[MaxGhenis]

Into #77's branch (introduction-october-2026), so the webinar deck carries the funder credit and its final address before the webinar.

Why: on 22 October the Nuffield Foundation's communications team asked (via Anvar) for "funded" rather than "supported", and for its logo, the white version on a dark background. That request was about the webinar's share materials; the draft share cards use the same credit. Max agreed on 26 October to add the same credit to this deck's closing slide.

What changes

• The slug (28 October, at Max's request): the deck moves from /slides/introduction-2026 to /slides/autumn-budget-2026. The folder, the config and the QR image's folder are renamed, /slides/introduction-2026 redirects (308) to the new address, and the page title drops "UK", as the cover did on 28 October. The rest of this PR's paths read autumn-budget-2026 in place of introduction-2026.
• Closing slide: "Funded by" and Nuffield's white logo, under the contacts, linked to the Nuffield project page (sources.nuffield, which the deck defined but didn't use).
• The logo: public/logos/funders/nuffield-foundation-white.svg, Nuffield's white logo as downloaded from nuffieldfoundation.org on 22 October, byte for byte (3,432 bytes, SHA-256 b3727385…654c). It sits on the slide's dark gradient.
• Short screens: below 760px tall, the closing slide's title, QR card and contacts tighten a little, so "Thank you" stays clear of the PolicyEngine logo above it once the credit is added.
• Tests:
  • slideshows/introduction-2026/funder.test.ts pins the logo's hash, checks that the size in content.ts matches the SVG's own (117.862 × 70, rounded), and checks the "Funded by" label. It fails if one byte of the logo changes; I checked that by appending a space.
  • slideshows/introduction-2026/slides/ClosingSlide.test.tsx renders the closing slide and checks that it shows the logo with "Funded by" beside it, linked to the Nuffield page.
• README and speaker notes: they say where the logo came from and not to recolour or redraw it. The close's note says to thank Nuffield with "funded by", not "supported by".

Checked locally

• bun run lint: 0 errors. The deck's folder has no warnings.

• bun run typecheck: passes.

• bun run test: 214 pass (rebased on Add the Analysing the UK Autumn Budget 2026 webinar deck #77's ea72ca7, and again after the slug change).

• bun run build: passes.

• The closing slide in the browser, measuring the space between the bottom of the PolicyEngine logo and the top of "Thank you" (before this PR, where I measured it):

  Viewport	Space	Before	Nuffield logo
  1920 × 1080	162 px		121 × 72 px
  1440 × 851	48 px		72 px tall
  1440 × 850	104 px		64 px tall
  1366 × 761	60 px		64 px tall
  1366 × 760	103 px		48 px tall
  1280 × 720	83 px		81 × 48 px
  1280 × 650	48 px	46 px	48 px tall
  1366 × 615	30 px	29 px	48 px tall
  1280 × 600	23 px	21 px	48 px tall
  1280 × 558	2 px	about 0 px	48 px tall

  At every size at least 67 px of the slide is left below the logo, which clears the slide counter. At 1280 × 720 the logo loads and sits 16 px below the contacts.

The repo's CI runs only on PRs into main, so these local runs are the checks here.

Not changed here, for #77 before Wednesday

• The analysis slide embeds the Drill 5 build (uk-ab2026-drill5.vercel.app), which carries the MOCK DATA banner. It needs to point at the live dashboard on the day.
• The closing QR and address are uk-autumn-budget-2026.vercel.app/uk/autumn-budget-2026. policyengine.org/uk/autumn-budget-2026 returns 404 today (checked 26 Oct, about 21:15Z).

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Project	Deployment	Actions	Updated
policyengine-slides	Ready	Preview	Oct 28, 2026 2:56pm UTC