[godronus]

Summary

Stacked on #93 (base feat/db-interface): fastedge::db::kv, Database KV over gcore:db/kv-sync.

• wit submodule → FastEdge-wit feat/db-interface-kv; generate! adds kv-types + kv-sync
• src/db.rs: db::kv re-exports the generated types (Database, Op, OpResult, SetOptions, KvValue, Error, ...), plus Default for SetOptions (always write, no expiry)
• examples/http/wasi/db_kv: per-user rate limit and a visit counter in one atomic batch. Same keys, limits and responses as the JS examples/db-kv.

Decisions needed

#	Decision	Proposal
1	API surface	Generated types as they are, with no wrapper (like db::sql)
2	Async	None: Rust stays on kv-sync

Tested: doctests compile; the example runs on fastedge-run against Upstash (requests 1-5 → 200, 6th → 429).

Related: #93 (base), G-Core/FastEdge-wit#10, G-Core/FastEdge#661, G-Core/FastEdge-sdk-js#158