feat: add kilo for slack gitlab support

[dennismeister93]

Summary

• Add GitLab repository support for Kilo for Slack bot
• Include GitLab projects alongside GitHub repositories in Slack bot system prompt context
• Extend spawn_cloud_agent tool to accept gitlabProject parameter for GitLab Cloud Agent sessions
• Support GitLab OAuth and PAT tokens for Cloud Agent session spawning via Slack
• Handle self-hosted GitLab instances and nested group paths (e.g., group/subgroup/project)

Notes

• GitLab sessions use gitUrl/gitToken params (existing Cloud Agent API fields) instead of githubRepo/githubToken
• Token retrieval leverages existing helpers: getGitLabTokenForOrganization, getGitLabTokenForUser, buildGitLabCloneUrl
• The spawn_cloud_agent tool schema now requires only prompt (not githubRepo); exactly one of githubRepo or gitlabProject is validated in code
• Owners can have both GitHub AND GitLab connected — the bot presents both sets of repos and the LLM selects the correct platform

Testing / Reproduce Steps

Prerequisites

1. A Slack workspace with the Kilo bot installed
2. Both GitHub and GitLab integrations connected to the same owner (user or org)
3. ngrok tunnel (or any other) to expose localhost to Slack (ngrok http 3000)
4. Environment variables: SLACK_CLIENT_ID, SLACK_CLIENT_SECRET, SLACK_SIGNING_SECRET, APP_URL_OVERRIDE

Steps

1. Connect GitLab to your account/org at /integrations/gitlab (via OAuth or PAT)
2. Ensure Slack is connected at /integrations/slack
3. @mention the bot in Slack: @KiloBot what repos do I have?
4. Verify: Response should list both GitHub repositories AND GitLab projects
5. Ask the bot to work on a GitLab project: @KiloBot fix the README in group/project
6. Verify: Bot should spawn a Cloud Agent session using gitUrl/gitToken (check logs for [SlackBot] GitLab session - project:)
7. Ask about a GitHub repo to confirm the existing path still works: @KiloBot update the docs in owner/repo
8. Verify: Bot should spawn using githubRepo/githubToken as before

[kilo-code-bot]

Code Review Summary

Status: 1 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
src/lib/slack-bot.ts	313	Missing GitLab project access boundary enforcement before clone URL construction

Other Observations (not in diff)

Issues found in unchanged code that cannot receive inline comments:

File	Line	Issue
None	N/A	None

Files Reviewed (3 files)

• src/lib/slack-bot.ts - 1 issue
• src/lib/slack-bot/gitlab-repository-context.ts - 0 issues
• src/lib/slack-bot/gitlab-repository-context.test.ts - 0 issues

Fix these issues in Kilo Cloud