* release/v0.2.8:
fix(agent): Reading of docx multimodal files; Multimodal attachment history record
fix(web): workflow header hidden operate
feat(web): multi_agent app not support share
feat(web): chart content support files
fix(web): update app export param key
fix(web): app features bugfix
fix(web): improve document preview handling for .doc files and validate docx format
fix:pdf change version
fix:cdn pdf
fix: use real workflow_config id from db to avoid foreign key violation in workflow_executions
fix: remove redundant local AppRelease import causing NameError in draft_run
fix: shared app uses release snapshot config instead of draft in draft_run and get_agent_config
fix: support both query param and body for new_name in copy_app for backward compatibility
fix: read new_name from request body in copy_app endpoint