Add repository_customizations table and routes

[intentionally-left-nil]

To continue with the work of allowing per-repository settings (AI model, pr reviews etc) this commit creates a table to store the data. It also adds the routes needed to update the data, and wires it into the GithubRepositoryCustomizationsPreview components.

No callsites consume this data yet, except for the admin page.

Summary

• Fixed updateIntegrationMetadataForOwner to use proper atomic sql operations
• Added repository_customizations table
• Changed GitHubRepositoryCustomizationsPreview.tsx to be a stateful component, owning its data and connecting to the backend
• Added the react code to the integrations view, under the PER_REPO_SETTINGS feature flag

Verification

Visited the /integrations page, updated the values, saw that it was persisted. The orgs page was harder since I didn't have an integration, but it should still work the same

Screen.Recording.2026-09-08.at.12.07.04.PM.mov

[kilo-code-bot]

Code Review Summary

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
apps/web/src/lib/integrations/db/platform-integrations.ts	1033	Omitting integrationId updates every matching integration; GitLab callers still omit it

Files Reviewed (22 files)

• ENVIRONMENT.md
• apps/storybook/stories/GitHubRepositoryCustomizations.stories.tsx
• apps/web/src/components/integrations/GitHubIntegrationDetails.tsx
• apps/web/src/components/integrations/GitHubRepositoryCustomizationsPreview.test.ts
• apps/web/src/components/integrations/GitHubRepositoryCustomizationsPreview.tsx
• apps/web/src/components/integrations/IntegrationDetailPage.tsx
• apps/web/src/components/integrations/OrganizationGitHubInstallations.tsx
• apps/web/src/lib/config.server.ts
• apps/web/src/lib/integrations/db/platform-integrations.test.ts
• apps/web/src/lib/integrations/db/platform-integrations.ts - 1 issue
• apps/web/src/lib/integrations/github-apps-service.test.ts
• apps/web/src/lib/integrations/github-apps-service.ts
• apps/web/src/lib/integrations/github-repository-settings.test.ts
• apps/web/src/lib/integrations/github-repository-settings.ts
• apps/web/src/routers/github-apps-router.test.ts
• apps/web/src/routers/github-apps-router.ts
• packages/db/src/migrations/0239_repository_customizations.sql
• packages/db/src/migrations/meta/0239_snapshot.json
• packages/db/src/migrations/meta/_journal.json
• packages/db/src/schema-types.ts
• packages/db/src/schema.test.ts
• packages/db/src/schema.ts

Fix these issues in Kilo Cloud

---

_{Reviewed by grok-4.6 · Input: 474.6K · Output: 31.9K · Cached: 1.4M}

_{Review guidance: REVIEW.md from base branch main}

[pandemicsyn]

lgtm, couple of minor things from the bot