feat: quiet mode for CLI runs

[vaporwavie]

Fixes: #6999

This PR adds the -q | --quiet argument, which aims to provide a cleaner output to the user for CLI runs, suppressing tool calls and focusing on the actual response from the agent.

Usage

# shorthand
opencode run -q "list the files in this directory"

# verbalized
opencode run --quiet "list the files in this directory"

# specifying a model
opencode run -m "opencode/gemini-3-flash" "list the files in this directory" --quiet

# wrapped around a function
function ask() {
  if [ -z "$1" ]; then
    echo "Usage: ask <question>"
    return 1
  fi

  local model="opencode/gemini-3-flash"
  opencode run -m $model "$*" -q | glow -
}

Demo

Dry Run

opencode-quiet-mode.mov

Scenario	Preview
Before
After

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

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[github-actions]

Hey! Your PR title feat(cli/run): quiet mode doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

Thanks for your contribution!

This PR doesn't have a linked issue. All PRs must reference an existing issue.

Please:

1. Open an issue describing the bug/feature (if one doesn't exist)
2. Add Fixes #<number> or Closes #<number> to this PR description

See CONTRIBUTING.md for details.