build: bump TypeScript to 7.0.2

[MounirDhahri]

Description

TypeScript 7 (the native port) is now the latest release on npm. This bumps the pinned typescript dev dependency 5.9.2 → 7.0.2 for its much faster type-checking.

Kept intentionally minimal — only the typescript version changes. This PR is effectively an experiment gated on CI:

• yarn tsc (type-check) must pass under the TS7 native compiler.
• yarn lint must pass — i.e. @typescript-eslint/parser 5.57 must still read TS7 (it version-warns but shouldn't hard-fail; CI confirms).

If either breaks, the fix would be a larger @typescript-eslint upgrade, which I'd raise separately rather than fold in here.

PR Checklist

• Dependency bump only; no app code or UI change

🤖 Generated with Claude Code

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[artsyit]

	Warnings
⚠️	Changes were made to package.json, but not to yarn.lock. Perhaps you need to run yarn install?

Generated by 🚫 dangerJS against ab8a653

[MounirDhahri]

Closing — TypeScript 7 isn't installable on the current toolchain yet. yarn install fails during the fetch step:

YN0001: Error: typescript@patch:typescript@npm%3A7.0.2#optional!builtin<compat/typescript>:
ENOENT: no such file or directory, lstat '.../node_modules/typescript/lib/_tsc.js'

Yarn 4.10's built-in compat/typescript patch expects typescript/lib/_tsc.js, which the TS7 native port removed — so the patch can't apply and the install errors out before type-checking ever runs. This is a Yarn↔TS7 incompatibility, not a code issue.

Keeping TypeScript at 5.9.2 for now. Worth revisiting once Yarn ships a TS7-compatible builtin patch (or we bump the Yarn version).

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