feat: Generate a JSON index

[YDX-2147483647]

https://deploy-preview-68--clreq-gap-typst.netlify.app/index.json

TODO: Add links to workarounds. Done.

TODO: 兼容旧ID。 已完成。

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Pull Request Overview

This PR adds functionality to generate a JSON index from the Typst document, making structured data about sections, priorities, and linked issues/PRs available for programmatic access via dist/index.json.

Key changes:

• New script generate-json-index.ts that queries the Typst document and generates a structured JSON index
• Export of IssueMeta and PullMeta interfaces for reuse across scripts
• Integration of JSON index generation into the build pipeline

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
scripts/generate-json-index.ts	New script that parses Typst document structure and generates JSON index with sections, priorities, and issue/PR links
typ/prioritization.typ	Adds metadata output to make priority levels queryable via Typst query command
scripts/check_issues.ts	Exports IssueMeta and PullMeta interfaces for use in other scripts
package.json	Integrates JSON index generation into the build script pipeline
main.typ	Adds <addendum> label to enable query boundary detection

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Pull request overview

Copilot reviewed 9 out of 9 changed files in this pull request and generated 2 comments.

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[YDX-2147483647]

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