release: v1.3.0 (#70)

New:
- WeChat Official Account channel (search + read)
  - Search via miku_ai (Sogou WeChat search)
  - Read via Camoufox (stealth Firefox, bypasses anti-bot)
- 13 channels total

Fixed:
- Windows encoding: text=True → encoding='utf-8' in all subprocess calls (#64)
- Windows .cmd resolution: use shutil.which() paths (#64)

Docs:
- Clarified agent-reach has no read/search commands (#58, #59)
- Fixed xiaohongshu API function names in SKILL.md (#65)
- Added CONTRIBUTING.md (#62)
- Updated README (zh + en) with WeChat channel

Version bumps: pyproject.toml, __init__.py, test_cli.py

Co-authored-by: Panniantong <panniantong@users.noreply.github.com>

tests/test_cli.py

@@ -77,7 +77,7 @@ class TestCheckUpdateRetry:
 
         sequence = [
             R(429, headers={"Retry-After": "3"}),
-            R(200, payload={"tag_name": "v1.2.0"}),
+            R(200, payload={"tag_name": "v1.3.0"}),
         ]
 
         with patch("requests.get", side_effect=sequence):