docs(27-00): complete wave 0 E2E scaffolding plan

- Create 27-00-SUMMARY.md with test changes documentation
- Update STATE.md: advance plan to 3/4, add decisions, update session
- Update ROADMAP.md: reflect 2/4 summaries complete for phase 27

.planning/phases/27-top-nav-restructure-and-search-bar-rethink/27-00-SUMMARY.md

@@ -0,0 +1,72 @@
+---
+phase: 27-top-nav-restructure-and-search-bar-rethink
+plan: "00"
+subsystem: e2e-tests
+tags: [e2e, wave-0, navigation, testing]
+dependency_graph:
+  requires: []
+  provides: [27-00-e2e-scaffolding]
+  affects: [e2e/dashboard.spec.ts, e2e/collection.spec.ts]
+tech_stack:
+  added: []
+  patterns: [playwright-test-fixme, wave-0-red-tests]
+key_files:
+  created: []
+  modified:
+    - e2e/dashboard.spec.ts
+    - e2e/collection.spec.ts
+decisions:
+  - "Wave 0 tests use test.fixme for removed dashboard cards rather than deletion — preserves test intent for future reference"
+  - "Old setups tab test replaced with fallback-to-gear assertion matching the Zod .catch('gear') behavior planned in Plans 01-03"
+metrics:
+  duration: ~5min
+  completed: "2026-04-10T21:44:15Z"
+  tasks_completed: 2
+  files_modified: 2
+---
+
+# Phase 27 Plan 00: Wave 0 E2E Test Scaffolding Summary
+
+Wave 0 E2E scaffolding: replaced old dashboard card assertions with TopNav and discovery section tests, removed Setups tab from Collection specs, added standalone /setups route and mobile bottom tab bar tests.
+
+## What Was Done
+
+### Task 1: Update dashboard E2E tests
+
+Updated `e2e/dashboard.spec.ts` to match the post-Phase-27 navigation structure:
+
+- Replaced "shows Collection, Planning, and Setups card headings" with "shows discovery section headings" — now asserts `Popular Setups`, `Recently Added`, and `Trending Categories` section headings
+- Replaced "Collection card links to /collection" with "top nav contains Collection link" — now uses `page.locator("nav")` to find the nav link
+- Added "shows top nav with navigation links" — asserts Home, Collection, Setups are present in the nav element
+- Added "shows bottom tab bar on mobile viewport" — sets viewport to 375x667 and asserts Home, Collection, Setups, Search tab labels are visible
+- Marked "shows collection card with item count of 6", "shows active thread count on Planning card", and "shows setup count on Setups card" as `test.fixme` with explanatory comments about the Phase 27 removal
+
+The "shows GearBox heading" test remains unchanged — GearBox text is still visible as the nav logo.
+
+### Task 2: Update collection E2E tests
+
+Updated `e2e/collection.spec.ts` to reflect Setups tab removal from Collection:
+
+- Replaced "navigates to setups tab" (which asserted Weekend Overnighter at `/collection?tab=setups`) with "setups tab URL falls back to gear tab" — asserts Zpacks Duplex is visible instead
+- Added new `test.describe("Setups page")` block with "navigates to /setups and shows seeded setup" test
+- All Gear tab tests, planning tab test, and gear-is-default test are unchanged
+
+## Commit
+
+- `94e2094` — test(27-00): wave 0 E2E scaffolding for Phase 27 nav restructure
+
+## Deviations from Plan
+
+None — plan executed exactly as written.
+
+## Known Stubs
+
+None. These are test files only — no UI stubs introduced.
+
+## Self-Check
+
+Files modified:
+- `e2e/dashboard.spec.ts` — FOUND
+- `e2e/collection.spec.ts` — FOUND
+
+Commit 94e2094 — FOUND