SQL mole runtime notices

The game self-hosts unmodified native ESM, WASM, and data files from
`@electric-sql/pglite` **0.5.8**. Its embedded engine identifies itself as
PostgreSQL **18.3**, compiled with Emscripten **3.1.74**. The game-specific
worker and grading code is separate from these upstream artifacts.

`PGLITE-LICENSE.txt` is the npm package's verbatim Apache 2.0 license; it also
covers bundled `pglite-utils`. `POSTGRES-LICENSE.txt` is the pinned PostgreSQL
fork's copyright and permission notice. The remaining files preserve the
licenses/notices for the bundled protocol code, async-mutex, tinytar, the tsup
ESM shim, ICU, Emscripten and its libc/C++/compiler runtime, zlib, libxml2,
libxslt, Snowball, and PostgreSQL's regular-expression implementation.

The ICU notice is extracted verbatim from the exact shipped `pglite.data`
bundle, including ICU's incorporated third-party notices. The libxml2 dict
and list notices are verbatim leading source comments, accompanying its
main Copyright file. Other notice files are copied in full without edits.

[`manifest.json`](manifest.json) records each notice's upstream source,
byte count, and SHA-256. [`../vendor/manifest.json`](../vendor/manifest.json)
records every shipped runtime asset. `node scripts/sql-assets.mjs --check`
verifies both manifests and compares the ICU notice to the package bytes.
No build or runtime step fetches these notices from the network.

Version provenance: PGlite release commit
`ae182ff8bd5ba4acb887d6c925d607a1498aa0b5`, with PostgreSQL submodule commit
`b133782cd759f08b3aeb263b80a963b39c7b7af1`. The latter's
[build script](https://github.com/electric-sql/postgres-pglite/blob/b133782cd759f08b3aeb263b80a963b39c7b7af1/build-pglite.sh)
and [builder configuration](https://github.com/electric-sql/postgres-pglite/blob/b133782cd759f08b3aeb263b80a963b39c7b7af1/pglite/builder/Dockerfile)
identify core library versions. Optional extension archives (including
pgcrypto, uuid-ossp, and PostGIS) are not shipped or enabled. The core build
disables OpenSSL and excludes those extensions' library exports.