diff --git a/packages/coding-agent/CHANGELOG.md b/packages/coding-agent/CHANGELOG.md
index f0de8b8c1..c6ae6a567 100644
--- a/packages/coding-agent/CHANGELOG.md
+++ b/packages/coding-agent/CHANGELOG.md
@@ -1,6 +1,9 @@
 # Changelog
 
 ## [Unreleased]
+### Changed
+
+- Changed default value of `tools.intentTracing` setting from false to true
 
 ## [12.14.1] - 2026-02-19
 
@@ -4854,4 +4857,4 @@ Initial public release.
 - Git branch display in footer
 - Message queueing during streaming responses
 - OAuth integration for Gmail and Google Calendar access
-- HTML export with syntax highlighting and collapsible sections
+- HTML export with syntax highlighting and collapsible sections
\ No newline at end of file
diff --git a/packages/coding-agent/src/config/settings-schema.ts b/packages/coding-agent/src/config/settings-schema.ts
index 8c1b00441..301077c97 100644
--- a/packages/coding-agent/src/config/settings-schema.ts
+++ b/packages/coding-agent/src/config/settings-schema.ts
@@ -504,7 +504,7 @@ export const SETTINGS_SCHEMA = {
 	},
 	"tools.intentTracing": {
 		type: "boolean",
-		default: false,
+		default: true,
 		ui: {
 			tab: "tools",
 			label: "Intent tracing",
diff --git a/packages/coding-agent/src/patch/hashline.ts b/packages/coding-agent/src/patch/hashline.ts
index e17631df3..65cf5e34b 100644
--- a/packages/coding-agent/src/patch/hashline.ts
+++ b/packages/coding-agent/src/patch/hashline.ts
@@ -664,9 +664,7 @@ export function applyHashlineEdits(
 					throw new Error('Insert-between edit (src "A#HH.. B#HH..") requires non-empty dst');
 				}
 				if (edit.before.line <= edit.after.line) {
-					throw new Error(
-						`insert requires after (${edit.after.line}) < before (${edit.before.line})`,
-					);
+					throw new Error(`insert requires after (${edit.after.line}) < before (${edit.before.line})`);
 				}
 				const afterValid = validateRef(edit.after);
 				const beforeValid = validateRef(edit.before);