agent: foundation — add master brief reference docs

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/brief/influencer-landscape.md

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+<!-- Source: Kon Master Brief — §18 ADHD Content Creator & Influencer Landscape -->
+
+## 18. ADHD Content Creator & Influencer Landscape
+
+### Key creators
+- **Jessica McCabe / How to ADHD:** 1.9M YouTube subscribers, Patreon earning £12,500+/month, NYT bestselling book, TEDx talk with 6M views. Regularly reviews productivity tools. The gold standard.
+- **Connor DeWolfe:** 5.6M TikTok followers. Largest raw audience, more entertainment-focused.
+- **Dani Donovan:** 625K TikTok, 127K on X. ADHD comics/infographics with 100M+ cumulative views. Author of *The Anti-Planner*. Natural fit for productivity tool partnerships.
+- **ADHD Love (Rich and Rox):** 789K TikTok, 471K YouTube. Built their own body-doubling app (Dubbii). Technical credibility + community trust.
+
+### Key podcasts
+- **CHADD's All Things ADHD:** 888K+ downloads, actively seeks sponsors
+- **ADHD for Smart Ass Women (Tracy Otsuka):** ~7M downloads
+- **I Have ADHD Podcast (Kristen Carder):** Engaged, action-oriented listeners
+- **Taking Control, Hacking Your ADHD, ADHD ReWired:** All accept sponsorships
+
+### Key newsletters/Substack
+- Jesse J. Anderson (*Extra Focus*), Taylor Allbright (*ADHD Unpacked*), Megan Anna Neff (*Neurodivergent Notes*)
+
+### UK advocacy organisations
+- **ADHD Foundation:** Largest user-led ADHD organisation in Europe
+- **ADHD UK:** Launched a discovery platform reviewing tools and strategies — natural fit for Kon
+- **Neurodiversity in Business:** Corporate-facing charity
+
+### Sponsorship costs
+- Micro-influencers (10K–100K followers): £400–£4,000/post (best value)
+- Mid-tier (Dani Donovan, ADHD Love): £4,000–£20,000
+- Mega-tier (Jessica McCabe, Connor DeWolfe): £8,000–£40,000+
+- Podcast host-read ads: £12–£24 CPM
+
+### Discovery pattern
+Neurodivergent users discover tools through trusted creators → validate through Reddit peer recommendations → search app stores. Community punishes perceived inauthenticity heavily.