feat: upgrade Rspack to 2.2.1 and matching swc toolchain

[dgaponov]

What

package	before	after
@rspack/core	2.1.2	2.2.1
@rspack/dev-server	^2.1.0	^2.2.1
@swc/core	1.15.43	1.16.1
@swc/plugin-transform-imports	12.14.1	13.0.0
@rsdoctor/{rspack,webpack}-plugin	1.6.1 (exact)	^1.6.4

Also dropped the @rsdoctor/* entries from pnpm.overrides.

Why

Rspack 2.2.x embeds swc_core 77, so the swc toolchain has to move with it. Per the swc plugin compat range for 3012:

• rspack 2.2.0–2.2.3 ↔ @swc/core 1.16.0–1.16.1 ↔ @swc/plugin-transform-imports 13.0.0

That is why @swc/core is pinned at 1.16.1 and not the newer 1.16.2 (already on swc_core 78), and why the wasm plugin is 13.0.0 and not 14.0.0 — a mismatched wasm plugin fails to load at build time.

The remaining rspack-adjacent deps (@rspack/plugin-react-refresh, ts-checker-rspack-plugin, rspack-manifest-plugin, worker-rspack-loader, swc-loader, @swc/cli) are already on caret ranges resolving to their latest versions, and all declare @rspack/core peers that accept ^2 — no manifest change needed.

Rsdoctor

Bumped to 1.6.4 alongside Rspack, and relaxed from an exact pin:

• The pnpm.overrides entries were no-ops — nothing in the tree depends on rsdoctor transitively, only our own direct deps, and pnpm.overrides is not published to consumers.
• Lockstep between the two plugins is guaranteed by rsdoctor itself: each plugin pins @rsdoctor/core|sdk|graph|types|utils to its own exact version.
• An exact pin in dependencies of a published library forces a duplicate install on any consumer that also depends on rsdoctor.

Reviewer notes

• The public rsdoctorConfig type in src/common/models/index.ts is derived from the RsdoctorRspackPlugin constructor options, so a future rsdoctor minor can shift app-builder's emitted .d.ts. Inside this repo the lockfile pins it; happy to restore the exact pin if that trade-off isn't wanted.
• The @statoscope/webpack-stats-extension-package-info peer warning (unmet peer @rspack/core@^1.0.0: found 2.2.1) is pre-existing — statoscope already didn't declare rspack 2.x support before this PR.

Verification

• pnpm typecheck — passes
• pnpm test — 49/49 passing
• examples/ssr (bundler: 'rspack') builds successfully against 2.2.1
• Verified the @swc/plugin-transform-imports@13.0.0 wasm plugin actually loads and transforms under @swc/core@1.16.1

🤖 Generated with Claude Code

[DakEnviy]

praise: 🔥