feat(daemon): add daemon mode with C&C and display abstraction

- Add display abstraction with swappable backends (TerminalDisplay, NullDisplay)
- Separate C&C into RX/TX topics for serial-like communication
- Add StreamController with automatic ntfy topic warmup
- Add performance monitoring for render + display stages
- Update AGENTS.md and README.md with daemon/cmd operating procedures
- Add clean/clobber tasks to mise.toml
- Add tests for display, effects controller, and controller warmup
- Fix bug where /effects reorder command was unreachable

engine/effects/controller.py

@@ -52,6 +52,12 @@ def handle_effects_command(cmd: str) -> str:
     if parts[1] == "stats":
         return _format_stats()
 
+    if parts[1] == "reorder" and len(parts) >= 3:
+        new_order = parts[2].split(",")
+        if chain and chain.reorder(new_order):
+            return f"Reordered pipeline: {new_order}"
+        return "Failed to reorder pipeline"
+
     if len(parts) < 3:
         return "Usage: /effects <name> on|off|intensity <value>"
 
@@ -81,12 +87,6 @@ def handle_effects_command(cmd: str) -> str:
         except ValueError:
             return "Invalid intensity value"
 
-    if action == "reorder" and len(parts) >= 3:
-        new_order = parts[2].split(",")
-        if chain and chain.reorder(new_order):
-            return f"Reordered pipeline: {new_order}"
-        return "Failed to reorder pipeline"
-
     return f"Unknown action: {action}"