Support slash commands mid-sentence and multiple slash commands per prompt

Feature Description

Please support invoking skills/commands when / is typed anywhere in the prompt composer, not only when the prompt starts with /, and allow multiple slash-command invocations in a single prompt.

Current behavior

In the Command Code desktop app, slash suggestions appear when the slash is at the beginning of the input. If I first write prose and then type /, or include a second / later in the same prompt, the command/skill picker does not appear. This makes it difficult to write natural instructions and compose several skills in one request.

Desired behavior

• Typing / after existing text opens the same asynchronously loaded slash menu at the caret.
• Selecting a command inserts or activates it at that position without discarding the surrounding prompt.
• Each slash occurrence can be resolved independently, so one prompt can contain multiple commands/skills.
• Keep the current start-of-prompt behavior and keyboard navigation.
• Preserve ordinary text such as URLs, filesystem paths, and escaped slashes.

Example

Audit this interface with /impeccable, check keyboard access with /accessibility, then browse the docs with /browser.

This would match the inline slash workflow I use in Codex today.

Use Case

Natural-language requests often introduce a skill after the goal is stated. Requiring the user to move every command to the first character breaks the flow of the request, makes multi-step work awkward, and can make skills appear unavailable.

Inline invocation would reduce prompt restructuring, let users compose workflows naturally, and make Command Code a smoother replacement for Codex-style slash skill calls.

Additional Context

Observed on Command Code desktop v0.1.8 on macOS. In a Discord discussion, the Command Code team/community clarified that the current slash menu is surfaced at the start of input and recommended filing a GitHub feature request for mid-prompt skill invocation.

This request covers both related behaviors: (1) invoking a slash command after existing text and (2) using multiple slash commands in one prompt. It is a usability/feature request and does not require changing the existing command catalog.

How important is this to you?

Important for my workflow

首先跟踪桌面端 prompt composer 以及现有的 prompt 开头 slash-menu 行为。检查异步加载的建议、插入光标位置、键盘导航、URLs、paths 和转义斜杠是如何处理的；完成的标准是 inline 命令和多个命令都能正常工作，不会丢失周围文本，同时保持现有行为不变。