[cppbear]

utgen analyze exported 663 bytes functions but only 226 context files, then failed validation. Trait-default contexts were never written; short-name matching conflated generic/reference impls; forwarding-macro methods were absent from the source AST.

• Bind source functions to compiler identities using function and enclosing-impl source positions. Keep distinct generic trait instantiations and reference receivers separate, and exclude inactive method bodies.
• Reuse parseable method source already exported by rustc for missing forwarding methods in an existing source impl. Write trait-default contexts through the normal path.
• Buffer recursive dependency JSON reads. Report analysis-stage timings and identify missing contexts in errors.
• Add a real analysis regression covering method identity, source preservation, and two independent bytes copies; document the acceptance criteria and measured baseline.

Local validation passed: release and debug workspace builds; 30 workspace tests (one live-model test ignored); the minimal generation/repair/coverage pipeline; and the method-identity fixture. Both bytes copies passed with all 663 branch records, dependency records, compiler identities, and contexts aligned, in 34.632 s and 34.747 s. The previous release baseline failed after 43.714 s with only 226 contexts; these figures are not a speedup benchmark because successful work differs.

Both the branch CI and PR CI passed, including the existing coverage/scheduling regressions and the new release analysis check. On the PR runner, the bytes copies completed in 25.401 s and 24.551 s, with all artifact, identity, and source-preservation assertions passing. No model service is required for the bytes check. The scope is the pinned bytes default configuration; recovering parseable method source does not implement general macro expansion or validate bytes model-generation quality.