Split AdditionalServicesStep into IncludedServicesStep + ExtrasStep

- IncludedServicesStep: package inclusions at no cost (dressing, viewing,
  prayers, funeral announcement). Sub-options render inside parent card.
- ExtrasStep: optional paid extras for lead generation (catering, music,
  coffin bearing, newspaper notice). POA support, tally of priced items.
- AddOnOption: children prop (sub-options inside card), priceLabel prop
  (custom text like "Price on application" in brand copper italic)
- Flattened sub-option pattern: inline toggle rows inside parent card
  instead of nested card-in-card ("Russian doll") pattern
- Coffin bearing now uses toggle + bearer type radio (consistent UX)
- Removed old AdditionalServicesStep (replaced by two new pages)

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

docs/memory/component-registry.md

@@ -86,8 +86,10 @@ duplicates) and MUST update it after completing one.
 | CrematoriumStep | done | WizardLayout (centered-form) + Card + Badge + ToggleButtonGroup + Typography + Button + Divider | Wizard step 8 — crematorium. Two variants: Service & Cremation (compact card + witness Yes/No toggle), Cremation Only (compact card + "Cremation Only" badge + "Included in Package" notice). Single pre-selected crematorium, no multi-select. |
 | CemeteryStep | done | WizardLayout (centered-form) + ToggleButtonGroup + Collapse + TextField (select) + Typography + Button + Divider | Wizard step 9 — cemetery. ToggleButtonGroups (Yes/No/Not sure) with progressive disclosure. Own plot → locate dropdown. No plot → preference? → select dropdown. No card grid. |
 | CoffinsStep | done | WizardLayout (grid-sidebar) + Card + Badge + Collapse + Slider + TextField + Pagination + Divider + Link | Wizard step 10 — coffin browsing. Grid-sidebar: filter sidebar (categories with expandable subcategories, dual-knob price slider with editable inputs, sort by) + 3-col card grid. CoffinCard with thumbnail hover preview. Equal-height cards, subtle bg for white-bg product photos. Card click → CoffinDetailsStep (no Continue). 20/page max. Conditional allowance info bubble. |
-| CoffinDetailsStep | done | WizardLayout (centered-form) + Paper + RadioGroup + Divider + Button | Wizard step 11 — coffin customisation. Profile (image + specs) + 3 option sections (handles, lining, nameplate). Branded selected state. |
-| AdditionalServicesStep | done | WizardLayout (centered-form) + Paper + AddOnOption + RadioGroup + Collapse + Divider + Button | Wizard step 12 — additional services. Section 1: complimentary. Section 2: paid extras. Multi-level progressive disclosure. |
+| CoffinDetailsStep | done | WizardLayout (detail-toggles) + ImageGallery + Divider + Button | Wizard step 11 — coffin detail. Two-panel: gallery + product details dl (left), name + description + colour swatches + allowance-aware price + CTA (right). Allowance logic: fully covered / partially covered / no allowance. Colour selection does not affect price. |
+| ~~AdditionalServicesStep~~ | removed | — | Replaced by IncludedServicesStep + ExtrasStep. Split for clearer distinction between free inclusions and paid extras. |
+| IncludedServicesStep | done | WizardLayout (centered-form) + AddOnOption + RadioGroup + Collapse + Divider + Button | Wizard step 12a — included services. Package inclusions at no additional cost: dressing, viewing (with same-venue sub-option), prayers/vigil, funeral announcement. Sub-options render inside parent card. |
+| ExtrasStep | done | WizardLayout (centered-form) + AddOnOption + Card + Switch + RadioGroup + Collapse + Divider + Button | Wizard step 12b — optional extras. Lead-gen interest capture: catering, music (inline live musician toggle + musician type), coffin bearing (toggle + bearer type), newspaper notice. POA via `priceLabel`. Tally of priced selections. No nested cards. |
 | SummaryStep | done | WizardLayout (centered-form) + Accordion + Paper + IconButton + Divider + Button | Wizard step 13 — plan review. Accordion sections with edit buttons. dl/dt/dd definition lists. Total bar. Share button. |
 | PaymentStep | done | WizardLayout (centered-form) + ToggleButtonGroup + Paper + Collapse + Checkbox + Divider + Button | Wizard step 14 — payment. Plan (full/deposit) + method (card/bank). PayWay iframe slot. Bank transfer details. Terms checkbox. |
 | ConfirmationStep | done | WizardLayout (centered-form) + Button | Wizard step 15 — confirmation. Terminal page. At-need: "submitted" + callback. Pre-planning: "saved" + return-anytime. Muted success icon. |