fix: record type aliases now work for unification and field access

Expand type aliases via unify_with_env() everywhere in the type checker,
not just in a few places. This fixes named record types like
`type Vec2 = { x: Float, y: Float }` — they now properly unify with
anonymous records and support field access (v.x, v.y).

Also adds scripts/validate.sh for automated full-suite regression
testing (Rust tests + all 5 package test suites + type checking).

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

scripts/release.sh

@@ -11,6 +11,10 @@ set -euo pipefail
 #   GITEA_TOKEN - API token for git.qrty.ink (prompted if not set)
 #   GITEA_URL   - Gitea instance URL (default: https://git.qrty.ink)
 
+# cd to repo root (directory containing this script's parent)
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$SCRIPT_DIR/.."
+
 GITEA_URL="${GITEA_URL:-https://git.qrty.ink}"
 REPO_OWNER="blu"
 REPO_NAME="lux"

scripts/validate.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Lux Full Validation Script
+# Runs all checks: Rust tests, package tests, type checking, formatting, linting.
+# Run after every committable change to ensure no regressions.
+
+# cd to repo root (directory containing this script's parent)
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+cd "$SCRIPT_DIR/.."
+
+LUX="$(pwd)/target/release/lux"
+PACKAGES_DIR="$(pwd)/../packages"
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+CYAN='\033[0;36m'
+BOLD='\033[1m'
+NC='\033[0m'
+
+FAILED=0
+TOTAL=0
+
+step() {
+    TOTAL=$((TOTAL + 1))
+    printf "${CYAN}[%d]${NC} %s... " "$TOTAL" "$1"
+}
+
+ok() { printf "${GREEN}ok${NC} %s\n" "${1:-}"; }
+fail() { printf "${RED}FAIL${NC} %s\n" "${1:-}"; FAILED=$((FAILED + 1)); }
+
+# --- Rust checks ---
+step "cargo check"
+if nix develop --command cargo check 2>&1 | grep -q "Finished"; then ok; else fail; fi
+
+step "cargo test"
+OUTPUT=$(nix develop --command cargo test 2>&1 || true)
+RESULT=$(echo "$OUTPUT" | grep "test result:" || echo "no result")
+if echo "$RESULT" | grep -q "0 failed"; then ok "$RESULT"; else fail "$RESULT"; fi
+
+# --- Build release binary ---
+step "cargo build --release"
+if nix develop --command cargo build --release 2>&1 | grep -q "Finished"; then ok; else fail; fi
+
+# --- Package tests ---
+for pkg in path frontmatter xml rss markdown; do
+    PKG_DIR="$PACKAGES_DIR/$pkg"
+    if [ -d "$PKG_DIR" ]; then
+        step "lux test ($pkg)"
+        OUTPUT=$(cd "$PKG_DIR" && "$LUX" test 2>&1 || true)
+        RESULT=$(echo "$OUTPUT" | grep "passed" | tail -1 || echo "no result")
+        if echo "$RESULT" | grep -q "passed"; then ok "$RESULT"; else fail "$RESULT"; fi
+    fi
+done
+
+# --- Lux check on packages ---
+for pkg in path frontmatter xml rss markdown; do
+    PKG_DIR="$PACKAGES_DIR/$pkg"
+    if [ -d "$PKG_DIR" ]; then
+        step "lux check ($pkg)"
+        OUTPUT=$(cd "$PKG_DIR" && "$LUX" check 2>&1 || true)
+        RESULT=$(echo "$OUTPUT" | grep "passed" | tail -1 || echo "no result")
+        if echo "$RESULT" | grep -q "passed"; then ok; else fail "$RESULT"; fi
+    fi
+done
+
+# --- Summary ---
+printf "\n${BOLD}═══ Validation Summary ═══${NC}\n"
+if [ $FAILED -eq 0 ]; then
+    printf "${GREEN}All %d checks passed.${NC}\n" "$TOTAL"
+else
+    printf "${RED}%d/%d checks failed.${NC}\n" "$FAILED" "$TOTAL"
+    exit 1
+fi