backend/media_storage.py

@@ -2,10 +2,24 @@
 from __future__ import annotations
 
 import os
+import re
 import shutil
+import unicodedata
 from pathlib import Path
 from typing import Any, Optional
 
+_CLUB_SLUG_TRANS = str.maketrans(
+    {
+        "ä": "ae",
+        "ö": "oe",
+        "ü": "ue",
+        "ß": "ss",
+        "Ä": "ae",
+        "Ö": "oe",
+        "Ü": "ue",
+    }
+)
+
 
 def _default_media_root() -> Path:
     return Path(os.getenv("MEDIA_ROOT", str(Path(__file__).resolve().parent / "media")))
@@ -82,6 +96,32 @@ def library_media_kind_dir(mime_type: Optional[str], ext: str) -> str:
     return "other"
 
 
+def library_club_path_segment(club_id: int, club_name: Optional[str]) -> str:
+    """
+    Ein Verzeichnissegment pro Verein: aus Anzeigenamen abgeleitet + „-c{id}“ für Eindeutigkeit
+    (Umbenennung, Kollisionen nach Slugify). Nur [a-z0-9-], keine Pfad-Sonderzeichen.
+    Fehlt der Name / Slug leer → „verein-c{id}“.
+    """
+    cid = int(club_id)
+    if cid < 1:
+        raise ValueError("club_id muss eine positive Ganzzahl sein")
+
+    raw = unicodedata.normalize("NFKC", (club_name or "").strip()).translate(_CLUB_SLUG_TRANS).lower()
+    raw = re.sub(r"[^a-z0-9]+", "-", raw)
+    raw = raw.strip("-")
+    if len(raw) > 48:
+        raw = raw[:48].rstrip("-")
+
+    if not raw:
+        base = f"verein-c{cid}"
+    else:
+        base = f"{raw}-c{cid}"
+
+    if not re.fullmatch(r"[a-z0-9]+(?:-[a-z0-9]+)*", base):
+        raise ValueError("Ungültiger abgeleiteter Vereins-Ordnername")
+    return base
+
+
 def path_under_media_root(media_root: Path, storage_key: str) -> Optional[Path]:
     """Gibt absoluten Pfad zurück oder None bei Path-Traversal."""
     key = (storage_key or "").strip().replace("\\", "/").lstrip("/")
@@ -103,13 +143,16 @@ def library_storage_key(
     *,
     uploader_profile_id: Optional[int] = None,
     mime_type: Optional[str] = None,
+    club_name: Optional[str] = None,
 ) -> str:
     """
     Relativer Speicherpfad unter MEDIA_ROOT für lokale media_assets.
 
     - official → library/official/{kind}/{sha256}{ext}
-    - club (vereinsgeteilt) → library/club/c{club_id}/{kind}/{sha256}{ext}
+    - club (vereinsgeteilt) → library/{vereins-segment}/{kind}/{sha256}{ext}
-    - private (nur Hochlader, Governance unverändert) → library/club/c{club_id}/u{profile}/{kind}/{sha256}{ext}
+    - private (nur Hochlader) → library/{vereins-segment}/u{profile}/{kind}/{sha256}{ext}
+
+    Vereins-Segment: aus club_name abgeleitet + „-c{club_id}“ — siehe library_club_path_segment.
 
     kind ∈ {image, video, pdf, other} — siehe library_media_kind_dir.
 
@@ -141,14 +184,15 @@ def library_storage_key(
     cid = int(club_id)
     if cid < 1:
         raise ValueError("club_id muss eine positive Ganzzahl sein")
+    club_seg = library_club_path_segment(cid, club_name)
     if vis == "club":
-        return f"library/club/c{cid}/{blob}"
+        return f"library/{club_seg}/{blob}"
     if uploader_profile_id is None:
         raise ValueError("uploader_profile_id ist für private Medien erforderlich (Ordner u{…} unter dem Verein)")
     up = int(uploader_profile_id)
     if up < 1:
         raise ValueError("uploader_profile_id muss positiv sein")
-    return f"library/club/c{cid}/u{up}/{blob}"
+    return f"library/{club_seg}/u{up}/{blob}"
 
 
 def relocate_local_media_file(media_root: Path, old_storage_key: str, new_storage_key: str) -> None:

backend/routers/exercises.py

@@ -2518,6 +2518,11 @@ async def upload_exercise_media(
                         },
                     )
             else:
+                club_nm = ""
+                if dedupe_club is not None:
+                    cur.execute("SELECT name FROM clubs WHERE id = %s", (int(dedupe_club),))
+                    cnr = cur.fetchone()
+                    club_nm = str(r2d(cnr).get("name") or "") if cnr else ""
                 try:
                     storage_key = library_storage_key(
                         ex_vis,
@@ -2526,6 +2531,7 @@ async def upload_exercise_media(
                         ext,
                         uploader_profile_id=profile_id if ex_vis == "private" else None,
                         mime_type=mime,
+                        club_name=club_nm,
                     )
                 except ValueError as e:
                     raise HTTPException(status_code=400, detail=str(e)) from e

backend/routers/media_assets.py

@@ -312,6 +312,15 @@ def _effective_media_patch_fields(patch_fields: dict, asset: dict) -> dict:
     return eff
 
