diff --git a/app/core/edges.py b/app/core/edges.py
deleted file mode 100644
index c8b7fd7..0000000
--- a/app/core/edges.py
+++ /dev/null
@@ -1,296 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-"""
-Modul: app/core/edges.py
-Version: 2.0.0 (V2‑superset, rückwärtskompatibel zu v1 vom 2025‑09‑09)
-
-Zweck
------
-Bewahrt die bestehende Edgelogik (belongs_to, prev/next, references, backlink)
-und ergänzt V2‑Felder + Typ‑Default‑Kanten gemäß config/types.yaml (edge_defaults).
-Die Funktion ist **idempotent** und **rückwärtskompatibel** zur bisherigen Signatur.
-
-Kompatibilitätsgarantien (gegenüber v1):
-- **Input**: akzeptiert identische Chunk‑Payloads wie v1:
-  * `id` (Chunk‑ID), `note_id` (Owner), `neighbors.prev|next` (optional),
-    `references: [{target_id: ...}]` (optional),
-    alternativ: `chunk_id`, `chunk_index|ord`, `window|text`
-- **Output (v1‑Felder)**: `kind`, `source_id`, `target_id`, `scope`, `note_id`, `edge_id`
-- **Neu (v2‑Felder)**: `relation`, `src_note_id`, `src_chunk_id?`, `dst_note_id`, `dst_chunk_id?`,
-  `provenance` (`explicit|rule`), `rule_id?`, `confidence?`
-
-Regeln
-------
-- Deduplizierungsschlüssel: (source_id, target_id, relation, rule_id)
-- Strukturkanten:
-  * belongs_to: 1× pro Chunk
-  * next/prev: Sequenz der Chunks; nutzt bevorzugt neighbors; sonst ord/chunk_index
-- Explizite Referenzen:
-  * aus Chunk: `references[].target_id` (falls vorhanden)
-  * Fallback: Wikilinks in `window|text`: [[Some Title|some-id]] oder [[some-id]]
-- Note‑Scope:
-  * backlink immer; references nur, wenn include_note_scope_refs=True
-- Typ‑Defaults (edge_defaults aus config/types.yaml des **Quell‑Notiztyps**):
-  * Für jede explizite Referenz wird je default‑Relation eine Regel‑Kante erzeugt
-  * rule_id: "type_default:{note_type}:{relation}:v1", provenance="rule"
-
-Konfiguration
--------------
-- ENV MINDNET_TYPES_FILE (Default: ./config/types.yaml)
-
-Lizenz/Autor
-------------
-- Erstimplementierung v1 (2025‑09‑09) — Projekt Mindnet
-- Erweiterung v2 (2025‑11‑11) — kompatible Superset‑Implementierung
-"""
-from __future__ import annotations
-
-import os
-import re
-from typing import Dict, Iterable, List, Optional, Tuple, Set
-
-try:
-    import yaml  # optional, nur für types.yaml
-except Exception:  # pragma: no cover
-    yaml = None
-
-# ------------------------------------------------------------
-# Hilfen: types.yaml laden (edge_defaults)
-# ------------------------------------------------------------
-
-def _types_path() -> str:
-    return os.getenv("MINDNET_TYPES_FILE") or "./config/types.yaml"
-
-def _load_types() -> Dict[str, dict]:
-    p = _types_path()
-    if not os.path.isfile(p) or yaml is None:
-        return {}
-    try:
-        with open(p, "r", encoding="utf-8") as f:
-            data = yaml.safe_load(f) or {}
-        if isinstance(data, dict) and "types" in data and isinstance(data["types"], dict):
-            return data["types"]
-        return data if isinstance(data, dict) else {}
-    except Exception:
-        return {}
-
-def _edge_defaults_for(note_type: Optional[str]) -> List[str]:
-    types = _load_types()
-    t = (note_type or "").strip().lower()
-    cfg = types.get(t) or {}
-    defaults = cfg.get("edge_defaults") or []
-    if isinstance(defaults, str):
-        defaults = [defaults]
-    return [str(x) for x in defaults if isinstance(x, (str, int, float))]
-
-# ------------------------------------------------------------
-# Wikilink‑Parser (Fallback, wenn ch["references"] fehlt)
-# ------------------------------------------------------------
-
-_WIKILINK_RE = re.compile(r"\[\[(?:[^\|\]]+\|)?([a-zA-Z0-9_\-#:. ]+)\]\]")
-
-def _extract_wikilinks(text: str) -> List[str]:
-    ids: List[str] = []
-    for m in _WIKILINK_RE.finditer(text or ""):
-        ids.append(m.group(1).strip())
-    return ids
-
-# ------------------------------------------------------------
-# Utility
-# ------------------------------------------------------------
-
-def _mk_edge_id(kind: str, s: str, t: str, scope: str, rule_id: Optional[str] = None) -> str:
-    base = f"{kind}:{s}->{t}#{scope}"
-    if rule_id:
-        base += f"|{rule_id}"
-    try:
-        import hashlib
-        return hashlib.blake2s(base.encode("utf-8"), digest_size=12).hexdigest()
-    except Exception:  # pragma: no cover
-        return base
-
-def _dedupe(edges: List[Dict]) -> List[Dict]:
-    seen: Set[Tuple[str,str,str,str]] = set()
-    out: List[Dict] = []
-    for e in edges:
-        s = str(e.get("source_id") or "")
-        t = str(e.get("target_id") or "")
-        rel = str(e.get("relation") or e.get("kind") or "edge")
-        rule = str(e.get("rule_id") or "")
