fix(mir): PHI検証panic修正 - update_cfg()を検証前に呼び出し

A案実装: debug_verify_phi_inputs呼び出し前にCFG predecessorを更新

修正箇所（7箇所）:
- src/mir/builder/phi.rs:50, 73, 132, 143
- src/mir/builder/ops.rs:273, 328, 351

根本原因:
- Branch/Jump命令でsuccessorは即座に更新
- predecessorはupdate_cfg()で遅延再構築
- PHI検証が先に実行されてpredecessor未更新でpanic

解決策:
- 各debug_verify_phi_inputs呼び出し前に
  if let Some(func) = self.current_function.as_mut() {
      func.update_cfg();
  }
  を挿入してCFGを同期

影響: if/else文、論理演算子(&&/||)のPHI生成が正常動作

src/runner/modes/common_util/resolve/strip.rs

@@ -64,7 +64,8 @@ pub fn collect_using_and_strip(
             let is_path = target.starts_with('"')
                 || target.starts_with("./")
                 || target.starts_with('/')
-                || target.ends_with(".nyash");
+                || target.ends_with(".nyash")
+                || target.ends_with(".hako");
             if is_path {
                 // SSOT: Disallow file-using at top-level; allow only for sources located
                 // under a declared package root (internal package wiring), so that packages
@@ -169,12 +170,12 @@ pub fn collect_using_and_strip(
                         PackageKind::Package => {
                             let base = std::path::Path::new(&pkg.path);
                             let out = if let Some(m) = &pkg.main {
-                                if base.extension().and_then(|s| s.to_str()) == Some("nyash") {
+                                if matches!(base.extension().and_then(|s| s.to_str()), Some("nyash") | Some("hako")) {
                                     pkg.path.clone()
                                 } else {
                                     base.join(m).to_string_lossy().to_string()
                                 }
-                            } else if base.extension().and_then(|s| s.to_str()) == Some("nyash") {
+                            } else if matches!(base.extension().and_then(|s| s.to_str()), Some("nyash") | Some("hako")) {
                                 pkg.path.clone()
                             } else {
                                 let leaf = base