[vincentkoc]

Compiled require(esm) currently marks the namespace shared by import(). Give require() its own cached live facade, preserving the unmarked import namespace, explicit CommonJS exports, dynamic/mock updates, and host conversion identity. Invalidate captured-export caches when the facade structure changes.

This integrates the fix with the upstream sync landed in PR34. Both branch parents are retained; the sync's upstream history is preserved. The regression keeps the original main entry and admits the second entry used by the host API.

Validation:

• Fresh native qualification on synchronized source 1281 passed all 11 namespace cases, four API cases, four GC stress cases, all 17 async-stack configurations, full AOT feature admission, and shell-disabled API linkage. All eight tested source/test afterimages match this branch; artifact 13125718333 and all 25 archive links were verified.
• The captured-export cache RED/GREEN remains historical 163 evidence, with exact production-source identities checked. It is not relabeled as a fresh 1281 reproduction.
• The paired Bun CommonJS-forwarding regression failed before and passed after its caller repair through actual bun bd test. The ordinary/AOT mock probe confirms raw mock factory exports remain unchanged.
• Fresh independent source and fixture reviews completed without actionable findings.

The native host proof covers one loaded image. Final Linux/Darwin Release and OpenClaw/Birdclaw qualification is tracked in PR45; the broader Bun Debug suites have investigated timeouts and are not claimed fully passing. No release, tag, shipping pin, or artifact promotion is included.

Current-head CI: Windows ARM64, Linux ARM64 and macOS cross-build pass. Linux native and AOT builds pass (1,509,957 native checks); the consumer phase stops at upload-pack: not our ref 882b3ce222db5f51adde7dce65bf6262aeb7335f. The source pin, fetch owner and workflow are byte-identical to current main. This is an inherited acquisition failure, not a Bun consumer verdict. #45 replaces that pin with publicly fetchable qualified source and owns the fresh matched consumer gates. Failed consumer acquisition run.