fix(coding-agent): Coalesce adjacent assistant thinking blocks into one section

packages/coding-agent/CHANGELOG.md

@@ -34,11 +34,12 @@
 
 ### Fixed
 
-- Fixed configured-provider catalog refresh to parse pi.dev's model-ID keyed responses, treat unimplemented routes as unavailable overlays, and show concise refresh status in `/model`.
+- Fixed configured-provider catalog refresh to parse pi.dev's model-ID keyed responses, throttle checks to once per four hours, send the versioned pi user agent, treat unimplemented routes as unavailable overlays, and show concise refresh status in `/model`.
 - Fixed inherited OpenRouter model context windows to use the top provider's actual context length ([#6481](https://github.com/earendil-works/pi-mono/pull/6481) by [@davidbrai](https://github.com/davidbrai)).
 - Fixed inherited OpenRouter OpenAI-compatible session IDs to use the `x-session-id` header instead of OpenAI-specific session-affinity fields ([#6366](https://github.com/earendil-works/pi/issues/6366)).
 - Fixed `Ctrl+V` to paste clipboard text when the pasteboard does not contain an image.
 - Fixed `/login amazon-bedrock` to prompt for and save a Bedrock API key instead of only displaying ambient AWS credential setup instructions.
+- Fixed adjacent assistant thinking blocks to render as one thinking section.
 
 ## [0.80.6] - 2026-07-09
 

packages/coding-agent/src/modes/interactive/components/assistant-message.ts

@@ -101,7 +101,24 @@ export class AssistantMessageComponent extends Container {
 				// Assistant text messages with no background - trim the text
 				// Set paddingY=0 to avoid extra spacing before tool executions
 				this.contentContainer.addChild(new Markdown(content.text.trim(), this.outputPad, 0, this.markdownTheme));
-			} else if (content.type === "thinking" && content.thinking.trim()) {
+			} else if (content.type === "thinking") {
+				const thinkingBlocks: string[] = [];
+				for (; i < message.content.length; i++) {
+					const thinkingContent = message.content[i];
+					if (thinkingContent.type !== "thinking") {
+						break;
+					}
+					const thinking = thinkingContent.thinking.trim();
+					if (thinking) {
+						thinkingBlocks.push(thinking);
+					}
+				}
+				i--;
+
+				if (thinkingBlocks.length === 0) {
+					continue;
+				}
+
 				// Add spacing only when another visible assistant content block follows.
 				// This avoids a superfluous blank line before separately-rendered tool execution blocks.
 				const hasVisibleContentAfter = message.content
@@ -109,24 +126,21 @@ export class AssistantMessageComponent extends Container {
 					.some((c) => (c.type === "text" && c.text.trim()) || (c.type === "thinking" && c.thinking.trim()));
 
 				if (this.hideThinkingBlock) {
-					// Show static thinking label when hidden
+					// Show one static label for each run of thinking blocks when hidden.
 					this.contentContainer.addChild(
 						new Text(theme.italic(theme.fg("thinkingText", this.hiddenThinkingLabel)), this.outputPad, 0),
 					);
-					if (hasVisibleContentAfter) {
-						this.contentContainer.addChild(new Spacer(1));
-					}
 				} else {
-					// Thinking traces in thinkingText color, italic
+					// Render each run of thinking blocks as one Markdown section.
 					this.contentContainer.addChild(
-						new Markdown(content.thinking.trim(), this.outputPad, 0, this.markdownTheme, {
+						new Markdown(thinkingBlocks.join("\n\n"), this.outputPad, 0, this.markdownTheme, {
 							color: (text: string) => theme.fg("thinkingText", text),
 							italic: true,
 						}),
 					);
-					if (hasVisibleContentAfter) {
+				}
-						this.contentContainer.addChild(new Spacer(1));
+				if (hasVisibleContentAfter) {
-					}
+					this.contentContainer.addChild(new Spacer(1));
 				}
 			}
 		}

packages/coding-agent/test/assistant-message.test.ts

@@ -74,6 +74,24 @@ describe("AssistantMessageComponent", () => {
 		expect(rendered).toContain("response may be incomplete");
 	});
 
+	test("coalesces adjacent thinking blocks into one hidden thinking label", () => {
+		initTheme("dark");
+
+		const component = new AssistantMessageComponent(
+			createAssistantMessage([
+				{ type: "thinking", thinking: "first thought" },
+				{ type: "thinking", thinking: "" },
+				{ type: "thinking", thinking: "second thought" },
+				{ type: "text", text: "answer" },
+			]),
+			true,
+		);
+		const rendered = stripAnsi(component.render(80).join("\n"));
+
+		expect(rendered.match(/Thinking\.\.\./g)).toHaveLength(1);
+		expect(rendered).toContain("answer");
+	});
+
 	test("uses configured output padding for text and thinking", () => {
 		initTheme("dark");