feat(session): add optional end-of-session summarization

src/config/schema.test.ts

@@ -244,6 +244,52 @@ describe('configSchema — backup', () => {
   });
 });
 
+describe('configSchema — sessions', () => {
+  const minimalConfig = {
+    telegram: { bot_token: 'test', allowed_chat_ids: [1] },
+    models: { default: { provider: 'anthropic', model: 'claude-3' } },
+  };
+
+  it('defaults end_summary settings', () => {
+    const result = configSchema.parse(minimalConfig);
+    expect(result.sessions.ttl).toBe('30d');
+    expect(result.sessions.end_summary.enabled).toBe(false);
+    expect(result.sessions.end_summary.tier).toBe('fast');
+    expect(result.sessions.end_summary.max_messages).toBe(50);
+    expect(result.sessions.end_summary.max_input_chars).toBe(20000);
+    expect(result.sessions.end_summary.max_tokens).toBe(512);
+    expect(result.sessions.end_summary.write_to_memory).toBe(true);
+    expect(result.sessions.end_summary.memory_namespace).toBe('session/summaries');
+  });
+
+  it('accepts custom end_summary settings', () => {
+    const result = configSchema.parse({
+      ...minimalConfig,
+      sessions: {
+        ttl: '7d',
+        end_summary: {
+          enabled: true,
+          tier: 'complex',
+          max_messages: 100,
+          max_input_chars: 50000,
+          max_tokens: 1024,
+          write_to_memory: false,
+          memory_namespace: 'notes/session',
+        },
+      },
+    });
+
+    expect(result.sessions.ttl).toBe('7d');
+    expect(result.sessions.end_summary.enabled).toBe(true);
+    expect(result.sessions.end_summary.tier).toBe('complex');
+    expect(result.sessions.end_summary.max_messages).toBe(100);
+    expect(result.sessions.end_summary.max_input_chars).toBe(50000);
+    expect(result.sessions.end_summary.max_tokens).toBe(1024);
+    expect(result.sessions.end_summary.write_to_memory).toBe(false);
+    expect(result.sessions.end_summary.memory_namespace).toBe('notes/session');
+  });
+});
+
 describe('configSchema — agent_configs', () => {
   const minimalConfig = {
     telegram: { bot_token: 'test', allowed_chat_ids: [1] },

src/config/schema.ts

@@ -670,6 +670,15 @@ const promptSchema = z.object({
 
 const sessionsSchema = z.object({
   ttl: z.string().default('30d'),
+  end_summary: z.object({
+    enabled: z.boolean().default(false),
+    tier: modelTierEnum.default('fast'),
+    max_messages: z.number().min(2).max(500).default(50),
+    max_input_chars: z.number().min(500).max(200000).default(20000),
+    max_tokens: z.number().min(64).max(4096).default(512),
+    write_to_memory: z.boolean().default(true),
+    memory_namespace: z.string().default('session/summaries'),
+  }).default({}),
 }).default({});
 
 const backupSchema = z.object({