Ship as tm with install to GOPATH/bin and sandbox env overrides.

Co-authored-by: Cursor <cursoragent@cursor.com>

internal/config/loader.go

@@ -5,14 +5,28 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strings"
 )
 
+// ResolveHome returns the effective home for config/data paths.
+// TASK_MASTER_HOME overrides the real user home (useful for demos/dev sandboxes).
+func ResolveHome() (string, error) {
+	if h := strings.TrimSpace(os.Getenv(envHome)); h != "" {
+		return filepath.Clean(h), nil
+	}
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return "", fmt.Errorf("resolve home directory: %w", err)
+	}
+	return home, nil
+}
+
 // LoadOrCreate loads the config from disk, creating defaults if missing.
 // It also ensures DataDir and the active project directory exist.
 func LoadOrCreate() (*Config, error) {
-	home, err := os.UserHomeDir()
+	home, err := ResolveHome()
 	if err != nil {
-		return nil, fmt.Errorf("resolve home directory: %w", err)
+		return nil, err
 	}
 
 	cfgPath := Path(home)
@@ -26,6 +40,10 @@ func LoadOrCreate() (*Config, error) {
 		return nil, err
 	}
 
+	if d := strings.TrimSpace(os.Getenv(envDataDir)); d != "" {
+		cfg.DataDir = filepath.Clean(d)
+	}
+
 	if err := ensureDataDirs(cfg); err != nil {
 		return nil, err
 	}
@@ -54,11 +72,12 @@ func readOrCreate(cfgPath, home string) (*Config, error) {
 	return &cfg, nil
 }
 
-// Save writes the config to ~/.config/task-master/config.json.
+// Save writes the config to ~/.config/task-master/config.json
+// (or under TASK_MASTER_HOME when set).
 func Save(cfg *Config) error {
-	home, err := os.UserHomeDir()
+	home, err := ResolveHome()
 	if err != nil {
-		return fmt.Errorf("resolve home directory: %w", err)
+		return err
 	}
 
 	cfgPath := Path(home)