diff --git a/app/core/note_payload.py b/app/core/note_payload.py
index 0c278d9..054262c 100644
--- a/app/core/note_payload.py
+++ b/app/core/note_payload.py
@@ -1,159 +1,139 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
 """
-app/core/note_payload.py  (Mindnet V2 — types.yaml authoritative)
-- retriever_weight und chunk_profile werden aus config/types.yaml gelesen.
-- Reihenfolge: types.<type>  >  defaults.*  >  Fallbacks (1.0 / "default").
-- Frontmatter-Overrides für diese beiden Felder werden bewusst IGNORIERT.
-- edge_defaults (falls in types.yaml definiert) werden in die Note-Payload gespiegelt.
-- MINDNET_TYPES_FILE kann absoluten Pfad liefern, sonst ./config/types.yaml.
+Modul: app/core/note_payload.py
+Version: 2.0.0
+
+Zweck
+-----
+Erzeugt ein robustes Note-Payload. Werte wie `retriever_weight`, `chunk_profile`
+und `edge_defaults` werden in folgender Priorität bestimmt:
+1) Frontmatter (Note)
+2) Typ-Registry (config/types.yaml: types.<type>.*)
+3) Registry-Defaults (config/types.yaml: defaults.*)
+4) ENV-Defaults (MINDNET_DEFAULT_RETRIEVER_WEIGHT / MINDNET_DEFAULT_CHUNK_PROFILE)
 """
-
 from __future__ import annotations
-from typing import Any, Dict, Optional, List
-import os, yaml, hashlib, datetime
 
-# ----------------------- helpers -----------------------
+from typing import Any, Dict, Tuple, Optional
+import os, json, pathlib
 
-def _env(n: str, d: Optional[str]=None) -> str:
-    v = os.getenv(n)
-    return v if v is not None else (d or "")
+try:
+    import yaml
+except Exception:
+    yaml = None
 
-def _load_types() -> dict:
-    p = _env("MINDNET_TYPES_FILE", "./config/types.yaml")
+def _as_dict(x) -> Dict[str, Any]:
+    if isinstance(x, dict):
+        return dict(x)
     try:
-        with open(p, "r", encoding="utf-8") as f:
-            return yaml.safe_load(f) or {}
+        return dict(x or {})
+    except Exception:
+        return {"raw": str(x)}
+
+def _pick_args(*args, **kwargs) -> Tuple[Optional[str], Optional[dict]]:
+    path = kwargs.get("path") or (args[0] if args else None)
+    types_cfg = kwargs.get("types_cfg") or kwargs.get("types") or None
+    return path, types_cfg
+
+def _env_float(name: str, default: float) -> float:
+    try:
+        return float(os.environ.get(name, default))
+    except Exception:
+        return default
+
+def _ensure_list(x) -> list:
+    if x is None: return []
+    if isinstance(x, list): return [str(i) for i in x]
+    if isinstance(x, (set, tuple)): return [str(i) for i in x]
+    return [str(x)]
+
+# ---- Registry laden --------------------------------------------------------
+
+def _load_types_config(explicit_cfg: Optional[dict] = None) -> dict:
+    if explicit_cfg and isinstance(explicit_cfg, dict):
+        return explicit_cfg
+    path = os.getenv("MINDNET_TYPES_FILE") or "./config/types.yaml"
+    if not os.path.isfile(path) or yaml is None:
+        return {}
+    try:
+        with open(path, "r", encoding="utf-8") as f:
+            data = yaml.safe_load(f) or {}
+        return data if isinstance(data, dict) else {}
     except Exception:
         return {}
 
-def _get_types_map(reg: dict) -> dict:
-    if isinstance(reg, dict) and isinstance(reg.get("types"), dict):
-        return reg["types"]
-    return reg if isinstance(reg, dict) else {}
+def _cfg_for_type(note_type: str, reg: dict) -> dict:
+    if not isinstance(reg, dict):
+        return {}
+    types = reg.get("types") if isinstance(reg.get("types"), dict) else reg
+    return types.get(note_type, {}) if isinstance(types, dict) else {}
 
-def _get_defaults(reg: dict) -> dict:
-    if isinstance(reg, dict) and isinstance(reg.get("defaults"), dict):
-        return reg["defaults"]
-    # alias "global" erlaubt
-    if isinstance(reg, dict) and isinstance(reg.get("global"), dict):
-        return reg["global"]
+def _cfg_defaults(reg: dict) -> dict:
+    if not isinstance(reg, dict):
+        return {}
+    for key in ("defaults", "default", "global"):
+        v = reg.get(key)
+        if isinstance(v, dict):
+            return v
     return {}
 
-def _resolve_chunk_profile(note_type: str, reg: dict) -> str:
-    types = _get_types_map(reg)
-    if isinstance(types, dict):
-        t = types.get(note_type, {})
-        if isinstance(t, dict) and isinstance(t.get("chunk_profile"), str):
-            return t["chunk_profile"]
-    defs = _get_defaults(reg)
-    if isinstance(defs, dict) and isinstance(defs.get("chunk_profile"), str):
-        return defs["chunk_profile"]
-    return "default"
+# ---- Haupt-API -------------------------------------------------------------
 
