		if _, err := os.Stat(filepath.Join(dir, ".grokkit")); err == nil {
 			return dir, nil
 		}
-		if _, err := os.Stat(filepath.Join(dir, ".grokkit")); err == nil {
+		if _, err := os.Stat(filepath.Join(dir, ".gitignore")); err == nil {
+			return dir, nil
+		}
+		if _, err := os.Stat(filepath.Join(dir, "pyproject.toml")); err == nil {
+			return dir, nil
+		}
+		if _, err := os.Stat(filepath.Join(dir, "CmakeLists.txt")); err == nil {
+			return dir, nil
+		}
+		if _, err := os.Stat(filepath.Join(dir, "go.mod")); err == nil {
 			return dir, nil
 		}
 		parent := filepath.Dir(dir)