feat: add "Repair & Clone as New Session" option to Repair menu

Adds a third option to the Repair Session command that combines repair
with inject functionality. This creates a clean copy of the current
session with a new UUID while automatically stripping thinking-block
signatures.

Safer than in-place repair for API providers with strict signature
requirements, as it preserves the original session and creates a fresh
resumable clone.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Myoontyee

package.json

@@ -2,7 +2,7 @@
   "name": "claude-code-exporter",
   "displayName": "Claude Code Exporter — Claude Code, Codex & Cursor Conversation History",
   "description": "Export AI coding agent conversations to Markdown. Supports Claude Code (→ .claude-code-history/), OpenAI Codex (→ .codex-history/), and Cursor Composer (→ .cursor-history/). Features: auto-watch, session inject/import for claude --resume, and repair of thinking-block signature errors when switching API providers.",
-  "version": "0.6.5",
+  "version": "0.6.6",
   "publisher": "myoontyee",
   "engines": {
     "vscode": "^1.85.0"

src/extension.ts

@@ -411,6 +411,11 @@ export function activate(context: vscode.ExtensionContext): void {
           description: 'Fix all sessions — useful after bulk API switch',
           value: 'all',
         },
+        {
+          label: '$(add)  Repair & Clone as New Session',
+          description: 'Create a clean copy with new UUID — safe for strict API providers',
+          value: 'clone',
+        },
       ], { placeHolder: 'Repair thinking-block signatures (fixes 400 errors after provider switch)' });
 
       if (!choice) return;
@@ -424,6 +429,24 @@ export function activate(context: vscode.ExtensionContext): void {
         return;
       }
 
+      // ── Clone mode: inject current session as new UUID ──────────────────────
+      if (choice.value === 'clone') {
+        const mostRecent = jsonls.sort((a, b) => fs.statSync(b).mtimeMs - fs.statSync(a).mtimeMs)[0];
+        try {
+          const result = injectSession(mostRecent, claudeProjectDir);
+          vscode.window.showInformationMessage(
+            `✓ Cloned session with new UUID: ${result.sessionId}\n\n` +
+            `Resume with: claude --resume ${result.sessionId}\n\n` +
+            `All thinking signatures have been stripped automatically.`,
+            { modal: true }
+          );
+        } catch (err) {
+          vscode.window.showErrorMessage(`Clone failed: ${err}`);
+        }
+        return;
+      }
+
+      // ── In-place repair mode ────────────────────────────────────────────────
       const targets = choice.value === 'current'
         ? [jsonls.sort((a, b) => fs.statSync(b).mtimeMs - fs.statSync(a).mtimeMs)[0]]
         : jsonls;