perf(ts): restore CommonJS graph admission after owner-transfer changes

Discovered while completing graph readmission under #487 and benchmark tracker #416.

The deterministic schema-3 benchmark corpus has 128 checked-JavaScript CommonJS owners plus one consumer. On current main at a572f3acd55fec4b15217d665c9433fe952a5741, a ReleaseFast home-tsc does not complete the unchanged positive project in a practical admission window:

python3 bench/vs_tsgo/run.py corpus
./zig-out/bin/home-tsc --noEmit -p bench/vs_tsgo/corpus/commonjs_graph/tsconfig.json

Observed on Apple M3 Pro/macOS: still CPU-active after 7 minutes, roughly six cores, bounded memory, no diagnostics; manually interrupted. The all-workload schema-3 preflight therefore aborts at commonjs_graph before any timing/result directory. Host load was extreme, so elapsed time is classification evidence only, not a benchmark claim. The frozen admitted #546 checkpoint completed this same 128-owner workload at 42.1 ± 0.7 ms and passed its negative controls.

Required work:

• profile and identify the general algorithmic regression on the unchanged corpus; do not special-case benchmark names or skip checking
• preserve the real checked module.exports union types and exact temporary negative controls (3× TS2322 + 3× TS2339)
• retain the 198/198 CommonJS type-transfer audit and 132/132 static-require discovery audit
• add an operation-count or focused scaling regression for the diagnosed repeated work
• rerun complete schema-3 admission before any timing, then document the result and update the README table only with admitted evidence

No corpus, diagnostic, or sample filtering is allowed.

Profiled current main (a572f3acd) on the unchanged 128-owner positive CommonJS graph. A 5-second macOS sample found every worker in Program.importProgramGlobals; physical footprint reached ~7 GB within seconds. The typed-global index was treating CommonJS provider files as scripts, then relocating every provider owner into every peer compilation (quadratic owner transfer).

The in-progress fix classifies whole-property, named-property, and Object.defineProperty CommonJS exports as external modules before global publication, while preserving script semantics when module, exports, or Object are locally shadowed. This is a semantic boundary fix, not a corpus exception. Focused tests and full admission gates are being run before commit.

Fixed by d0b9ef0aa. The exact CommonJS positive and negative admission controls pass, the untimed type audit is 198/198, discovery is 132/132, and final schema-3 result 20260905T225537Z records Home at 31.2 ± 3.2 ms versus native TS 7 at 58.5 ± 3.7 ms (1.87x faster), with 30/30 paired wins. Documentation is staged for the final evidence commit.

Completed by d0b9ef0aa and documented in 4fda2da9e. CommonJS type/discovery audits pass 198/198 and 132/132; the exact workload controls pass; final result 20260905T225537Z records Home 31.2 ± 3.2 ms versus native TS 7 at 58.5 ± 3.7 ms, with 30/30 paired wins.