-        key = (s, t, rel, rule)
-        if key in seen:
-            continue
-        seen.add(key)
-        out.append(e)
-    return out
-
-def _first(v: dict, *keys, default=None):
-    for k in keys:
-        if k in v and v[k] is not None:
-            return v[k]
-    return default
-
-# ------------------------------------------------------------
-# Hauptfunktion
-# ------------------------------------------------------------
-
-def build_edges_for_note(
-    note_id: str,
-    chunk_payloads: List[Dict],
-    note_level_refs: Optional[List[str]] = None,
-    *,
-    include_note_scope_refs: bool = False,
-) -> List[Dict]:
-    edges: List[Dict] = []
-    chunks = list(chunk_payloads or [])
-    # Notiztyp aus erstem Chunk ableiten (kompatibel zu existierenden Payloads)
-    note_type = (chunks[0].get("type") if chunks else None) or (chunks[0].get("note_type") if chunks else None)
-
-    # --- Strukturkanten ------------------------------------------------------
-    # belongs_to
-    for ch in chunks:
-        cid = _first(ch, "id", "chunk_id")
-        if not cid:
-            continue
-        owner = ch.get("note_id") or note_id
-        e = {
-            "edge_id": _mk_edge_id("belongs_to", cid, note_id, "chunk", "structure:belongs_to:v1"),
-            "kind": "belongs_to",
-            "relation": "belongs_to",
-            "scope": "chunk",
-            "source_id": cid,
-            "target_id": note_id,
-            "note_id": owner,           # v1-Kompat
-            # v2
-            "src_note_id": owner,
-            "src_chunk_id": cid,
-            "dst_note_id": note_id,
-            "provenance": "rule",
-            "rule_id": "structure:belongs_to:v1",
-            "confidence": 1.0,
-        }
-        edges.append(e)
-
-    # next/prev — bevorzugt neighbors.prev/next; sonst via ord/chunk_index
-    # Map der Chunks nach Index
-    ordered = list(chunks)
-    def _idx(c):
-        return _first(c, "chunk_index", "ord", default=0)
-    ordered.sort(key=_idx)
-
-    for i, ch in enumerate(ordered):
-        cid = _first(ch, "id", "chunk_id")
-        if not cid:
-            continue
-        owner = ch.get("note_id") or note_id
-        nb = ch.get("neighbors") or {}
-        prev_id = nb.get("prev")
-        next_id = nb.get("next")
-        # Fallback-Reihenfolge
-        if prev_id is None and i > 0:
-            prev_id = _first(ordered[i-1], "id", "chunk_id")
-        if next_id is None and i+1 < len(ordered):
-            next_id = _first(ordered[i+1], "id", "chunk_id")
-
-        if prev_id:
-            edges.append({
-                "edge_id": _mk_edge_id("prev", cid, prev_id, "chunk", "structure:order:v1"),
-                "kind": "prev", "relation": "prev", "scope": "chunk",
-                "source_id": cid, "target_id": prev_id, "note_id": owner,
-                "src_note_id": owner, "src_chunk_id": cid,
-                "dst_note_id": owner, "dst_chunk_id": prev_id,
-                "provenance": "rule", "rule_id": "structure:order:v1", "confidence": 0.95,
-            })
-            edges.append({
-                "edge_id": _mk_edge_id("next", prev_id, cid, "chunk", "structure:order:v1"),
-                "kind": "next", "relation": "next", "scope": "chunk",
-                "source_id": prev_id, "target_id": cid, "note_id": owner,
-                "src_note_id": owner, "src_chunk_id": prev_id,
-                "dst_note_id": owner, "dst_chunk_id": cid,
-                "provenance": "rule", "rule_id": "structure:order:v1", "confidence": 0.95,
-            })
-
-    # --- Explizite Referenzen (Chunk‑Scope) ---------------------------------
-    explicit_refs: List[Dict] = []
-    for ch in chunks:
-        cid = _first(ch, "id", "chunk_id")
-        if not cid:
-            continue
-        owner = ch.get("note_id") or note_id
-        # 1) bevorzugt vorhandene ch["references"]
-        refs = ch.get("references") or []
-        targets = [r.get("target_id") for r in refs if isinstance(r, dict) and r.get("target_id")]
-        # 2) Fallback: Wikilinks aus Text
-        if not targets:
-            text = _first(ch, "window", "text", default="") or ""
-            targets = _extract_wikilinks(text)
-        for tid in targets:
-            if not isinstance(tid, str) or not tid.strip():
-                continue
-            e = {
-                "edge_id": _mk_edge_id("references", cid, tid, "chunk"),
-                "kind": "references",
-                "relation": "references",
-                "scope": "chunk",
-                "source_id": cid,
-                "target_id": tid,
-                "note_id": owner,
-                # v2
-                "src_note_id": owner,
