chore: restructure llm plugin to be more coherent & fix various bugs in llm ui

Modules/Notifications/Sidebar/Chat/Content/ContentBubble.qml

@@ -10,12 +10,13 @@ Item {
 	id: root
 
 	required property bool isUser
-	required property LlmSegment segment
+	required property string text
+	required property var blocks
+	required property bool running
 	required property bool hovered
 	required property Repeater repeater
 	required property int index
 	required property ChatMessage message
-	required property ChatGeneration current
 
 	readonly property real contentMaxWidth: width - Tokens.spacing.extraSmall - Tokens.spacing.extraLarge
 
@@ -34,7 +35,7 @@ Item {
 		radius: Tokens.rounding.medium
 		color: root.isUser ? Colors.palette.m3primary : Colors.palette.m3surfaceContainer
 		implicitWidth: layoutFrozen ? frozenWidth : layoutWidth
-		implicitHeight: root.isUser ? msgText.contentHeight + Tokens.padding.medium * 2 : blocks.implicitHeight + blocks.anchors.topMargin * 2
+		implicitHeight: root.isUser ? msgText.contentHeight + Tokens.padding.medium * 2 : markdown.implicitHeight + markdown.anchors.topMargin * 2
 		anchors.right: root.isUser ? parent.right : undefined
 		layer.enabled: false
 		layer.smooth: true
@@ -74,7 +75,7 @@ Item {
 		TextEditBase {
 			id: msgText
 
-			property string cachedText: root.segment.text
+			property string cachedText: root.text
 			property bool cancelled: false
 
 			visible: root.isUser
@@ -88,7 +89,7 @@ Item {
 			font: Tokens.font.body.small
 			readOnly: true
 			selectionColor: Qt.alpha((root.isUser ? Colors.palette.m3onPrimary : Colors.palette.m3primary), 0.4)
-			text: root.isUser ? root.segment.text : ""
+			text: root.isUser ? root.text : ""
 			textFormat: CustomText.MarkdownText
 			wrapMode: Text.WordWrap
 
@@ -129,23 +130,22 @@ Item {
 			}
 		}
 
-		// Assistant content: parsed markdown blocks.
 		MarkdownBlocks {
-			id: blocks
+			id: markdown
 
 			visible: !root.isUser
 			anchors.topMargin: Tokens.padding.medium
 			anchors.top: parent.top
 			anchors.left: parent.left
 			anchors.right: parent.right
-			blocks: root.segment.markdown
+			blocks: root.blocks
 		}
 	}
 
 	Actions {
 		id: actionsRow
 
-		readonly property bool shouldBeActive: (root.segment.type === LlmSegment.Type.Content) && !root.segment.running && root.repeater.count === (root.index + 1)
+		readonly property bool shouldBeActive: !root.running && root.repeater.count === (root.index + 1)
 
 		anchors.left: parent.left
 		anchors.right: (implicitWidth > bubble.implicitWidth) ? undefined : bubble.right
@@ -156,8 +156,7 @@ Item {
 		edit: msgText
 		hovered: root.hovered
 		isUser: root.isUser
-		segment: root.segment
-		current: root.current
+		running: root.running
 		message: root.message
 
 		Behavior on opacity {