asw-v01: modern CSS reset, fix README token docs, add watch.py live rebuild

- Rewrite 00-reset.css with :where()-wrapped zero-specificity rules
- Fix README token docs (--asw-* was incorrect, actual tokens use bare --*)
- Add watch.py (pyinotify-based auto-rebuild of dist/asw.css on src/ changes)

watch.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+"""Watch src/ for changes and rebuild dist/asw.css."""
+
+import os
+import subprocess
+import pyinotify
+
+WATCH_DIR = os.path.expanduser("~/projects/asw/src")
+BUILD_CMD = ["npm", "run", "build"]
+
+class RebuildHandler(pyinotify.ProcessEvent):
+    def process_default(self, event):
+        if event.name and event.name.endswith(".css"):
+            print(f"[watch] {event.name} changed → rebuilding...")
+            result = subprocess.run(BUILD_CMD, cwd=os.path.dirname(WATCH_DIR),
+                                    capture_output=True, text=True)
+            if result.returncode == 0:
+                print("[watch] Build OK")
+            else:
+                print(f"[watch] Build FAILED:\n{result.stderr}")
+
+def main():
+    wm = pyinotify.WatchManager()
+    mask = pyinotify.IN_MODIFY | pyinotify.IN_CREATE | pyinotify.IN_DELETE
+    handler = RebuildHandler()
+    notifier = pyinotify.Notifier(wm, handler)
+    wm.add_watch(WATCH_DIR, mask, rec=True)
+    print(f"[watch] Watching {WATCH_DIR} for changes. Ctrl+C to stop.")
+    notifier.loop()
+
+if __name__ == "__main__":
+    main()