feat: enable auto-send of document files (.md, .pdf, .docx, etc.)

Hermes could send images/videos as native attachments, but NOT documents.
The extract_local_files() method only recognized image/video extensions.

This patch adds support for auto-detecting and sending as native attachments:
- Documents: .md, .txt, .csv, .json, .xml, .yaml, .log, .pdf, .doc/.docx, .xls/.xlsx, .ppt/.pptx, .html
- Audio: .ogg, .opus, .mp3, .wav, .m4a, .silk, .flac
- Archives: .zip, .tar, .gz, .7z, .rar
- Images: added .bmp, .svg

Now when Hermes creates a weather_report.md, it will be sent as a native
file attachment on both Feishu and WeChat automatically.

Dockerfile

@@ -17,6 +17,11 @@ RUN pip install --quiet --upgrade pip && \
     pip install --quiet psutil networkx && \
     pip install --quiet -e "/app/hermes-agent[feishu,mcp,cron,pty]" 2>&1 | tail -10
 
+# Patch: add document file extensions to auto-detection for native delivery
+# This enables Hermes to send .md, .pdf, .docx, .xlsx etc. as native attachments
+COPY scripts/patch_file_delivery.py /tmp/patch_file_delivery.py
+RUN python3 /tmp/patch_file_delivery.py && rm /tmp/patch_file_delivery.py
+
 # Install Node.js 23
 RUN ARCH=$(dpkg --print-architecture) \
     && if [ "$ARCH" = "amd64" ]; then NODE_ARCH="x64"; else NODE_ARCH="$ARCH"; fi \

scripts/patch_file_delivery.py

@@ -0,0 +1,81 @@
+#!/usr/bin/env python3
+"""Patch hermes-agent to support auto-detecting document file paths for native delivery.
+
+By default, extract_local_files() only detects image/video extensions (.png, .jpg, etc.)
+which means .md, .pdf, .docx, .xlsx and other document files created by the agent
+are NOT sent as attachments.
+
+This patch adds document extensions to _LOCAL_MEDIA_EXTS so that when Hermes creates
+a file like /tmp/weather_report.md, it gets automatically sent as a native attachment
+on Feishu and WeChat instead of appearing as a plain text path.
+"""
+
+import re
+import sys
+
+def patch_file(filepath: str):
+    with open(filepath, 'r') as f:
+        content = f.read()
+
+    # Find and replace _LOCAL_MEDIA_EXTS
+    old = """\
+        _LOCAL_MEDIA_EXTS = (
+            '.png', '.jpg', '.jpeg', '.gif', '.webp',
+            '.mp4', '.mov', '.avi', '.mkv', '.webm',
+        )"""
+
+    new = """\
+        _LOCAL_MEDIA_EXTS = (
+            # Images
+            '.png', '.jpg', '.jpeg', '.gif', '.webp', '.bmp', '.svg',
+            # Videos
+            '.mp4', '.mov', '.avi', '.mkv', '.webm',
+            # Audio
+            '.ogg', '.opus', '.mp3', '.wav', '.m4a', '.silk', '.flac',
+            # Documents
+            '.md', '.txt', '.csv', '.json', '.xml', '.yaml', '.yml', '.toml', '.log',
+            '.pdf',
+            '.doc', '.docx',
+            '.xls', '.xlsx',
+            '.ppt', '.pptx',
+            '.html', '.htm',
+            # Archives
+            '.zip', '.tar', '.gz', '.7z', '.rar',
+        )"""
+
+    if old not in content:
+        print(f"ERROR: Could not find _LOCAL_MEDIA_EXTS in {filepath}", file=sys.stderr)
+        sys.exit(1)
+
+    content = content.replace(old, new, 1)
+
+    with open(filepath, 'w') as f:
+        f.write(content)
+
+    print(f"Patched {filepath}: added document/audio/archive extensions to _LOCAL_MEDIA_EXTS")
+
+if __name__ == "__main__":
+    # Find base.py in the installed package
+    filepath = sys.argv[1] if len(sys.argv) > 1 else None
+
+    # Try common locations
+    import importlib.util
+    for candidate in [
+        "/app/venv/lib/python3.12/site-packages/gateway/platforms/base.py",
+    ]:
+        if not filepath and __import__('os').path.isfile(candidate):
+            filepath = candidate
+            break
+
+    if not filepath:
+        # Try to find it
+        import os, glob
+        matches = glob.glob("/app/venv/lib/**/gateway/platforms/base.py", recursive=True)
+        if matches:
+            filepath = matches[0]
+
+    if not filepath or not os.path.isfile(filepath):
+        print(f"ERROR: base.py not found", file=sys.stderr)
+        sys.exit(1)
+
+    patch_file(filepath)