Proposal: Open Sourcing Grant of a Validator Indexer (PQS)

Development Fund Proposal Submission

Proposal file: Link to the proposal added in this PR (e.g., /proposals/your-proposal-name.md)

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Summary

Briefly describe the proposal and the value it delivers to the Canton ecosystem (2–3 sentences).

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Checklist

• [X] Proposal file added under /proposals/
• [X] Milestones and funding amounts defined
• [X] Acceptance criteria included
• [X] Alignment with Canton priorities described

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Notes for Reviewers

(Add anything the Tech & Ops Committee should pay attention to.)