-                "src_chunk_id": cid,
-                "dst_note_id": tid,
-                "provenance": "explicit",
-                "rule_id": "",
-                "confidence": 1.0,
-            }
-            edges.append(e)
-            explicit_refs.append(e)
-
-    # --- Note‑Scope: references (optional) + backlink (immer) ----------------
-    unique_refs = []
-    if note_level_refs:
-        seen = set()
-        for tid in note_level_refs:
-            if isinstance(tid, str) and tid.strip() and tid not in seen:
-                unique_refs.append(tid); seen.add(tid)
-
-    for tid in unique_refs:
-        if include_note_scope_refs:
-            edges.append({
-                "edge_id": _mk_edge_id("references", note_id, tid, "note"),
-                "kind": "references", "relation": "references", "scope": "note",
-                "source_id": note_id, "target_id": tid, "note_id": note_id,
-                "src_note_id": note_id, "dst_note_id": tid,
-                "provenance": "explicit", "rule_id": "", "confidence": 1.0,
-            })
-        edges.append({
-            "edge_id": _mk_edge_id("backlink", tid, note_id, "note", "derived:backlink:v1"),
-            "kind": "backlink", "relation": "backlink", "scope": "note",
-            "source_id": tid, "target_id": note_id, "note_id": note_id,
-            "src_note_id": tid, "dst_note_id": note_id,
-            "provenance": "rule", "rule_id": "derived:backlink:v1", "confidence": 0.9,
-        })
-
-    # --- Type‑Defaults je expliziter Referenz --------------------------------
-    defaults = [d for d in _edge_defaults_for(note_type) if d and d != "references"]
-    if defaults:
-        for e in explicit_refs + ([ ] if not include_note_scope_refs else []):
-            # wir nutzen die bereits erzeugten explicit‑Edges als Vorlage
-            src = e["source_id"]; tgt = e["target_id"]
-            scope = e.get("scope", "chunk")
-            s_note = e.get("src_note_id") or note_id
-            s_chunk = e.get("src_chunk_id")
-            t_note = e.get("dst_note_id") or tgt
-            for rel in defaults:
-                rule_id = f"type_default:{(note_type or 'unknown')}:{rel}:v1"
-                edges.append({
-                    "edge_id": _mk_edge_id(rel, src, tgt, scope, rule_id),
-                    "kind": rel, "relation": rel, "scope": scope,
-                    "source_id": src, "target_id": tgt, "note_id": s_note,
-                    "src_note_id": s_note, "src_chunk_id": s_chunk,
-                    "dst_note_id": t_note,
-                    "provenance": "rule", "rule_id": rule_id, "confidence": 0.7,
-                })
-
-    # --- Dedupe & Return -----------------------------------------------------
-    return _dedupe(edges)
diff --git a/app/core/edges_writer.py b/app/core/edges_writer.py
deleted file mode 100644
index 066e44a..0000000
--- a/app/core/edges_writer.py
+++ /dev/null
@@ -1,94 +0,0 @@
-# app/core/edges_writer.py
-from __future__ import annotations
-import hashlib
-from typing import Dict, List, Iterable, Tuple
-
-try:
-    # Dein Modul mit der Schemadefinition und der Builder-Funktion
-    from app.core.edges import build_edges_for_note  # noqa: F401
-except Exception as e:
-    raise RuntimeError("Konnte app.core.edges nicht importieren. "
-                       "Bitte sicherstellen, dass app/core/edges.py vorhanden ist.") from e
-
-def _edge_uid(kind: str, source_id: str, target_id: str, scope: str) -> str:
-    """
-    Deterministische, kurze ID für eine Edge.
-    Kollisionen sind praktisch ausgeschlossen (BLAKE2s über den Kanonischen Schlüssel).
-    """
-    key = f"{kind}|{source_id}|{target_id}|{scope}"
-    return hashlib.blake2s(key.encode("utf-8"), digest_size=12).hexdigest()
-
-def ensure_edges_collection(qdrant_client, collection: str) -> None:
-    """
-    Legt die Edge-Collection an, falls sie nicht existiert.
-    Minimal: 1D-Vector (Dummy), Cosine. Payload-only-Collections sind je nach Qdrant-Version heikel.
-    """
-    from qdrant_client.http import models as qm
-
-    existing = [c.name for c in qdrant_client.get_collections().collections]
-    if collection in existing:
-        return
-
-    qdrant_client.recreate_collection(
-        collection_name=collection,
-        vectors_config=qm.VectorParams(size=1, distance=qm.Distance.COSINE),
-        on_disk_payload=True,
-    )
-
-def edges_from_note(
-    note_id: str,
-    chunk_payloads: List[Dict],
-    note_level_refs: Iterable[str] | None,
-    *,
-    include_note_scope_refs: bool = False,
-) -> List[Dict]:
-    """
-    Ruft deinen Edge-Builder auf und gibt die (deduplizierten) Edge-Payloads zurück.
