fix(auth): provision the better-auth 1.7 columns sys_team / sys_team_member / sys_two_factor were missing (#3624)

better-auth 1.7.0-rc.1 added fields to three models that the platform objects
never provisioned and `auth-schema-config.ts` never mapped. An unmapped field
keeps its camelCase name, so the adapter emitted columns no table had:

  team.memberCount             -> sys_team.member_count
  teamMember.membershipKey     -> sys_team_member.membership_key
  twoFactor.failedVerificationCount / lockedUntil
                               -> sys_two_factor.failed_verification_count / locked_until

The team pair broke org creation outright. The organization plugin's team
sub-feature is on by default, so POST /api/v1/auth/organization/create
auto-creates a default team, and that insert died with `table sys_team has no
column named memberCount` AFTER the organization row had already committed —
HTTP 500 on top of a half-created org.

The two-factor pair broke the 2FA lockout path the same way: better-auth
guard-increments `failedVerificationCount` on each wrong code and stamps
`lockedUntil` past the threshold, so a wrong code 500'd instead of being
counted. All four columns are better-auth's own state — provisioned, readable,
never written from the ObjectStack side. Existing environments pick them up
through the driver's additive schema sync; no data migration is needed.

Adds `better-auth-schema-parity.test.ts`: every column the installed
better-auth version can write must exist on the platform object backing it,
across the auth manager's whole model surface. The ADR-0092 D7 guard only ever
caught COLLISIONS between our extension fields and better-auth's, so a bump
adding a brand-new field passed the build and failed at runtime — twice now,
counting the 1.7 `oauthAccessToken.authorizationCodeId` regression. The
two-factor gap above is what the new gate found on its first run.

Adds an end-to-end dogfood test that drives the real org-create route and
reads the default team back; reverting either half of the fix reproduces the
reported 500 verbatim.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UYLC8TfjzHGwatNxZKdX7H

Author: claude

.changeset/better-auth-team-member-count.md

@@ -0,0 +1,43 @@
+---
+"@objectstack/platform-objects": patch
+"@objectstack/plugin-auth": patch
+---
+
+fix(auth): provision the better-auth 1.7 columns `sys_team` / `sys_team_member` / `sys_two_factor` were missing (#3624)
+
+better-auth 1.7.0-rc.1 added fields to three models that the platform objects
+never provisioned and `auth-schema-config.ts` never mapped. Because an unmapped
+field keeps its camelCase name, the adapter emitted columns no table had:
+
+| model | field | column now provisioned |
+|:---|:---|:---|
+| `team` | `memberCount` | `sys_team.member_count` |
+| `teamMember` | `membershipKey` | `sys_team_member.membership_key` |
+| `twoFactor` | `failedVerificationCount` / `lockedUntil` | `sys_two_factor.failed_verification_count` / `locked_until` |
+
+The team pair broke org creation outright. The organization plugin's team
+sub-feature is on by default, so `POST /api/v1/auth/organization/create`
+auto-creates a default team — and that insert died with `table sys_team has no
+column named memberCount` *after* the organization row had already committed.
+Callers got an HTTP 500 on top of a half-created org: a real org row with no
+default team behind it. Every multi-org deployment's create-org flow hit this.
+
+The two-factor pair broke the 2FA lockout path the same way: better-auth
+guard-increments `failedVerificationCount` on each wrong code and stamps
+`lockedUntil` past the threshold, so a wrong code 500'd instead of being
+counted. All four columns are better-auth's own state — provisioned, readable,
+and never written from the ObjectStack side.
+
+Existing environments pick the columns up through the driver's additive schema
+sync; no data migration is needed. `member_count` backfills to 0 and
+better-auth's own `syncTeamMemberCount` reconciles it on the next membership
+change, and `membership_key` stays null on pre-upgrade rows, which better-auth
+tolerates by falling back to the `(team_id, user_id)` pair.
+
+A new drift gate (`better-auth-schema-parity.test.ts`) now asserts that every
+column the installed better-auth version can write exists on the platform
+object backing it, across the auth manager's whole model surface. The ADR-0092
+D7 guard only ever caught *collisions* between our extension fields and
+better-auth's, so a bump that adds a brand-new field passed the build and failed
+at runtime — twice now, counting the 1.7 `oauthAccessToken.authorizationCodeId`
+regression. The next one fails the build instead.

