From 130f01a19fac88fd1b684c6744994a62e81e340d Mon Sep 17 00:00:00 2001
From: Jared Miller <jared@smell.flowers>
Date: Sat, 31 Jan 2026 09:53:22 -0500
Subject: [PATCH] Clean up deprecated ANSI processing code (Phase 4)

Removed the ansiCarryovers Map from server.ts since terminal emulation
now handles all ANSI sequence buffering internally. Marked ansi.ts and
ansi-carryover.ts as deprecated with JSDoc comments, but kept them for
backward compatibility and potential rollback.
---
 src/ansi-carryover.ts | 6 ++++++
 src/ansi.ts           | 6 ++++++
 src/server.ts         | 3 ---
 3 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/ansi-carryover.ts b/src/ansi-carryover.ts
index 461a93c..b2651cf 100644
--- a/src/ansi-carryover.ts
+++ b/src/ansi-carryover.ts
@@ -1,3 +1,9 @@
+/**
+ * @deprecated This module is deprecated. Terminal output is now handled by
+ * the headless terminal emulator in terminal.ts. Kept for backward compatibility.
+ * See docs/terminal-emulation.md for details.
+ */
+
 /**
  * Detect and split any incomplete ANSI control sequence at the end of a chunk.
  *
diff --git a/src/ansi.ts b/src/ansi.ts
index 58e6d5c..a33c673 100644
--- a/src/ansi.ts
+++ b/src/ansi.ts
@@ -1,3 +1,9 @@
+/**
+ * @deprecated This module is deprecated. Terminal output is now handled by
+ * the headless terminal emulator in terminal.ts. Kept for backward compatibility.
+ * See docs/terminal-emulation.md for details.
+ */
+
 // ANSI to HTML converter - processes escape sequences and renders as inline styled spans
 
 const colors: Record<number, string> = {
diff --git a/src/server.ts b/src/server.ts
index 7fd0fc1..9c38fad 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -35,8 +35,6 @@ import type {
 const sseClients = new Set<ReadableStreamDefaultController<string>>();
 const sessionWebSockets = new Map<number, ServerWebSocket<SessionData>>();
 const sessionStates = new Map<number, SessionState>();
-// Buffer for incomplete ANSI sequences per session to avoid leaking partial control codes
-const ansiCarryovers = new Map<number, string>();
 const sessionTerminals = new Map<number, TerminalSession>();
 
 interface SessionData {
@@ -686,7 +684,6 @@ const server = Bun.serve<SessionData>({
     close(ws) {
       if (ws.data.sessionId) {
         sessionWebSockets.delete(ws.data.sessionId);
-        ansiCarryovers.delete(ws.data.sessionId);
 
         // Dispose terminal emulator
         const termSession = sessionTerminals.get(ws.data.sessionId);