feat: expose duration and token metric outputs

[PunGrumpy]

Description

Expose execution duration and granular token usage outputs, and enhance the GitHub Actions step summary:

• Expose duration-ms output with the elapsed run duration in milliseconds.
• Expose total-tokens, input-tokens, and output-tokens outputs for programmatic usage tracking and budgeting.
• Display input tokens, output tokens, cached tokens, and total tokens in the job summary table.
• Remove an em dash from the timeout warning message in src/input.ts.
• Synchronize package description and reference documentation.

Related Issues

None

Checklist

• I've reviewed my code
• I've written tests (skip if not applicable, e.g. .github/–only changes)
• I've added a changeset when the change affects the published action or release notes (skip for .github/–only community or template updates)
• I've updated the docs, if necessary

Screenshots (if applicable)

Additional Notes

Includes patch changeset .changeset/expose-metric-outputs.md and recompiled dist/index.mjs.

[changeset-bot]

🦋 Changeset detected

Latest commit: d5950f7

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@pungrumpy/cursor-action	Patch

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Project	Deployment	Actions	Updated
cursor-action	Ready	Preview	Sep 4, 2026 3:31am UTC

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📥 Commits

Reviewing files that changed from the base of the PR and between bb3afa7 and d5950f7.

⛔ Files ignored due to path filters (1)

• dist/index.mjs is excluded by !**/dist/**

📒 Files selected for processing (9)

• .changeset/expose-metric-outputs.md
• README.md
• __tests__/output.test.ts
• action.yml
• docs/content/reference.mdx
• package.json
• src/input.ts
• src/output.ts
• src/types.ts

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