Influencer Picker + Public Profile

• Migration c1d2e4f5a6b7 creates advertiser_favorite_influencers table
• New endpoints on /influencers:
• POST/DELETE /{ws}/favorite — idempotent star toggle
• GET /favorites — starred influencers
• GET /recent — influencers briefed in last 90 days
• GET /search extended with sort=recommended|follower_count_desc|engagement_rate_desc|rating_desc
• Every row now carries match_score, match_reasons[], has_restriction_conflict, is_favorite, rating_avg, rating_count, prior_briefs_count (4 batched queries, no N+1)
• Scoring formula: 30% niche match + 10% collab types configured + 15% rating + 10% prior briefs + 8/4% verified + 5% engagement
• Recommended tab auto-excludes restriction conflicts; other tabs flag them with red "Cannot book" banner
• Frontend: /influencers page rewritten with 4 pill sub-tabs (Recommended / Favorites / Recent / All), URL persistence ?sub=, filters always visible, star toggle on cards, match-reason chips, "Starred N days ago" / "Sent brief N days ago" badges

• Migration d1e2f3a4b5c6 creates property_samples + media_kit_views (GDPR: SHA-256 IP hash only)
• Sample Work — per-property CRUD via POST/GET/PATCH/DELETE /workspaces/{ws}/properties/{pid}/samples. 20 active cap, URL validation, sort_order, metrics JSONB (likes/views/comments/shares/reach)
• Past Brands — stored in existing workspace.branding.past_brands JSONB array (no schema change). Up to 20 entries with name + logo_url
• View tracking (no-auth): POST /public/media-kit/{slug-or-id}/track-view — fires on public page mount, 10-min IP-hash dedupe
• Analytics (auth): GET /media-kit/analytics — total/7d/30d views, 30-day sparkline, top 5 referrers, unique visitors
• Referrer normalization : hostnames only (linkedin.com not linkedin.com/feed), internal self-referrers filtered, no-referrer visits bucketed as "Direct"
• Frontend:
• Sidebar "Media Kit" → "Public Profile"
• Properties page edit modal: SampleWorkManager component
• Settings → Workspace: "Past Brands" editor with live preview strip
• /profile/media-kit: analytics card at top (big 30-day count, recharts sparkline, top-3 referrers)
• /public/media-kit/[slug]: sample work grid per property, past-brands strip, fires view tracking on mount
• PDF template extended to include samples + past brands

Backend: 2 migrations + 3 models + media_kit_analytics.py + extensions to briefs/marketplace/public/workspaces. Frontend: SampleWorkManager component, public.ts API client, rewrites of influencers/properties/settings/profile-media-kit pages.

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