fix: Don't kill cycle effect when removing non-cycle tags

Previously stop_cycle_effect() was called on every tag removal,
which froze the cycle when a non-cycle tag was removed. Now the
removal logic has three distinct paths:

1. Cycle tag removed → stop cycle, restore other pads
2. Non-cycle tag removed while cycle still active → do nothing,
   let the cycle thread keep controlling all pads
3. Normal removal (no cycle) → just turn off the pad

dimensions_cli_client.py

@@ -122,6 +122,12 @@ DEFAULT_TAG_COLOR = {
 }
 
 
+def _get_tag_effect(legacy_key: int) -> str:
+    """Get the effect type for a tag's legacy key."""
+    config = TAG_COLORS.get(legacy_key, DEFAULT_TAG_COLOR)
+    return config.get('effect', 'solid')
+
+
 def uid_to_legacy_key(uid: bytes) -> int:
     """
     Convert 7-byte UID to legacy integer key format.
@@ -311,26 +317,31 @@ def portal_mode(server_ip, port):
     def on_tag_remove(tag: TagInfo):
         print(f"[-] TAG REMOVED from {tag.pad.name} pad")
         
-        # Check if removed tag had a cycle effect (affects all pads)
+        # Check if the removed tag had a cycle effect
         removed_key = active_pads.get(tag.pad.value)
-        was_cycle = False
+        removed_is_cycle = False
         if removed_key is not None:
-            config = TAG_COLORS.get(removed_key, DEFAULT_TAG_COLOR)
-            was_cycle = config.get('effect', 'solid') == 'cycle'
+            removed_is_cycle = _get_tag_effect(removed_key) == 'cycle'
         
         # Remove from active tracking
         if tag.pad.value in active_pads:
             del active_pads[tag.pad.value]
         
+        # Check if any REMAINING active tag has a cycle effect
+        remaining_cycle = False
+        for pad_val, key in active_pads.items():
+            if _get_tag_effect(key) == 'cycle':
+                remaining_cycle = True
+                break
+        
         if reader:
-            # Stop cycle effect if running (it uses all pads)
+            if removed_is_cycle:
+                # The cycle tag itself was removed - stop cycle and restore pads
                 reader.stop_cycle_effect()
-            # Stop individual pad effect and turn off the removed pad
                 reader.stop_effect(tag.pad)
                 reader.set_pad_color(tag.pad, COLORS['OFF'])
                 
-            # If a cycle effect was running, restore all other pads
-            if was_cycle:
+                # Restore all other pads to their proper state
                 for pad_enum in [Pad.CENTER, Pad.LEFT, Pad.RIGHT]:
                     if pad_enum == tag.pad:
                         continue  # Already handled above
@@ -342,6 +353,17 @@ def portal_mode(server_ip, port):
                         reader.stop_effect(pad_enum)
                         reader.set_pad_color(pad_enum, COLORS['OFF'])
             
+            elif remaining_cycle:
+                # A cycle effect from another tag is still running
+                # Don't stop anything - the cycle thread controls all pads
+                # Just update tracking (already done above)
+                pass
+            
+            else:
+                # Normal removal (no cycle involved at all)
+                reader.stop_effect(tag.pad)
+                reader.set_pad_color(tag.pad, COLORS['OFF'])
+    
     def on_connect():
         print("✓ Portal connected and initialized")
         print()