Add bazhuayu plugin 0.0.4

[rocosen]

Automated Dify plugin package update for bazhuayu 0.0.4.

[crazywoola]

✅ LGTM

Decision: Approve

Local Check Results

Check	Status	Detail	Required action
PR content language	✅ Pass	PR title/body CJK ratio=0.0% (zh=0, en=60, ignored_zh=0, allowed_zh<=0)	None.
Project structure	✅ Pass	All expected files present: manifest.yaml, README.md, PRIVACY.md. _assets/: yes.	None.
Manifest author	✅ Pass	author is valid.	None.
Icon validation	✅ Pass	icon exists: _assets/icon.svg	None.
Version check	✅ Pass	version 0.0.4 is available.	None.
README language	✅ Pass	README.md CJK ratio=0.0% (zh=0, en=1787, allowed_zh<=0)	None.
PRIVACY.md	✅ Pass	PRIVACY.md exists and is non-empty.	None.
Dependency install	✅ Pass	requirements installed successfully.	None.
dify_plugin version	✅ Pass	dify_plugin version 0.5.1 satisfies >= 0.5.0.	None.
Install test	✅ Pass	plugin install test passed.	None.
Packaging test	✅ Pass	packaging check passed.	None.