Problem / Use case

The OpenCode CLI supports a --variant flag for controlling model reasoning effort (e.g., --variant high, --variant max, --variant minimal), but Ralph TUI's OpenCode plugin does not currently expose this option.

Current state

• Ralph TUI can set provider/model and agent type for OpenCode
• The --variant flag is not passed through to the CLI
• No configuration option for variants

Desired state

• Support --variant flag via config file: [agents.options] variant = "high"
• Support --variant via CLI: --model anthropic/claude-4-5-sonnet --variant high
• Pass --variant to opencode run command when configured

Example usage

Config

[agents.options]
provider = "anthropic"
model = "claude-4-5-sonnet"
variant = "high"

CLI

ralph-tui run --agent opencode --model anthropic/claude-4-5-sonnet --variant high

Proposed solution

Config Format
[agents.options]
provider = "anthropic"
model = "claude-4-5-sonnet"
variant = "high"

CLI Usage
ralph-tui run --agent opencode --model anthropic/claude-4-5-sonnet --variant high

Implementation
1. Add variant property to OpenCodeAgentPlugin class
2. Initialize from config in initialize() method
3. Pass --variant flag in buildArgs() when configured

Example
# Config: variant = "high"
# CLI: --model anthropic/claude-4-5-sonnet
# Result: opencode run --model anthropic/claude-4-5-sonnet --variant high

Alternatives considered

No response

Additional context

No response