feat: YOLO Mode - Skip All Permission Prompts (CLI + Desktop)

[mguttmann]

Summary

Comprehensive implementation of YOLO mode that allows users to skip all permission prompts. This addresses multiple community requests (#8463, #7928, #1813) with a complete solution for both CLI and Desktop.

Features

CLI Support

Method	Usage
Flag	opencode --yolo or opencode --dangerously-skip-permissions
Environment Variable	OPENCODE_YOLO=true opencode
Commands	opencode yolo status / enable / disable

# Check current status
$ opencode yolo status
YOLO mode: ENABLED (saved in config)
Config: /Users/.../.config/opencode/config.json

# Enable permanently
$ opencode yolo enable
YOLO mode ENABLED - saved to config
Warning: All permission prompts will be skipped!

# Disable
$ opencode yolo disable
YOLO mode disabled - removed from config

Desktop App Support

New Settings → Danger Zone tab with:

• This Session Only - Toggle for current session (resets on restart)
• Always Enabled - Persists to ~/.config/opencode/config.json
• Clear visual indicators showing active state
• Live switching without app restart
• Warning messaging about the risks

Config File Support

{
  "yolo": true
}

Works in both project-level opencode.json and global ~/.config/opencode/config.json.

Technical Implementation

• Yolo Module (packages/opencode/src/yolo/index.ts): Centralized state management
• Permission Bypass (permission/next.ts): Auto-approves in PermissionNext.ask() when YOLO enabled
• API Endpoints: GET/POST /config/yolo for runtime control
• Safety: Explicit deny rules are still respected even in YOLO mode

Files Changed

File	Changes
packages/opencode/src/yolo/index.ts	New module for YOLO state management
packages/opencode/src/cli/cmd/yolo.ts	New CLI commands
packages/opencode/src/permission/next.ts	Auto-approve logic
packages/opencode/src/server/routes/config.ts	API endpoints
packages/opencode/src/flag/flag.ts	OPENCODE_YOLO env var
packages/opencode/src/config/config.ts	Config schema
packages/opencode/src/index.ts	CLI flag + command registration
packages/app/src/components/dialog-settings.tsx	Desktop UI

Testing

Manually tested:

• [x] CLI --yolo flag
• [x] CLI opencode yolo commands
• [x] Environment variable
• [x] Desktop UI toggles
• [x] Config persistence
• [x] Live toggle without restart
• [x] Permission prompts appear when disabled
• [x] Permission prompts skipped when enabled
• [x] Switching between session-only and permanent modes

Related Issues

This PR provides a comprehensive solution that addresses:

• #8463: --dangerously-skip-permissions flag ✅
• #7928: Runtime permission toggle ✅
• #1813: YOLO mode / auto-accept ✅

Closes #9070