From 3092038e407dd246ace605b822f4e92aaea58a42 Mon Sep 17 00:00:00 2001
From: Fusion <noreply@runfusion.ai>
Date: Sun, 24 May 2026 19:44:21 +0200
Subject: [PATCH] debug: add console logging for terminal resize debugging

---
 apps/api/src/services/terminal_session.py | 13 +++++++++++
 apps/web/src/components/terminal.tsx      | 27 +++++++++++++----------
 2 files changed, 28 insertions(+), 12 deletions(-)

diff --git a/apps/api/src/services/terminal_session.py b/apps/api/src/services/terminal_session.py
index b87110f..4302a25 100644
--- a/apps/api/src/services/terminal_session.py
+++ b/apps/api/src/services/terminal_session.py
@@ -164,6 +164,19 @@ class TerminalSession:
         ).encode()
         await self.write_input(stty_cmd)
         logger.debug(f"Sent stty resize to container for session {self.session_id}: {cols}x{rows}")
+        
+        # Docker exec doesn't forward PTY resize to the container process,
+        # so we need to explicitly set the size inside the container shell.
+        # Send on every resize so the container shell always matches the frontend.
+        # Use ANSI escape sequences to hide the command from view:
+        # - \x1b[?25l: hide cursor
+        # - \x1b[A\x1b[2K: move up and clear line
+        # - \x1b[?25h: show cursor
+        stty_cmd = (
+            f"\x1b[?25lstty cols {cols} rows {rows}\n\x1b[A\x1b[2K\x1b[?25h"
+        ).encode()
+        await self.write_input(stty_cmd)
+        logger.debug(f"Sent stty resize to container for session {self.session_id}: {cols}x{rows}")
 
     async def reset(self) -> None:
         """Reset the session by killing the process and clearing state."""
diff --git a/apps/web/src/components/terminal.tsx b/apps/web/src/components/terminal.tsx
index e126688..6e13cad 100644
--- a/apps/web/src/components/terminal.tsx
+++ b/apps/web/src/components/terminal.tsx
@@ -216,26 +216,29 @@ export const TerminalComponent: React.FC<TerminalProps> = ({
 
     // Fit terminal and notify backend
     const fitTerminal = () => {
-      if (!fitAddonRef.current || !termRef.current) return;
+      if (!fitAddonRef.current || !termRef.current) {
+        console.log('[Terminal] fitTerminal: refs not ready');
+        return;
+      }
       const oldCols = termRef.current.cols;
       const oldRows = termRef.current.rows;
       
-      // Force layout recalculation before fit
-      if (container) {
-        void container.offsetWidth;
-        void container.offsetHeight;
-      }
+      console.log('[Terminal] fitTerminal called, container dims:', container?.offsetWidth, container?.offsetHeight);
       
       fitAddonRef.current.fit();
       const { cols, rows } = termRef.current;
-      if (cols !== oldCols || rows !== oldRows) {
-        // Delay refresh to next frame so renderer can process resize first
-        requestAnimationFrame(() => {
-          termRef.current?.refresh(0, rows - 1);
-        });
-      }
+      console.log('[Terminal] fitTerminal result:', cols, rows, '(was:', oldCols, oldRows + ')');
+      
+      // Always refresh on initial load or when dimensions change
+      requestAnimationFrame(() => {
+        termRef.current?.refresh(0, rows - 1);
+      });
+      
       if (ws.readyState === WebSocket.OPEN) {
+        console.log('[Terminal] Sending resize:', cols, rows);
         ws.send(JSON.stringify({ type: "resize", cols, rows }));
+      } else {
+        console.log('[Terminal] WebSocket not open, state:', ws.readyState);
       }
     };