fix(investments): align roles and date contracts

Identify income dependencies by role and document screen-specific dates.
Convert inclusive calendar days into half-open source ranges while
preserving operation timestamps and existing stored coverage.

test/tbank-screen-sync.e2e-spec.ts

@@ -122,6 +122,25 @@ describe('screen sync HTTP and SQLite', () => {
       from: '2026-02-31',
       to: '2026-03-01',
     },
+    ...(['income', 'events'] as const).flatMap((screen) => [
+      { screen, accountId: 'all', from: '2025-02-29', to: '2025-03-01' },
+      { screen, accountId: 'all', from: '2024-03-01', to: '2024-02-29' },
+      {
+        screen,
+        accountId: 'all',
+        from: '2024-02-29T00:00:00Z',
+        to: '2024-02-29',
+      },
+      {
+        screen,
+        accountId: 'all',
+        from: '2024-02-29',
+        to: '2024-02-29T23:59:59Z',
+      },
+    ]),
+    { screen: 'income', accountId: 'all', from: '2024-02-29' },
+    { screen: 'income', accountId: 'all', to: '2024-02-29' },
+    { screen: 'events', accountId: 'all', to: '2000-01-01' },
     {
       screen: 'stock',
       instrumentUid: '00000000-0000-4000-8000-000000000001',
@@ -145,6 +164,38 @@ describe('screen sync HTTP and SQLite', () => {
     expect(await prisma.tbankSyncWork.count()).toBe(0);
     expect(upstream.getOpenAccounts).not.toHaveBeenCalled();
   });
+  it.each([
+    {
+      screen: 'income',
+      accountId: 'all',
+      from: '2024-02-29',
+      to: '2024-02-29',
+    },
+    {
+      screen: 'events',
+      accountId: 'all',
+      from: '2096-02-29',
+      to: '2096-02-29',
+    },
+    { screen: 'events', accountId: 'all', from: '2096-02-29' },
+    { screen: 'events', accountId: 'all', to: '2096-02-29' },
+    {
+      screen: 'operations',
+      accountId: 'all',
+      from: '2024-02-29T00:00:00Z',
+      to: '2024-03-01T00:00:00Z',
+    },
+  ])(
+    'preserves valid calendar/instant scope in accepted and status responses: %j',
+    async (scope) => {
+      const response = await post(scope).expect(202);
+      const accepted = response.body as { id: string; scope: object };
+      expect(accepted.scope).toEqual(scope);
+      const result = await settled(accepted.id);
+      expect(result.scope).toEqual(scope);
+      expect(result.state).toBe('succeeded');
+    },
+  );
   it('keeps failed work terminal, cancels abandoned work without restart, and hides old connection handles', async () => {
     upstream.getOpenAccounts.mockRejectedValue(
       new Error('upstream details never exposed'),