[OKAN-SOFTWARE]

Summary

Add static Vite/Rolldown hook filters for four Slidev hooks with stable, well-defined module-ID predicates, reducing unnecessary JavaScript hook invocations while preserving fallback checks.

Partially addresses #2284 (does not close the issue).

Changes

• contextInjection.ts: add transform ID filter for user .vue files, excluding Slidev client components.
• monacoTypes.ts: add a shared prefix filter to the resolveId and load hooks.
• loaders.ts: filter resolveId to /@slidev/ virtual modules and __slidev_ IDs.
• test/plugin-hook-filters.test.ts: add filter-selection regression cases and fallback handler assertions.

The existing in-handler guards remain for compatibility with older Vite/Rollup versions.

Scope and overlapping work

• hmrPatch.ts and layoutWrapper.ts already have filters on current main.
• compilerFlagsVue.ts is intentionally excluded because open PR fix: apply dev define flags to JS/TS client modules #2714 already adds a filter while fixing a separate client JS/TS issue.
• loaders.ts's dynamic load hook is unchanged. It handles generated templates and data-dependent Markdown files; a restrictive static filter requires careful consideration of dynamically added modules and HMR, and a catch-all filter provides no invocation savings.

Validation

• Compared against upstream main at a42aff28dd75f26eb5abbf3d616ea022c3d08924; four intended files, two focused commits.
• Checked current open PR listing for competing changes and avoided fix: apply dev define flags to JS/TS client modules #2714.
• Dependency-free Node parity checks: 2 suites pass for representative and generated module IDs.
• TypeScript test-file syntax parses without errors.
• Windows / pnpm 12.15.0: dependency installation and pnpm build completed successfully.
• vue-tsc --noEmit passed.
• Focused ESLint passed for the four changed files.
• pnpm exec vitest run test/plugin-hook-filters.test.ts — 3 tests passed.
• pnpm test — 35 test files / 382 tests passed (local run, 2026-10-27).
• pnpm verify — not fully green: build and typechecking passed, then the earlier repository-wide ESLint run stopped on 138 errors; the 3 issues in the added test have since been fixed and focused lint passed. The remaining reported errors concern unrelated repository files (mostly Windows CRLF expectations and YAML formatting). Repository-wide lint has not been re-run after that fix.
• GitHub Actions: upstream workflows currently report action_required for this fork PR; CI success is not yet established.

The local unit-test suite is green. Browser-level Vite/Rolldown integration and maintainer CI remain unverified.

Additional notes

This is deliberately a focused partial contribution to #2284; it does not mark the issue resolved or change runtime behavior for dynamic load IDs.

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