feat(admin): add custom LLM management panel

[kilo-code-bot]

Summary

• Add admin panel at /admin/custom-llms to manage entries in the custom_llm2 table (add, edit, delete)
• Uses Monaco Editor for JSON editing of the definition field with syntax highlighting
• Zod validation against CustomLlmDefinitionSchema is performed client-side before saving
• tRPC router with list, upsert, and delete procedures behind adminProcedure

Verification

• tsgo --noEmit — 0 type errors
• oxfmt --list-different . — formatting passes

Visual Changes

N/A (new admin page, no changes to existing UI)

Reviewer Notes

• The custom_llm2 table already exists in the schema; no migration needed.
• The upsert approach allows both creating new entries and updating existing ones by public_id.
• Monaco Editor (@monaco-editor/react) was already a project dependency.
• The definition field contains sensitive data (api_key) — this is an admin-only panel behind adminProcedure.

[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)

No new issues in the incremental diff.

Other Observations (not in diff)

Issues found in unchanged code that cannot receive inline comments:

File	Line	Issue
src/routers/admin/custom-llm-router.ts	14	Prefix validation still blocks deleting or repairing legacy custom_llm2 rows whose public_id lacks kilo-internal/.

Files Reviewed (1 file)

• src/app/admin/custom-llms/page.tsx - 0 issues

Fix these issues in Kilo Cloud

---

_{Reviewed by gpt-5.4-20260305 · 119,746 tokens}