Replace third-party owners with administrators

Migrate business and security owners into a shared administrators list across GraphQL, MCP, CLI, n8n, and the console.

Signed-off-by: Sacha Al Himdani <sacha@probo.com>

pkg/coredata/migrations/20260727T100635Z.sql

@@ -0,0 +1,70 @@
+-- Copyright (c) 2025-2026 Probo Inc <hello@probo.com>.
+--
+-- Permission is hereby granted, free of charge, to any person obtaining a copy
+-- of this software and associated documentation files (the "Software"), to deal
+-- in the Software without restriction, including without limitation the rights
+-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-- copies of the Software, and to permit persons to whom the Software is
+-- furnished to do so, subject to the following conditions:
+--
+-- The above copyright notice and this permission notice shall be included in
+-- all copies or substantial portions of the Software.
+--
+-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+-- SOFTWARE.
+
+CREATE TABLE third_party_administrators (
+    third_party_id            text                     NOT NULL,
+    administrator_profile_id  text                     NOT NULL,
+    tenant_id                 text                     NOT NULL,
+    organization_id           text                     NOT NULL,
+    created_at                timestamp with time zone NOT NULL,
+    updated_at                timestamp with time zone NOT NULL,
+    PRIMARY KEY (third_party_id, administrator_profile_id),
+    FOREIGN KEY (third_party_id) REFERENCES third_parties(id) ON UPDATE CASCADE ON DELETE CASCADE,
+    FOREIGN KEY (administrator_profile_id) REFERENCES iam_membership_profiles(id) ON UPDATE CASCADE ON DELETE RESTRICT
+);
+
+-- Migrate existing business and security owners into administrators (dedupe).
+INSERT INTO third_party_administrators (
+    third_party_id,
+    administrator_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+)
+SELECT
+    id,
+    business_owner_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+FROM third_parties
+WHERE business_owner_profile_id IS NOT NULL
+ON CONFLICT (third_party_id, administrator_profile_id) DO NOTHING;
+
+INSERT INTO third_party_administrators (
+    third_party_id,
+    administrator_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+)
+SELECT
+    id,
+    security_owner_profile_id,
+    tenant_id,
+    organization_id,
+    created_at,
+    updated_at
+FROM third_parties
+WHERE security_owner_profile_id IS NOT NULL
+ON CONFLICT (third_party_id, administrator_profile_id) DO NOTHING;