feat: secrets migrate --status surveys per-project v2 readiness (EGB-710)

secrets

@@ -2186,6 +2186,46 @@ _migrate_project() {
 # Store-wide finalize: the only destructive step. Refuses unless verify --all
 # is green and every v1 properties blob has a v2 twin. Cuts a recovery tag,
 # stamps the marker, then drops v1 blobs.
+# Read-only survey: walk every project dir in the store and report each one's
+# v2-readiness from the blobs on disk (no manifest, no decryption). Exits
+# non-zero when any v1 properties blob lacks a v2 twin (i.e. the store is not
+# yet finalize-ready) so it can gate scripting, mirroring `verify`'s posture.
+_migrate_status() {
+  if [ "$(_store_format)" = "2" ]; then
+    info "Store format: v2 (finalized) — nothing to migrate."
+    return 0
+  fi
+  echo "Store format: v1 (not finalized). Per-project migration status:"
+  local any_untwinned=0 dir project v1 untwinned f new
+  for dir in "$SECRETS_DIR"/*/; do
+    [ -d "$dir" ] || continue
+    project=$(basename "$dir")
+    case "$project" in .*) continue ;; esac
+    v1=0; untwinned=0
+    while IFS= read -r f; do
+      [ -f "$f" ] || continue
+      v1=$((v1 + 1))
+      new="${f%.gradle-properties.age}.properties.age"
+      [ -f "$new" ] || untwinned=$((untwinned + 1))
+    done < <(find "$dir" -type f -name '*.gradle-properties.age' 2>/dev/null)
+    if [ "$v1" -eq 0 ]; then
+      echo "  $project: v2-ready (no v1 properties blobs)"
+    elif [ "$untwinned" -eq 0 ]; then
+      echo "  $project: migrated ($v1 v1 blob(s), all twinned)"
+    else
+      echo "  $project: NEEDS MIGRATE ($untwinned of $v1 v1 blob(s) un-twinned) — cd into the project and run 'secrets migrate'"
+      any_untwinned=1
+    fi
+  done
+  echo
+  if [ "$any_untwinned" -eq 1 ]; then
+    echo "Not finalize-ready: migrate the projects marked NEEDS MIGRATE, then run 'secrets migrate --finalize'."
+    return 1
+  fi
+  echo "Finalize-ready: every v1 properties blob has a v2 twin. Run 'secrets migrate --finalize' once every machine is upgraded."
+  return 0
+}
+
 _migrate_finalize() {
   local force="$1"
   check_key
@@ -2260,17 +2300,20 @@ $untwinned  cd into each project and run 'secrets migrate', then re-run 'secrets
 cmd_migrate() {
   resolve_store
   check_initialized
-  local dry_run=false finalize=false force=false
+  local dry_run=false finalize=false force=false status=false
   while [ $# -gt 0 ]; do
     case "$1" in
       --dry-run)     dry_run=true; shift ;;
       --finalize)    finalize=true; shift ;;
+      --status)      status=true; shift ;;
       --yes)         force=true; shift ;;
-      -*)            die "Unknown migrate flag: $1. Usage: secrets migrate [--dry-run | --finalize] [--yes]" ;;
-      *)             die "migrate takes no project argument. Run it from inside a project (copy-forward) or use --finalize (store-wide)." ;;
+      -*)            die "Unknown migrate flag: $1. Usage: secrets migrate [--dry-run | --status | --finalize] [--yes]" ;;
+      *)             die "migrate takes no project argument. Run it from inside a project (copy-forward), or use --status / --finalize (store-wide)." ;;
     esac
   done
-  if [ "$finalize" = true ]; then
+  if [ "$status" = true ]; then
+    _migrate_status
+  elif [ "$finalize" = true ]; then
     _migrate_finalize "$force"
   else
     _migrate_project "$dry_run"