packages/platform-objects/src/identity/sys-team-member.object.ts

@@ -99,11 +99,33 @@ export const SysTeamMember = ObjectSchema.create({
       label: 'User',
       required: true,
     }),
+
+    // better-auth's own single-column uniqueness boundary for a membership
+    // (`teamMember.membershipKey`, added alongside `team.memberCount` in
+    // 1.7.0-rc.1): a SHA-256 digest of [teamId, userId]. The organization
+    // plugin writes it on every membership insert and relies on the UNIQUE
+    // constraint to collapse concurrent adds — it catches the insert error
+    // and re-reads the winner. Declared `input: false, returned: false`
+    // upstream, so it never crosses the API boundary in either direction.
+    // Nullable so legacy rows provisioned before the upgrade stay valid;
+    // better-auth falls back to the (team_id, user_id) pair when the key
+    // lookup misses. See #3624.
+    membership_key: Field.text({
+      label: 'Membership Key',
+      required: false,
+      readonly: true,
+      maxLength: 255,
+      description: 'Derived membership digest maintained by better-auth; do not write directly.',
+    }),
   },
-  
+
   indexes: [
     { fields: ['team_id', 'user_id'], unique: true },
     { fields: ['user_id'] },
+    // UNIQUE mirrors better-auth's own declaration — the constraint is what
+    // makes its concurrent-add recovery work. Nullable columns admit repeated
+    // NULLs on sqlite / postgres / mysql, so pre-upgrade rows are unaffected.
+    { fields: ['membership_key'], unique: true },
   ],
 
   enable: {

packages/platform-objects/src/identity/sys-team.object.ts

@@ -140,6 +140,26 @@ export const SysTeam = ObjectSchema.create({
     }),
 
     // ── System ───────────────────────────────────────────────────
+    // better-auth's own durable seat counter (`team.memberCount`, added in
+    // 1.7.0-rc.1). It is NOT a derived convenience column: the organization
+    // plugin reserves a seat by guard-incrementing this row BEFORE inserting
+    // the membership row (`reserveTeamSeat` → `incrementOne`), so it is the
+    // aggregate capacity boundary `maximumMembersPerTeam` is enforced against.
+    // better-auth maintains it end to end (create = 0, add = +1, remove = −1,
+    // plus a `syncTeamMemberCount` reconcile) and strips it from every API
+    // response — nothing on the ObjectStack side may write it. Provisioned
+    // here (and mapped in `AUTH_TEAM_SCHEMA`) because better-auth writes the
+    // column on every team insert; without it, `organization/create` 500s the
+    // moment teams are enabled. See #3624.
+    member_count: Field.number({
+      label: 'Member Count',
+      required: false,
+      defaultValue: 0,
+      readonly: true,
+      group: 'System',
+      description: 'Seat counter maintained by better-auth; do not write directly.',
+    }),
+
     id: Field.text({
       label: 'Team ID',
       required: true,

packages/platform-objects/src/identity/sys-two-factor.object.ts

@@ -164,6 +164,31 @@ export const SysTwoFactor = ObjectSchema.create({
       defaultValue: true,
       description: 'Whether the enrollment was confirmed with a valid TOTP code (managed by better-auth)',
     }),
+
+    // better-auth 1.7's 2FA lockout state (`failedVerificationCount` /
+    // `lockedUntil`). Every wrong code guard-increments the counter and, once
+    // it crosses `maxFailedAttempts`, stamps `lockedUntil`; a correct code
+    // resets both. Distinct from `sys_user.failed_login_count` / `locked_until`
+    // — those are ObjectStack's own password-stage counters (ADR-0069 D2) and
+    // better-auth is oblivious to them. Declared `input: false, returned:
+    // false` upstream, so neither crosses the API boundary. Found by the
+    // parity gate in plugin-auth while closing #3624: same failure shape as
+    // `team.memberCount` — an unprovisioned column better-auth writes on the
+    // failure path, so a wrong 2FA code 500'd instead of being counted.
+    failed_verification_count: Field.number({
+      label: 'Failed Verification Count',
+      required: false,
+      defaultValue: 0,
+      readonly: true,
+      description: 'Consecutive failed 2FA verifications; reset on success. Maintained by better-auth.',
+    }),
+
+    locked_until: Field.datetime({
+      label: 'Locked Until',
+      required: false,
+      readonly: true,
+      description: 'Set when failed 2FA verifications cross the lockout threshold. Maintained by better-auth.',
+    }),
   },
 
