chore: import upstream snapshot with attribution

.github/workflows/pre_commit.yml

@@ -0,0 +1,36 @@
+name: Pre-commit
+
+# Runs the repo-wide lint/format/secret checks via `task pre-commit`.
+# Called from build.yml on PRs and merge_group; also runnable on demand via workflow_dispatch.
+on:
+  workflow_call:
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Harden Runner
+        uses: step-security/harden-runner@ab7a9404c0f3da075243ca237b5fac12c98deaa5 # v2.19.3
+        with:
+          egress-policy: audit
+
+      - name: Checkout repository
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Install uv
+        uses: astral-sh/setup-uv@fac544c07dec837d0ccb6301d7b5580bf5edae39 # v8.2.0
+        with:
+          enable-cache: true
+
+      - name: Install Task
+        uses: go-task/setup-task@3be4020d41929789a01026e0e427a4321ce0ad44 # v2.0.0
+
+      - name: Run pre-commit checks
+        run: task pre-commit