fix: trim session UX — show title not UUID, show backup path (v0.8.6)

- Fix: trimSession command now reads sessionFilePath from tree item correctly
  (was using resourceUri which doesn't exist on SessionItem)
- Fix: session picker shows human-readable title + short UUID, not raw UUID
- Fix: confirmation modal now shows exact backup file path
- Add: getSessionDisplayTitle() helper reads customTitle or first user message
- Add: UI strings are bilingual (中文 / English)

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": "0.8.5",
+  "version": "0.8.6",
   "publisher": "myoontyee",
   "engines": {
     "vscode": "^1.85.0"

src/extension.ts

@@ -502,51 +502,50 @@ export function activate(context: vscode.ExtensionContext): void {
           vscode.window.showWarningMessage('No Claude Code sessions found for the current workspace.');
           return;
         }
+
+        // Pick from current workspace sessions sorted by size
         const trimJsonls = fs.readdirSync(claudeProjectDir)
           .filter((f) => f.endsWith('.jsonl'))
           .map((f) => path.join(claudeProjectDir, f));
 
         if (trimJsonls.length === 0) {
-          vscode.window.showInformationMessage('No sessions found.');
+          vscode.window.showInformationMessage('未找到会话文件 / No sessions found.');
           return;
         }
 
-        // Sort by size descending, let user pick
         const sizedFiles = trimJsonls
           .map((f) => ({ f, sizeMb: fs.statSync(f).size / 1024 / 1024 }))
           .sort((a, b) => b.sizeMb - a.sizeMb);
 
         const picks = sizedFiles.map(({ f, sizeMb }) => ({
-          label: `$(file)  ${path.basename(f, '.jsonl')}`,
-          description: `${sizeMb.toFixed(1)} MB`,
+          label: `$(file)  ${getSessionDisplayTitle(f)}`,
+          description: `${sizeMb.toFixed(1)} MB  [${path.basename(f, '.jsonl').slice(0, 8)}]`,
           value: f,
           large: sizeMb > 10,
         }));
 
         const picked = await vscode.window.showQuickPick(picks, {
-          placeHolder: 'Select session to trim (original will be backed up)',
-          title: 'Trim Large Session',
+          placeHolder: '选择要裁剪的会话（原文件将自动备份）/ Select session to trim (original will be backed up)',
+          title: '裁剪大型会话 / Trim Large Session',
         });
         if (!picked) return;
 
         const keepInput = await vscode.window.showInputBox({
-          prompt: 'How many recent messages to keep? (each user/assistant turn counts as 1)',
+          prompt: '保留最近多少条消息？每条用户/助手发言计为1条 / How many recent messages to keep? (each user/assistant turn counts as 1)',
           value: '400',
-          validateInput: (v) => (isNaN(Number(v)) || Number(v) < 10) ? 'Enter a number ≥ 10' : undefined,
+          validateInput: (v) => (isNaN(Number(v)) || Number(v) < 10) ? '请输入 ≥ 10 的数字 / Enter a number ≥ 10' : undefined,
         });
         if (!keepInput) return;
 
         try {
           const r = trimSession(picked.value, Number(keepInput));
           vscode.window.showInformationMessage(
-            `✓ Trimmed session from ${r.originalLines} → ${r.keptLines} lines  ` +
-            `(${r.sizeMb.toFixed(1)} MB → ${r.trimmedSizeMb.toFixed(1)} MB).\n\n` +
-            `Original backed up to ${path.basename(picked.value)}.bak-*\n\n` +
-            `Close and reopen your CC chat to reload the trimmed session.`,
+            `✓ 裁剪完成 / Trimmed: ${r.originalLines} → ${r.keptLines} 行  (${r.sizeMb.toFixed(1)} MB → ${r.trimmedSizeMb.toFixed(1)} MB)\n\n` +
+            `备份位置 / Backup: ${r.backupPath}\n\n关闭并重新打开 CC 对话面板以生效 / Close and reopen CC chat to reload.`,
             { modal: true }
           );
         } catch (err) {
-          vscode.window.showErrorMessage(`Trim failed: ${err}`);
+          vscode.window.showErrorMessage(`裁剪失败 / Trim failed: ${err}`);
         }
         return;
       }
@@ -574,49 +573,50 @@ export function activate(context: vscode.ExtensionContext): void {
     vscode.commands.registerCommand('claudeCodeExporter.trimSession', async (item?: SessionItem) => {
       let jsonlPath: string | undefined;
 
-      if (item?.resourceUri?.fsPath?.endsWith('.jsonl')) {
-        jsonlPath = item.resourceUri.fsPath;
+      // If invoked from a tree item, use its path directly — no picker needed
+      if (item?.sessionFilePath?.endsWith('.jsonl')) {
+        jsonlPath = item.sessionFilePath;
       } else if (claudeProjectDir) {
-        // Pick from current workspace sessions sorted by size
+        // Invoked from command palette: let user pick
         const jsonls = fs.readdirSync(claudeProjectDir)
           .filter((f) => f.endsWith('.jsonl'))
           .map((f) => ({ f: path.join(claudeProjectDir, f), sizeMb: fs.statSync(path.join(claudeProjectDir, f)).size / 1024 / 1024 }))
           .sort((a, b) => b.sizeMb - a.sizeMb);
 
