chore: add bump-version.sh to sync all 4 version files at once

Eliminates the error-prone 4-file manual edit dance. Provides three modes: bump (scripts/bump-version.sh 0.1.27), check (--check exits 1 on drift), and show (no args).

Updates flowctl-cli/Cargo.toml, .claude-plugin/flowctl-version, .claude-plugin/plugin.json, and .claude-plugin/marketplace.json in a single atomic command.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: z23cc

scripts/bump-version.sh

@@ -0,0 +1,118 @@
+#!/usr/bin/env bash
+# bump-version.sh — single-command version bump across all 4 canonical files.
+#
+# Usage:
+#   scripts/bump-version.sh 0.1.27    # bump to 0.1.27
+#   scripts/bump-version.sh --check   # verify all files agree
+#   scripts/bump-version.sh           # print current version
+#
+# Touches:
+#   1. flowctl/crates/flowctl-cli/Cargo.toml       (bare semver)
+#   2. .claude-plugin/flowctl-version              (v-prefixed)
+#   3. .claude-plugin/plugin.json                  (bare semver)
+#   4. .claude-plugin/marketplace.json             (bare semver × 3)
+#
+# After running: commit + tag v<version> + push to trigger GitHub Release.
+
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+cd "$ROOT"
+
+CARGO="flowctl/crates/flowctl-cli/Cargo.toml"
+PIN=".claude-plugin/flowctl-version"
+PLUGIN=".claude-plugin/plugin.json"
+MARKET=".claude-plugin/marketplace.json"
+
+# ── Read current versions ───────────────────────────────────────────
+current_cargo()   { awk -F'"' '/^version = /{print $2; exit}' "$CARGO"; }
+current_pin()     { tr -d ' \t\n\r' < "$PIN" | sed 's/^v//'; }
+current_plugin()  { python3 -c 'import json,sys;print(json.load(open(sys.argv[1]))["version"])' "$PLUGIN"; }
+current_market()  { python3 -c 'import json,sys;d=json.load(open(sys.argv[1]));print(d["version"])' "$MARKET"; }
+
+print_current() {
+    printf "%-50s %s\n" "$CARGO"   "$(current_cargo)"
+    printf "%-50s %s\n" "$PIN"     "v$(current_pin)"
+    printf "%-50s %s\n" "$PLUGIN"  "$(current_plugin)"
+    printf "%-50s %s\n" "$MARKET"  "$(current_market)"
+}
+
+# ── Check mode ──────────────────────────────────────────────────────
+if [ "${1:-}" = "--check" ]; then
+    c="$(current_cargo)"; p="$(current_pin)"; pl="$(current_plugin)"; m="$(current_market)"
+    if [ "$c" = "$p" ] && [ "$p" = "$pl" ] && [ "$pl" = "$m" ]; then
+        echo "✓ all files agree on v$c"
+        exit 0
+    fi
+    echo "✗ version drift detected:" >&2
+    print_current >&2
+    exit 1
+fi
+
+# ── No args: just show ──────────────────────────────────────────────
+if [ $# -eq 0 ]; then
+    print_current
+    exit 0
+fi
+
+# ── Bump mode ───────────────────────────────────────────────────────
+NEW="$1"
+NEW="${NEW#v}"  # strip leading v if present
+
+# Validate semver-ish (X.Y.Z, optionally with prerelease)
+if ! printf '%s' "$NEW" | grep -Eq '^[0-9]+\.[0-9]+\.[0-9]+(-[A-Za-z0-9.-]+)?$'; then
+    echo "error: invalid version '$NEW' (expected X.Y.Z)" >&2
+    exit 1
+fi
+
+echo "bumping → v$NEW"
+
+# 1. Cargo.toml — target the flowctl-cli package line only
+#    (line starts with `version = "` near the top)
+python3 - "$CARGO" "$NEW" <<'PY'
+import re, sys
+path, new = sys.argv[1], sys.argv[2]
+src = open(path).read()
+# Match first `version = "..."` line (package version, not deps)
+src = re.sub(r'(?m)^version\s*=\s*"[^"]+"', f'version = "{new}"', src, count=1)
+open(path, 'w').write(src)
+PY
+
+# 2. flowctl-version — v-prefixed
+printf 'v%s\n' "$NEW" > "$PIN"
+
+# 3. plugin.json — update "version" field at top level
+python3 - "$PLUGIN" "$NEW" <<'PY'
+import json, sys
+path, new = sys.argv[1], sys.argv[2]
+with open(path) as f:
+    data = json.load(f)
+data["version"] = new
+with open(path, 'w') as f:
+    json.dump(data, f, indent=2, ensure_ascii=False)
+    f.write('\n')
+PY
+
+# 4. marketplace.json — update all 3 version fields
+python3 - "$MARKET" "$NEW" <<'PY'
+import json, sys
+path, new = sys.argv[1], sys.argv[2]
+with open(path) as f:
+    data = json.load(f)
+data["version"] = new
+data["metadata"]["version"] = new
+for plugin in data.get("plugins", []):
+    plugin["version"] = new
+with open(path, 'w') as f:
+    json.dump(data, f, indent=2, ensure_ascii=False)
+    f.write('\n')
+PY
+
+echo ""
+echo "updated files:"
+print_current
+echo ""
+echo "next steps:"
+echo "  cd flowctl && cargo build --release -p flowctl-cli  # updates Cargo.lock"
+echo "  git add -u && git commit -m \"chore: bump to v$NEW\""
+echo "  git tag v$NEW && git push && git push --tags"