docs(leads): document Leads store migration and payment UI fix; note tests update

tests/README.md

@@ -33,9 +33,14 @@ Shared test helpers (`tests/_helpers/`)
 | `ae_defaults.ts` | `ae_app_local_data_defaults` — full localStorage seed object with `__version` |
 | `idb_helpers.ts` | `inject_badge_and_template()` — write badge + template records into IndexedDB |
 | `minimal_ae_api_mocks.ts` | `attach_minimal_routes()`, `seed_trusted_session()`, `setup_badge_test_page()` |
+| `leads_helpers.ts` | `setup_leads_test_page()`, `seed_events_loc()`, `seed_ae_loc()`, `attach_leads_routes()`, `minimal_exhibit()`, `minimal_tracking()` — Leads module test helpers |
+
+Note: After the Leads persisted-store migration, tests that seed localStorage should also seed the new `leads_loc` defaults and include the expected `__version` values (see `src/lib/stores/store_versions.ts`) to avoid store wipe behavior during test startup. Update `tests/_helpers/leads_helpers.ts` accordingly.
 
 **`setup_badge_test_page(page, event_id)`** is the one-call `beforeEach` for any badge/event print page test. It wires the pageerror listener, all V3 API mocks, and the trusted auth localStorage seed in one call.
 
+**`setup_leads_test_page(page, event_id, exhibit_id, opts)`** is the one-call `beforeEach` for leads exhibit page tests. Accepts `access` (ae_loc flags), `auth_kv` (per-exhibit auth), `staff_passcode`, and `tracking_li` options.
+
 Writing / modifying tests
 - Tests are TypeScript files under `tests/` and should export Playwright `test` blocks.
 - The badge tests (`event_badge_*.test.ts`) are the **canonical template** — copy the pattern from there when adding tests for any new event module feature.
@@ -408,20 +413,31 @@ These are IDs for records that we can use for testing. Please do not delete them
 
 ### Events Modules
 * Aether test/demo Event: 'pjrcghqwert' (1) "Demo One Sky IT Conference"
+
 * Aether test/demo Event Session: 'DOW3h7v6H42' (703) "How To Do Things"
 * Aether test/demo Event Session (Digital Posters): "K8cxUIEWyQk" "The Beginning of Digital Posters!"
 * Aether test/demo Event Session (Digital Posters): "1Un1xI1Rgk8" "Poster Session 99: All about posters!"
 * Aether test/demo Event Presentation: '7U2eXSjR6H4' (1670) "Build a House"
 * Aether test/demo Event Presenter: 'gT-hxnifb-0' (2202) "Bob The Builder"
+
 * Aether test/demo Event File: 'OOsHXtng5mr' (2985) "1 Quick Test for macOS.mp4"
+
 * Aether test/demo Event Badge: 'UIJT-73-63-61' (37163) "Scott Idem"
 * Aether test/demo Event Person: 'ffkKxiHpOEC' (16603) "Scott Idem"
+
 * Aether test/demo Event Badge Template: 'jgfixEpYp1B' (18) "Dev Demo 202x"
 * Aether test/demo Event Badge Template: 'rzmUgsk7mkq' (19) "Dev Demo 202x Workshops"
+
 * Aether test/demo Event Location: 'VXXY-98-46-14' (26) "Ballroom 1"
 * Aether test/demo Event Location: 'FGRN-67-92-45' (298) "Ballroom AB"
 * Aether test/demo Event Location: 'PQKB-15-39-81' (78) "Poster Display Station A"
 
+* Aether test/demo Event Exhibit: 'xK_9yEj1bQY' (1) - "One Sky's Awesome Exhibit"
+* Aether test/demo Event Exhibit: 'acHCkrCDaYs' (3) - "Exhibit for Precon Events"
+* Aether test/demo Event Exhibit: 'MIFC-74-11-33' (177) - "OSIT Test Booth"
+* Aether test/demo Event Exhibit: 'yMawNHiNkHo' (4) - "Dev Virtual Exhibit"
+* Aether test/demo Event Exhibit: 'XgtAc3xhVsU' (2) - "The Org Group Virtual Exhibit"
+
 ### Journals Module
 * Aether test/demo Journal: 'BVYE-94-46-29' (42) "Testing Things"
 * Aether test/demo Journal Entry: 'xRx-Y4-h3-fU' (233) "Another Journal Entry in the Test Journal"