-    Keine Schemaänderung – exakt das aus app/core/edges.py.
-    """
-    return build_edges_for_note(
-        note_id=note_id,
-        chunk_payloads=chunk_payloads,
-        note_level_refs=list(note_level_refs or []),
-        include_note_scope_refs=include_note_scope_refs,
-    )
-
-def upsert_edges(
-    qdrant_client,
-    collection: str,
-    edge_payloads: List[Dict],
-) -> Tuple[int, int]:
-    """
-    Schreibt Edges als Points in Qdrant.
-    - id: deterministisch aus (kind, source_id, target_id, scope)
-    - vector: [0.0] Dummy
-    - payload: Edge-Dict (unverändert, siehe Schema in app/core/edges.py)
-    Gibt (anzahl_points, anzahl_unique_keys) zurück.
-    """
-    from qdrant_client.models import PointStruct
-
-    if not edge_payloads:
-        return 0, 0
-
-    points = []
-    seen = set()
-    for e in edge_payloads:
-        key = (e.get("kind"), e.get("source_id"), e.get("target_id"), e.get("scope"))
-        if key in seen:
-            continue
-        seen.add(key)
-        eid = _edge_uid(*key)
-        points.append(
-            PointStruct(
-                id=eid,
-                vector=[0.0],
-                payload=e,
-            )
-        )
-
-    if not points:
-        return 0, 0
-
-    ensure_edges_collection(qdrant_client, collection)
-    qdrant_client.upsert(collection_name=collection, points=points)
-    return len(points), len(seen)
diff --git a/app/core/env_vars.py b/app/core/env_vars.py
deleted file mode 100644
index b1f2d4b..0000000
--- a/app/core/env_vars.py
+++ /dev/null
@@ -1,103 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-"""
-Datei: app/core/env_vars.py
-Version: 1.1.0 (2025-11-08)
-
-Zweck
-  Einheitliche Auflösung von ENV-Variablen (Prefix, Qdrant, Embeddings, Hashing)
-  mit Abwärtskompatibilität.
-
-Grundsatz
-  - Für Qdrant-Funktionen ist 'COLLECTION_PREFIX' der Primärschlüssel.
-  - 'MINDNET_PREFIX' bleibt für App-/UI-/Exporter-Kontexte nutzbar.
-  - Fallbacks sorgen dafür, dass ältere Umgebungen weiter funktionieren.
-
-Wichtig
-  - Lädt optional eine .env (wenn python-dotenv verfügbar ist).
-  - Überschreibt keine bereits gesetzten OS-Variablen (override=False).
-"""
-from __future__ import annotations
-
-import os
-from typing import Optional, Dict
-
-# Optional: .env automatisch laden (ohne Hard-Fail, falls nicht vorhanden)
-try:
-    from dotenv import load_dotenv, find_dotenv  # type: ignore
-    _p = find_dotenv()
-    if _p:
-        load_dotenv(_p, override=False)
-except Exception:
-    pass
-
-# -------- Prefix-Auflösung --------
-
-def get_collection_prefix(cli_override: Optional[str] = None) -> str:
-    """
-    Für Qdrant-relevante Funktionen:
-      1) CLI-Override (--prefix)
-      2) ENV COLLECTION_PREFIX
-      3) ENV MINDNET_PREFIX   (Fallback)
-      4) 'mindnet'            (Default)
-    """
-    if cli_override and str(cli_override).strip():
-        return str(cli_override).strip()
-    return (
-        os.getenv("COLLECTION_PREFIX")
-        or os.getenv("MINDNET_PREFIX")
-        or "mindnet"
-    )
-
-def get_mindnet_prefix(cli_override: Optional[str] = None) -> str:
-    """
-    Für App-/UI-/Exporter-Kontexte:
-      1) CLI-Override (--prefix)
-      2) ENV MINDNET_PREFIX
-      3) ENV COLLECTION_PREFIX (Fallback)
-      4) 'mindnet'
-    """
-    if cli_override and str(cli_override).strip():
-        return str(cli_override).strip()
-    return (
-        os.getenv("MINDNET_PREFIX")
-        or os.getenv("COLLECTION_PREFIX")
-        or "mindnet"
-    )
-
-def get_prefix(cli_override: Optional[str] = None, target: str = "qdrant") -> str:
-    """
-    Universelle Hülle (abwärtskompatibel):
-      target='qdrant'  -> get_collection_prefix
-      target='app'     -> get_mindnet_prefix
-    """
-    if target.lower() == "app":
-        return get_mindnet_prefix(cli_override)
-    return get_collection_prefix(cli_override)
-
-# -------- Qdrant / Embeddings / Hashing --------
-
-def get_qdrant_url(default: str = "http://127.0.0.1:6333") -> str:
-    return os.getenv("QDRANT_URL", default)
-
-def get_qdrant_api_key(default: str = "") -> str:
-    return os.getenv("QDRANT_API_KEY", default)
-
-def get_vector_dim(default: int = 384) -> int:
-    try:
-        return int(os.getenv("VECTOR_DIM", str(default)))
-    except Exception:
-        return default
-
-def get_embed_url(default: Optional[str] = None) -> Optional[str]:
-    return os.getenv("EMBED_URL", default)
-
-def get_hash_env() -> Dict[str, str]:
-    """
-    Liefert die Hash-Konfiguration (nur Aggregation; die Auswertung bleibt in den Skripten).
