smokes: add curated LLVM runner; archive legacy smokes; PHI-off unified across Bridge/Builder; LLVM resolver tracing; minimal Throw lowering; config env getters; dev profile and root cleaner; docs updated; CI workflow runs curated LLVM (PHI-on/off)

tools/clean_root_artifacts.sh

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Non-destructive cleaner for stray build artifacts in repo root.
+# Dry-run by default; pass --apply to actually remove.
+
+ROOT_DIR=$(cd "$(dirname "$0")/.." && pwd)
+APPLY=0
+[[ "${1:-}" == "--apply" ]] && APPLY=1
+
+cd "$ROOT_DIR"
+
+patterns=(
+  "app_*"              # e.g., app_parity_*, app_stage3_loop, etc.
+  "*_app"              # e.g., test_filebox_app
+  "*.o"                # stray .o files
+)
+
+echo "[clean-root] scanning..."
+found=()
+for pat in "${patterns[@]}"; do
+  while IFS= read -r -d $'\0' f; do
+    # skip directories and keep inside tools/, src/, apps/, etc.
+    [[ -d "$f" ]] && continue
+    case "$f" in
+      src/*|apps/*|examples/*|tools/*|docs/*|tests/*|crates/*|plugins/*) continue ;;
+    esac
+    found+=("$f")
+  done < <(find . -maxdepth 1 -name "$pat" -print0 2>/dev/null || true)
+done
+
+if (( ${#found[@]} == 0 )); then
+  echo "[clean-root] nothing to clean"
+  exit 0
+fi
+
+printf "[clean-root] candidates (%d):\n" "${#found[@]}"
+printf '  %s\n' "${found[@]}"
+
+if (( APPLY )); then
+  echo "[clean-root] removing..."
+  rm -f -- "${found[@]}"
+  echo "[clean-root] done"
+else
+  echo "[clean-root] dry-run (no files removed). Use --apply to remove."
+fi
+