 
+def _club_display_name_for_storage(cur: Any, club_id: int) -> str:
+    """Anzeigename für library_club_path_segment; leer wenn Verein fehlt."""
+    cur.execute("SELECT name FROM clubs WHERE id = %s", (int(club_id),))
+    row = cur.fetchone()
+    if not row:
+        return ""
+    return str(r2d(row).get("name") or "")
+
+
 def _relocate_asset_file_if_governance_changed(
     cur: Any,
     media_root: Path,
@@ -334,6 +343,9 @@ def _relocate_asset_file_if_governance_changed(
     try:
         up = asset.get("uploaded_by_profile_id")
         up_i = int(up) if up is not None else None
+        club_nm: Optional[str] = None
+        if next_vis in ("club", "private") and next_club_id is not None:
+            club_nm = _club_display_name_for_storage(cur, next_club_id)
         new_key = library_storage_key(
             next_vis,
             next_club_id if next_vis != "official" else None,
@@ -341,6 +353,7 @@ def _relocate_asset_file_if_governance_changed(
             ext,
             uploader_profile_id=up_i if next_vis == "private" else None,
             mime_type=str(asset.get("mime_type") or "") or None,
+            club_name=club_nm,
         )
     except ValueError as e:
         raise HTTPException(status_code=400, detail=str(e)) from e
@@ -623,6 +636,10 @@ def _ingest_library_media_file(
     elif not ext and mime == "video/quicktime":
         ext = ".mov"
 
+    club_nm = ""
+    if next_cid is not None:
+        club_nm = _club_display_name_for_storage(cur, next_cid)
+
     media_root = get_effective_media_root(cur)
     try:
         storage_key = library_storage_key(
@@ -632,6 +649,7 @@ def _ingest_library_media_file(
             ext,
             uploader_profile_id=profile_id if vis == "private" else None,
             mime_type=mime,
+            club_name=club_nm,
         )
     except ValueError as e:
         raise HTTPException(status_code=400, detail=str(e)) from e

backend/tests/test_library_storage_key.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 
 import pytest
 
-from media_storage import library_media_kind_dir, library_storage_key
+from media_storage import library_club_path_segment, library_media_kind_dir, library_storage_key
 
 _HEX64 = "a" * 64
 
@@ -13,17 +13,32 @@ def test_library_media_kind_dir_mime_overrides_ext() -> None:
     assert library_media_kind_dir("application/pdf", ".tmp") == "pdf"
 
 
+def test_library_club_path_segment_slug_and_fallback() -> None:
+    assert library_club_path_segment(3, "Grün & Weiß / Dojo!") == "gruen-weiss-dojo-c3"
+    assert library_club_path_segment(3, None) == "verein-c3"
+    assert library_club_path_segment(3, "   ") == "verein-c3"
+    assert library_club_path_segment(12, "東道場") == "verein-c12"
+
+
+def test_library_club_path_segment_long_name_truncated() -> None:
+    long = "a" * 80
+    seg = library_club_path_segment(5, long)
+    assert seg == "a" * 48 + "-c5"
+
+
 def test_library_storage_key_private_is_uploader_under_club() -> None:
     assert (
-        library_storage_key("private", 7, _HEX64, ".jpg", uploader_profile_id=99)
+        library_storage_key(
-        == f"library/club/c7/u99/image/{_HEX64}.jpg"
+            "private", 7, _HEX64, ".jpg", uploader_profile_id=99, club_name="Ost Dojo München"
+        )
+        == f"library/ost-dojo-muenchen-c7/u99/image/{_HEX64}.jpg"
     )
 
 
 def test_library_storage_key_club_flat_under_club() -> None:
     assert (
-        library_storage_key("club", 42, _HEX64, ".png")
+        library_storage_key("club", 42, _HEX64, ".png", club_name="Demo-Verein")
-        == f"library/club/c42/image/{_HEX64}.png"
+        == f"library/demo-verein-c42/image/{_HEX64}.png"
     )
 
 
@@ -36,8 +51,8 @@ def test_library_storage_key_official() -> None:
 
 def test_library_storage_key_normalizes_visibility() -> None:
     assert (
-        library_storage_key("  CLUB ", 1, _HEX64, "pdf")
+        library_storage_key("  CLUB ", 1, _HEX64, "pdf", club_name="Alpha")
-        == f"library/club/c1/pdf/{_HEX64}.pdf"
+        == f"library/alpha-c1/pdf/{_HEX64}.pdf"
     )
 