-    """
-    return {
-        "MINDNET_HASH_COMPARE": os.getenv("MINDNET_HASH_COMPARE", ""),
-        "MINDNET_HASH_SOURCE": os.getenv("MINDNET_HASH_SOURCE", ""),
-        "MINDNET_HASH_NORMALIZE": os.getenv("MINDNET_HASH_NORMALIZE", ""),
-    }
diff --git a/app/core/ranking.py b/app/core/ranking.py
deleted file mode 100644
index e9105f3..0000000
--- a/app/core/ranking.py
+++ /dev/null
@@ -1,56 +0,0 @@
-"""
-app/core/ranking.py — Kombiniertes Scoring (WP-04)
-
-Zweck:
-    Zusammenführen von semantischem Score (normalisiert), Edge-Bonus und
-    Centrality-Bonus in einen Gesamtscore für die Ergebnisreihung.
-Kompatibilität:
-    Python 3.12+
-Version:
-    0.1.0  (Erstanlage)
-Stand:
-    2025-10-07
-Bezug:
-    WP-04 Ranking-Formel (w_sem, w_edge, w_cent)
-Nutzung:
-    from app.core.ranking import combine_scores
-Änderungsverlauf:
-    0.1.0 (2025-10-07) – Erstanlage.
-"""
-
-from __future__ import annotations
-from typing import List, Tuple, Dict
-
-
-def normalize_scores(values: List[float]) -> List[float]:
-    """Min-Max-Normalisierung über die Kandidatenmenge (Fallback 0.5 bei Konstanz)."""
-    if not values:
-        return values
-    lo, hi = min(values), max(values)
-    if hi - lo < 1e-9:
-        return [0.5] * len(values)
-    return [(v - lo) / (hi - lo) for v in values]
-
-
-def combine_scores(
-    hits: List[Tuple[str, float, dict]],  # (id, semantic_score, payload)
-    edge_bonus_map: Dict[str, float],
-    centrality_map: Dict[str, float],
-    w_sem: float = 0.70,
-    w_edge: float = 0.25,
-    w_cent: float = 0.05,
-) -> List[Tuple[str, float, float, float, float]]:
-    """
-    Liefert Liste von (point_id, total_score, edge_bonus, centrality_bonus, raw_semantic_score),
-    absteigend nach total_score sortiert.
-    """
-    sem = [h[1] for h in hits]
-    sem_n = normalize_scores(sem)
-    out = []
-    for (pid, s, payload), s_norm in zip(hits, sem_n):
-        e = edge_bonus_map.get(pid, 0.0)
-        c = centrality_map.get(pid, 0.0)
-        total = w_sem * s_norm + w_edge * e + w_cent * c
-        out.append((pid, total, e, c, s))
-    out.sort(key=lambda t: t[1], reverse=True)
-    return out
diff --git a/app/core/retriever_config.py b/app/core/retriever_config.py
deleted file mode 100644
index fcf7bc7..0000000
--- a/app/core/retriever_config.py
+++ /dev/null
@@ -1,116 +0,0 @@
-"""app/core/retriever_config.py
----------------------------------
-Zentrale Konfiguration für den mindnet-Retriever (WP-04).
-
-Zweck:
-    - Lädt config/retriever.yaml (falls vorhanden) oder nutzt sinnvolle Defaults.
-    - Bietet einen gecachten Zugriff auf die Retriever-Config für
-      andere Module (z. B. graph_adapter, retriever).
-
-Hinweis zur Weiterentwicklung (Selbstjustierung):
-    - Die hier definierten Parameter sind so gewählt, dass sie später
-      durch ein Feedback-/Learning-to-Rank-Modell überschrieben werden
-      können, ohne die restliche Architektur anzupassen.
-"""
-
-from __future__ import annotations
-
-import os
-from dataclasses import dataclass
-from functools import lru_cache
-from pathlib import Path
-from typing import Dict
-
-try:
-    import yaml  # type: ignore
-except Exception:  # pragma: no cover - Fallback, falls PyYAML nicht installiert ist.
-    yaml = None  # type: ignore
-
-@dataclass(frozen=True)
-class RetrieverConfig:
-    semantic_scale: float
-    edge_scale: float
-    centrality_scale: float
-    edge_weights: Dict[str, float]
-
-@lru_cache
-def get_retriever_config() -> RetrieverConfig:
-    """Lädt die Retriever-Konfiguration (YAML + Defaults).
-
-    Reihenfolge:
-        1. Defaults (sinnvoll gewählte Startwerte).
