docs: update CHANGELOG and PROJECT.md for follow-up scheduling, activity timeline, and noindex features

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

PROJECT.md

@@ -114,6 +114,8 @@
 - [x] **Lead matching notifications** — `notify_matching_suppliers` task on quote verification + `send_weekly_lead_digest` every Monday; one-click CTA token in forward emails
 - [x] **Migration 0022** — `status_updated_at`, `supplier_note`, `cta_token` on `lead_forwards`; supplier respond endpoint; inline HTMX lead detail actions; extended quote form fields
 - [x] **Outreach pipeline** (`/admin/outreach`) — cold B2B supplier outreach with separate sending domain (`hello.padelnomics.io`), 6-stage pipeline cards, HTMX inline status + note editing, CSV import, bulk add-to-pipeline from supplier list, compose integration (auto-updates pipeline on send); migration 0024 adds 4 outreach columns to suppliers; 44 tests
+- [x] **Outreach follow-up scheduling + activity timeline** — `follow_up_at` date column on suppliers (migration 0025), HTMX date picker on outreach rows, amber "follow-ups due" banner with `?follow_up=due` filter, activity timeline on supplier detail merging sent + received emails by contact email; 29 tests
+- [x] **pSEO article noindex** — `noindex` column on articles (migration 0025), `NOINDEX_THRESHOLDS` per-template lambdas in `content/__init__.py`, robots meta tag in `article_detail.html`, sitemap exclusion, pSEO dashboard count card + article row badge; 20 tests
 
 ### SEO & Legal
 - [x] Sitemap (both language variants, `<lastmod>` on all entries)