Dual-dialect store (SQLite via modernc.org, MySQL via go-sql-driver,
both pure Go) with order-tolerant start/complete upserts, filtered and
paginated listing, and aggregate queries (per-day, top domains, query
types, statuses, duration percentiles, top clients). Sender gains
optional EXPLOREDNS_WEBHOOK_TOKEN bearer auth; a round-trip test pins
receiver structs byte-compatible with the sender payloads.
Note: go directive moves to 1.25.0, required by modernc.org/sqlite.
CI reads the version from go.mod so GOTOOLCHAIN=local stays satisfied.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>