release: arktype 2.2.5 + dependents

[ssalbdivad]

Bumps all publishable packages and documents the changes merged since 2.2.4:

• preserve escaped backslashes in regex literals (fix(type): preserve escaped backslash in regex string literals #1634, @spokodev)
• fix recursive discriminated unions referenced from a Record (Fix recursive aliases with Record references #1641, @xianjianlf2)
• prevent a crash validating unions of object arrays (fix(schema): prevent crash validating unions of object arrays #1638, @xianjianlf2)
• merge index-derived props with a declared key of the same name (fix(schema): merge index-derived props with a declared key of the same name #1659)
• preserve parameter labels when a type.fn implementation annotates an optional param (Fix label names when internalSignature has optional params #1615, @aswinsvijay)

#1634 changes behavior for regex literals containing \\: "/\\\\d/" previously compiled to the digit class \d, and now matches a literal backslash followed by d, the same as the equivalent RegExp instance. The changelog includes a migration note.

package	from	to
arktype	2.2.4	2.2.5
@ark/schema	0.56.3	0.56.4
@ark/util	0.56.3	0.56.4
@ark/fs	0.56.3	0.56.4
@ark/attest	0.56.4	0.56.5
arkregex	0.0.9	0.0.10
@ark/json-schema	0.0.8	0.0.9
@ark/fast-check	0.0.15	0.0.16

• pnpm tsc: clean
• pnpm test: 1748 passing, including the registry version test against the new @ark/util version
• prettier --check on the changelog
• Regex changelog example run against source

🤖 Generated with Claude Code

[pullfrog]

✅ No new issues found.

Reviewed changes

• Version bumps — all eight publishable package.json files advance one patch: arktype 2.2.4 → 2.2.5, @ark/schema/@ark/util/@ark/fs 0.56.3 → 0.56.4, @ark/attest 0.56.4 → 0.56.5, arkregex 0.0.9 → 0.0.10, @ark/json-schema 0.0.8 → 0.0.9, @ark/fast-check 0.0.15 → 0.0.16. The util/schema/fs trio stays locked together and @ark/attest remains exactly one patch ahead, per the release convention.
• ark/util/registry.ts — arkUtilVersion synced to 0.56.4, matching @ark/util's package version (asserted by ark/util/__tests__/registry.test.ts).
• ark/type/CHANGELOG.md — adds the 2.2.5 section documenting the five fixes merged since 2.2.4 (#1634, #1641, #1638, #1659, #1615), including the migration note for the regex-literal behavior change.

I verified the changelog is complete and accurate: git log between the 2.2.4 release and this branch shows exactly the five commits the notes describe, all internal deps use workspace:* so no range edits are needed, and no stale old-version strings remain anywhere outside CHANGELOG.md. I also ran the regex example from the notes against source — type("/\\\\d/") now matches a literal backslash followed by d (and not 5), while type("/\\d/") still matches a digit, matching both the example comments and the migration advice.

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