fix(MM-143): address code review feedback for Phase 1
- Issue 1: Remove package-lock.json from tracking (npm lockfile committed instead of pnpm-lock.yaml). Add apps/identity-wallet/package-lock.json to .gitignore and remove from git tracking. pnpm-lock.yaml generation deferred to Phase 3 when pnpm is added to Nix dev shell.
- Issue 2: Update @sveltejs/vite-plugin-svelte from ^3.1.0 to ^5.0.3 as specified in plan. Resolves Svelte 5 build warnings about version mismatch.
Verification:
- cargo build --workspace: SUCCESS
- cargo clippy --workspace -- -D warnings: SUCCESS
- cargo fmt --all --check: SUCCESS