Add state helper and refresh specifier briefing

Add state.sh to print each role branch HEAD and the main-checkout status.
Update the briefing to use the single tmp/aps checkout, note daemon
self-healing, and point merge verification at verify.sh and the architect's
verification record.

By specifier.

swarmforge/scripts/state.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# Print current SwarmForge state: each role branch's HEAD and the main checkout
+# working-tree status. Use this to refresh the "Current master HEAD" section of
+# the specifier briefing without manual git inspection.
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
+cd "$ROOT"
+
+head_line() {
+  local branch="$1"
+  if git rev-parse --verify -q "$branch" >/dev/null 2>&1; then
+    printf '%s HEAD: %s %s\n' "$branch" "$(git rev-parse --short=10 "$branch")" "$(git log -1 --format=%s "$branch")"
+  fi
+}
+
+head_line master
+head_line swarmforge-coder
+head_line swarmforge-refactorer
+head_line swarmforge-architect
+
+if [ -n "$(git status --porcelain)" ]; then
+  echo "main working tree: dirty"
+else
+  echo "main working tree: clean"
+fi