chore: release 2.5.3

[ysolanky]

Changelog

New Features:

• Remote Knowledge: Added endpoints to support listing of remote contents via API. Enables uploading of content in S3 buckets via AgentOS

Improvements:

• PDF Reader: Added sanitize_content parameter to BasePDFReader (enabled by default) that normalizes fragmented PDF text extraction — collapsing word-per-line artifacts while preserving paragraph breaks. Disable with sanitize_content=False for PDFs containing structured content like code or tables.
• PDF Reader: Added a sanitize_content parameter to BasePDFReader that normalizes extracted PDF text by collapsing excessive whitespace sequences into single spaces.

Bug Fixes:

• Knowledge Retriever: Fix issue whereknowledge_retriever ignored when search_knowledge=True enabled.
• Claude: Fixed streaming metrics double-count input_tokens for Anthropic models
• Knowledge Search: Fixed match include/exclude patterns against filename for directory scanning
• Reasoning: fixed reasoning_content duplication across reasoning steps.
• Deepcopy on Agent/Team/Workflow: fixed deep_copy fails for nested teams due to non-init dataclass fields.
• HITL: fixed HITL pause handlers silently dropping session_state changes in both agent and team modules.
• Workflow Parallel Steps: fixed race condition on run_context.output_schema in Parallel execution.