fix(server): scope platform accounts to desktop clients

server/migrations/20260402140000_create_media_publisher_tables.up.sql

@@ -48,9 +48,6 @@ CREATE TABLE platform_accounts (
     deleted_at     TIMESTAMPTZ
 );
 
-CREATE UNIQUE INDEX uk_platform_accounts_identity_active
-    ON platform_accounts(tenant_id, platform_id, platform_uid)
-    WHERE deleted_at IS NULL;
 CREATE INDEX idx_platform_accounts_tenant_platform ON platform_accounts(tenant_id, platform_id, status, created_at DESC);
 
 CREATE TABLE publish_batches (

server/migrations/20260421100010_add_desktop_fields_to_platform_accounts.up.sql

@@ -47,8 +47,6 @@ ALTER TABLE platform_accounts
     ALTER COLUMN health SET NOT NULL,
     ALTER COLUMN sync_version SET NOT NULL;
 
-DROP INDEX IF EXISTS uk_platform_accounts_identity_active;
-
 CREATE UNIQUE INDEX IF NOT EXISTS uniq_platform_accounts_desktop_id
     ON platform_accounts (desktop_id);
 

server/migrations/20260506120000_scope_platform_accounts_to_desktop_client.down.sql

@@ -0,0 +1,6 @@
+DROP INDEX IF EXISTS idx_platform_accounts_client_id;
+DROP INDEX IF EXISTS uniq_platform_accounts_workspace_identity_active;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uk_platform_accounts_identity_active
+    ON platform_accounts (tenant_id, platform_id, platform_uid)
+    WHERE deleted_at IS NULL;

server/migrations/20260506120000_scope_platform_accounts_to_desktop_client.up.sql

@@ -0,0 +1,10 @@
+DROP INDEX IF EXISTS uk_platform_accounts_identity_active;
+DROP INDEX IF EXISTS uniq_platform_accounts_workspace_identity_active;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uniq_platform_accounts_workspace_identity_active
+    ON platform_accounts (workspace_id, client_id, platform_id, platform_uid)
+    WHERE deleted_at IS NULL;
+
+CREATE INDEX IF NOT EXISTS idx_platform_accounts_client_id
+    ON platform_accounts (client_id)
+    WHERE deleted_at IS NULL;