Update session log with review checkpoint and iteration plan

User reviewed all 15 steps, provided feedback. 7-batch iteration plan
created with all design decisions resolved. Next: Batch 1 (atom fixes).

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

docs/memory/session-log.md

@@ -53,9 +53,46 @@ Each entry follows this structure:
 - None
 
 **Next steps:**
-- **Phase 4: User review checkpoint** — user reviews all 15 steps in Storybook, provides feedback, agent iterates
+- Feedback iteration Batch 1 (next session)
-- Phase 5: Retroactive review backlog (can interleave with Phase 4)
+
-- Phase 6: Integration planning (after checkpoint resolved)
+---
+
+### Session 2026-03-29d — User review checkpoint + iteration planning
+
+**Agent(s):** Claude Opus 4.6 (1M context)
+
+**Work completed:**
+- **D034 implemented:** Form error copper styling unified across theme (MuiOutlinedInput, MuiFormHelperText, MuiFormLabel, ToggleButtonGroup).
+- **Tagged `v0.1-wizard-groomed`** — safe rollback point before feedback iteration.
+- **Roadmap documented** in persistent memory (`project_roadmap.md`).
+- **User review checkpoint completed.** User reviewed all 15 steps in Storybook and provided detailed feedback across every step.
+- **Iteration plan created** at `.claude/plans/zany-jingling-lynx.md` — 7 batches, ~6-8 sessions estimated.
+- **All 8 design decisions resolved** (D-A through D-H): display3 headings everywhere, 420px fixed left column, Popover filters, click-to-navigate (no Continue buttons on selection steps), two-step modal for preview+auth, full-width coffin grid, remove coffin customisation for now, defer map pins.
+
+**Key feedback themes:**
+- ToggleButtonGroup: spacing tight, content misaligned, selected border not showing (CSS specificity bug)
+- List-map layout: needs fixed-width left column, scrollable list with fixed header, no gap above map
+- New FilterPanel component needed (reusable across providers, venues, coffins)
+- PreviewStep + AuthGateStep consolidation into two-step modal
+- CoffinDetailsStep: remove customisation, simplify to details + CTA
+- Several copy and spacing issues across steps
+
+**Decisions made:**
+- D-A: `display3` heading everywhere (brand warmth)
+- D-B: 420px fixed left column in list-map layout
+- D-C: FilterPanel uses Popover (MVP), Drawer for mobile later
+- D-D: Click-to-navigate on ProvidersStep (remove selection state + Continue)
+- D-E: Remove standalone PreviewStep + AuthGateStep, use two-step ArrangementDialog
+- D-F: CoffinsStep full-width grid with FilterPanel button
+- D-G: Remove coffin customisation, note as future enhancement
+- D-H: Map pins deferred
+
+**Open questions:**
+- None
+
+**Next steps:**
+- Start Batch 1: Atom + Template Foundation (ToggleButtonGroup fixes, heading standardisation, spacing normalisation)
+- Plan file: `.claude/plans/zany-jingling-lynx.md`
 
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