refactor(cli): rename standalone uv-compile command to uv-sync

The command performs collect→compile→install (full pipeline),
not just compile. uv-sync better reflects the actual behavior.

The --uv-compile flag on other commands (install, reinstall,
update, fix, etc.) is intentionally kept as-is: it reads as
a mechanism descriptor ("use uv pip compile to resolve deps")
rather than a reference to the standalone command name.

cm_cli/__main__.py

@@ -1393,7 +1393,7 @@ def _run_unified_resolve():
 
 
 @app.command(
-    "uv-compile",
+    "uv-sync",
     help="Batch-resolve and install all custom node dependencies via uv pip compile.",
 )
 def unified_uv_compile(