feat(mf): layer-aware sharing and runtime scope-array support

[ScriptedAlchemy]

Summary

This PR adds first-class layer-aware Module Federation behavior in Rspack and ports a comprehensive layer test matrix under serialCases/container-1-5.

Motivation

Layered MF usage (default, ssr, rsc, and custom layers) needs consistent share resolution and runtime behavior across container, reference, consume, and provide paths. This PR aligns those paths and adds regression coverage.

What Changed

• Runtime and plugin behavior:
• Updated MF container/reference/share runtime handling in Rust and JS implementations.
• Added/updated layer-aware scope resolution, including scope-array style handling in relevant runtime/plugin paths.
• Updated sharing internals (collect, consume, provide, and runtime modules) to preserve layer context.
• Bindings and type surface:
• Updated MF raw options/binding plumbing (crates/rspack_binding_api/.../raw_mf.rs).
• Updated Node binding type declarations (crates/node_binding/napi-binding.d.ts).
• Updated API extractor snapshot (packages/rspack/etc/core.api.md).
• Test coverage:
• Added serial layer suites:
• tests/rspack-test/serialCases/container-1-5/1-layers-full
• tests/rspack-test/serialCases/container-1-5/2-layers-full
• tests/rspack-test/serialCases/container-1-5/3-layers-full
• tests/rspack-test/serialCases/container-1-5/4-layers-full
• tests/rspack-test/serialCases/container-1-5/5-layers-full
• tests/rspack-test/serialCases/container-1-5/6-layers-full
• tests/rspack-test/serialCases/container-1-5/7-layers-full
• tests/rspack-test/serialCases/container-1-5/8-layers-full
• Updated sharing tree-shaking config case to align with layered sharing behavior.
• Docs and design notes:
• Added MF.md and RSC.md design/context documents used during this implementation.

Diff Snapshot

• 103 files changed
• ~2889 insertions / 244 deletions
• Major touch areas:
• crates/rspack_plugin_mf/**
• packages/rspack/src/container/**
• packages/rspack/src/sharing/**
• tests/rspack-test/serialCases/container-1-5/**

Compatibility

• Non-layered MF configs should continue to behave as before.
• Layered configs now resolve shared entries and runtime scope data with explicit layer semantics.

Validation

• CI is running on this PR branch after rustfmt fixes.
• Previous Rust check failure was rustfmt-only and has been fixed (fix(mf): format rust files for CI).

[github-actions]

Rsdoctor Bundle Diff Analysis

Found 5 projects in monorepo, 5 projects with changes.

📊 Quick Summary

Project	Total Size	Change
react-10k	5.7 MB	-
react-1k	825.4 KB	-
react-5k	2.7 MB	-
rome	984.2 KB	-
ui-components	2.2 MB	-

📋 Detailed Reports (Click to expand)

📁 react-10k

Path: ../build-tools-performance/cases/react-10k/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	5.7 MB	-	-
📄 JavaScript	5.7 MB	-	-
🎨 CSS	21.0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 react-1k

Path: ../build-tools-performance/cases/react-1k/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	825.4 KB	-	-
📄 JavaScript	825.4 KB	-	-
🎨 CSS	0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 react-5k

Path: ../build-tools-performance/cases/react-5k/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	2.7 MB	-	-
📄 JavaScript	2.7 MB	-	-
🎨 CSS	21.0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 rome

Path: ../build-tools-performance/cases/rome/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	984.2 KB	-	-
📄 JavaScript	984.2 KB	-	-
🎨 CSS	0 B	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

📁 ui-components

Path: ../build-tools-performance/cases/ui-components/dist/rsdoctor-data.json

⚠️ No baseline data found - Unable to perform comparison analysis

Metric	Current	Baseline	Change
📊 Total Size	2.2 MB	-	-
📄 JavaScript	2.0 MB	-	-
🎨 CSS	267.8 KB	-	-
🌐 HTML	0 B	-	-
📁 Other Assets	0 B	-	-

Generated by Rsdoctor GitHub Action

[github-actions]

📦 Binary Size-limit

Comparing 75af9c2 to feat: add support for readonly persistent cache (#12902) by Cole Ellison

❌ Size increased by 27.88KB from 48.59MB to 48.62MB (⬆️0.06%)

[codspeed-hq]

Merging this PR will not alter performance

✅ 16 untouched benchmarks
⏩ 1 skipped benchmark¹

---

_{Comparing feat/mf-layers (75af9c2) with main (649b67e)²}

Footnotes

1. 1 benchmark was skipped, so the baseline result was used instead. If it was deleted from the codebase, click here and archive it to remove it from the performance reports. ↩

2. No successful run was found on main (cc3efa6) during the generation of this report, so 649b67e was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