refactor(driver): harden preset parsing and refresh tooling

dev.py

@@ -3,11 +3,12 @@
 import subprocess
 import serial
 import sys
+from pathlib import Path
 
 print(sys.argv)
 
 # Extract port (first arg if it's not a command)
-commands = ["src", "lib", "ls", "reset", "follow", "db"]
+commands = ["src", "lib", "ls", "reset", "follow", "db", "test"]
 port = None
 if len(sys.argv) > 1 and sys.argv[1] not in commands:
     port = sys.argv[1]
@@ -51,3 +52,27 @@ for cmd in sys.argv[1:]:
                 subprocess.call(["mpremote", "connect", port, "fs", "cp", "-r", "db", ":" ])
             else:
                 print("Error: Port required for 'db' command")
+        case "test":
+            if port:
+                if "all" in sys.argv[1:]:
+                    test_files = sorted(
+                        str(path)
+                        for path in Path("test").rglob("*.py")
+                        if path.is_file()
+                    )
+                    failed = []
+                    for test_file in test_files:
+                        print(f"Running {test_file}")
+                        code = subprocess.call(
+                            ["mpremote", "connect", port, "run", test_file]
+                        )
+                        if code != 0:
+                            failed.append((test_file, code))
+                    if failed:
+                        print("Some tests failed:")
+                        for test_file, code in failed:
+                            print(f"  {test_file} (exit {code})")
+                else:
+                    subprocess.call(["mpremote", "connect", port, "run", "test/all.py"])
+            else:
+                print("Error: Port required for 'test' command")