Add missing SwiftUI #Preview blocks across 65 views (#1649)

* Add SwiftUI previews for simple helper views

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Co-authored-by: garthvh <1795163+garthvh@users.noreply.github.com>

* Add previews for action buttons, ChannelForm, MetricsColumnDetail, and DeviceOnboarding

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Co-authored-by: garthvh <1795163+garthvh@users.noreply.github.com>

* Add previews for config views, log views, AppLog, Firmware, AppData, and UserConfig

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Co-authored-by: garthvh <1795163+garthvh@users.noreply.github.com>

* Add preview for PositionConfig

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Co-authored-by: garthvh <1795163+garthvh@users.noreply.github.com>

* Fix formatting bugs in #Preview blocks: restore missing .environmentObject/.environment modifiers and add proper tab indentation

Agent-Logs-Url: https://github.com/meshtastic/Meshtastic-Apple/sessions/7eeb7a54-7928-466f-8e39-b00d0012a09d

Co-authored-by: garthvh <1795163+garthvh@users.noreply.github.com>

* Linting fixes

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: garthvh <1795163+garthvh@users.noreply.github.com>
Co-authored-by: Garth Vander Houwen <garthvh@yahoo.com>

Meshtastic/Views/Settings/Config/Module/AmbientLightingConfig.swift

@@ -134,3 +134,10 @@ struct AmbientLightingConfig: View {
 		self.hasChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return AmbientLightingConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/CannedMessagesConfig.swift

@@ -355,3 +355,10 @@ struct CannedMessagesConfig: View {
 		self.hasMessagesChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return CannedMessagesConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/DetectionSensorConfig.swift

@@ -261,3 +261,10 @@ struct DetectionSensorConfig: View {
 		self.hasChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return DetectionSensorConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/ExternalNotificationConfig.swift

@@ -283,3 +283,9 @@ struct ExternalNotificationConfig: View {
 	}
 }
 
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return ExternalNotificationConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/MQTTConfig.swift

@@ -464,3 +464,10 @@ struct MQTTConfig: View {
 		}
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return MQTTConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/PaxCounterConfig.swift

@@ -123,3 +123,10 @@ struct PaxCounterConfig: View {
 		paxcounterUpdateInterval = UpdateInterval(from: Int(node?.paxCounterConfig?.updateInterval ?? 1800))
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return PaxCounterConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/RangeTestConfig.swift

@@ -143,3 +143,10 @@ struct RangeTestConfig: View {
 		self.hasChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return RangeTestConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/RtttlConfig.swift

@@ -114,3 +114,10 @@ struct RtttlConfig: View {
 		self.hasChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return RtttlConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/SerialConfig.swift

@@ -205,3 +205,10 @@ struct SerialConfig: View {
 		self.hasChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return SerialConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/StoreForwardConfig.swift

@@ -197,3 +197,10 @@ struct StoreForwardConfig: View {
 		self.hasChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return StoreForwardConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}

Meshtastic/Views/Settings/Config/Module/TelemetryConfig.swift

@@ -241,3 +241,10 @@ struct TelemetryConfig: View {
 		self.hasChanges = false
 	}
 }
+
+#Preview {
+	let context = PersistenceController.preview.container.viewContext
+	return TelemetryConfig(node: nil)
+		.environmentObject(AccessoryManager.shared)
+		.environment(\.managedObjectContext, context)
+}