deps/vm: vendor regress 0.11.1 补 Script/Script_Extensions 的 Unknown(Zzzz) 取值——上游表缺未分配码点集取值，规范合法模式 \p{Script=Unknown} 编译期 SyntaxError；fork 纯增量（0 行改动上游行，仅补区间表与解析臂），回归钉四则（未分配匹配/已分配不匹配/sc·scx·Zzzz 别名/既有取值不扰动）

third_party/regress/.github/dependabot.yml

@@ -0,0 +1,11 @@
+---
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "daily"

third_party/regress/.github/workflows/autofix.yml

@@ -0,0 +1,31 @@
+name: autofix.ci
+on:
+  workflow_call:
+  pull_request:
+  push:
+    branches: [ "main" ]
+permissions:
+  contents: read
+
+jobs:
+  autofix:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: actions/cache@v5
+        with:
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+          key: autofix-${{ hashFiles('**/Cargo.lock') }}
+          
+      - run: rustup toolchain install ${{ env.rust_clippy }} --profile minimal --component rustfmt --component clippy
+      - run: rustup default ${{ env.rust_clippy }}
+
+      - run: cargo clippy --fix --workspace
+      - run: cargo fmt --all
+
+      - uses: autofix-ci/action@7a166d7532b277f34e16238930461bf77f9d7ed8

third_party/regress/.github/workflows/rust.yml

@@ -0,0 +1,77 @@
+on:
+  pull_request:
+    branches:
+      - "**"
+  push:
+    branches:
+      - "**"
+
+name: Continuous integration
+
+jobs:
+  check:
+    name: Check
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v5
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo check --verbose
+
+  test:
+    name: Test Suite
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+        features:
+          - ""
+          - "index-positions"
+          - "prohibit-unsafe"
+          - "utf16"
+          - "index-positions,prohibit-unsafe"
+          - "index-positions,utf16"
+          - "prohibit-unsafe,utf16"
+          - "index-positions,prohibit-unsafe,utf16"
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v5
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo test --features "${{ matrix.features }}" --verbose
+
+  clippy:
+    name: Clippy
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo clippy --all-targets --features "backend-pikevm,std,index-positions,prohibit-unsafe,utf16" -- -D warnings
+
+  test-nightly:
+    name: Test (Nightly)
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v5
+      - uses: dtolnay/rust-toolchain@nightly
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo test --all-features --verbose
+
+  doc:
+    name: Documentation
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v5
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo doc --verbose --document-private-items
+        env:
+          RUSTDOCFLAGS: -D warnings