fix: don't show EPIPE error

cli/CHANGELOG.md

@@ -12,6 +12,7 @@ _Released 10/20/2025 (PENDING)_
 - Fixed an issue where grouped command text jumps up and down when expanding and collapsing in the command log. Addressed in [#32757](https://github.com/cypress-io/cypress/pull/32757).
 - Fixed an issue where command snapshots were not correctly displayed in Studio. Addressed in [#32808](https://github.com/cypress-io/cypress/pull/32808).
 - Fixed an issue with grouped console prop items having a hard to read blue color in the console log and duplicate `:` characters being displayed. Addressed in [#32776](https://github.com/cypress-io/cypress/pull/32776).
+- Fixed an issue where a EPIPE error shows up after CTRL+C is done in terminal. Fixes [#30659](https://github.com/cypress-io/cypress/issues/30659). Addressed in [#32821](https://github.com/cypress-io/cypress/pull/32821).
 - Added more context to the error message shown when `cy.prompt()` fails to download. Addressed in [#32822](https://github.com/cypress-io/cypress/pull/32822).
 
 **Misc:**

packages/data-context/src/data/ProjectConfigIpc.ts

@@ -157,7 +157,11 @@ export class ProjectConfigIpc extends EventEmitter {
 
       let resolved = false
 
-      this._childProcess.on('error', (err) => {
+      this._childProcess.on('error', (err: NodeJS.ErrnoException) => {
+        if (err.code === 'EPIPE') {
+          return
+        }
+
         debug('unhandled error in child process %s', err)
         this.handleChildProcessError(err, this, resolved, reject)
         reject(err)
@@ -229,7 +233,11 @@ export class ProjectConfigIpc extends EventEmitter {
     return new Promise((resolve, reject) => {
       let resolved = false
 
-      this._childProcess.on('error', (err) => {
+      this._childProcess.on('error', (err: NodeJS.ErrnoException) => {
+        if (err.code === 'EPIPE') {
+          return
+        }
+
         this.handleChildProcessError(err, this, resolved, reject)
         reject(err)
       })