   indexes: [

packages/plugins/plugin-auth/src/auth-schema-config.ts

@@ -252,13 +252,23 @@ export const AUTH_ORG_SESSION_FIELDS = {
  * | camelCase (better-auth) | snake_case (ObjectStack) |
  * |:------------------------|:-------------------------|
  * | organizationId          | organization_id          |
+ * | memberCount             | member_count             |
  * | createdAt               | created_at               |
  * | updatedAt               | updated_at               |
+ *
+ * better-auth 1.7.0-rc.1 added `memberCount` — the durable seat counter the
+ * plugin guard-increments to reserve capacity before inserting a membership
+ * row. It is written on EVERY team insert (`memberCount: 0`), so leaving it
+ * unmapped made the adapter emit a camelCase `memberCount` column that
+ * `sys_team` never provisioned: `organization/create` auto-creates a default
+ * team when `teams.enabled`, so org creation 500'd after the org row had
+ * already committed. See #3624.
  */
 export const AUTH_TEAM_SCHEMA = {
   modelName: SystemObjectName.TEAM, // 'sys_team'
   fields: {
     organizationId: 'organization_id',
+    memberCount: 'member_count',
     createdAt: 'created_at',
     updatedAt: 'updated_at',
   },
@@ -275,13 +285,21 @@ export const AUTH_TEAM_SCHEMA = {
  * |:------------------------|:-------------------------|
  * | teamId                  | team_id                  |
  * | userId                  | user_id                  |
+ * | membershipKey           | membership_key           |
  * | createdAt               | created_at               |
+ *
+ * `membershipKey` landed with `team.memberCount` in 1.7.0-rc.1: a SHA-256
+ * digest of [teamId, userId] the plugin writes on every membership insert and
+ * whose UNIQUE constraint collapses concurrent adds. Same failure mode as
+ * `memberCount` if left unmapped — a camelCase column no table provisions —
+ * so add-team-member 500s. See #3624.
  */
 export const AUTH_TEAM_MEMBER_SCHEMA = {
   modelName: SystemObjectName.TEAM_MEMBER, // 'sys_team_member'
   fields: {
     teamId: 'team_id',
     userId: 'user_id',
+    membershipKey: 'membership_key',
     createdAt: 'created_at',
   },
 } as const;
@@ -293,16 +311,27 @@ export const AUTH_TEAM_MEMBER_SCHEMA = {
 /**
  * better-auth Two-Factor plugin `twoFactor` model mapping.
  *
- * | camelCase (better-auth) | snake_case (ObjectStack) |
- * |:------------------------|:-------------------------|
- * | backupCodes             | backup_codes             |
- * | userId                  | user_id                  |
+ * | camelCase (better-auth) | snake_case (ObjectStack)  |
+ * |:------------------------|:--------------------------|
+ * | backupCodes             | backup_codes              |
+ * | userId                  | user_id                   |
+ * | failedVerificationCount | failed_verification_count |
+ * | lockedUntil             | locked_until              |
+ *
+ * 1.7 added the lockout pair `failedVerificationCount` / `lockedUntil`: the
+ * verify endpoint guard-increments the counter on every wrong code and stamps
+ * `lockedUntil` once it crosses `maxFailedAttempts`. Unmapped, those writes
+ * addressed camelCase columns `sys_two_factor` never provisioned, so a wrong
+ * 2FA code 500'd on the failure path instead of being counted. Found by
+ * `better-auth-schema-parity.test.ts` while closing #3624.
  */
 export const AUTH_TWO_FACTOR_SCHEMA = {
   modelName: SystemObjectName.TWO_FACTOR, // 'sys_two_factor'
   fields: {
     backupCodes: 'backup_codes',
     userId: 'user_id',
+    failedVerificationCount: 'failed_verification_count',
+    lockedUntil: 'locked_until',
   },
 } as const;
 

