[FEATURE]: Simplify LLM provider setup with OmniRoute integration

[afonsoft]

Feature hasn't been suggested before.

• I have verified this feature I'm about to request hasn't been suggested before.

Describe the enhancement you want to request

I use a few different LLM providers and switching between them is a pain. Every time I want to try a new one or change providers, I have to dig into the config file and edit it manually. Sometimes I get the syntax wrong and have to fix it.

What would make my life easier is if OpenCode could just pull provider info automatically so I don't have to touch config files at all. OmniRoute does this - it handles the provider setup so users don't have to. Adding support for it would save me a lot of hassle.

The main benefit is just not having to edit config files every time I want to try something different.

[afonsoft]

Technical Details (for reference)

Implementation Approach

1. CLI Setup Wizard

opencode config omniroute

Interactive prompts for base URL, API key, and combo selection.

2. Web UI Configuration Panel
New route: /settings/omniroute with form fields and combo dropdown.

3. Auto-Discovery

• GET /api/combos - List user combos
• GET /api/combos/auto - List auto-routing combos

4. Combo Switcher
Quick combo switcher in conversation header for changing combos mid-session.

Key Files

• packages/web/src/components/Share.tsx - WebSocket connection
• packages/web/src/components/ComboSwitcher.tsx - New component for combo selection
• packages/cli/src/commands/handlers/config/omniroute.ts - CLI wizard

Environment Variables (fallback)

OMNIROUTE_BASE_URL=https://omniroute.afonsoft.dev
OMNIROUTE_API_KEY=sk-...
OMNIROUTE_DEFAULT_COMBO=auto

Reference: https://github.com/diegosouzapw/OmniRoute

[github-actions]

This issue doesn't fully meet our contributing guidelines.

What needs to be fixed:

• The feature request template requires a verification checkbox confirming you have checked that this feature hasn't been suggested before — that field is missing here.
• The title should start with [FEATURE]: (capital letters and colon) to match the feature request template.
• The description reads as AI-generated (highly structured, corporate phrasing, no personal context about your actual use case or setup). Please replace it with a genuine description of the problem you are experiencing.

Please edit this issue to address the above within 2 hours, or it will be automatically closed.

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This issue might be a duplicate of existing issues. Please check:

• [Feature] Simplify LLM provider setup with OmniRoute integration #40505: Identical title and content, same author — appears to be an accidental duplicate of this very issue.
• [FEATURE]: Add Omniroute provider with dynamic model discovery #25947: "[FEATURE]: Add Omniroute provider with dynamic model discovery" (closed) — requests first-class OmniRoute/Omniroute support with dynamic model discovery, covering the same core ask.
• [FEATURE]: Router presets — named, switchable configurations for multi-provider routers (OmniRoute, OpenRouter, LiteLLM, 9Router) #34711: "[FEATURE]: Router presets — named, switchable configurations for multi-provider routers (OmniRoute, OpenRouter, LiteLLM, 9Router)" — overlapping OmniRoute integration request.

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