docs: add Full Supabase migration completion notes to MEMORY.md

Records the 5 migration waves, verification results, patterns established,
and remaining cleanup tasks for future agents.

MEMORY.md

@@ -490,3 +490,70 @@ Push `2d55791` fixes two issues that broke the "Start Docker stack" step:
 - MinIO: not yet wired up (the `MINIO_ROOT_USER`/`PASSWORD` env vars
   are written to `.env` but no service consumes them yet — add a
   `minio` service to docker-compose.yml when storage goes live)
+
+---
+
+# 2026-06-07 — Full Supabase → Drizzle/pg migration complete
+
+**Status: ALL 114 FILES MIGRATED. ZERO @supabase IMPORTS. ZERO rest/v1 CALLS.**
+
+## Migration waves (all committed to main)
+
+| Wave | Branch | Commit | Files | Focus |
+|---|---|---|---|---|
+| 1 | main | `eb9621d` | ~25 | Core admin (orders, products, stops, etc.) |
+| 2-redo | wave-2-redo | `3ad2a48` | ~15 | Communications + marketing (re-done because first subagent's commit was lost to worktree cleanup) |
+| 3 | main | `99a3d66` | ~20 | Billing + integrations + wholesale |
+| 4 | main | `b8317a2` | ~15 | Water-log, time-tracking, reports, etc. |
+| 5-partial | wave-5-final-2 | `67abcaa` | 11 | Analytics, import-*, products/*, settings/features, shipping, referrals |
+| 5-final | wave-5-final-2 | `50201b0` | 31 | Admin components, API routes, water-log, time-tracking, route-trace stubs, lib/supabase.ts (rewritten as pure mock), lib/supabase/server.ts (deleted), api/supabase/route.ts (deleted) |
+
+## Final merge to main
+
+`e7de43e merge: wave-5-final-2 (28 files: Supabase → Drizzle/pg migration complete)`
+
+## Verification
+
+- `grep -rln 'rest/v1\|@supabase' src/` → **0 files**
+- `npx tsc --noEmit` → **clean** (0 errors)
+- `npm run test` → **22/22 pass**
+- `npm run build` → **succeeded** (89/89 static pages)
+- `npx playwright test --project=local` → **10/14 pass** (4 failures are pre-existing: Google OAuth not configured + missing /wholesale route, not migration-related)
+
+## Migration patterns established
+
+- **Read queries** → `pool.query<Row>("SELECT * FROM fn($1, $2)", [a, b])` for SECURITY DEFINER RPCs
+- **CRUD** → `withTenant(brandId, async (db) => db.select().from(table).where(eq(table.tenantId, brandId)))` for tenant-scoped reads
+- **Writes** → `withTx(async (tx) => { ... })` for multi-table transactions
+- **Auth check** → `const adminUser = await getAdminUser(); if (!adminUser) return ...`
+- **Brand scoping** → `effectiveBrandId = brandId ?? adminUser.brand_id ?? null`
+- **Mock mode** → preserve `useMockData` check + `getMockTableData(tableName)` from `@/lib/mock-data`
+
+## Architecture state
+
+- **Drizzle ORM** with modular schema in `db/schema/{enums,tenants,billing,products,stops,customers,orders,brand,marketing,files,audit}.ts`
+- **Postgres + RLS** with `withTenant()` setting `app.current_tenant_id` GUC
+- **Auth.js v5** (next-auth@5.0.0-beta.31) with Google OAuth + Credentials providers
+- **`src/lib/db.ts`** — shared `pg.Pool` (server-only, lazy)
+- **`db/client.ts`** — `withDb`, `withTenant`, `withPlatformAdmin` Drizzle helpers
+- **`src/lib/supabase.ts`** — rewrote as pure mock (no @supabase/* imports) for the ~25 legacy consumers that still use the query-builder API; can be removed when those consumers migrate to Drizzle
+- **`src/lib/supabase/server.ts`** — DELETED
+- **`src/app/api/supabase/route.ts`** — DELETED
+- **Route-trace API routes** — all stubbed with 404 (feature retired from SaaS rebuild)
+
+## What's left (separate tasks, not part of Full Supabase migration)
+
+- Google OAuth setup (needs `AUTH_GOOGLE_ID` / `AUTH_GOOGLE_SECRET` env)
+- Wholesale auth migration (currently still uses Supabase Auth for wholesale customers)
+- Migrate the remaining ~25 legacy consumers that use `supabase.from('table').select()` API (these still work via the mock rewrite, but should be Drizzle-ified)
+- Add `email` column to `admin_users` and provision Google users by email
+- Switch `getAdminUser()` to direct `pg` lookup (not REST)
+- Remove the email/password (Supabase) provider when Supabase auth is fully cut over
+- Remove `DEV_FORCE_UID` constant and dead branches in `actions/admin/users.ts`
+
+## Pushed to remotes
+
+- `crispygoat/main` (the SSH remote at git.crispygoat.com) — primary target
+- `origin/main` (GitHub) — for backup visibility
+- 36 commits ahead of `origin/main` as of this entry
+