feat(integrations): add connectionScope (workspace|user) to OAuth flow

apps/server/src/core/integration/oauth/oauth.service.ts

@@ -149,15 +149,29 @@ export class OAuthService {
       ? new Date(Date.now() + tokenResponse.expires_in * 1000)
       : null;
 
-    const connection = await this.connectionRepo.upsert({
-      integrationId,
-      userId,
-      workspaceId,
-      accessToken: encryptedAccessToken,
-      refreshToken: encryptedRefreshToken,
-      tokenExpiresAt,
-      scopes: tokenResponse.scope ?? null,
-    });
+    const connectionScope =
+      provider.definition.oauth?.connectionScope ?? 'user';
+
+    const connection =
+      connectionScope === 'workspace'
+        ? await this.connectionRepo.upsertWorkspaceConnection({
+            integrationId,
+            userId,
+            workspaceId,
+            accessToken: encryptedAccessToken,
+            refreshToken: encryptedRefreshToken,
+            tokenExpiresAt,
+            scopes: tokenResponse.scope ?? null,
+          })
+        : await this.connectionRepo.upsert({
+            integrationId,
+            userId,
+            workspaceId,
+            accessToken: encryptedAccessToken,
+            refreshToken: encryptedRefreshToken,
+            tokenExpiresAt,
+            scopes: tokenResponse.scope ?? null,
+          });
 
     if (provider.onConnected) {
       await provider.onConnected({

apps/server/src/core/integration/registry/integration-provider.interface.ts

@@ -4,6 +4,9 @@ export type OAuthConfig = {
   authUrl: string;
   tokenUrl: string;
   scopes: string[];
+  // 'workspace' = one shared bot/app connection per integration (Slack model);
+  // 'user' (default) = each Docmost user OAuths separately and gets their own token (Linear, Jira, GitHub model)
+  connectionScope?: 'workspace' | 'user';
 };
 
 export type UnfurlPattern = {

apps/server/src/core/integration/repos/integration-connection.repo.ts

@@ -95,6 +95,60 @@ export class IntegrationConnectionRepo {
       .executeTakeFirstOrThrow();
   }
 
+  async upsertWorkspaceConnection(
+    input: {
+      integrationId: string;
+      userId: string;
+      workspaceId: string;
+      accessToken: string;
+      refreshToken?: string | null;
+      tokenExpiresAt?: Date | null;
+      scopes?: string | null;
+    },
+    trx?: KyselyTransaction,
+  ): Promise<IntegrationConnection> {
+    const db = dbOrTx(this.db, trx);
+
+    const existing = await this.findWorkspaceConnection(input.integrationId, trx);
+    if (existing) {
+      return this.update(
+        existing.id,
+        {
+          accessToken: input.accessToken,
+          refreshToken: input.refreshToken ?? null,
+          tokenExpiresAt: input.tokenExpiresAt ?? null,
+          scopes: input.scopes ?? null,
+          userId: input.userId,
+        },
+        trx,
+      );
+    }
+
+    // Clear any stale non-workspace row for the same (integration, user) to
+    // avoid the uq(integration_id, user_id) constraint blocking the insert.
+    await db
+      .deleteFrom('integrationConnections')
+      .where('integrationId', '=', input.integrationId)
+      .where('userId', '=', input.userId)
+      .where('kind', '!=', 'workspace')
+      .execute();
+
+    return db
+      .insertInto('integrationConnections')
+      .values({
+        integrationId: input.integrationId,
+        userId: input.userId,
+        workspaceId: input.workspaceId,
+        accessToken: input.accessToken,
+        refreshToken: input.refreshToken ?? null,
+        tokenExpiresAt: input.tokenExpiresAt ?? null,
+        scopes: input.scopes ?? null,
+        kind: 'workspace',
+      })
+      .returningAll()
+      .executeTakeFirstOrThrow();
+  }
+
   async update(
     connectionId: string,
     data: UpdatableIntegrationConnection,