packages/plugins/plugin-auth/src/better-auth-schema-parity.test.ts

@@ -0,0 +1,169 @@
+// Copyright (c) 2026 ObjectStack. Licensed under the Apache-2.0 license.
+
+/**
+ * Drift gate: every column the INSTALLED better-auth version can write must
+ * exist on the platform object that backs it.
+ *
+ * ## Why this is a separate guard from ADR-0092 D7
+ *
+ * `managed-extension-fields.test.ts` derives better-auth's surface from
+ * `getAuthTables()` too, but it answers the opposite question: *does one of
+ * OUR extension fields collide with one of THEIRS?* A collision is a field
+ * present on both sides. This gate catches the other half — a field present
+ * only on better-auth's side, which D7 waves straight through because there is
+ * nothing to collide with. A dependency bump that ADDS a model field therefore
+ * built clean and failed at runtime, twice:
+ *
+ *  - 1.7's `oauthAccessToken.authorizationCodeId` → 500 at the token endpoint,
+ *    which broke platform SSO for every environment. Closed by the per-plugin
+ *    `oauth-provider-schema-parity.test.ts`, whose check this file generalizes.
+ *  - 1.7.0-rc.1's `team.memberCount` / `teamMember.membershipKey` → 500 on
+ *    `organization/create` (the plugin auto-creates a default team when
+ *    `teams.enabled`, which is the auth-manager default), leaving a committed
+ *    org row with no team behind it. #3624.
+ *
+ * Same failure shape both times, in a model nobody had written a per-plugin
+ * gate for — so this covers the auth manager's WHOLE model surface at once
+ * rather than one more plugin.
+ *
+ * ## What it checks
+ *
+ * `getAuthTables()` merges the core models with every plugin's schema and
+ * applies our `fields` overrides as `fieldName`, exactly as better-auth's
+ * adapter resolves a column: `field.fieldName ?? key`. Two ways to fail:
+ *
+ *  1. **Unmapped model** — better-auth would write a table no platform object
+ *     provisions.
+ *  2. **Unprovisioned column** — the resolved column is absent from the
+ *     object's fields. Note that an UNMAPPED camelCase field fails here too
+ *     (it resolves to `memberCount`, not `member_count`), so one assertion
+ *     catches both "forgot the snake_case mapping" and "forgot the column".
+ *
+ * `@better-auth/oauth-provider` is deliberately absent: it ships as its own
+ * package with its own pinned version and already has the dedicated gate named
+ * above. `@better-auth/sso` / `@better-auth/scim` are absent because they
+ * expose no `schema` option at all — their mapping is applied at the adapter
+ * layer (see `objectql-adapter.ts`), so `getAuthTables()` cannot report the
+ * columns they actually write.
+ */
+
+import { describe, expect, it } from 'vitest';
+import { getAuthTables } from 'better-auth/db';
+import { organization, twoFactor, admin } from 'better-auth/plugins';
+import { phoneNumber } from 'better-auth/plugins/phone-number';
+import { jwt } from 'better-auth/plugins/jwt';
+import { deviceAuthorization } from 'better-auth/plugins/device-authorization';
+import {
+  SysAccount,
+  SysDeviceCode,
+  SysInvitation,
+  SysJwks,
+  SysMember,
+  SysOrganization,
+  SysSession,
+  SysTeam,
+  SysTeamMember,
+  SysTwoFactor,
+  SysUser,
+  SysVerification,
+} from '@objectstack/platform-objects/identity';
+
+import {
+  AUTH_ACCOUNT_CONFIG,
+  AUTH_SESSION_CONFIG,
+  AUTH_USER_CONFIG,
+  AUTH_VERIFICATION_CONFIG,
+  buildAdminPluginSchema,
+  buildDeviceAuthorizationPluginSchema,
+  buildJwtPluginSchema,
+  buildOrganizationPluginSchema,
+  buildPhoneNumberPluginSchema,
+  buildTwoFactorPluginSchema,
+} from './auth-schema-config.js';
+
+type PlatformObject = { name: string; fields?: Record<string, unknown> };
+
+/** Object name → the platform object that provisions its physical table. */
+const PLATFORM_OBJECTS: Record<string, PlatformObject> = Object.fromEntries(
