Add package comparison feature: CompareBar, ComparisonTable, ComparisonPage

New components for side-by-side funeral package comparison:

- CompareBar molecule: floating bottom pill with fraction badge (1/3, 2/3, 3/3),
  contextual copy, Compare CTA. For ProvidersStep and PackagesStep.
- ComparisonTable organism: CSS Grid comparison with info card, floating verified
  badges, separate section tables (Essentials/Optionals/Extras) with left accent
  borders, row hover, horizontal scroll on narrow desktops, font hierarchy.
- ComparisonPage: WizardLayout wide-form with Share/Print actions. Desktop shows
  ComparisonTable, mobile shows mini-card tab rail + single package card view.
  Recommended package as separate prop (D038).

Also fixes PackageDetail: adds priceLabel pass-through (D039), updates stories
to Essentials/Optionals/Extras section naming (D035).

Decisions: D035-D039 logged. Audits: CompareBar 18/20, ComparisonTable 17/20.

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

docs/memory/component-registry.md

@@ -53,6 +53,7 @@ duplicates) and MUST update it after completing one.
 | LineItem | done | Typography + Tooltip + InfoOutlinedIcon | Name + optional info tooltip + optional price. Supports allowance asterisk, total variant (bold + top border). Font weight 500 (D019), prices text.secondary for readability hierarchy. Audit: 19/20. |
 | ProviderCardCompact | done | Card (outlined) + Typography | Horizontal compact provider card — image left, name + location + rating right. Used at top of Package Select page. Separate from vertical ProviderCard. |
 | CartButton | done | Button + DialogShell + LineItem + Divider + Typography | Outlined pill trigger: receipt icon + "Your Plan" + formatted total in brand colour. Click opens DialogShell with items grouped by section via LineItem, total row. Mobile: icon + price only. Lives in WizardLayout `runningTotal` slot. |
+| CompareBar | done | Badge + Button + IconButton + Typography + Paper + Slide | Floating comparison basket pill. Fixed bottom, slide-up/down. Package count badge + provider names + remove buttons + Compare CTA. Max 3 user packages. Disabled CTA when <2. Inline error for max-reached. Mobile: compact count + CTA only. Audit: 18/20. |
 
 ## Organisms
 
@@ -60,7 +61,8 @@ duplicates) and MUST update it after completing one.
 |-----------|--------|-------------|-------|
 | ServiceSelector | done | ServiceOption × n + Typography + Button | Single-select service panel for arrangement flow. Heading + subheading + ServiceOption list (radiogroup) + optional continue Button. Manages selection state via selectedId/onSelect. maxDescriptionLines pass-through. |
 | PricingTable | planned | PriceCard × n + Typography | Comparative pricing display |
-| PackageDetail | done | LineItem × n + Typography + Button + Divider | Right-side package detail panel. Warm header band (surface.warm) with "Package" overline, name, price (brand colour), Make Arrangement + Compare (with loading) buttons. Sections (before total) + total + extras (after total, with subtext). T&C grey footer. Audit: 19/20. Maps to Figma Package Select (5405:181955). |
+| PackageDetail | done | LineItem × n + Typography + Button + Divider | Right-side package detail panel. Warm header band (surface.warm) with "Package" overline, name, price (brand colour), Make Arrangement + Compare (with loading) buttons. Sections: Essentials + Optionals (before total) + total + Extras (after total, with subtext). `priceLabel` pass-through to LineItem (D039). T&C grey footer. Audit: 19/20. |
+| ComparisonTable | done | Typography + Button + Badge + Link + Tooltip | Side-by-side package comparison CSS Grid. Sticky header cards with provider info + price + CTA. Row-merged sections (union of all items). 7 cell value types (discriminated union D036). Recommended column with warm bg + badge. Verified → "Make Arrangement", unverified → "Make Enquiry". ARIA table roles. Desktop only (mobile in ComparisonPage). Audit: 17/20. |
 | FuneralFinder (V3) | done | Typography + Button + Divider + Select + MenuItem + OutlinedInput + custom StatusCard/SectionLabel | **Production version.** Hero search widget — clean form with status cards. Standard card container (surface.raised, card shadow). "How Can We Help" section: two side-by-side StatusCards (Immediate Need default-selected / Pre-planning) — white bg, neutral border, brand border + warm bg when selected, stack on mobile. "Funeral Type" Select + "Location" OutlinedInput with pin icon — standard outlined fields, no focus ring (per design). Overline section labels (text.secondary). CTA "Find Funeral Directors →" always active — validates on click, scrolls to first missing field. Required: status + location. Funeral type defaults to "show all". Dividers after header and before CTA. WAI-ARIA roving tabindex on radiogroup. aria-labelledby via useId(). Critique: 33/40 (Good). Audit: 18/20 (Excellent). |
 | FuneralFinder V1 | archived | Typography + Button + Chip + Input + Divider + Link + custom ChoiceCard/TypeCard/CompletedRow/StepHeading | Archived — viewable in Storybook under Archive/. Stepped conversational flow. Audit: 14/20. Critique: 29/40. |
 | FuneralFinder V2 | archived | Typography + Button + Input + Divider + Select + MenuItem + custom StepCircle | Archived — viewable in Storybook under Archive/. Quick-form with step circles. Audit: 18/20. Critique: 33/40. |
@@ -100,6 +102,7 @@ duplicates) and MUST update it after completing one.
 | ConfirmationStep | done | WizardLayout (centered-form) + Button | Wizard step 15 — confirmation. Terminal page. At-need: "submitted" + callback. Pre-planning: "saved" + return-anytime. Muted success icon. |
 | UnverifiedProviderStep | done | WizardLayout (list-detail) + ProviderCardCompact + ProviderCard + Badge + Button + Divider + Typography | Unverified provider detail. Left: compact card + "Listing" badge + available info (conditional dl) + verified recommendations. Right: warm header band + detail rows + "Make an Enquiry" CTA. Graceful degradation (no data → straight to enquiry). 4 story variants. |
 | HomePage | done | FuneralFinderV3/V4 (via finderSlot) + ProviderCardCompact + Button + Typography + Accordion + Divider + Navigation (prop) + Footer (prop) | Marketing landing page. 4 archived versions: V1 (split hero), V2 (full-bleed parsonshero.png), V3 (hero-3.png + updated copy + logo bar + venue photos + warm CTA gradient), V4 (same as V3 but with FuneralFinderV4 stepped form via finderSlot). `finderSlot` prop allows swapping finder widget. Light grey footer (surface.subtle). |
+| ComparisonPage | done | WizardLayout (wide-form) + ComparisonTable + Chip + Card + LineItem + Typography + Button + Divider | Package comparison page. Desktop: full ComparisonTable with sticky headers. Mobile: tabbed card view with horizontal chip rail (role="tablist") + single package card (role="tabpanel"). Recommended package as additional column/tab (separate prop D038). Back link, help bar. |
 
 ## Future enhancements