* feat: new agent-loop * adapt piagent * feat: refine workflow agent loop responses * fix: adapt pi agent workflow events * fix: adapt pi agent workflow responses * perf: code * doc * test: stabilize llm utils image handling * feat: model think switch * feat: add agent context checkpoint compression * perf: context * toolcall adapt * move doc * review * perf: split code * fix: chat test * refactor: move i18nT to global * remove invalid doc * fix: avoid empty agent reminder query block * fix: keep llm usage on error response * skip system tool call
