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| # Chat Compaction Plugin DOX | |
| ## Purpose | |
| - Own compacting an entire chat history into a single optimized summary message. | |
| - Keep compaction prompt, helper, API, and modal behavior aligned. | |
| ## Ownership | |
| - `plugin.yaml` and `default_config.yaml` own metadata and compaction defaults. | |
| - `api/compact_chat.py` owns the compaction endpoint. | |
| - `helpers/compactor.py` owns summary generation and history rewrite logic. | |
| - `prompts/` owns compaction system and message prompts. | |
| - `webui/` owns the compaction modal and store. | |
| ## Local Contracts | |
| - Preserve chat history integrity and persistence after compaction. | |
| - Backup JSON and transcript artifacts must remain UTF-8 writable when chat content contains malformed Unicode such as lone surrogates. | |
| - Keep generated summaries bounded by configured model and token limits. | |
| - Compacted summaries must be resumable task state: preserve the latest request, authorization boundaries, decisions, evidence, modified artifacts, pending jobs and their IDs, the next executable step, blockers, and checks not run. | |
| - Store the compacted summary as non-assistant history context so provider-history normalization cannot discard it as an orphaned assistant turn. | |
| - Preserve loaded skill names from `skill_instructions` metadata without copying full skill bodies into compacted summaries. | |
| - Preserve only secret references such as names, aliases, purposes, or storage locations; never preserve secret values. | |
| - Clear the cached context window after replacing history so stale transcript content is not persisted as active resumable state; the cache rebuilds on the next model turn. | |
| - After replacing local history, clear the active Responses provider continuation while preserving stored response IDs for cleanup. | |
| - Do not discard original context data unless the compaction flow explicitly owns that behavior. | |
| ## Work Guidance | |
| - Coordinate prompt changes with helper behavior and UI confirmation text. | |
| ## Verification | |
| - Smoke-test compacting a chat and reloading it after persistence. | |
| ## Child DOX Index | |
| No child DOX files. | |