feat: add resource collector for Forgejo runners

Add Go application that collects CPU and RAM metrics from /proc filesystem:
- Parse /proc/[pid]/stat for CPU usage (user/system time)
- Parse /proc/[pid]/status for memory usage (RSS, VmSize, etc.)
- Aggregate metrics across all processes
- Output via structured logging (JSON/text)
- Continuous collection with configurable interval

Designed for monitoring pipeline runner resource utilization to enable
dynamic runner sizing.

scripts/hooks/commit-msg

@@ -0,0 +1,54 @@
+#!/bin/bash
+# ABOUTME: Commit-msg hook that validates commit messages follow conventional commit format.
+# ABOUTME: Install with `make install-hooks`.
+
+set -e
+
+COMMIT_MSG_FILE="$1"
+COMMIT_MSG=$(cat "$COMMIT_MSG_FILE")
+
+# Pattern for conventional commits: type(scope)?: message
+# Types: feat, fix, chore, docs, style, refactor, perf, test, build, ci
+PATTERN='^(feat|fix|chore|docs|style|refactor|perf|test|build|ci)(\([[:alnum:]_-]+\))?!?:.+$'
+
+# Get the first line (subject) of the commit message
+FIRST_LINE=$(echo "$COMMIT_MSG" | head -n 1)
+
+# Skip validation for merge commits
+if echo "$FIRST_LINE" | grep -qE '^Merge '; then
+    exit 0
+fi
+
+# Skip validation for revert commits
+if echo "$FIRST_LINE" | grep -qE '^Revert '; then
+    exit 0
+fi
+
+if ! echo "$FIRST_LINE" | grep -qE "$PATTERN"; then
+    echo "Error: Invalid commit message format."
+    echo ""
+    echo "Commit message: '$FIRST_LINE'"
+    echo ""
+    echo "Expected format: <type>(<scope>)?: <description>"
+    echo ""
+    echo "Valid types:"
+    echo "  feat     - A new feature"
+    echo "  fix      - A bug fix"
+    echo "  chore    - Maintenance tasks"
+    echo "  docs     - Documentation changes"
+    echo "  style    - Code style changes (formatting, etc.)"
+    echo "  refactor - Code refactoring"
+    echo "  perf     - Performance improvements"
+    echo "  test     - Adding or updating tests"
+    echo "  build    - Build system changes"
+    echo "  ci       - CI configuration changes"
+    echo ""
+    echo "Examples:"
+    echo "  feat: add user authentication"
+    echo "  fix(auth): resolve token expiration issue"
+    echo "  chore(deps): update dependencies"
+    echo "  feat!: breaking change in API"
+    exit 1
+fi
+
+echo "Commit message format valid."

scripts/hooks/pre-commit

@@ -0,0 +1,28 @@
+#!/bin/bash
+# ABOUTME: Pre-commit hook that runs formatting and linting checks.
+# ABOUTME: Install with `make install-hooks`.
+
+set -e
+
+echo "Running pre-commit checks..."
+
+# Run go fmt and check if there are any changes
+echo "Checking formatting..."
+UNFORMATTED=$(gofmt -l .)
+if [ -n "$UNFORMATTED" ]; then
+    echo "Error: The following files are not formatted:"
+    echo "$UNFORMATTED"
+    echo ""
+    echo "Run 'make fmt' to format them."
+    exit 1
+fi
+
+# Run linter
+echo "Running linter..."
+make lint
+
+# Check for secrets with gitleaks
+echo "Checking for secrets..."
+make gitleaks
+
+echo "Pre-commit checks passed!"