fix: initialize xterm.js before connecting WebSocket

Critical fix for completely broken terminal (blinking cursor, no input).

Root Cause:
The WebSocket was being connected before xterm.js was initialized,
causing the WebSocket reference to be lost because this.terminals
map didn't have the entry yet.

Broken Flow:
1. createTerminalUI() - Creates DOM elements only
2. connectTerminal() - Tries to store ws in terminal, but terminal = null
3. WebSocket reference lost immediately
4. No input/output possible

Fixed Flow:
1. createTerminalUI() - Creates DOM elements
2. initializeXTerm() - Creates xterm.js instance AND stores in map
3. connectTerminal() - Now finds terminal in map, stores ws successfully
4. switchToTerminal() - Terminal works!

Changes:
- Add explicit initializeXTerm() call before connectTerminal()
- Add error checking in connectTerminal() to verify terminal exists
- Add comments enforcing ordering requirements

Resolves: "All I see is blinging | and nothing else, no claude cli,
no commands, i cant type in anything. terminal is not woring."

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

public/claude-ide/terminal.js

@@ -213,7 +213,11 @@ class TerminalManager {
       // Create terminal UI
       await this.createTerminalUI(terminalId, selectedDir, mode);
 
-      // Connect WebSocket
+      // Initialize xterm.js FIRST (before connecting WebSocket)
+      // This ensures this.terminals map has the entry ready
+      await this.initializeXTerm(terminalId);
+
+      // NOW connect WebSocket (terminal entry exists in map)
       await this.connectTerminal(terminalId);
 
       // Switch to new terminal
@@ -773,6 +777,19 @@ class TerminalManager {
 
         ws.onopen = () => {
           console.log(`[TerminalManager] Connected to terminal ${terminalId}`);
+
+          // Store WebSocket in terminal entry
+          // NOTE: This assumes initializeXTerm() has already been called
+          // and this.terminals has the entry
+          const terminal = this.terminals.get(terminalId);
+          if (terminal) {
+            terminal.ws = ws;
+          } else {
+            console.error(`[TerminalManager] CRITICAL: Terminal ${terminalId} not found in map! WebSocket connection will be lost.`);
+            reject(new Error(`Terminal ${terminalId} not initialized`));
+            return;
+          }
+
           resolve();
         };
 
@@ -789,12 +806,6 @@ class TerminalManager {
         ws.onclose = () => {
           console.log(`[TerminalManager] WebSocket closed for terminal ${terminalId}`);
         };
-
-        // Store WebSocket
-        const terminal = this.terminals.get(terminalId);
-        if (terminal) {
-          terminal.ws = ws;
-        }
       } catch (error) {
         console.error('[TerminalManager] Error connecting WebSocket:', error);
         reject(error);
@@ -908,11 +919,12 @@ class TerminalManager {
       this.sendTerminalResize(terminalId, cols, rows);
     });
 
-    // Store terminal instance
+    // Store terminal instance in map
+    // This MUST happen before connectTerminal() is called
     this.terminals.set(terminalId, {
       terminal,
       fitAddon,
-      ws: null,
+      ws: null,  // Will be set by connectTerminal()
       container,
       mode: 'mixed'
     });