From a29cd80acf5842917d005cc1f2c63262085c10bb Mon Sep 17 00:00:00 2001
From: Markus Ylisiurunen <markus.ylisiurunen@gmail.com>
Date: Fri, 5 Dec 2025 09:48:35 +0200
Subject: [PATCH] add ctrl+t shortcut to toggle llm thinking block visibility

---
 packages/coding-agent/CHANGELOG.md            |  4 +++
 packages/coding-agent/README.md               |  1 +
 .../coding-agent/src/tui/assistant-message.ts | 25 +++++++++++--------
 3 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index cbb917f7..5b2d25c5 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## [Unreleased]
 
+### Added
+
+- **Thinking Block Toggle**: Added `Ctrl+T` shortcut to toggle visibility of LLM thinking blocks. When toggled off, shows a static "Thinking..." label instead of full content. Useful for reducing visual clutter during long conversations. ([#113](https://github.com/badlogic/pi-mono/pull/113))
+
 ## [0.12.10] - 2025-12-04
 
 ### Added
diff --git a/packages/coding-agent/README.md b/packages/coding-agent/README.md
index cd12e872..f686a322 100644
--- a/packages/coding-agent/README.md
+++ b/packages/coding-agent/README.md
@@ -684,6 +684,7 @@ Change queue mode with `/queue` command. Setting is saved in `~/.pi/agent/settin
 - **Shift+Tab**: Cycle thinking level (for reasoning-capable models)
 - **Ctrl+P**: Cycle models (use `--models` to scope)
 - **Ctrl+O**: Toggle tool output expansion (collapsed ↔ full output)
+- **Ctrl+T**: Toggle thinking block visibility (shows full content ↔ static "Thinking..." label)
 
 ## Project Context Files
 
diff --git a/packages/coding-agent/src/tui/assistant-message.ts b/packages/coding-agent/src/tui/assistant-message.ts
index 611bbcc0..31e0f80e 100644
--- a/packages/coding-agent/src/tui/assistant-message.ts
+++ b/packages/coding-agent/src/tui/assistant-message.ts
@@ -46,16 +46,21 @@ 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(), 1, 0, getMarkdownTheme()));
-			} else if (content.type === "thinking" && content.thinking.trim() && !this.hideThinkingBlock) {
-				// Thinking traces in muted color, italic
-				// Use Markdown component with default text style for consistent styling
-				this.contentContainer.addChild(
-					new Markdown(content.thinking.trim(), 1, 0, getMarkdownTheme(), {
-						color: (text: string) => theme.fg("muted", text),
-						italic: true,
-					}),
-				);
-				this.contentContainer.addChild(new Spacer(1));
+			} else if (content.type === "thinking" && content.thinking.trim()) {
+				if (this.hideThinkingBlock) {
+					// Show static "Thinking..." label when hidden
+					this.contentContainer.addChild(new Text(theme.fg("muted", "Thinking..."), 1, 0));
+				} else {
+					// Thinking traces in muted color, italic
+					// Use Markdown component with default text style for consistent styling
+					this.contentContainer.addChild(
+						new Markdown(content.thinking.trim(), 1, 0, getMarkdownTheme(), {
+							color: (text: string) => theme.fg("muted", text),
+							italic: true,
+						}),
+					);
+					this.contentContainer.addChild(new Spacer(1));
+				}
 			}
 		}