feat(brain): Memory-Anhaenge — multipart/form-data Endpoint daneben Base64

Stefan's Test scheiterte: ein normales Handy-Foto als Base64 in der
curl-d-Argumentliste sprengt Bash's ARG_MAX (typisch 128KB-2MB). Plus:
Browser-FormData und curl -F sind eh der Standard fuer File-Uploads.

Fix: zusaetzlicher Endpoint
  POST /memory/{id}/attachments/upload  (multipart/form-data, field: file)

Beispiel auf der VM:
  curl -F file=@/pfad/zu/foto.jpg \
       "$ARIA_BRAIN_URL/memory/<id>/attachments/upload" | jq

Base64-Endpoint (/memory/{id}/attachments) bleibt fuer kleine
Uploads + interne JSON-Tools. Beide rufen am Ende den gleichen
_commit_attachment_meta-Helper, der das Memory-Payload um den
neuen Anhang updated.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

aria-brain/main.py

@@ -23,7 +23,7 @@ from typing import List, Optional
 import asyncio
 from contextlib import asynccontextmanager
 
-from fastapi import FastAPI, HTTPException, BackgroundTasks, Request
+from fastapi import FastAPI, HTTPException, BackgroundTasks, Request, UploadFile, File
 from fastapi.responses import Response
 from pydantic import BaseModel, Field
 
@@ -317,26 +317,16 @@ def memory_attachments_list(point_id: str):
     return {"memory_id": point_id, "attachments": mem_att.list_attachments(point_id)}
 
 
-@app.post("/memory/{point_id}/attachments", response_model=MemoryOut)
-def memory_attachments_add(point_id: str, body: AttachmentUploadBody):
-    """Anhang als Base64 hochladen + im Memory-Payload eintragen."""
-    import memory_attachments as mem_att
+def _commit_attachment_meta(point_id: str, meta: dict) -> MemoryOut:
+    """Shared-Helper: nach FS-Write das Payload um den neuen Anhang updaten.
+    Duplikat-Name wird ersetzt, sonst hinten dran."""
     s = store()
     m = s.get(point_id)
     if not m:
         raise HTTPException(404, f"Memory {point_id} nicht gefunden")
-    try:
-        meta = mem_att.save_from_base64(point_id, body.name, body.data_base64)
-    except ValueError as exc:
-        raise HTTPException(400, str(exc))
-
-    # Payload aktualisieren — neuer Anhang ans Ende, Duplikate (gleicher
-    # Filename) werden ersetzt damit die Liste nicht zweimal denselben
-    # Eintrag hat
     atts = [a for a in (m.attachments or []) if a.get("name") != meta["name"]]
     atts.append(meta)
     m.attachments = atts
-    from qdrant_client.http import models as qm
     from memory.vector_store import COLLECTION
     import datetime as _dt
     m.updated_at = _dt.datetime.now(_dt.timezone.utc).isoformat()
@@ -348,6 +338,38 @@ def memory_attachments_add(point_id: str, body: AttachmentUploadBody):
     return MemoryOut.from_point(s.get(point_id))
 
 
+@app.post("/memory/{point_id}/attachments", response_model=MemoryOut)
+def memory_attachments_add(point_id: str, body: AttachmentUploadBody):
+    """Anhang als Base64 hochladen — fuer Diagnostic + interne Tools.
+    Fuer grosse Files lieber multipart-Variante (/upload) nutzen,
+    Base64 sprengt schnell die Bash-ARG_MAX-Grenze beim curl."""
+    import memory_attachments as mem_att
+    if not store().get(point_id):
+        raise HTTPException(404, f"Memory {point_id} nicht gefunden")
+    try:
+        meta = mem_att.save_from_base64(point_id, body.name, body.data_base64)
+    except ValueError as exc:
+        raise HTTPException(400, str(exc))
+    return _commit_attachment_meta(point_id, meta)
+
+
+@app.post("/memory/{point_id}/attachments/upload", response_model=MemoryOut)
+async def memory_attachments_upload(point_id: str, file: UploadFile = File(...)):
+    """Multipart-Upload — Standard fuer Browser-FormData und curl -F.
+    Verwendung:
+      curl -F file=@foto.jpg "$ARIA_BRAIN_URL/memory/<id>/attachments/upload"
+    """
+    import memory_attachments as mem_att
+    if not store().get(point_id):
+        raise HTTPException(404, f"Memory {point_id} nicht gefunden")
+    data = await file.read()
+    try:
+        meta = mem_att.save_attachment(point_id, file.filename or "datei", data)
+    except ValueError as exc:
+        raise HTTPException(400, str(exc))
+    return _commit_attachment_meta(point_id, meta)
+
+
 @app.delete("/memory/{point_id}/attachments/{filename}", response_model=MemoryOut)
 def memory_attachments_delete(point_id: str, filename: str):
     """Einzelnen Anhang loeschen (FS + Payload-Eintrag)."""