oyi77 6bf7b9601d feat(compression): Phase 3 — aggressive mode with summarization, tool compression, and progressive aging ...

Implements the aggressive compression pipeline (issue #1588) with three
core stages: tool-result compression, progressive aging, and rule-based
summarization. Includes downgrade chain to caveman/lite when savings are
insufficient.

Core modules:
- summarizer.ts: RuleBasedSummarizer with intent/file/error/decision
  extraction, code fence trimming, skip-already-compressed guard
- toolResultCompressor.ts: 5 auto-detected strategies (fileContent,
  grepSearch, shellOutput, json, errorMessage) with toggle support
- progressiveAging.ts: 4-tier degradation (verbatim→light→moderate→
  fullSummary) with [COMPRESSED:aging:<tier>] markers
- aggressive.ts: Orchestrator with 3-step pipeline and downgrade chain
  (aggressive→caveman→lite→as-is)

Integration:
- strategySelector.ts: applyCompression() now dispatches mode='aggressive'
- compression.ts: aggressiveConfig CRUD with deep merge of nested objects
- API route: Zod schema for aggressiveConfig thresholds/strategies
- CompressionSettingsTab: aggressive mode card, thresholds, toggles, i18n
- Migration 031: SELECT 1 no-op (config stored as kv key)

Tests: 109 across 8 files (types, summarizer, toolResultCompressor,
progressiveAging, aggressive, integration, golden eval, caveman regression)
All pass. Typecheck clean. Lint clean (0 errors). Build succeeds.

2026-04-28 16:58:17 +07:00

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