diff --git a/backend/blocks.py b/backend/blocks.py
index 96aa5a1..c6e82e8 100644
--- a/backend/blocks.py
+++ b/backend/blocks.py
@@ -656,7 +656,18 @@ def _finder_material(folder, sources: list[str] | None, queries: list[str]) -> t
     return "", "Backed, not invented. Verify uncertain points via web search.", ("files" if folder else "full")
 
 
-def _build_research_prompt(topic: str, out_path: Path, instructions: str, type: str, folder: Path | None, fokus: str = "", section: str = "") -> str:
+def material_folder(topic: str) -> Path | None:
+    """Korpus fürs Inline-Material: echte Quelle (uni/projekt/link) oder bei thema die
+    Fundstellen der Research-Reader (arbeit/material/*.txt). Nur für Evidence-Packs —
+    Konsens-Gate und QA messen unverändert gegen die konfigurierte Quelle (Messinvarianz)."""
+    f = source_folder(topic)
+    if f is not None:
+        return f
+    d = arbeit_dir(topic) / "material"
+    return d if d.is_dir() and any(d.glob("*.txt")) else None
+
+
+def _build_research_prompt(topic: str, out_path: Path, instructions: str, type: str, folder: Path | None, fokus: str = "", section: str = "", material_path: Path | None = None) -> str:
     if section:
         # Section mode (uni/projekt): text directly in the prompt → small context, no file reading.
         source = section
@@ -664,6 +675,13 @@ def _build_research_prompt(topic: str, out_path: Path, instructions: str, type:
         source = _prompt(_SOURCE_TEMPLATE[type], project=folder)
     else:
         source = _prompt("Blocks-Source-Thema", topic=topic)
+    if material_path is not None:
+        # thema: Fundstellen sichern — sie werden das Inline-Material der Folgeschritte
+        # (Finder/Facts liefen sonst mit eigener Websuche → Reasoning-Schleifen, Retries)
+        source += ("\n\nALSO write the file " + str(material_path) + " as you research: for every "
+                   "source you use, append one line with the URL followed by the relevant excerpt "
+                   "(plain text). Later steps back all facts ONLY against this material — "
+                   "an excerpt you skip here cannot back anything later.")
     return _prompt(
         "Blocks-Research",
         topic=topic, source=source, blocks_path=out_path, focus=fokus, extra=_extra(instructions),
@@ -790,6 +808,7 @@ async def _subblocks_block(ctx: GenContext, set_p, files: dict, entries: dict, i
     topic, provider, is_cancelled = ctx.topic, ctx.provider, ctx.is_cancelled
     work_dir = files["arbeit"]
     folder = source_folder(topic)
+    mat = material_folder(topic)  # thema: Research-Fundstellen als Inline-Korpus
     caps = "files" if folder else "full"
     # Source for the evidence exam in the clarify step (discards invented/unsupportable subs).
     _type = load_source(topic).get("type", "thema")
@@ -896,7 +915,7 @@ async def _subblocks_block(ctx: GenContext, set_p, files: dict, entries: dict, i
         # Material once per package (excerpts are round-invariant; one query per block
         # keeps the coverage guarantee of _evidence_pack).
         material, backing, round_caps = await asyncio.to_thread(
-            _finder_material, folder, sources, [str(entries[num]) for num in chunk])
+            _finder_material, mat, sources, [str(entries[num]) for num in chunk])
         start = time.monotonic()
         round_n = 0
         while not is_cancelled():
@@ -1031,9 +1050,9 @@ async def _subblocks_block(ctx: GenContext, set_p, files: dict, entries: dict, i
         if pending:
             # Inline evidence: corpus excerpts in the prompt (no self-research); the judge
             # answers as TEXT, the engine persists the j-file (resume + majority unchanged).
-            ev = _evidence_pack(folder, sources,
+            ev = _evidence_pack(mat, sources,
                                 [title_by_num[num] for num in chunk]
-                                + [s for num in chunk for s in shown_by_num.get(num, [])]) if folder else ""
+                                + [s for num in chunk for s in shown_by_num.get(num, [])]) if mat else ""
             j_source = _prompt("Blocks-Source-Inline", excerpts=ev) if ev else source
 
             def _sink(result, p):
@@ -1147,7 +1166,7 @@ async def _subblocks_block(ctx: GenContext, set_p, files: dict, entries: dict, i
                      "Subbausteine. Suche gezielt nach WEITEREN belegbaren Kernaspekten, die "
                      "oben fehlen. Nimm NUR auf, was die Quellen wirklich hergeben — nicht aufblähen.")
