feat(notes): support vidéo + transcodage audio AAC universel

Audio : ffmpeg transcode toute entrée (webm/ogg/m4a) vers AAC/m4a
au moment de l'upload → lecture Safari iOS garantie.

Vidéo : nouveau save_video(), webm transcodé en H.264/mp4, mp4/quicktime
stocké directement. Lecteur <video> inline dans NoteCard.

Frontend :
- Bouton vidéo (fa-video) dans les actions de chaque note
- Icônes fa-image / fa-microphone / fa-video / fa-location-dot dans la méta
- Filtres rapides : Photo / Audio / Vidéo / GPS (avec icônes fa)
- Boutons actions migrés vers icônes Font Awesome
- client_max_body_size nginx : 15m → 200m pour les vidéos

v0.5.4

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/api/notes.py

@@ -9,7 +9,7 @@ from app.core.database import get_session
 from app.core.redis import enqueue
 from app.models.notes import NoteItem, NoteAttachment
 from app.schemas.notes import NoteCreate, NoteUpdate, NoteResponse
-from app.services.media import save_image, save_audio, delete_media, ALLOWED_IMAGE_TYPES, ALLOWED_AUDIO_PREFIXES
+from app.services.media import save_image, save_audio, save_video, delete_media, ALLOWED_IMAGE_TYPES, ALLOWED_AUDIO_PREFIXES, ALLOWED_VIDEO_TYPES
 
 router = APIRouter()
 
@@ -21,6 +21,7 @@ async def list_notes(
     tag: str | None = Query(default=None),
     has_photo: bool | None = Query(default=None),
     has_audio: bool | None = Query(default=None),
+    has_video: bool | None = Query(default=None),
     has_gps: bool | None = Query(default=None),
     session: AsyncSession = Depends(get_session),
 ):
@@ -55,15 +56,11 @@ async def list_notes(
     notes = result.scalars().all()
 
     if has_photo is not None:
-        notes = [
-            n for n in notes
-            if has_photo == any(a.file_type == "image" for a in n.attachments)
-        ]
+        notes = [n for n in notes if has_photo == any(a.file_type == "image" for a in n.attachments)]
     if has_audio is not None:
-        notes = [
-            n for n in notes
-            if has_audio == any(a.file_type == "audio" for a in n.attachments)
-        ]
+        notes = [n for n in notes if has_audio == any(a.file_type == "audio" for a in n.attachments)]
+    if has_video is not None:
+        notes = [n for n in notes if has_video == any(a.file_type == "video" for a in n.attachments)]
 
     return notes
 
@@ -137,6 +134,9 @@ async def add_attachment(
     elif ct in ALLOWED_AUDIO_PREFIXES:
         media = await save_audio(file)
         file_type = "audio"
+    elif ct in ALLOWED_VIDEO_TYPES:
+        media = await save_video(file)
+        file_type = "video"
     else:
         raise HTTPException(400, f"Type non supporté : {file.content_type}")