+  ([
+    SysUser, SysSession, SysAccount, SysVerification,
+    SysOrganization, SysMember, SysInvitation, SysTeam, SysTeamMember,
+    SysTwoFactor, SysDeviceCode, SysJwks,
+  ] as unknown as PlatformObject[]).map((o) => [o.name, o]),
+);
+
+/**
+ * The model surface the auth manager actually configures — same option shapes
+ * it passes in `auth-manager.ts`, so the tables this derives are the tables a
+ * booted environment gets. Plugins that are feature-flagged off in some
+ * deployments are still included: the column has to exist before the flag can
+ * be turned on.
+ */
+function authTables() {
+  return getAuthTables({
+    user: AUTH_USER_CONFIG,
+    session: AUTH_SESSION_CONFIG,
+    account: AUTH_ACCOUNT_CONFIG,
+    verification: AUTH_VERIFICATION_CONFIG,
+    plugins: [
+      // `teams.enabled` mirrors the auth-manager default. Without it the team
+      // models drop out of the surface entirely and this gate would have gone
+      // green through #3624 — the exact hole being closed.
+      organization({ teams: { enabled: true }, schema: buildOrganizationPluginSchema() }),
+      twoFactor({ schema: buildTwoFactorPluginSchema() }),
+      admin({ schema: buildAdminPluginSchema() }),
+      phoneNumber({ schema: buildPhoneNumberPluginSchema() }),
+      jwt({ schema: buildJwtPluginSchema() }),
+      deviceAuthorization({ schema: buildDeviceAuthorizationPluginSchema() }),
+    ],
+  } as never) as Record<
+    string,
+    { modelName?: string; fields?: Record<string, { fieldName?: string }> }
+  >;
+}
+
+describe('better-auth schema ↔ platform-objects parity (#3624)', () => {
+  const tables = authTables();
+
+  it('derives a non-empty surface (the gate must not pass vacuously)', () => {
+    expect(Object.keys(tables).length).toBeGreaterThan(0);
+    // Teams are the regression under test: if the org plugin ever stops
+    // reporting them, every team assertion below would silently vanish.
+    expect(Object.keys(tables)).toContain('team');
+    expect(Object.keys(tables)).toContain('teamMember');
+  });
+
+  it('every better-auth model maps to a platform object', () => {
+    const unmapped = Object.entries(tables)
+      .map(([model, table]) => ({ model, table: table.modelName ?? model }))
+      .filter(({ table }) => !PLATFORM_OBJECTS[table])
+      .map(({ model, table }) => `${model} → ${table}`);
+    expect(
+      unmapped,
+      'better-auth would write tables no platform object provisions: '
+      + `${unmapped.join(', ')} — declare the object in packages/platform-objects/src/identity/ `
+      + 'and map it via a modelName in auth-schema-config.ts (or, if the model is intentionally '
+      + 'unused, drop the plugin from this gate with a note).',
+    ).toEqual([]);
+  });
+
+  for (const [model, table] of Object.entries(tables)) {
+    const tableName = table.modelName ?? model;
+    it(`every ${model} column exists on ${tableName}`, () => {
+      const object = PLATFORM_OBJECTS[tableName];
+      if (!object) return; // reported by the mapping assertion above
+      // better-auth always owns the primary key, whatever the object declares.
+      const declared = new Set(['id', ...Object.keys(object.fields ?? {})]);
+      const missing = Object.entries(table.fields ?? {})
+        .map(([key, field]) => field.fieldName ?? key)
+        .filter((column) => !declared.has(column));
+      expect(
+        missing,
+        `columns better-auth can write to ${tableName} but the platform object does not declare: `
+        + `${missing.join(', ')} — add the field(s) to packages/platform-objects/src/identity/ and, `
+        + 'when camelCase ≠ snake_case, a fieldName mapping in auth-schema-config.ts. A camelCase '
+        + 'name here means the mapping is missing, not just the column.',
+      ).toEqual([]);
+    });
+  }
+});