feat(preset): Add enable_message_overlay to presets

- Add enable_message_overlay field to PipelinePreset dataclass
- Enable message overlay in demo, ui, and firehose presets
- Add test-message-overlay preset for testing
- Update preset loader to support new field from TOML files

engine/pipeline/presets.py

@@ -59,6 +59,7 @@ class PipelinePreset:
     viewport_height: int = 24  # Viewport height in rows
     source_items: list[dict[str, Any]] | None = None  # For ListDataSource
     enable_metrics: bool = True  # Enable performance metrics collection
+    enable_message_overlay: bool = False  # Enable ntfy message overlay
 
     def to_params(self) -> PipelineParams:
         """Convert to PipelineParams (runtime configuration)."""
@@ -113,6 +114,7 @@ class PipelinePreset:
             viewport_height=data.get("viewport_height", 24),
             source_items=data.get("source_items"),
             enable_metrics=data.get("enable_metrics", True),
+            enable_message_overlay=data.get("enable_message_overlay", False),
         )
 
 
@@ -124,6 +126,7 @@ DEMO_PRESET = PipelinePreset(
     display="pygame",
     camera="scroll",
     effects=["noise", "fade", "glitch", "firehose"],
+    enable_message_overlay=True,
 )
 
 UI_PRESET = PipelinePreset(
@@ -134,6 +137,7 @@ UI_PRESET = PipelinePreset(
     camera="scroll",
     effects=["noise", "fade", "glitch"],
     border=BorderMode.UI,
+    enable_message_overlay=True,
 )
 
 POETRY_PRESET = PipelinePreset(
@@ -170,6 +174,7 @@ FIREHOSE_PRESET = PipelinePreset(
     display="pygame",
     camera="scroll",
     effects=["noise", "fade", "glitch", "firehose"],
+    enable_message_overlay=True,
 )
 
 FIXTURE_PRESET = PipelinePreset(

presets.toml

@@ -62,6 +62,7 @@ effects = []  # Demo script will add/remove effects dynamically
 camera_speed = 0.1
 viewport_width = 80
 viewport_height = 24
+enable_message_overlay = true
 
 [presets.demo-pygame]
 description = "Demo: Pygame display version"
@@ -72,6 +73,7 @@ effects = []  # Demo script will add/remove effects dynamically
 camera_speed = 0.1
 viewport_width = 80
 viewport_height = 24
+enable_message_overlay = true
 
 [presets.demo-camera-showcase]
 description = "Demo: Camera mode showcase"
@@ -82,6 +84,18 @@ effects = []  # Demo script will cycle through camera modes
 camera_speed = 0.5
 viewport_width = 80
 viewport_height = 24
+enable_message_overlay = true
+
+[presets.test-message-overlay]
+description = "Test: Message overlay with ntfy integration"
+source = "headlines"
+display = "terminal"
+camera = "feed"
+effects = ["hud"]
+camera_speed = 0.1
+viewport_width = 80
+viewport_height = 24
+enable_message_overlay = true
 
 # ============================================
 # SENSOR CONFIGURATION