             material, backing, round_caps = await asyncio.to_thread(
-                _finder_material, folder, sources, [str(entries[num]) for num in lacking])
+                _finder_material, mat, sources, [str(entries[num]) for num in lacking])
             paths = [work_dir / f"subblock-x{k}-c{c}-{i}.md" for i in (1, 2, 3)]
             keys = [f"blocks-{topic}-{ns}subblock-x{k}-c{c}-{i}" for i in (1, 2, 3)]
             new = await _one_round(f"{lbl}Subblocks catch-up {c} X{k}", lacking, assignment, paths, keys, known, focus, material, backing, round_caps)
@@ -1494,7 +1513,7 @@ async def _luecken_runde(ctx: GenContext, files: dict, title: str, luecken: list
     known = ("\n\nBEREITS ERFASST — liste diese NICHT erneut:\n"
              + "\n".join(f"- {s}" for s in have)) if have else ""
     material, backing, caps = await asyncio.to_thread(
-        _finder_material, folder, sources, [title] + list(luecken))
+        _finder_material, material_folder(topic), sources, [title] + list(luecken))
     paths = [work_dir / f"luecken-{ns}r1-{i}.md" for i in (1, 2, 3)]
     slots = [{
         "key": f"blocks-{topic}-{ns}luecken-r1-{i}",
@@ -1901,7 +1920,8 @@ async def _facts_block(ctx, set_p, files: dict, raw: dict, q: dict, folder, inst
         Zeichen) und endeten mit leerem Turn — Retry-Wellen à 60–90 s seriell pro Block.
         No-Tool-Calls mit Inline-Material hatten 0 solcher Fälle (Muster: Facts-Check).
         Fail-open: ohne Treffer bleibt die alte Selbst-Recherche."""
-        ev = _evidence_pack(folder, sources, queries) if folder else ""
+        mat = material_folder(topic)
+        ev = _evidence_pack(mat, sources, queries) if mat else ""
         if ev:
             return _prompt("Blocks-Source-Inline", excerpts=ev), "none"
         return source, caps
@@ -1974,7 +1994,8 @@ async def _facts_block(ctx, set_p, files: dict, raw: dict, q: dict, folder, inst
         cites = [bf.get("source", "") for fm in per.values() for fk in fm.values()
                  for bf in fk.get("cited_facts", [])]
         fallback = [blocks[i][0] for i in idxs] + [fk["sub"] for fm in per.values() for fk in fm.values()]
-        ev = _cited_evidence(folder, sources, cites, fallback) if folder else ""
+        mat = material_folder(topic)
+        ev = _cited_evidence(mat, sources, cites, fallback) if mat else ""
         c_source = _prompt("Blocks-Source-Inline", excerpts=ev) if ev else source
         pending = [j for j in panel if _facts_check_schema(_json_file(chk_path(ci, j))) is None]
         tmap = {asyncio.create_task(
diff --git a/backend/board_inventory.py b/backend/board_inventory.py
index a740c1b..3cef658 100644
--- a/backend/board_inventory.py
+++ b/backend/board_inventory.py
@@ -209,6 +209,10 @@ async def _research_once(ctx: GenContext, flow: Flow, q: dict, folder, instructi
     work_dir = flow.work_dir
     caps = "files" if folder else "full"
     p = work_dir / f"research-{tag}.md"
+    mp = None
+    if folder is None:  # thema: Fundstellen als Material für die Inline-Folgeschritte sichern
+        (work_dir / "material").mkdir(parents=True, exist_ok=True)
+        mp = work_dir / "material" / f"research-{tag}.txt"
     stop = asyncio.Event()
     buf: list[str] = []  # assistant text streamed live from the JSON events
 
@@ -237,7 +241,7 @@ async def _research_once(ctx: GenContext, flow: Flow, q: dict, folder, instructi
             await run_single_slot(
                 ctx, f"Research {tag}", key=f"blocks-{ctx.topic}-research-{tag}",
                 prompt=_build_research_prompt(ctx.topic, p, instructions, q["type"], folder,
-                                              fokus=fokus, section=section),
+                                              fokus=fokus, section=section, material_path=mp),
                 role="quick", capabilities=caps,
                 payload=(lambda result, p=p: _file_payload(p)),
                 timeout=RESEARCH_RUNTIME, on_line=_on_line,
diff --git a/backend/tests/test_subblocks.py b/backend/tests/test_subblocks.py
index 84af8e5..94678df 100644
--- a/backend/tests/test_subblocks.py
+++ b/backend/tests/test_subblocks.py
@@ -372,6 +372,41 @@ async def test_clarify_inline_evidence_no_tools(sub_env, monkeypatch, tmp_path):
     assert list(tmp_path.glob("subblock-final-*-j*.md"))  # Engine persistiert die Judge-Antwort
 
 
+async def test_thema_nutzt_research_material_inline(sub_env, monkeypatch, tmp_path):
+    """thema mit Research-Fundstellen (arbeit/material/*.txt): Finder bekommt sie inline
+    und läuft ohne Tools — vorher eigene Websuche pro Call (Reasoning-Schleifen, Retries)."""
