Add image support to Files and contact photos to Contacts

Files:
- read_file returns images inline (jpg/png/gif/webp up to 10MB)
- Text files returned as text, binary files as metadata only

Contacts:
- get_contact includes contact photo as inline image if available
- New tool: set_contact_photo (base64 jpeg/png → VCard PHOTO)

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

files/server.py

@@ -1,12 +1,13 @@
 """MCP Files Server — browse and read files via WebDAV/oCIS."""
 
-import os, sys, contextlib
+import os, sys, contextlib, base64
 from xml.etree import ElementTree as ET
 from typing import Annotated
 
 import httpx
 from pydantic import Field
 from mcp.server.fastmcp import FastMCP
+from mcp.types import TextContent, ImageContent
 from starlette.applications import Starlette
 from starlette.routing import Mount
 
@@ -68,20 +69,27 @@ def list_files(
     return "\n".join(lines) if lines else "Leeres Verzeichnis"
 
 
+IMAGE_TYPES = {"image/jpeg", "image/png", "image/gif", "image/webp", "image/svg+xml"}
+TEXT_HINTS = ["text/", "json", "xml", "csv", "yaml", "javascript", "markdown"]
+
 @mcp.tool()
 def read_file(
-    path: Annotated[str, Field(description="Full file path, e.g. '/Documents/notes.txt', '/config.yaml'")],
-) -> str:
-    """Read a text file's content (txt, md, json, csv, yaml, xml, html). Binary files show only metadata."""
+    path: Annotated[str, Field(description="Full file path, e.g. '/Documents/notes.txt', '/Photos/pic.jpg'")],
+) -> list[TextContent | ImageContent]:
+    """Read a file. Text files return content directly. Images (jpg/png/gif/webp) are displayed inline. Other binary files return only metadata."""
     user = get_current_user()
-    if not user: return "Error: not authenticated"
-    r = httpx.get(_dav(user, path), auth=_auth(user), timeout=30)
-    if r.status_code >= 400: return f"Fehler: HTTP {r.status_code}"
-    ct = r.headers.get("content-type", "")
-    if any(t in ct for t in ["text/", "json", "xml", "csv", "yaml", "javascript"]):
-        return r.text[:100000]
-    try: return r.content.decode("utf-8")[:100000]
-    except: return f"Binaerdatei ({len(r.content)} bytes, Typ: {ct}). Kann nicht angezeigt werden."
+    if not user: return [TextContent(type="text", text="Error: not authenticated")]
+    r = httpx.get(_dav(user, path), auth=_auth(user), timeout=60)
+    if r.status_code >= 400: return [TextContent(type="text", text=f"Fehler: HTTP {r.status_code}")]
+    ct = r.headers.get("content-type", "").split(";")[0].strip()
+    if ct in IMAGE_TYPES and len(r.content) < 10_000_000:
+        return [ImageContent(type="image", data=base64.b64encode(r.content).decode(), mimeType=ct)]
+    if any(t in ct for t in TEXT_HINTS):
+        return [TextContent(type="text", text=r.text[:100000])]
+    try:
+        return [TextContent(type="text", text=r.content.decode("utf-8")[:100000])]
+    except Exception:
+        return [TextContent(type="text", text=f"Binaerdatei ({len(r.content):,} bytes, Typ: {ct}). Nutze read_file nur fuer Text und Bilder.")]
 
 
 @mcp.tool()