feat: add recovery summary to session history export

src/renderer/export-session.ts

@@ -47,14 +47,41 @@ function handoffSection(cwd: string): string {
   ].join('\n');
 }
 
+function summarySection(entries: Entry[]): string {
+  const users = entries.filter((e) => e.kind === 'user').length;
+  const assistants = entries.filter((e) => e.kind === 'assistant').length;
+  const messages = users + assistants;
+  const tools = entries.filter(
+    (e): e is Extract<Entry, { kind: 'tool' }> => e.kind === 'tool',
+  );
+  const lines = [
+    '## Summary',
+    '',
+    `- ${messages} ${messages === 1 ? 'message' : 'messages'}: ${users} from you, ${assistants} from Pi.`,
+  ];
+  if (tools.length > 0) {
+    const done = tools.filter((e) => !e.running && e.ok).length;
+    const failed = tools.filter((e) => !e.running && !e.ok).length;
+    const running = tools.filter((e) => e.running).length;
+    lines.push(
+      `- ${tools.length} ${tools.length === 1 ? 'tool call' : 'tool calls'}: ${done} done, ${failed} failed, ${running} running.`,
+      `- Tools used: ${[...new Set(tools.map((e) => e.tool))].join(', ')}.`,
+    );
+  }
+  return lines.join('\n');
+}
+
 export function sessionExportMarkdown(input: SessionExportInput): string {
   const parts: string[] = [
     `# ${input.title.trim() || 'Untitled session'}`,
     `Exported from pidex at ${input.exportedAt.toISOString()}.`,
   ];
   if (input.cwd.trim()) parts.push(`It ran in \`${input.cwd.trim()}\`.`);
   if (input.model.trim()) parts.push(`It used \`${input.model.trim()}\`.`);
-  if (input.entries.length > 0) parts.push(handoffSection(input.cwd));
+  if (input.entries.length > 0) {
+    parts.push(summarySection(input.entries));
+    parts.push(handoffSection(input.cwd));
+  }
   if (input.entries.length === 0) {
     parts.push('No messages in this selection.');
     return `${parts.join('\n\n')}\n`;

tests/unit/export-session.test.ts

@@ -48,6 +48,12 @@ describe('sessionExportMarkdown', () => {
         '',
         'It used `anthropic/claude-test`.',
         '',
+        '## Summary',
+        '',
+        '- 2 messages: 1 from you, 1 from Pi.',
+        '- 1 tool call: 1 done, 0 failed, 0 running.',
+        '- Tools used: bash.',
+        '',
         '## Continue elsewhere',
         '',
         'This file is portable context, not a restorable Pi session archive.',
@@ -158,6 +164,28 @@ describe('sessionExportMarkdown', () => {
     expect(markdown).not.toContain('Same folder (`');
   });
 
+  it('summarises tool outcomes and distinct tools in first-use order', () => {
+    const markdown = sessionExportMarkdown({
+      title: 'T',
+      cwd: '',
+      model: '',
+      exportedAt,
+      entries: [
+        { key: 'u1', kind: 'user', text: 'hi' },
+        { ...bashDone, key: 't1' },
+        { ...bashDone, key: 't2', tool: 'read', ok: false, output: 'boom' },
+        { ...bashDone, key: 't3', tool: 'bash', running: true, output: '' },
+      ],
+    });
+    expect(markdown).toContain(
+      '- 1 message: 1 from you, 0 from Pi.',
+    );
+    expect(markdown).toContain(
+      '- 3 tool calls: 1 done, 1 failed, 1 running.',
+    );
+    expect(markdown).toContain('- Tools used: bash, read.');
+  });
+
   it('handles an empty selection and a blank title', () => {
     const markdown = sessionExportMarkdown({
       title: '  ',
@@ -171,6 +199,7 @@ describe('sessionExportMarkdown', () => {
     expect(markdown).not.toContain('It ran in');
     expect(markdown).not.toContain('It used');
     expect(markdown).not.toContain('Continue elsewhere');
+    expect(markdown).not.toContain('## Summary');
   });
 });