chore(deps): update dependency type-flag to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
type-flag	^3.0.0 → ^4.0.0

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Release Notes

privatenumber/type-flag (type-flag)

v4.5.0

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Features

• export isStandardSchema and StandardSchemaV1 (#​69) (6e0c469)

v4.4.0

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Bug Fixes

• repair type-flag skill frontmatter and document custom parsers & schemas (#​68) (2ea91ea)

Features

• support Standard Schema as flag types (#​67) (f7f7a8c)

v4.3.0

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Features

• add positional arguments helper (#​64) (877e48d)
• export PositionalArguments type (7fa23d3)

v4.2.0

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Bug Fixes

• support single-character flag names (#​60) (2381d39), closes #​27

Features

• ship agent skill for AI coding assistants (7d047a3)

v4.1.0

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Features

• support --no- prefix for boolean flag negation (#​52) (4e08612)

v4.0.3

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Bug Fixes

• types: allow 3-parameter callbacks for IgnoreFunction (457a827)

v4.0.2

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Bug Fixes

• inference when generic parameter uses Readonly in array type (b667ba1)

v4.0.1

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Bug Fixes

• inference when generic parameter uses Readonly (d310a43)

v4.0.0

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Bug Fixes

• disallow accepting aliases with -- (b581920)

chore

• raise minimum supported Node.js version to v18 LTS (d328656)

Features

• support single-character flags (#​27) (cef5b5d)

Performance Improvements

• argv-iterator: replace regex with indexOf for delimiter detection (01f8b05)
• remove array reverse (47b031b)
• remove custom isArray (13332d7)
• remove extra closure (87c2914)
• remove JSON.stringify (ba76cb8)

Reverts

• Flags to be a generic (61c1db1)

BREAKING CHANGES

• no longer supports the edge-case --a where a is an alias
• Minimum supported Node.js version is v18

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