Test sqlfu against real celld

[mmkal]

Summary

• runs a sqlfu inline Durable Object app in real celld v0.1.0
• proves Worker routing, migrations, bound inserts, typed query modes, and per-name SQLite isolation
• adds a dedicated CI job using pinned celld, MinIO server, and MinIO client binaries

Runtime scope

celld currently supports module Workers and SQLite-backed Durable Objects. Its compatibility reference lists D1 as planned, so this PR does not claim or approximate D1 support.

Before / after

Before: sqlfu Durable Object coverage ran through Miniflare, leaving compatibility with the new self-hosted celld runtime unproven.

After, the same public sqlfu surface runs inside celld:

POST /alpha/posts -> {"rowsAffected":1}
GET  /alpha/posts -> [{"slug":"hello","title":"Hello from celld"}]
GET  /beta/posts  -> [{"slug":"other","title":"Another cell"}]

The distinct responses prove the Worker routes to separate named Durable Object cells, while each cell applies the inline sqlfu migration and executes generated-mode query wrappers against its own SQLite storage.

Verification

• real celld compatibility spec
• existing Durable Object suite: 14 tests
• sqlfu typecheck
• ESLint and formatting checks

Coding agent session: 019fdb5d-9f22-7c90-b4ec-7ee4a9ec3b57

Package size — packed 280.6 kB (no change)

Package size

	main	this PR	Δ
packed	280.6 kB	280.6 kB	0
unpacked	1.12 MB	1.12 MB	0
files	226	226	0

dist/vendor/*.js bundles

	main	this PR	Δ
vendor/sha256.js	4.3 kB	4.3 kB	0
vendor/sql-formatter/*.js	94.5 kB	94.5 kB	0
vendor/sqlfu-sqlite-parser/*.js	17.2 kB	17.2 kB	0
vendor/standard-schema/*.js	2.8 kB	2.8 kB	0
vendor/typesql/*.js	134.9 kB	134.9 kB	0

Measured with npm pack --dry-run --json on sqlfu (0.0.0-dev on main vs 0.0.0-dev on this PR).

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/sqlfu@154

commit: 868c579