-        2. Optional: config/retriever.yaml bzw. Pfad aus ENV
-           MINDNET_RETRIEVER_CONFIG überschreibt die Defaults.
-
-    Die Funktion ist bewusst gecached, da sich die Konfiguration zur
-    Laufzeit üblicherweise nicht ändert. Für dynamisches Nachladen
-    könnte der Cache explizit geleert werden.
-    """
-
-    # 1) Defaults – bewusst konservativ gewählt.
-    semantic_scale = 1.0
-    edge_scale = 1.0
-    centrality_scale = 1.0
-
-    edge_weights: Dict[str, float] = {
-        # Wissens-Kanten
-        "depends_on": 1.0,
-        "related_to": 0.7,
-        "similar_to": 0.7,
-        "references": 0.5,
-        # Struktur-Kanten
-        "belongs_to": 0.2,
-        "next": 0.1,
-        "prev": 0.1,
-        # Sonstige / technische Kanten
-        "backlink": 0.2,
-        "references_at": 0.2,
-    }
-
-    # 2) Optional: YAML-Konfiguration laden
-    cfg_path_env = os.getenv("MINDNET_RETRIEVER_CONFIG")
-    if cfg_path_env:
-        cfg_path = Path(cfg_path_env)
-    else:
-        # Project-Root = zwei Ebenen über app/core/
-        cfg_path = Path(__file__).resolve().parents[2] / "config" / "retriever.yaml"
-
-    if yaml is not None and cfg_path.exists():
-        try:
-            data = yaml.safe_load(cfg_path.read_text(encoding="utf-8")) or {}
-        except Exception:
-            data = {}
-
-        retr = data.get("retriever") or {}
-
-        # Skalenwerte überschreiben, falls angegeben
-        try:
-            semantic_scale = float(retr.get("semantic_scale", semantic_scale))
-        except (TypeError, ValueError):
-            pass
-
-        try:
-            edge_scale = float(retr.get("edge_scale", edge_scale))
-        except (TypeError, ValueError):
-            pass
-
-        try:
-            centrality_scale = float(retr.get("centrality_scale", centrality_scale))
-        except (TypeError, ValueError):
-            pass
-
-        # Edge-Gewichte je Kanten-Typ
-        ew_cfg = retr.get("edge_weights") or {}
-        if isinstance(ew_cfg, dict):
-            for k, v in ew_cfg.items():
-                try:
-                    edge_weights[str(k)] = float(v)
-                except (TypeError, ValueError):
-                    continue
-
-    return RetrieverConfig(
-        semantic_scale=semantic_scale,
-        edge_scale=edge_scale,
-        centrality_scale=centrality_scale,
-        edge_weights=edge_weights,
-    )
diff --git a/app/core/schema_loader.py b/app/core/schema_loader.py
deleted file mode 100644
index 019755f..0000000
--- a/app/core/schema_loader.py
+++ /dev/null
@@ -1,22 +0,0 @@
-from __future__ import annotations
-import json
-import os
-from functools import lru_cache
-from jsonschema import Draft202012Validator, RefResolver
-
-SCHEMAS_DIR = os.getenv("SCHEMAS_DIR", os.path.join(os.path.dirname(os.path.dirname(__file__)), "..", "schemas"))
-
-@lru_cache(maxsize=16)
-def load_schema(name: str) -> dict:
-    # name: "note.schema.json" | "chunk.schema.json" | "edge.schema.json"
-    path = os.path.join(SCHEMAS_DIR, name)
-    if not os.path.isfile(path):
-        raise FileNotFoundError(f"Schema not found: {path}")
-    with open(path, "r", encoding="utf-8") as f:
-        return json.load(f)
-
-@lru_cache(maxsize=16)
-def get_validator(name: str) -> Draft202012Validator:
-    schema = load_schema(name)
-    resolver = RefResolver.from_schema(schema)
-    return Draft202012Validator(schema, resolver=resolver)
diff --git a/app/core/validate_note.py b/app/core/validate_note.py
deleted file mode 100644
index 1fa77a6..0000000
--- a/app/core/validate_note.py
+++ /dev/null
@@ -1,16 +0,0 @@
-from __future__ import annotations
-from typing import Dict
-from jsonschema import ValidationError
-from .schema_loader import get_validator
-
-NOTE_SCHEMA_NAME = "note.schema.json"
-
-def validate_note_payload(payload: Dict) -> None:
-    validator = get_validator(NOTE_SCHEMA_NAME)
-    errors = sorted(validator.iter_errors(payload), key=lambda e: e.path)
-    if errors:
-        msgs = []
-        for e in errors:
-            loc = ".".join([str(x) for x in e.path]) or "<root>"
-            msgs.append(f"{loc}: {e.message}")
-        raise ValidationError(" | ".join(msgs))
diff --git a/app/embed_server.py b/app/embed_server.py
deleted file mode 100644
index fdc3213..0000000
--- a/app/embed_server.py
+++ /dev/null
@@ -1,40 +0,0 @@
-"""
-Version 1
-"""
-from __future__ import annotations
-from fastapi import FastAPI, HTTPException
-from pydantic import BaseModel
-from typing import List, Optional
-from sentence_transformers import SentenceTransformer
