fix: enforce alpha versioning (0.0.x), delete erroneous 0.1.x releases

Deleted v0.1.0, v0.1.1, v0.1.3 tags and Gitea releases — project is
alpha and should never have crossed 0.1.0. All package.json files
synced to 0.0.20. Added version-bump.sh script that hard-rejects any
version >= 0.1.0. Added versioning hard gate to AGENTS.md so agents
cannot repeat the mistake.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/version-bump.sh

@@ -0,0 +1,69 @@
+#!/usr/bin/env bash
+# version-bump.sh — Bump version across all workspace packages
+#
+# Usage:
+#   scripts/version-bump.sh <new-version>
+#   scripts/version-bump.sh 0.0.21
+#
+# Enforces:
+#   - Version MUST be 0.0.x (alpha constraint)
+#   - All package.json files are updated atomically
+#   - Rejects 0.1.0+ until explicitly unlocked
+
+set -euo pipefail
+
+REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
+
+if [[ $# -ne 1 ]]; then
+  echo "Usage: $0 <version>"
+  echo "Example: $0 0.0.21"
+  exit 1
+fi
+
+NEW_VERSION="$1"
+
+# Hard gate: alpha constraint (0.0.x only)
+if [[ ! "$NEW_VERSION" =~ ^0\.0\.[0-9]+$ ]]; then
+  echo "ERROR: Version must be 0.0.x (alpha). Got: $NEW_VERSION"
+  echo ""
+  echo "This project is in ALPHA. Versions >= 0.1.0 are not allowed."
+  echo "If this constraint needs to change, update AGENTS.md and this script."
+  exit 1
+fi
+
+# Patch number must be > 0
+PATCH="${NEW_VERSION##0.0.}"
+if [[ "$PATCH" -lt 1 ]]; then
+  echo "ERROR: Patch version must be >= 1. Got: $NEW_VERSION"
+  exit 1
+fi
+
+# Find all package.json files in the monorepo
+PACKAGE_FILES=(
+  "$REPO_ROOT/package.json"
+)
+
+for dir in "$REPO_ROOT"/apps/*/package.json "$REPO_ROOT"/packages/*/package.json; do
+  [[ -f "$dir" ]] && PACKAGE_FILES+=("$dir")
+done
+
+echo "Bumping all packages to $NEW_VERSION"
+echo ""
+
+for pkg in "${PACKAGE_FILES[@]}"; do
+  REL_PATH="${pkg#"$REPO_ROOT"/}"
+  OLD_VERSION=$(grep -o '"version": "[^"]*"' "$pkg" | head -1 | cut -d'"' -f4)
+  # Use node for reliable JSON editing (preserves formatting better than sed)
+  node -e "
+    const fs = require('fs');
+    const path = '$pkg';
+    const raw = fs.readFileSync(path, 'utf8');
+    const updated = raw.replace(/\"version\": \"[^\"]*\"/, '\"version\": \"$NEW_VERSION\"');
+    fs.writeFileSync(path, updated);
+  "
+  echo "  $REL_PATH: $OLD_VERSION -> $NEW_VERSION"
+done
+
+echo ""
+echo "Done. $NEW_VERSION applied to ${#PACKAGE_FILES[@]} packages."
+echo "Next steps: commit, tag (v$NEW_VERSION), push."