Pre commit hook suite

.pre-commit-config.yaml

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+# Pre-commit hook suite for local code quality enforcement.
+# Install with: pipx install pre-commit && pre-commit install
+repos:
+  - repo: local
+    hooks:
+      - id: utility-contracts-quality-suite
+        name: Utility Contracts quality suite
+        entry: scripts/pre-commit-quality.sh
+        language: script
+        files: "^(contracts/|usage-dashboard/|scripts/pre-commit-quality\.sh|\.pre-commit-config\.yaml)"
+        pass_filenames: true

docs/PRE_COMMIT_QUALITY.md

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+# Pre-Commit Quality Suite
+
+This repository includes a pre-commit hook suite that runs the same quality gates developers are expected to satisfy before opening a pull request.
+
+## Architecture
+
+The suite is intentionally local and deterministic:
+
+1. `.pre-commit-config.yaml` registers a single repository-local hook.
+2. `scripts/pre-commit-quality.sh` executes the quality gates from the repository root.
+3. The hook receives changed files from pre-commit and runs only the checks relevant to those paths.
+4. Rust checks target the `contracts/Cargo.toml` workspace so the hook works even when invoked from another directory.
+5. Usage dashboard linting runs only when `usage-dashboard/node_modules` is present, avoiding network installs inside commit hooks.
+
+## Quality Gates
+
+For changed Rust workspace files, the hook enforces:
+
+- `cargo fmt --all -- --check` for canonical Rust formatting.
+- `cargo clippy --all-targets --all-features -- -D warnings` for warning-free Rust linting.
+- `cargo test --all-features` for workspace tests.
+
+For changed usage dashboard files, the hook enforces `npm run lint` when dependencies are installed.
+
+## Installation
+
+Install pre-commit once, then enable the repository hooks:
+
+```bash
+pipx install pre-commit
+pre-commit install
+```
+
+Developers who already manage Python tools with another package manager can install `pre-commit` through that workflow instead.
+
+## Manual Execution
+
+Run the suite without creating a commit:
+
+```bash
+pre-commit run --all-files
+```
+
+Or run the underlying script directly:
+
+```bash
+scripts/pre-commit-quality.sh --all
+```
+
+## Operational Notes
+
+- The hook performs local validation only; production availability, monitoring dashboards, alerting, blue-green deployment, and canary analysis remain CI/CD and operations concerns.
+- Security review is supported by making formatting, linting, and test failures visible before code reaches review.
+- The hook does not install dependencies or modify source files, keeping commit latency predictable and avoiding hidden network work.

scripts/pre-commit-quality.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+CONTRACTS_DIR="$ROOT_DIR/contracts"
+DASHBOARD_DIR="$ROOT_DIR/usage-dashboard"
+RUN_ALL=false
+FILES=()
+
+for arg in "$@"; do
+  case "$arg" in
+    --all) RUN_ALL=true ;;
+    *) FILES+=("$arg") ;;
+  esac
+done
+
+run_step() {
+  local label="$1"
+  shift
+
+  printf '\n🔍 %s\n' "$label"
+  "$@"
+}
+
+has_changed_file() {
+  local pattern="$1"
+  local file
+
+  "$RUN_ALL" && return 0
+  for file in "${FILES[@]}"; do
+    [[ "$file" == $pattern ]] && return 0
+  done
+  return 1
+}
+
+if [[ ! -d "$CONTRACTS_DIR" ]]; then
+  echo "❌ contracts workspace not found at $CONTRACTS_DIR" >&2
+  exit 1
+fi
+
+export CARGO_TERM_COLOR="${CARGO_TERM_COLOR:-always}"
+
+if has_changed_file "contracts/*.rs" || has_changed_file "contracts/*/src/*.rs" || has_changed_file "contracts/*/tests/*.rs" || has_changed_file "contracts/*/Cargo.toml" || has_changed_file "contracts/Cargo.toml"; then
+  run_step "Rust formatting" \
+    cargo fmt --manifest-path "$CONTRACTS_DIR/Cargo.toml" --all -- --check
+
+  run_step "Rust clippy" \
+    cargo clippy --manifest-path "$CONTRACTS_DIR/Cargo.toml" --all-targets --all-features -- -D warnings
+
+  run_step "Rust tests" \
+    cargo test --manifest-path "$CONTRACTS_DIR/Cargo.toml" --all-features
+else
+  printf '\nℹ️  Skipping Rust checks because this commit does not change Rust workspace files.\n'
+fi
+
+if has_changed_file "usage-dashboard/*.js" || has_changed_file "usage-dashboard/*.jsx" || has_changed_file "usage-dashboard/*.ts" || has_changed_file "usage-dashboard/*.tsx" || has_changed_file "usage-dashboard/package.json"; then
+  if [[ -d "$DASHBOARD_DIR/node_modules" ]]; then
+    run_step "Usage dashboard lint" \
+      npm --prefix "$DASHBOARD_DIR" run lint
+  else
+    printf '\n⚠️  Skipping usage dashboard lint because %s is missing. Run npm install in usage-dashboard to enable it.\n' \
+      "$DASHBOARD_DIR/node_modules"
+  fi
+else
+  printf '\nℹ️  Skipping usage dashboard lint because this commit does not change dashboard files.\n'
+fi
+
+printf '\n✅ Pre-commit quality suite passed.\n'