feat(webview): add batchNearby utility for smarter tool ask batching

webview-ui/src/components/chat/ChatView.tsx

@@ -8,7 +8,7 @@ import { LRUCache } from "lru-cache"
 import { useDebounceEffect } from "@src/utils/useDebounceEffect"
 import { appendImages } from "@src/utils/imageUtils"
 import { getCostBreakdownIfNeeded } from "@src/utils/costFormatting"
-import { batchConsecutive } from "@src/utils/batchConsecutive"
+import { batchNearby } from "@src/utils/batchNearby"
 
 import type { ClineAsk, ClineSayTool, ClineMessage, ExtensionMessage, AudioType, SuggestionItem } from "@roo-code/types"
 import { getCompletionCheckpoint, getSuggestionMode, isRetiredProvider } from "@roo-code/types"
@@ -1268,10 +1268,64 @@ const ChatViewComponent: React.ForwardRefRenderFunction<ChatViewRef, ChatViewPro
 			}
 		}
 
-		// Consolidate consecutive ask messages into batches
-		const readFileBatched = batchConsecutive(filtered, isReadFileAsk, synthesizeReadFileBatch)
-		const listFilesBatched = batchConsecutive(readFileBatched, isListFilesAsk, synthesizeListFilesBatch)
-		const result = batchConsecutive(listFilesBatched, isEditFileAsk, synthesizeEditFileBatch)
+		// Messages that can be safely skipped over when batching tool asks.
+		// These are low-information or invisible messages that don't affect semantics:
+		// - api_req_started / api_req_finished (API request metadata rows)
+		// - empty text rows (partial streaming with no visible content)
+		// - reasoning rows (hidden from user by default)
+		const isIgnorableBetweenTargets = (msg: ClineMessage): boolean => {
+			if (msg.type !== "say") return false
+			return (
+				msg.say === "api_req_started" ||
+				msg.say === "api_req_finished" ||
+				(msg.say === "text" && !msg.text?.trim()) ||
+				msg.say === "reasoning"
+			)
+		}
+
+		// Semantic boundaries that stop batching. When we hit one of these,
+		// any current batch is finalized and the boundary message is preserved as-is:
+		// - user feedback / new user messages
+		// - visible assistant text (the model spoke to the user)
+		// - completion result (turn ended)
+		// - checkpoint saved
+		// - errors
+		const isBoundary = (msg: ClineMessage): boolean => {
+			if (msg.type !== "say") return false
+			return (
+				msg.say === "user_feedback" ||
+				msg.say === "user_feedback_diff" ||
+				(msg.say === "text" && !!msg.text?.trim()) ||
+				msg.say === "completion_result" ||
+				msg.say === "checkpoint_saved" ||
+				msg.say === "error" ||
+				msg.say === "condense_context" ||
+				msg.say === "codebase_search_result"
+			)
+		}
+
+		// Consolidate tool asks into batches, allowing ignorable messages between targets.
+		// Unlike batchConsecutive which only merges truly adjacent items, batchNearby
+		// skips over api_req_started/finished, empty text rows, and reasoning rows that
+		// models like qwen insert between tool calls during streaming.
+		const readFileBatched = batchNearby(filtered, {
+			isTarget: isReadFileAsk,
+			isIgnorableBetweenTargets,
+			isBoundary,
+			synthesize: synthesizeReadFileBatch,
+		})
+		const listFilesBatched = batchNearby(readFileBatched, {
+			isTarget: isListFilesAsk,
+			isIgnorableBetweenTargets,
+			isBoundary,
+			synthesize: synthesizeListFilesBatch,
+		})
+		const result = batchNearby(listFilesBatched, {
+			isTarget: isEditFileAsk,
+			isIgnorableBetweenTargets,
+			isBoundary,
+			synthesize: synthesizeEditFileBatch,
+		})
 
 		if (isCondensing) {
 			result.push({