docs: bump OpenClaw node version to 2026.3.28 and align remote maintenance docs

- Update OpenClaw version references from 2026.3.13 to 2026.3.28 in README.md, docs/OPENCLAW_ARCHITECTURE.md, and gateway_plugins.txt.
- Remove outdated MacOS maintenance instructions (log rotation, credential syncing) from remote luca project.
- Redirect remote luca documentation to explicitly refer back to the mw-macbook-pro repository for MacOS-specific routines.
- Updated CHANGELOG to reflect version bump and cross-repo document alignments.
- Removed completed implementation plan.

Co-authored-by: Junie <junie@jetbrains.com>

ml-test/verify_gpu.py

@@ -0,0 +1,44 @@
+import torch
+import numpy as np
+import time
+import coremltools as ct
+
+def test_mps():
+    print("--- Testing PyTorch MPS ---")
+    if not torch.backends.mps.is_available():
+        print("MPS not available.")
+        return
+    
+    device = torch.device("mps")
+    print(f"Using device: {device}")
+    
+    # Create tensors
+    size = 4000
+    x = torch.randn(size, size, device=device)
+    y = torch.randn(size, size, device=device)
+    
+    # Warm up
+    _ = torch.matmul(x, y)
+    torch.mps.synchronize()
+    
+    # Benchmark
+    start = time.time()
+    for _ in range(10):
+        z = torch.matmul(x, y)
+    torch.mps.synchronize()
+    end = time.time()
+    
+    print(f"Matrix multiplication {size}x{size} on MPS took: {(end - start)/10:.4f}s per iteration")
+    print("PyTorch MPS check passed.\n")
+
+def test_coreml():
+    print("--- Testing CoreML ---")
+    # Simple check for CoreML availability and version
+    print(f"CoreML Tools version: {ct.__version__}")
+    # On macOS, CoreML is always available as a system framework.
+    # The actual execution depends on the model's 'compute_units'.
+    print("CoreML framework is available on macOS.\n")
+
+if __name__ == "__main__":
+    test_mps()
+    test_coreml()