ENG-501/Detection of command termination using Ctrl+C (RooCodeInc#2960)

* Detect Ctrl C input when users terminal a long running terminal command

* Remove terminal-output-truncation.md documentation file

Author: canvrno

.changeset/bright-apples-protect.md

@@ -0,0 +1,5 @@
+---
+"claude-dev": patch
+---
+
+Detect Ctrl+C termination of terminal activity on long running commands

src/integrations/terminal/TerminalProcess.ts

@@ -94,6 +94,15 @@ export class TerminalProcess extends EventEmitter<TerminalProcessEvents> {
 					data = stripAnsi(data)
 				}
 
+				// Ctrl+C detection: if user presses Ctrl+C, treat as command terminated
+				if (data.includes("^C") || data.includes("\u0003")) {
+					if (this.hotTimer) {
+						clearTimeout(this.hotTimer)
+					}
+					this.isHot = false
+					break
+				}
+
 				// first few chunks could be the command being echoed back, so we must ignore
 				// note this means that 'echo' commands won't work
 				if (!didOutputNonCommand) {