feat(CC-061): add DocumentsController (GET /documents with classification/ocrStatus filters)

src/documents/documents.controller.ts

@@ -0,0 +1,31 @@
+import { Controller, Get, Query } from '@nestjs/common';
+import { and, desc, eq, isNull } from 'drizzle-orm';
+import { CurrentSession } from '../auth/session.decorator';
+import type { AuthenticatedSession } from '../auth/tenant.guard';
+import { db } from '../db/client';
+import { documents } from '../db/schema';
+
+@Controller('documents')
+export class DocumentsController {
+  @Get()
+  async list(
+    @CurrentSession() session: AuthenticatedSession,
+    @Query('classification') classification?: string,
+    @Query('ocrStatus') ocrStatus?: string,
+    @Query('limit') limitStr?: string,
+  ) {
+    const limit = Math.min(Math.max(1, parseInt(limitStr ?? '200', 10) || 200), 500);
+    const conditions = [
+      eq(documents.tenantId, session.tenantId),
+      isNull(documents.deletedAt),
+    ];
+    if (classification) conditions.push(eq(documents.classification, classification as 'c0' | 'c1' | 'c2' | 'c3' | 'c4'));
+    if (ocrStatus) conditions.push(eq(documents.ocrStatus, ocrStatus));
+
+    return db.query.documents.findMany({
+      where: and(...conditions),
+      orderBy: desc(documents.createdAt),
+      limit,
+    });
+  }
+}