feat: smart compression prompts — tiered guidance and compression priority#9
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…ompression priority - Rewrite system prompt: conservative compression when context is ample, aggressive only when high. Added compression priority guidance (what to compress first vs carefully) and recovery breadcrumb generation. - Replace unconditional 'use compress proactively' with tiered guidance: ample (<40%): focus on task, minimal compression moderate (40-55%): compress completed sections high (>55%): compress aggressively but selectively
- Remove hardcoded 40%/55% from system prompt, use qualitative descriptions - Extract shared buildContextUsageGuidance() that reads minContextLimit/maxContextLimit from config - Both inject.ts and utils.ts now use config-driven thresholds for tiering - ACP threshold shown in usage text now reflects actual maxContextLimit config value
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Summary
Changes
System prompt (
lib/prompts/system.ts)Context usage text (
inject.ts+utils.ts)"You ARE the ACP agent — use the compress tool proactively"(always)<40%: "Context is ample — focus on your task. Only compress obvious waste."40-55%: "Context is moderate — compress completed sections.">55%: "Context is high — compress aggressively but selectively."Test plan