docs: add 'copilot' as primary target name in docs and action.yml

[danielmeppiel]

Summary

Align apm-action docs and action.yml with microsoft/apm#228 — copilot is now the recommended user-facing target name for the GitHub Copilot / Cursor / Codex / Gemini output format. vscode remains valid as an alias.

Changes

• action.yml: Target input description lists copilot first
• README.md: Examples use target: 'copilot', inputs table shows copilot as primary

No behavior changes — the action passes the target string through to apm pack --target, and APM CLI handles the alias mapping.

[Copilot]

Pull request overview

Updates the user-facing documentation and Action metadata to recommend copilot as the primary target name (with vscode remaining a valid alias), aligning with the updated APM CLI guidance.

Changes:

• Update action.yml input description to list copilot first.
• Update README.md examples and inputs table to use/list copilot as the primary target.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
action.yml	Updates the target input description to recommend copilot first.
README.md	Switches examples and the inputs table to target: 'copilot'.

Comments suppressed due to low confidence (2)

README.md:46

• The README “Pack mode” workflow snippet is invalid YAML now: it has two with: blocks in a single step, and the actions/upload-artifact@v4 step appears to have been removed. Reintroduce the upload-artifact step (with its own - uses:) so the second with: belongs to that step.

This issue also appears on line 72 of the same file.

```yaml
- uses: microsoft/apm-action@v1
  id: pack
  with:
    pack: 'true'
    target: 'copilot'
  with:
    name: agent-bundle
    path: ${{ steps.pack.outputs.bundle-path }}

**README.md:80**
* The “Cross-job artifact workflow” snippet has the same YAML issue: after setting `target: 'copilot'`, the next `with:` block is indented as if it belongs to the same step, but it should be under an `- uses: actions/upload-artifact@v4` step. As written, the example won’t parse/copy-paste correctly.

  - uses: microsoft/apm-action@v1
    id: pack
    with:
      pack: 'true'
      target: 'copilot'
    with:
      name: agent-bundle
      path: ${{ steps.pack.outputs.bundle-path }}

</details>



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