Add recent outreach rejections stream

tests/web/outreach-route.test.ts

@@ -35,6 +35,14 @@ describe('outreach route', () => {
         rejectionReasons: [{ reason: 'Seller signals detected', count: 1 }],
       })),
       getOldestActiveAt: vi.fn(() => 1_000),
+      listRecentRejected: vi.fn(() => [{
+        postId: 'rejected-1', subreddit: 'example', author: 'bob', sourceType: 'chat',
+        post: {
+          id: 'rejected-1', subreddit: 'example', author: 'bob', title: 'A rejected post',
+          permalink: '/r/example/comments/rejected-1/', selftext: 'Scanned post content',
+        },
+        updatedAt: 3_000, lastError: 'Seller signals detected',
+      }]),
       listActive: vi.fn(() => [{
         postId: 'post-1', subreddit: 'example', author: 'alice', sourceType: 'image',
         post: {
@@ -89,6 +97,11 @@ describe('outreach route', () => {
       stages: { discovered: 2, screening: 1, ready: 1, sending: 1, retryable: 1 },
       outcomes: { sent: 2, rejected: 1 },
       rejectionReasons: [{ reason: 'Seller signals detected', count: 1 }],
+      recentRejections: [{
+        postId: 'rejected-1', subreddit: 'example', author: 'bob', title: 'A rejected post',
+        postUrl: 'https://www.reddit.com/r/example/comments/rejected-1/', sourceType: 'chat',
+        sourceContent: 'Scanned post content', rejectedAt: 3_000, reason: 'Seller signals detected',
+      }],
       candidates: [{
         postId: 'post-1', status: 'sending', hasPreparedMessage: true,
         postUrl: 'https://www.reddit.com/r/example/comments/post-1/hello/',