 
@@ -50,7 +65,7 @@ def test_library_storage_key_other_bin() -> None:
 
 def test_library_storage_key_private_requires_uploader() -> None:
     with pytest.raises(ValueError, match="uploader_profile_id"):
-        library_storage_key("private", 1, _HEX64, ".jpg")
+        library_storage_key("private", 1, _HEX64, ".jpg", club_name="V")
 
 
 def test_library_storage_key_private_requires_club() -> None:
@@ -60,24 +75,33 @@ def test_library_storage_key_private_requires_club() -> None:
 
 def test_library_storage_key_club_requires_id() -> None:
     with pytest.raises(ValueError, match="Verein"):
-        library_storage_key("club", None, _HEX64, ".jpg")
+        library_storage_key("club", None, _HEX64, ".jpg", club_name="X")
 
 
 def test_library_storage_key_club_id_positive() -> None:
     with pytest.raises(ValueError, match="positiv"):
-        library_storage_key("club", 0, _HEX64, ".jpg")
+        library_storage_key("club", 0, _HEX64, ".jpg", club_name="X")
 
 
 def test_library_storage_key_invalid_visibility() -> None:
     with pytest.raises(ValueError, match="Sichtbarkeit"):
-        library_storage_key("public", 1, _HEX64, ".jpg")
+        library_storage_key("public", 1, _HEX64, ".jpg", club_name="X")
 
 
 def test_library_storage_key_invalid_sha() -> None:
     with pytest.raises(ValueError, match="64"):
-        library_storage_key("private", 1, "deadbeef", ".jpg", uploader_profile_id=1)
+        library_storage_key("private", 1, "deadbeef", ".jpg", uploader_profile_id=1, club_name="X")
 
 
 def test_library_storage_key_extension() -> None:
     with pytest.raises(ValueError):
-        library_storage_key("private", 1, _HEX64, "../x", uploader_profile_id=1)
+        library_storage_key(
+            "private", 1, _HEX64, "../x", uploader_profile_id=1, club_name="X"
+        )
+
+
+def test_library_storage_key_private_no_club_name_fallback() -> None:
+    assert (
+        library_storage_key("private", 2, _HEX64, ".jpg", uploader_profile_id=3)
+        == f"library/verein-c2/u3/image/{_HEX64}.jpg"
+    )

backend/tests/test_media_assets_archive.py

@@ -18,7 +18,7 @@ from tenant_context import TenantContext, get_tenant_context
 # Gültige storage_key-Beispiele (64 Hex-Zeichen wie echter SHA-256)
 _SK_OFF_A = f"library/official/image/{'a' * 64}.jpg"
 _SK_OFF_B = f"library/official/image/{'b' * 64}.jpg"
-_SK_PRIV_C = f"library/club/c1/u1/video/{'c' * 64}.mp4"
+_SK_PRIV_C = f"library/verein-c1/u1/video/{'c' * 64}.mp4"
 
 
 @pytest.fixture

backend/version.py

@@ -1,6 +1,6 @@
 # Shinkan Jinkendo Version Information
 
-APP_VERSION = "0.8.55"
+APP_VERSION = "0.8.56"
 BUILD_DATE = "2026-05-07"
 DB_SCHEMA_VERSION = "20260508049"
 
@@ -13,11 +13,11 @@ MODULE_VERSIONS = {
     "club_join_requests": "1.0.1",  # Depends(get_tenant_context)
     "admin_users": "1.0.0",  # GET /api/admin/users
     "platform_media_storage": "1.0.0",  # GET/PUT /api/admin/platform-media-storage (Superadmin-Pfad unter MEDIA_ROOT)
-    "media_assets": "1.10.0",  # library/*/image|video|pdf|other/ Unterordner (Medientyp)
+    "media_assets": "1.11.0",  # library/{vereins-slug}-c{id}/ statt library/club/c{id}/
     "groups": "0.1.0",
     "skills": "0.1.0",
     "methods": "0.1.0",
-    "exercises": "2.17.3",  # library_storage_key mit mime_type (Medientyp-Ordner)
+    "exercises": "2.17.4",  # Übungs-Upload: Vereinsnamen für library-Pfad aus clubs
     "training_units": "0.2.0",
     "training_programs": "0.1.0",
     "planning": "0.8.1",  # Vorlagen Leseprüfung library_content_visible_to_profile
@@ -29,6 +29,13 @@ MODULE_VERSIONS = {
 }
 
 CHANGELOG = [
+    {
+        "version": "0.8.56",
+        "date": "2026-05-07",
+        "changes": [
+            "Medienbibliothek: Vereinsmedien unter library/{aus Name abgeleitet}-c{club_id}/ statt festem library/club/c{id}/; Sonderzeichen/Umlaute zu sicheren Ordnernamen; fehlender Name → verein-c{id}; Governance-Umzug liest aktuellen Vereinsnamen aus DB",
+        ],
+    },
     {
         "version": "0.8.55",
         "date": "2026-05-07",