fix: parse dates with years before 100 correctly

[spokodev]

Problem

The date / timestamp / timestamptz parser in packages/pglite/src/types.ts is parse: (x) => new Date(x). PostgreSQL emits a year below 100 as e.g. 0050-06-15 12:30:00+00, which is not strict ISO 8601 (space separator, two-digit offset), so new Date falls back to its legacy parser, which maps the year into the 1900s or returns garbage:

const db = new PGlite()
;(await db.query(`select '0050-06-15 12:30:00+00'::timestamptz as v`)).rows[0].v  // 1950-06-15  (should be 0050)
;(await db.query(`select '0099-06-15 12:30:00+00'::timestamptz as v`)).rows[0].v  // 1999-06-15  (should be 0099)
;(await db.query(`select '0001-06-15 12:30:00+00'::timestamptz as v`)).rows[0].v  // 2015-01-06  (garbage)

Any date / timestamp / timestamptz with a year of 1 to 99 is silently corrupted (off by ~1900 years, or Invalid Date).

Fix

Normalize the text to ISO 8601 before new Date: replace the date/time space with T, and expand a two-digit timezone offset +HH to +HH:00. The ISO parser then handles years below 100 correctly. Years 100 and above produce identical output to before.

Test

Added timestamptz 1184 before year 100 to packages/pglite/tests/types.test.ts. Verified via parseType that years 1–99 now parse to the correct year, and that years ≥ 100 and the date (1082) / timestamp (1114) cases are unchanged.

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