Toolkit: ship the rest of the ladder (Spark templates + handout, Circuit Video Maker + split tester, Nexus Leader Ops, grants, co-brand, partner code)

- Spark: one-tap banner/text campaign templates aimed at the member's link (POST /api/my/toolkit/template); printable QR handout at /handout/<username>
- Circuit: videomaker.js renders every promo video/short with the member's end card + QR via ffmpeg (Dockerfile adds ffmpeg + ttf-dejavu), hosted in Spaces; split tester compares join angles
- Nexus: Leader Ops (three-level triage, stalled flags, one-click nudges), AI team broadcast kind + Send to my team, credit grants from the leader's earned pool, co-branded join page (sponsor bio for level-3 sponsors), member-funded partner code (promo_codes.funder; redemption charges the funder) + /partners?ref=<username>
- toolkit ladder all live; chatbot updated; my.js v20260914e, site.css v20260914c, join.js/partners.js v20260914a

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

db.js

@@ -80,6 +80,7 @@ async function bootstrap() {
     try { await q(sql); }
     catch (e) { if (!['ER_DUP_FIELDNAME', 'ER_DUP_KEYNAME'].includes(e.code)) throw e; }
   };
+  await alterSafe('ALTER TABLE promo_codes ADD COLUMN funder VARCHAR(190) NULL'); // member-funded partner codes (Nexus), 2026-09-14
   await alterSafe('ALTER TABLE accounts ADD COLUMN username VARCHAR(30) NULL');
   await alterSafe('ALTER TABLE accounts ADD UNIQUE KEY uq_username (username)');
   await alterSafe('ALTER TABLE accounts ADD COLUMN member_id INT NULL');