Add the Good Growth Foundation introduction deck for 23 October 2026

lib/slideshows.ts

@@ -28,8 +28,10 @@ import { overhang2026BackupConfig } from "@/slideshows/overhang-2026-backup/conf
 import { overhang2026LightningConfig } from "@/slideshows/overhang-2026-lightning/config";
 import { blsTaxsim2026Config } from "@/slideshows/bls-taxsim-2026/config";
 import { scottishGovernment2026Config } from "@/slideshows/scottish-government-2026/config";
+import { goodGrowthFoundation2026Config } from "@/slideshows/good-growth-foundation-2026/config";
 
 export const slideshows: SlideshowConfig[] = [
+  goodGrowthFoundation2026Config,
   scottishGovernment2026Config,
   blsTaxsim2026Config,
   overhang2026Config,

slideshows/good-growth-foundation-2026/README.md

@@ -0,0 +1,63 @@
+# PolicyEngine UK: an introduction, 23 October 2026
+
+10 slides at `/slides/good-growth-foundation-2026`: an introduction to
+PolicyEngine UK for the Good Growth Foundation, for a 20 to 30 minute slot.
+
+1. Title
+2. What PolicyEngine is (the rules, the households and the results)
+3. How microsimulation works (six build steps)
+4. What the UK model covers
+5. From surveys to a population that represents the UK (the data)
+6. What the weights are calibrated to (UK calibration targets)
+7. A targeted energy bill discount (an analysis example)
+8. Recent UK research
+9. Who uses PolicyEngine UK
+10. Thank you, with the Autumn Budget webinar invitation and its registration QR code
+
+Slides 2 and 9 come from the 9 October introduction deck
+(`introduction-2026`, policyengine-slides #77); slide 2 merges its "What
+PolicyEngine is" and "How it works" slides. Slides 5 and 7 come from the
+Scottish Government deck of the same day (`scottish-government-2026`), told
+for the whole UK: the pipeline drops the Scotland-only stage, and the decile
+chart covers Great Britain. Slide 3 follows the microsimulation walkthrough in
+the UK event 2025 deck (`model-scope`, slide 2), with illustrative households
+and figures rather than survey records.
+
+- `config.ts` controls the slide order and meeting metadata.
+- `content.ts` holds the sources, model coverage, pipeline stages, energy
+  figures and the community list, with a comment on where each comes from.
+- `slides/index.tsx` contains the slides; `slides/figures.tsx` draws the
+  pipeline, the target table and the two energy charts in HTML;
+  `slides/microsim.tsx` is the walkthrough, which reveals one step per build.
+
+Figures and sources:
+
+- Model coverage is read from the policyengine-uk 2.146.6 parameter tree;
+  732 of its 795 parameter files carry a reference, and its YAML tests hold
+  over 4,000 cases.
+- The pipeline and target table cite Microcosm at the commit the Scottish
+  Government deck used (main on 8 October 2026). The table groups the 31
+  families of the national target references (1,231 rows) and the six of the
+  local ones (20,885 rows), with one row count for each dataset: the
+  local-area dataset binds every national target as well as its own. The
+  national file has held over 1,000 rows in every build since the 4 October
+  release.
+- The energy figures are the Resolution Foundation's flat option in 2026-27
+  from uk-energy-reforms 14bf3b0 (Microcosm UK 2024-25 national release,
+  policyengine-uk 2.102.3), and match the dashboard's data file. The slide
+  shows the Great Britain total, the eleven regions (each with an effective
+  sample of 273 to 734 households) and national income deciles; it leaves
+  poverty changes out.
+- Recent research shows the eight newest UK items on
+  policyengine.org/uk/research on 23 October 2026, newest first, with covers
+  from policyengine-app-v2 (`website/public/assets/posts`).
+
+The closing slide invites the audience to the Autumn Budget 2026 webinar
+(Wednesday 28 October, 4:30pm UK time), as announced on the policyengine.org
+home page. `public/images/good-growth-foundation-2026/qr-autumn-budget-webinar.svg`
+encodes the Zoom registration link; it was generated locally with segno and
+checked by decoding it from slide screenshots at three screen sizes.
+
+Logos in `public/logos/orgs/` come from the introduction deck, except NIESR's,
+which comes from policyengine-app-v2. The community grid leaves out the Good
+Growth Foundation itself.

slideshows/good-growth-foundation-2026/config.ts

@@ -0,0 +1,36 @@
+import type { SlideshowConfig } from "@/lib/types";
+import {
+  ClosingSlide,
+  CoverageSlide,
+  EnergyDiscountSlide,
+  MicrosimSlide,
+  PipelineSlide,
+  PublicationsSlide,
+  TargetsSlide,
+  TitleSlide,
+  UsersSlide,
+  WhatSlide,
+} from "./slides";
+import { MICROSIM_STEPS } from "./slides/microsim";
+
+export const goodGrowthFoundation2026Config: SlideshowConfig = {
+  id: "good-growth-foundation-2026",
+  title: "PolicyEngine UK: an introduction",
+  description:
+    "PolicyEngine UK for the Good Growth Foundation: how microsimulation works, the model, its data and calibration targets, an energy discount example and recent UK research.",
+  date: "2026-10-23",
+  location: "Good Growth Foundation",
+  footerText: "Good Growth Foundation · 23 October 2026",
+  slides: [
+    TitleSlide,
+    WhatSlide,
+    { component: MicrosimSlide, builds: MICROSIM_STEPS },
+    CoverageSlide,
+    PipelineSlide,
+    TargetsSlide,
+    EnergyDiscountSlide,
+    PublicationsSlide,
+    UsersSlide,
+    ClosingSlide,
+  ],
+};