feat: outreach follow-up scheduling, activity timeline, and pSEO noindex (migration 0025)
Feature A — Outreach follow-up + activity timeline:
- follow_up_at column on suppliers (migration 0025)
- HTMX date picker on outreach rows, POST /admin/outreach/<id>/follow-up
- Amber due-today banner on /admin/outreach with ?follow_up=due filter
- get_follow_up_due_count() for dashboard widget
- Activity timeline on /admin/suppliers/<id>: merges sent + received emails by contact_email
Feature B — pSEO article noindex:
- noindex column on articles (migration 0025)
- NOINDEX_THRESHOLDS per-template lambdas in content/__init__.py
- generate_articles() evaluates threshold and stores noindex=1 for thin-data articles
- <meta name="robots" content="noindex, follow"> in article_detail.html
- Sitemap excludes noindex articles (AND noindex = 0)
- pSEO dashboard noindex count card + article row badge
Tests: 49 new tests (29 outreach, 20 noindex), 1377 total, 0 failures
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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