-def _as_float(x: Any) -> Optional[float]:
+def make_note_payload(note: Any, *args, **kwargs) -> Dict[str, Any]:
+    n = _as_dict(note)
+    path_arg, types_cfg_explicit = _pick_args(*args, **kwargs)
+    reg = _load_types_config(types_cfg_explicit)
+
+    fm = n.get("frontmatter") or {}
+    fm_type = fm.get("type") or n.get("type") or "concept"
+    note_type = str(fm_type)
+
+    cfg_type = _cfg_for_type(note_type, reg)
+    cfg_def  = _cfg_defaults(reg)
+
+    default_rw = _env_float("MINDNET_DEFAULT_RETRIEVER_WEIGHT", 1.0)
+    retriever_weight = fm.get("retriever_weight")
+    if retriever_weight is None:
+        retriever_weight = cfg_type.get("retriever_weight", cfg_def.get("retriever_weight", default_rw))
     try:
-        return float(x)
+        retriever_weight = float(retriever_weight)
     except Exception:
-        return None
+        retriever_weight = default_rw
 
-def _resolve_retriever_weight(note_type: str, reg: dict) -> float:
-    types = _get_types_map(reg)
-    if isinstance(types, dict):
-        t = types.get(note_type, {})
-        if isinstance(t, dict) and (t.get("retriever_weight") is not None):
-            v = _as_float(t.get("retriever_weight"))
-            if v is not None:
-                return float(v)
-    defs = _get_defaults(reg)
-    if isinstance(defs, dict) and (defs.get("retriever_weight") is not None):
-        v = _as_float(defs.get("retriever_weight"))
-        if v is not None:
-            return float(v)
-    return 1.0
+    chunk_profile = fm.get("chunk_profile")
+    if chunk_profile is None:
+        chunk_profile = cfg_type.get("chunk_profile", cfg_def.get("chunk_profile", os.environ.get("MINDNET_DEFAULT_CHUNK_PROFILE", "medium")))
+    if not isinstance(chunk_profile, str):
+        chunk_profile = "medium"
 
-# ------------------- public API -------------------
+    edge_defaults = fm.get("edge_defaults")
+    if edge_defaults is None:
+        edge_defaults = cfg_type.get("edge_defaults", cfg_def.get("edge_defaults", []))
+    edge_defaults = _ensure_list(edge_defaults)
 
-def make_note_payload(parsed_note: Any,
-                      *,
-                      vault_root: str,
-                      hash_mode: str = "body",
-                      hash_normalize: str = "canonical",
-                      hash_source: str = "parsed",
-                      file_path: Optional[str] = None) -> Dict[str, Any]:
-    """
-    Erwartet ein Parsed-Objekt mit Attributen:
-      - frontmatter (dict)
-      - body (str)
-      - path (optional)
-    Liefert Note-Payload mit deterministischer note_id und Typ-Werten aus types.yaml.
-    """
-    fm = (getattr(parsed_note, "frontmatter", None) or {}) if parsed_note else {}
-    title = fm.get("title") or ""
-    note_type = fm.get("type") or "concept"
-    note_id = fm.get("id") or _stable_id_from_path_or_title(file_path or "", title)
-    tags = fm.get("tags") or []
-    if isinstance(tags, str):
-        tags = [tags]
+    note_id = n.get("note_id") or n.get("id") or fm.get("id")
+    title = n.get("title") or fm.get("title") or ""
+    path = n.get("path") or path_arg
+    if isinstance(path, pathlib.Path):
+        path = str(path)
 
-    # types.yaml authoritative:
-    reg = _load_types()
-    chunk_profile = _resolve_chunk_profile(note_type, reg)
-    retriever_weight = _resolve_retriever_weight(note_type, reg)
-    # edge_defaults (falls vorhanden)
-    edge_defaults = None
-    types = _get_types_map(reg)
-    if isinstance(types, dict):
-        t = types.get(note_type, {})
-        if isinstance(t, dict) and isinstance(t.get("edge_defaults"), list):
-            edge_defaults = t["edge_defaults"]
-
-    updated = _ts_to_int(fm.get("updated"))
-
-    payload: Dict[str, Any] = {
+    payload = {
         "note_id": note_id,
-        "type": note_type,
         "title": title,
-        "tags": tags,
-        "updated": updated if updated is not None else 0,
-        "path": file_path or "",
+        "type": note_type,
+        "path": path or "",
+        "retriever_weight": retriever_weight,
         "chunk_profile": chunk_profile,
-        "retriever_weight": float(retriever_weight),
+        "edge_defaults": edge_defaults,
     }
-    if edge_defaults is not None:
-        payload["edge_defaults"] = edge_defaults
 
+    tags = fm.get("tags") or fm.get("keywords") or n.get("tags")
+    if tags: payload["tags"] = _ensure_list(tags)
+    for k in ("created","modified","date"):
+        v = fm.get(k) or n.get(k)
+        if v: payload[k] = str(v)
+
+    # JSON-Roundtrip zur harten Validierung (ASCII beibehalten)
+    json.loads(json.dumps(payload, ensure_ascii=False))
     return payload
-
-# ------------------- internal utilities -------------------
-
-def _stable_id_from_path_or_title(path: str, title: str) -> str:
-    base = path or title or ""
-    if not base:
-        base = "note"
-    h = hashlib.sha1(base.encode("utf-8")).hexdigest()[:6]
-    # title-sourced; in V2 typischerweise durch Frontmatter id ersetzt
-    return f"auto-{h}"
-
-def _ts_to_int(val: Any) -> Optional[int]:
-    # akzeptiert YYYY-MM-DD oder epoch int; None bei Fehler
-    if val is None:
-        return None
-    if isinstance(val, int):
-        return val
-    if isinstance(val, float):
-        return int(val)
-    if isinstance(val, str):
-        val = val.strip()
-        # YYYY-MM-DD
-        try:
-            dt = datetime.date.fromisoformat(val)
-            return int(datetime.datetime(dt.year, dt.month, dt.day).timestamp())
-        except Exception:
-            pass
-        # epoch string
-        try:
-            return int(val)
-        except Exception:
-            return None
-    return None