feat(core): resilient compaction with reactive retry and middle-out removal#821
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feat(core): resilient compaction with reactive retry and middle-out removal#821
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…rompt Add ContextLengthExceeded error variant with provider-specific pattern detection. Implement reactive compaction: intercept context overflow, auto-compact, retry up to 2 times. Progressive middle-out tool response removal as fallback when summarization itself exceeds context (10/20/50/ 100% tiers). Replace generic summarization prompt with structured 9-section template (User Intent, Technical Concepts, Files & Code, Errors & Fixes, Problem Solving, User Messages, Pending Tasks, Current Work, Next Step). Add build_metadata_summary as LLM-free final fallback with safe UTF-8 truncation.
Add 19 tests for resilient compaction: call_chat_with_tools_retry (3 scenarios), build_chunk_prompt validation (9 sections), remove_tool_responses_middle_out edge cases, build_metadata_summary robustness, truncate_chars UTF-8 safety, E2E compaction recovery. Update docs/src/advanced/context.md with structured compaction prompt, progressive tool response removal, metadata fallback, reactive retry. Update all READMEs with M30 feature descriptions.
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Summary
ContextLengthExceedederror variant with heuristic pattern matching across Claude, OpenAI, and Ollama providerscall_llm_with_retry()andcall_chat_with_tools_retry()— intercept context length errors, auto-compact, retry up to 2 attemptsbuild_metadata_summary()LLM-free fallback with safe UTF-8 truncation viatruncate_chars()Closes #792, closes #807, closes #808, closes #809, closes #810
Test plan
cargo +nightly fmt --checkpassescargo clippy --workspace -- -D warningspassescargo nextest run --workspace --lib --bins— 2626 tests pass