[建议 / Feature] Mode (plan/edit) should be separate from autonomy (ask/edit/full access)

提交前确认 · Pre-submission checklist

• 我已搜索过现有 issue，确认这不是重复提议 / I searched existing issues and confirmed this isn't a duplicate.
• 我已阅读 CONTRIBUTING.md / I've read CONTRIBUTING.md.

问题类别 · Category

对话 / Agent 交互 · Agent chat / interaction

涉及的 Agent 框架 · Agent framework

ZCode Agent（自研）

使用场景 · Use case

When I use "plan mode" the agent sometimes gets blocked, e.g. "grep" is not available in plan mode.

I want the agent to be able to perform any action to achieve a plan.

"What commands are allowed?" is one decision. "What is the agent doing?" is another decision. These should be 2 different options in the app.

建议方案 · Proposal

The current selection of: 1) Ask before changes, 2) Edit automatically, 3) Plan mode, 4) Full access

Should be separated into A) Mode, and B) Autonomy, with options:

Mode:

1. Edit
2. Plan

Autonomy:

1. Ask before changes
2. Edit automatically
3. Full access

预期价值 · Expected value

I can have "Plan Mode" with "Full Access".

你认为的优先级 · Your perceived priority

高 · High

你使用的 ZCode 版本 / 环境 · ZCode version / environment

ZCode Desktop App version 3.11.2 Linux Ubuntu

补充材料 · Additional context

Many other agents follow this pattern, e.g. Claude Code, Visual Studio Code Agent, Factory Droid, Unity AI Assistant, etc.

Start with CONTRIBUTING.md, then locate the ZCode Desktop App entry points that define the current Plan mode and autonomy choices. Done means exposing Mode and Autonomy as separate controls so Plan mode can be combined with Full access, while preserving the existing Ask before changes and Edit automatically options.