feat: add script for miner stats snapshot

[dewabisma]

Summary

Simple script for getting miner stats and convert to csv.

---

Note

Low Risk
Offline tooling and snapshot data only; no production runtime, auth, or on-chain logic changes.

Overview
Adds a small testnet miner stats workflow under testnet_data_snapshots/: fetch live data from Quantus GraphQL, keep JSON snapshots, and export spreadsheets for reward analysis.

fetch_current_miners.py POSTs the minerStats query (account_stats with total_mined_blocks > 0, sorted by blocks) to https://sub2.quantus.com/v1/graphql and writes planck_miners.json by default. Supports --endpoint, --output, and --export-csv to chain into the exporter.

export_miners_to_csv.py scans *_miners.json in the same folder and writes matching .csv files with id, totalMinedBlocks, and totalRewards.

TESTNET_DATA_README.md documents past testnets (resonance_network, schrodinger, dirac) and the current planck_miners.json snapshot, plus the two commands above.

The PR also checks in a fresh planck_miners.json snapshot and CSV exports for dirac, planck, resonance_network, and schrodinger miners (large static data additions).

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GraphQL query omits row limit

Medium Severity

The account_stats query in MINER_STATS_QUERY has no limit or pagination, so the Hasura-style endpoint may return only its default maximum rows. The script treats that partial page as a full snapshot, which can undercount miners and skew reward analysis without any warning.

 

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