Description

Fixes a pack compression regression where near-related memories were treated like duplicates and removed from default rendered context. Default packs now remain self-contained; near-related compression is limited to compact mode by default, with explicit ids mode available for tool-enabled benchmarks/agents.

Adds --compression-mode off|compact|ids, CODEMEM_PACK_COMPRESSION, and MCP compression_mode, plus clearer compact-mode fetch guidance for memory_get_observations.

Type of Change

• 🚀 Feature (new functionality)
• 🐛 Bug fix (fixes an issue)
• 📚 Documentation (docs-only change)
• 🔧 Maintenance (refactor, chore, CI, etc.)
• 🧪 Testing (test-only changes)

Testing

• Relevant checks pass locally (pnpm run tsc, pnpm run lint, pnpm run test)
• Added/updated tests for changes
• Manually verified changes work as expected

Targeted checks run:

• pnpm exec vitest run packages/core/src/pack.test.ts packages/cli/src/commands/pack.test.ts
• pnpm run tsc
• pnpm run lint

Checklist

• Code follows project style (pnpm run lint passes for touched files)
• Self-review completed
• Documentation updated (if needed)
• No new warnings introduced