Define wasmeld:kv/store@0.1.0 with get, set, and delete operations.
Expose explicit invalid-key, value-too-large, and operation-failed variants so components can handle bounded storage failures without relying on host-specific errors.
- define versioned service and clock WIT contracts
- enforce import allowlists, fuel, epoch, memory, I/O, and mailbox limits
- keep one Store and Component Instance resident per serial Actor
- add echo, counter, fault, spin, and capability probe components
- cover lifecycle, concurrency, sandbox, and fault recovery behavior