chore(deps): autoupdate (needs claude fix)

[github-actions]

The dependency autoupdater failed during builds-and-checks.

Run log: https://github.com/dudko-dev/agent-web/actions/runs/34663307994

A Claude session has been dispatched to push fixes onto this branch
so the following commands all exit 0:

  npm run typecheck
  npm run format:check
  npm run build
  npm test

Claude will leave a status comment on this PR when it finishes.
The Claude workflow re-dispatches PR-checks once it is done, so the
checks below reflect its pushed fixes.

[claude]

Status: fixed, commit pushed.

• Failing command: `npm run build` (tsup). `typecheck`, `format:check`, and `test` were already green on this branch.
• Root cause: the autoupdate bumped `typescript` from `^5.9.3` to `^7.0.2`. TypeScript 7.0.2 is now npm's `latest` tag (the new native-port release), but tsup's bundled `rollup-plugin-dts` (tsup is already at its newest release, 8.5.1) reads `ts.sys.useCaseSensitiveFileNames` while generating `.d.ts` files, and that property comes back `undefined` against the TS7 package — crashing the DTS build step with `TypeError: Cannot read properties of undefined (reading 'useCaseSensitiveFileNames')`.
• Fix: pinned `typescript` back to `^5.9.3` in `package.json`/`package-lock.json` (a compatibility revert, not a change to product logic). Left every other autoupdated dependency (`ai`, `zod`, `@ai-sdk/`, `@browser-ai/`, `@mlc-ai/web-llm`) as the autoupdater bumped them — those all typechecked and built fine.
• Verified locally (all exit 0): `npm run typecheck`, `npm run format:check`, `npm run build`, `npm test` (96/96 tests passing).
• Pushed: commit `46e5a43` to `chore/autoupdate-34663307994`.

Once tsup/rollup-plugin-dts ship TS7 support, the typescript devDependency can be re-bumped.