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## Why `memory_summary.md` is injected into every session, so its value depends on staying compact, navigational, and easy to regenerate when the expected shape changes. The previous consolidation prompt encouraged a broad actionable inventory and allowed older summary structures to be patched in place, which makes it easier for stale or overly verbose summaries to keep accumulating. This change makes the summary format explicitly versioned and biases Phase 2 memory consolidation toward denser prompt-loaded context. ## What changed - Require `memory_summary.md` to begin with an exact `v1` header. - Teach consolidation to regenerate `memory_summary.md` from scratch when the header is missing or incompatible, while still allowing incremental updates to `MEMORY.md`. - Tighten the `memory_summary.md` instructions so it acts as a compact routing/index layer instead of a second handbook. - Lower `MEMORY_TOOL_DEVELOPER_INSTRUCTIONS_SUMMARY_TOKEN_LIMIT` from `5_000` to `2_500` so the runtime prompt budget matches the denser summary target. ## Verification Not run; this is a prompt/template update plus a prompt budget constant change.