         const picked = await vscode.window.showQuickPick(
           jsonls.map(({ f, sizeMb }) => ({
-            label: `$(file)  ${path.basename(f, '.jsonl')}`,
-            description: `${sizeMb.toFixed(1)} MB`,
+            label: `$(file)  ${getSessionDisplayTitle(f)}`,
+            description: `${sizeMb.toFixed(1)} MB  [${path.basename(f, '.jsonl').slice(0, 8)}]`,
             value: f,
           })),
-          { placeHolder: 'Select session to trim', title: 'Trim Large Session' }
+          { placeHolder: '选择要裁剪的会话 / Select session to trim', title: '裁剪大型会话 / Trim Large Session' }
         );
         if (!picked) return;
         jsonlPath = picked.value;
       }
 
       if (!jsonlPath) {
-        vscode.window.showWarningMessage('No session selected.');
+        vscode.window.showWarningMessage('未选择会话 / No session selected.');
         return;
       }
 
       const sizeMb = fs.statSync(jsonlPath).size / 1024 / 1024;
       const keepInput = await vscode.window.showInputBox({
-        prompt: `Session is ${sizeMb.toFixed(1)} MB. How many recent messages to keep?`,
+        prompt: `当前会话 ${sizeMb.toFixed(1)} MB，保留最近多少条消息？ / Session is ${sizeMb.toFixed(1)} MB — how many recent messages to keep?`,
         value: '400',
-        validateInput: (v) => (isNaN(Number(v)) || Number(v) < 10) ? 'Enter a number ≥ 10' : undefined,
+        validateInput: (v) => (isNaN(Number(v)) || Number(v) < 10) ? '请输入 ≥ 10 的数字 / Enter a number ≥ 10' : undefined,
       });
       if (!keepInput) return;
 
       try {
         const r = trimSession(jsonlPath, Number(keepInput));
         vscode.window.showInformationMessage(
-          `✓ Trimmed: ${r.originalLines} → ${r.keptLines} lines  (${r.sizeMb.toFixed(1)} MB → ${r.trimmedSizeMb.toFixed(1)} MB).\n\n` +
-          `Original backed up. Close and reopen your CC chat to reload.`,
+          `✓ 裁剪完成 / Trimmed: ${r.originalLines} → ${r.keptLines} 行 / lines  (${r.sizeMb.toFixed(1)} MB → ${r.trimmedSizeMb.toFixed(1)} MB)\n\n` +
+          `备份位置 / Backup: ${r.backupPath}\n\n关闭并重新打开 CC 对话面板以生效 / Close and reopen CC chat panel to reload.`,
           { modal: true }
         );
       } catch (err) {
-        vscode.window.showErrorMessage(`Trim failed: ${err}`);
+        vscode.window.showErrorMessage(`裁剪失败 / Trim failed: ${err}`);
       }
     }),
 
@@ -1304,10 +1304,37 @@ function repairThinkingSignatures(jsonlPath: string): number {
 // Backs up original to .jsonl.bak-TIMESTAMP, then overwrites in-place so the
 // session ID and CC entry point are unchanged.
 // Returns { keptLines, originalLines, sizeMb, trimmedSizeMb }
+
+function getSessionDisplayTitle(jsonlPath: string): string {
+  try {
+    const content = fs.readFileSync(jsonlPath, 'utf8');
+    const lines = content.split('\n').filter((l) => l.trim());
+    for (const line of lines) {
+      try {
+        const obj = JSON.parse(line) as Record<string, unknown>;
+        if (obj.customTitle && typeof obj.customTitle === 'string') return obj.customTitle;
+        const msg = obj.message as Record<string, unknown> | undefined;
+        if (msg?.role === 'user') {
+          const blocks = msg.content;
+          if (Array.isArray(blocks)) {
+            for (const b of blocks) {
+              if ((b as Record<string, unknown>).type === 'text') {
+                const t = ((b as Record<string, unknown>).text as string || '').trim();
+                if (t) return t.slice(0, 50);
+              }
+            }
+          }
+          if (typeof blocks === 'string' && blocks.trim()) return blocks.trim().slice(0, 50);
+        }
+      } catch { /* skip bad line */ }
+    }
+  } catch { /* unreadable */ }
+  return path.basename(jsonlPath, '.jsonl').slice(0, 8);
+}
 function trimSession(
   jsonlPath: string,
   keepRecentMessages: number = 400
-): { keptLines: number; originalLines: number; sizeMb: number; trimmedSizeMb: number } {
+): { keptLines: number; originalLines: number; sizeMb: number; trimmedSizeMb: number; backupPath: string } {
   const raw = fs.readFileSync(jsonlPath, 'utf8');
   const lines = raw.split('\n');
   const originalLines = lines.filter((l) => l.trim()).length;
@@ -1359,6 +1386,6 @@ function trimSession(
   fs.writeFileSync(jsonlPath, outLines.join('\n') + '\n', 'utf8');
   const trimmedSizeMb = fs.statSync(jsonlPath).size / 1024 / 1024;
 
-  return { keptLines: outLines.length, originalLines, sizeMb, trimmedSizeMb };
+  return { keptLines: outLines.length, originalLines, sizeMb, trimmedSizeMb, backupPath };
 }