Add Spin support to libSQL again

Description

This issue does not include a description.

Contributor guide

Tech stack

cwasmrust

Domain

databasebackend

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

4

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-2 days

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

fresh

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

unclear

Prerequisites

C programmingWebAssembly knowledgeFamiliarity with libSQL internals

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

20

Research direction

The issue body is empty, so the first step is to understand what 'Spin support' entails by researching previous discussions or PRs (possibly closed). Review the libSQL source code, especially how it handles external integrations. Investigate the Fermyon Spin SDK and its compatibility with libSQL's C API. Propose a clear implementation plan with specific files to modify.