Narrative: FN-7673 re-attempted the engine-core gate bundle lever with a single combined-entry engine-graph design (all 14 mock-safe roots redirected through a resolveId plugin to one synthetic packages/engine/.gate-bundle/engine.mjs) after FN-7670's 14-separate-root attempt was inconclusive. This update records the negative A/B result and closes the lever.
- Documented that the combined-entry design achieved its structural goal (149 first-party inputs -> 1 output file) and full 335/335 coverage parity
- Recorded a true interleaved A/B (5 warm + 1 cold pair) showing the combined-entry bundle is consistently slower than the @fusion/core-only baseline (warm median +29.1%, import-phase aggregate +74.0%)
- Captured the working theory: funnelling 14 relative-import sites through a resolveId-plugin redirect to one large synthetic export-* file adds more transform/resolution overhead than it saves, unlike @fusion/core's plain resolve.alias
- Noted the experiment was NOT landed; wiring (engine-graph scans, combined-entry builder, resolveId plugin) was fully reverted
- Marked this lever (bundling the @fusion/engine relative-import graph for the engine-core gate, in either 14-file or single-combined-entry shape) as CLOSED absent new evidence
Files changed:
packages/engine/vitest.config.ts | 32 +++++++++++++++++++++++++++++---
1 file changed, 29 insertions(+), 3 deletions(-)
Fusion-Task-Id: FN-7673
Fusion-Task-Lineage: 46951e5f-e7dc-4f7c-9601-0cfa0b082d70
Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>
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