+    db, ctx, files = sub_env
+    monkeypatch.setattr(blx, "source_folder", lambda t: None)
+    md = tmp_path / "arbeit" / "material"
+    md.mkdir(parents=True)
+    (md / "research-1.txt").write_text(
+        "https://example.org/alpha\nAlpha Grundlagen: der Kernbegriff, gut belegt.\n",
+        encoding="utf-8")
+    monkeypatch.setattr(blx, "arbeit_dir", lambda t: tmp_path / "arbeit")
+    fake, prompts = _mk_race({1: ["Alpha Grundlagen"], 2: ["Alpha Grundlagen"]})
+    monkeypatch.setattr(blx, "_race", fake)
+    raw = await blx._subblocks_block(ctx, lambda *a, **k: None, files, {1: "Alpha — Grundkonzept"},
+                                     "", wipe=False, ns="x-")
+    assert raw == {"Alpha": ["Alpha Grundlagen"]}
+    finders = [s for s in fake.slots_seen if "-r1-" in s["key"]]
+    assert finders and all(s["capabilities"] == "none" for s in finders)
+    assert "── research-1.txt" in finders[0]["prompt"]  # Fundstellen inline
+
+
+def test_material_folder_fallbacks(monkeypatch, tmp_path):
+    """Echte Quelle gewinnt; sonst arbeit/material mit Inhalt; sonst None."""
+    monkeypatch.setattr(blx, "source_folder", lambda t: tmp_path / "quelle")
+    assert blx.material_folder("t") == tmp_path / "quelle"
+    monkeypatch.setattr(blx, "source_folder", lambda t: None)
+    monkeypatch.setattr(blx, "arbeit_dir", lambda t: tmp_path / "arbeit")
+    assert blx.material_folder("t") is None  # kein Material-Ordner
+    md = tmp_path / "arbeit" / "material"
+    md.mkdir(parents=True)
+    assert blx.material_folder("t") is None  # leer zählt nicht
+    (md / "research-1.txt").write_text("x", encoding="utf-8")
+    assert blx.material_folder("t") == md
+
+
 async def test_panel_2of3_kehrt_bei_einigkeit_zurueck(tmp_path):
     """Zwei übereinstimmende Verdicts → Rückkehr ohne den langsamen Dritten; sein
     Ergebnis wird detached nachpersistiert (Resume)."""
@@ -418,6 +453,7 @@ async def test_facts_check_inline_cited_evidence(sub_env, monkeypatch, tmp_path)
     die Check-Datei schreibt die Engine aus der Text-Antwort."""
     db, ctx, files = sub_env
     d = _corpus(tmp_path)
+    monkeypatch.setattr(blx, "source_folder", lambda t: d)
     facts = {"facts": [{"block": "Alpha", "subblock": "Sub Eins", "key_points": ["k"],
                         "prerequisites": "", "hurdles": "",
                         "cited_facts": [{"text": "T", "source": "Skript.txt, Z.2"}],
@@ -455,6 +491,7 @@ async def test_facts_find_inline_evidence_no_tools(sub_env, monkeypatch, tmp_pat
     verloren sich in Reasoning-Schleifen und endeten mit leerem Turn (Retry-Wellen)."""
     db, ctx, files = sub_env
     d = _corpus(tmp_path)
+    monkeypatch.setattr(blx, "source_folder", lambda t: d)
     seen = []
     facts = {"facts": [{"block": "Alpha", "subblock": "Sub Eins", "key_points": ["k"],
                         "prerequisites": "", "hurdles": "",