Enhance role-check system with stricter checks (#15392)

## Overview

This PR strengthens our permission system by introducing more granular
role-based access control across the platform.

## Changes

### New Permissions Added
- **Applications** - Control who can install and manage applications
- **Layouts** - Control who can customize page layouts and UI structure
- **AI** - Control access to AI features and agents
- **Upload File** - Separate permission for file uploads
- **Download File** - Separate permission for file downloads (frontend
visibility)

### Security Enhancements
- Implemented whitelist-based validation for workspace field updates
- Added explicit permission guards to core entity resolvers
- Enhanced ESLint rule to enforce permission checks on all mutations
- Created `CustomPermissionGuard` and `NoPermissionGuard` for better
code documentation

### Affected Components
- Core entity resolvers: webhooks, files, domains, applications,
layouts, postgres credentials
- Workspace update mutations now use whitelist validation
- Settings UI updated with new permission controls

### Developer Experience
- ESLint now catches missing permission guards during development
- Explicit guard markers make permission requirements clear in code
review
- Comprehensive test coverage for new permission logic

## Testing
- ✅ All TypeScript type checks pass
- ✅ ESLint validation passes
- ✅ New permission guards properly enforced
- ✅ Frontend UI displays new permissions correctly

## Migration Notes
Existing workspaces will need to assign the new permissions to roles as
needed. By default, all new permissions are set to `false` for non-admin
roles.

packages/twenty-server/src/database/typeorm/core/migrations/common/1762351626807-viewVisibility.ts

@@ -0,0 +1,37 @@
+import { type MigrationInterface, type QueryRunner } from 'typeorm';
+
+export class ViewVisibility1762351626807 implements MigrationInterface {
+  name = 'ViewVisibility1762351626807';
+
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `CREATE TYPE "core"."view_visibility_enum" AS ENUM('WORKSPACE', 'UNLISTED')`,
+    );
+    await queryRunner.query(
+      `ALTER TABLE "core"."view" ADD "visibility" "core"."view_visibility_enum" NOT NULL DEFAULT 'WORKSPACE'`,
+    );
+    await queryRunner.query(
+      `ALTER TABLE "core"."view" ADD "createdByUserWorkspaceId" uuid`,
+    );
+    await queryRunner.query(
+      `CREATE INDEX "IDX_VIEW_VISIBILITY" ON "core"."view" ("visibility") `,
+    );
+    await queryRunner.query(
+      `ALTER TABLE "core"."view" ADD CONSTRAINT "FK_394132f681ecbffa8ac912d1e5f" FOREIGN KEY ("createdByUserWorkspaceId") REFERENCES "core"."userWorkspace"("id") ON DELETE SET NULL ON UPDATE NO ACTION`,
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      `ALTER TABLE "core"."view" DROP CONSTRAINT "FK_394132f681ecbffa8ac912d1e5f"`,
+    );
+    await queryRunner.query(`DROP INDEX "core"."IDX_VIEW_VISIBILITY"`);
+    await queryRunner.query(
+      `ALTER TABLE "core"."view" DROP COLUMN "createdByUserWorkspaceId"`,
+    );
+    await queryRunner.query(
+      `ALTER TABLE "core"."view" DROP COLUMN "visibility"`,
+    );
+    await queryRunner.query(`DROP TYPE "core"."view_visibility_enum"`);
+  }
+}