Update session log and component registry with Phase 0 + 1 progress

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

docs/memory/session-log.md

@@ -26,6 +26,41 @@ Each entry follows this structure:
 
 ## Sessions
 
+### Session 2026-03-29 — Wizard Phase 0 + Phase 1 (foundation + IntroStep)
+
+**Agent(s):** Claude Opus 4.6 (1M context)
+
+**Work completed:**
+- **Phase 0 — Foundation components:**
+  - WizardLayout template: 5 layout variants (centered-form, list-map, list-detail, grid-sidebar, detail-toggles), nav slot, sticky help bar, back link, progress stepper + running total, `<main>` landmark
+  - Collapse atom: thin MUI Collapse wrapper with unmountOnExit for progressive disclosure
+  - ToggleButtonGroup atom: exclusive single-select with fieldset/legend a11y, FA brand styling, descriptions, error state
+- **Phase 1 — IntroStep page:**
+  - Wizard step 1 using centered-form layout
+  - forWhom + hasPassedAway ToggleButtonGroups with progressive disclosure via Collapse
+  - Auto-sets hasPassedAway="no" when forWhom="myself" (pre-planning)
+  - Grief-sensitive copy adapts subheading per selection state
+  - `<form>` wrapper for landmark + Enter-to-submit
+  - aria-live on subheading, tabIndex=-1 on heading for focus management
+  - Pure presentation — props in, callbacks out
+- **Audit:** IntroStep scored 18/20, fixed P1 (`<main>` landmark) and P2 (`<form>` wrapper) → 20/20
+
+**Decisions made:**
+- Templates live at `src/components/templates/` (new atomic tier)
+- Pages live at `src/components/pages/` (new atomic tier)
+- WizardLayout uses `<main>` wrapper around all variants (not per-variant)
+- ToggleButtonGroup uses `HTMLFieldSetElement` ref (not `HTMLDivElement`) due to `component="fieldset"`
+
+**Open questions:**
+- None
+
+**Next steps:**
+- Phase 2: Build Step 2 (Providers) — list-map layout variant
+- Continue building wizard steps in spec order
+- Retroactive review backlog still pending (molecules audit, organisms normalize)
+
+---
+
 ### Session 2026-03-27b — Retroactive review Phase 1 + 2.1, wizard planning
 
 **Agent(s):** Claude Opus 4.6 (1M context)