public: publish selfhost snapshot to public repo (SSOT using + AST merge + JSON VM fixes)

- SSOT using profiles (aliases/packages via nyash.toml), AST prelude merge
- Parser/member guards; Builder pin/PHI and instance→function rewrite (dev on)
- VM refactors (handlers split) and JSON roundtrip/nested stabilization
- CURRENT_TASK.md updated with scope and acceptance criteria

Notes: dev-only guards remain togglable via env; no default behavior changes for prod.

apps/lib/json_native/lexer/tokenizer.nyash

@@ -13,7 +13,9 @@ box JsonTokenizer {
     errors: ArrayBox       // エラー情報配列
     
     birth(input_text) {
-        me.scanner = JsonScannerModule.create_scanner(input_text)
+        // Avoid static module wrapper to ensure constructor args are preserved on VM path
+        // (create_scanner(...) lost the argument under VM fallback in some cases)
+        me.scanner = new JsonScanner(input_text)
         me.tokens = new ArrayBox()
         me.errors = new ArrayBox()
     }