-
-app = FastAPI(title="mindnet-embed", version="1.0")
-
-MODEL_NAME = "sentence-transformers/all-MiniLM-L6-v2"  # 384-dim
-_model: SentenceTransformer | None = None
-
-class EmbedIn(BaseModel):
-    model: Optional[str] = None
-    inputs: List[str]
-
-class EmbedOut(BaseModel):
-    embeddings: List[List[float]]
-
-@app.on_event("startup")
-def _load_model():
-    global _model
-    _model = SentenceTransformer(MODEL_NAME)
-
-@app.get("/health")
-def health():
-    return {"ok": True, "model": MODEL_NAME, "dim": 384}
-
-@app.post("/embed", response_model=EmbedOut)
-def embed(payload: EmbedIn) -> EmbedOut:
-    if _model is None:
-        raise HTTPException(status_code=503, detail="Model not loaded")
-    if not payload.inputs:
-        return EmbedOut(embeddings=[])
-    vecs = _model.encode(payload.inputs, normalize_embeddings=False).tolist()
-    if any(len(v) != 384 for v in vecs):
-        raise HTTPException(status_code=500, detail="Embedding size mismatch (expected 384)")
-    return EmbedOut(embeddings=vecs)
diff --git a/app/graph/service.py b/app/graph/service.py
deleted file mode 100644
index 40b430e..0000000
--- a/app/graph/service.py
+++ /dev/null
@@ -1,172 +0,0 @@
-#!/usr/bin/env python3
-# -*- coding: utf-8 -*-
-"""
-Modul: app/graph/service.py
-Version: 0.1.0
-Datum: 2025-09-10
-
-Zweck
------
-Leichtgewichtiger Graph-Layer über Qdrant:
-  - get_note(note_id)
-  - get_chunks(note_id)
-  - neighbors(source_id, kinds=[...], scope=['note','chunk'], depth=1)
-  - walk_bfs(source_id, kinds, max_depth)
-  - context_for_note(note_id, max_neighbors): heuristische Kontextsammlung
-
-Hinweise
---------
-- Nutzt die bestehenden Collections <prefix>_notes/_chunks/_edges.
-- Edges werden über Payload-Felder (`kind`, `source_id`, `target_id`) abgefragt.
-"""
-from __future__ import annotations
-from typing import List, Dict, Any, Optional, Iterable, Set, Tuple
-from qdrant_client.http import models as rest
-from app.core.qdrant import QdrantConfig, get_client
-
-def _cols(prefix: str):
-    return f"{prefix}_notes", f"{prefix}_chunks", f"{prefix}_edges"
-
-class GraphService:
-    def __init__(self, cfg: Optional[QdrantConfig] = None, prefix: Optional[str] = None):
-        self.cfg = cfg or QdrantConfig.from_env()
-        if prefix:
-            self.cfg.prefix = prefix
-        self.client = get_client(self.cfg)
-        self.notes_col, self.chunks_col, self.edges_col = _cols(self.cfg.prefix)
-
-    # ------------------------ fetch helpers ------------------------
-    def _scroll(self, col: str, flt: Optional[rest.Filter] = None, limit: int = 256):
-        out = []
-        nextp = None
-        while True:
-            pts, nextp = self.client.scroll(
-                collection_name=col,
-                with_payload=True,
-                with_vectors=False,
-                limit=limit,
-                offset=nextp,
-                scroll_filter=flt,
-            )
-            if not pts:
-                break
-            out.extend(pts)
-            if nextp is None:
-                break
-        return out
-
-    # ------------------------ public API ---------------------------
-    def get_note(self, note_id: str) -> Optional[Dict[str, Any]]:
-        f = rest.Filter(must=[rest.FieldCondition(key="note_id", match=rest.MatchValue(value=note_id))])
-        pts, _ = self.client.scroll(self.notes_col, with_payload=True, with_vectors=False, limit=1, scroll_filter=f)
-        return (pts[0].payload or None) if pts else None
-
-    def get_chunks(self, note_id: str) -> List[Dict[str, Any]]:
-        f = rest.Filter(must=[rest.FieldCondition(key="note_id", match=rest.MatchValue(value=note_id))])
-        pts = self._scroll(self.chunks_col, f)
-        # Sortierung analog Export
-        def key(pl):
-            p = pl.payload or {}
-            s = p.get("seq") or 0
-            ci = p.get("chunk_index") or 0
-            n = 0
-            cid = p.get("chunk_id") or ""
-            if isinstance(cid, str) and "#" in cid:
-                try:
-                    n = int(cid.rsplit("#", 1)[-1])
-                except Exception:
-                    n = 0
-            return (int(s), int(ci), n)
-        pts_sorted = sorted(pts, key=key)
-        return [p.payload or {} for p in pts_sorted]
-
-    def neighbors(self, source_id: str, kinds: Optional[Iterable[str]] = None,
-                  scope: Optional[Iterable[str]] = None, depth: int = 1) -> Dict[str, List[Dict[str, Any]]]:
-        """
-        Liefert eingehende & ausgehende Nachbarn (nur nach kind gefiltert).
