tools: add script to print blurb for SPI yearly report

Co-developed-by: Claude Opus 4.8 <noreply@anthropic.com>

tools/spi-report.sh

@@ -0,0 +1,53 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+#
+# Generate the SPI annual report blurb.
+#
+# Usage: tools/spi-report.sh [YEAR]
+#
+# YEAR defaults to the previous calendar year.
+
+set -euo pipefail
+
+year="${1:-$(($(date +%Y) - 1))}"
+prev_year=$((year - 1))
+
+range_start="${year}-01-01T00:00:00"
+range_end="$((year + 1))-01-01T00:00:00"
+prev_range_start="${prev_year}-01-01T00:00:00"
+prev_range_end="${year}-01-01T00:00:00"
+
+tags="$(git for-each-ref --format='%(creatordate:format:%Y) %(refname:short)' 'refs/tags/v[0-9]*')"
+
+major_releases="$(grep -cE "^${year} v[0-9]+\$" <<<"$tags" || true)"
+point_releases="$(grep -cE "^${year} v[0-9]+\.[0-9]+\$" <<<"$tags" || true)"
+
+commits="$(git rev-list --count --no-merges --since="$range_start" --until="$range_end" HEAD)"
+prev_commits="$(git rev-list --count --no-merges --since="$prev_range_start" --until="$prev_range_end" HEAD)"
+
+contributors="$(git shortlog -s --group=author --group=trailer:Co-authored-by \
+    --since="$range_start" --until="$range_end" HEAD |
+    sed -e '/Weblate/ d' -e '/dependabot\[bot\]/ d' | wc -l)"
+
+if [ "$commits" -ge "$prev_commits" ]; then
+    trend="up from"
+else
+    trend="down from"
+fi
+
+cat <<EOF
+systemd is a suite of basic building blocks for a Linux system. It
+provides a system and service manager that runs as PID 1 and starts
+the rest of the system.
+
+In ${year} we published ${major_releases} major releases of systemd and ${point_releases} point
+releases with bug fixes. We merged ${commits} commits (${trend} ${prev_commits} in ${prev_year})
+from a total of ${contributors} contributors.
+We organized the Image-Based Linux Summit
+(<placeholder for link to minutes>)
+and we participated in All Systems Go!
+(https://cfp.all-systems-go.io/all-systems-go-${year}/schedule/) in Berlin.
+
+We continue to hold a biweekly maintainers meeting and the project is
+maintaining a steady pace of development.
+EOF