System theme doesn't apply Ghostty transparency on load (v1.1.10) #8480

Description

The system theme does not inherit/apply terminal transparency settings from Ghostty on startup. However, a custom theme with "background": { "dark": "none", "light": "none" } works correctly.

Environment

• OpenCode version: 1.1.10
• Terminal: Ghostty
• OS: macOS (Darwin 25.2.0)

Ghostty config

background-opacity = 0.5
background-blur-radius = 20

OpenCode config

{
  "theme": "system",
  "$schema": "https://opencode.ai/config.json"
}

Steps to reproduce

1. Configure Ghostty with background-opacity = 0.5
2. Set OpenCode theme to "system" in ~/.config/opencode/opencode.json
3. Set "theme": "system" in ~/.local/state/opencode/kv.json
4. Launch opencode
5. Observe: Background is opaque, not transparent

Expected behavior

The system theme should inherit Ghostty's transparency settings and display a transparent background.

Actual behavior

The background is opaque/solid black despite Ghostty having transparency configured.

Workaround

Using a custom theme with explicit "none" backgrounds works:

{
  "theme": {
    "background": { "light": "none", "dark": "none" },
    "backgroundPanel": { "light": "none", "dark": "none" },
    "backgroundElement": { "light": "none", "dark": "none" }
  }
}

Related issues

• System them in macos with ghostty doesn't apply opacity #4027 - System theme in macOS with Ghostty doesn't apply opacity
• System Theme no longer works after v1.0.0 #3688 - System Theme no longer works after v1.0.0