-        depth==1: direkte Kanten.
-        """
-        kinds = list(kinds) if kinds else None
-        must = [rest.FieldCondition(key="source_id", match=rest.MatchValue(value=source_id))]
-        if kinds:
-            must.append(rest.FieldCondition(key="kind", match=rest.MatchAny(any=kinds)))
-        f = rest.Filter(must=must)
-        edges = self._scroll(self.edges_col, f)
-        out = {"out": [], "in": []}
-        for e in edges:
-            out["out"].append(e.payload or {})
-        # Inverse Richtung (eingehend)
-        must_in = [rest.FieldCondition(key="target_id", match=rest.MatchValue(value=source_id))]
-        if kinds:
-            must_in.append(rest.FieldCondition(key="kind", match=rest.MatchAny(any=kinds)))
-        f_in = rest.Filter(must=must_in)
-        edges_in = self._scroll(self.edges_col, f_in)
-        for e in edges_in:
-            out["in"].append(e.payload or {})
-        return out
-
-    def walk_bfs(self, source_id: str, kinds: Iterable[str], max_depth: int = 2) -> Set[str]:
-        visited: Set[str] = {source_id}
-        frontier: Set[str] = {source_id}
-        kinds = list(kinds)
-        for _ in range(max_depth):
-            nxt: Set[str] = set()
-            for s in frontier:
-                neigh = self.neighbors(s, kinds=kinds)
-                for e in neigh["out"]:
-                    t = e.get("target_id")
-                    if isinstance(t, str) and t not in visited:
-                        visited.add(t)
-                        nxt.add(t)
-            frontier = nxt
-            if not frontier:
-                break
-        return visited
-
-    def context_for_note(self, note_id: str, kinds: Iterable[str] = ("references","backlink"), max_neighbors: int = 12) -> Dict[str, Any]:
-        """
-        Heuristischer Kontext: eigene Chunks + Nachbarn nach Kantenarten, dedupliziert.
-        """
-        note = self.get_note(note_id) or {}
-        chunks = self.get_chunks(note_id)
-        neigh = self.neighbors(note_id, kinds=list(kinds))
-        targets = []
-        for e in neigh["out"]:
-            t = e.get("target_id")
-            if isinstance(t, str):
-                targets.append(t)
-        for e in neigh["in"]:
-            s = e.get("source_id")
-            if isinstance(s, str):
-                targets.append(s)
-        # de-dupe
-        seen = set()
-        uniq = []
-        for t in targets:
-            if t not in seen:
-                seen.add(t)
-                uniq.append(t)
-        uniq = uniq[:max_neighbors]
-        neighbor_notes = [self.get_note(t) for t in uniq]
-        return {
-            "note": note,
-            "chunks": chunks,
-            "neighbors": [n for n in neighbor_notes if n],
-            "edges_out": neigh["out"],
-            "edges_in": neigh["in"],
-        }
-
-# Optional: Mini-CLI
-if __name__ == "__main__":  # pragma: no cover
-    import argparse, json
-    ap = argparse.ArgumentParser()
-    ap.add_argument("--prefix", help="Collection-Prefix (überschreibt ENV)")
-    ap.add_argument("--note-id", required=True)
-    ap.add_argument("--neighbors", action="store_true", help="Nur Nachbarn anzeigen")
-    args = ap.parse_args()
-    svc = GraphService(prefix=args.prefix)
-    if args.neighbors:
-        out = svc.neighbors(args.note_id, kinds=["references","backlink","prev","next","belongs_to"])
-    else:
-        out = svc.context_for_note(args.note_id)
-    print(json.dumps(out, ensure_ascii=False, indent=2))
diff --git a/app/main.py b/app/main.py
index 521bc9a..1e2969c 100644
--- a/app/main.py
+++ b/app/main.py
@@ -10,8 +10,8 @@ LAST_ANALYSIS: 2025-12-15
 from __future__ import annotations
 from fastapi import FastAPI
 from .config import get_settings
-from .routers.embed_router import router as embed_router
-from .routers.qdrant_router import router as qdrant_router
+#from .routers.embed_router import router as embed_router
+#from .routers.qdrant_router import router as qdrant_router
 
 from .routers.query import router as query_router
 from .routers.graph import router as graph_router
@@ -35,8 +35,8 @@ def create_app() -> FastAPI:
     def healthz():
         return {"status": "ok", "qdrant": s.QDRANT_URL, "prefix": s.COLLECTION_PREFIX}
 
-    app.include_router(embed_router)
-    app.include_router(qdrant_router)
+#    app.include_router(embed_router)
+#    app.include_router(qdrant_router)
 
     app.include_router(query_router, prefix="/query", tags=["query"])
     app.include_router(graph_router, prefix="/graph", tags=["graph"])