release: prepare importer-schem v0.2.6

[madawei2699]

Summary

Prepare the importer-only patch release @i365dev/craftdag-importer-schem@0.2.6 for the bounded large-NBT importer fix merged in #129. The published npm version is currently 0.2.5; the existing publish workflow skips exact versions already present, so the package version must advance for the fix to ship. This release updates the package manifest and exported importerVersion together. Core, exporter, adapter, dependencies, and changelog are unchanged.

Validation

• pnpm --filter @i365dev/craftdag-importer-schem test — 12 tests passed.
• pnpm build — passed.
• pnpm test — passed (227 tests across all packages).
• pnpm typecheck — passed.
• pnpm lint — passed.
• pnpm pack produced i365dev-craftdag-importer-schem-0.2.6.tgz; inspected the packed manifest and compiled dist/index.js. The tarball reports version 0.2.6, contains the bounded noArraySizeCheck path and safety limits from fix: bound large schematic NBT imports #129, and retains dependencies @i365dev/craftdag-core: 0.2.0 and prismarine-nbt: ^2.6.0.

After this release PR is merged, the existing v* tag / workflow_dispatch publish workflow can publish the new exact npm version. No tag or npm publication is claimed by this PR.