Keep directory requests from becoming unresolved or pointing at sibling files
when constructing reference-source dependency graphs. Canonicalize index
candidates and preserve directory intent while retaining ordinary lookup rules.
Constraint: Preserve current TypeScript candidate objects and exact-before-Unicode lookup
Rejected: Reorder all file probes before index probes | Changes ordinary CommonJS candidate priority
Confidence: high
Scope-risk: narrow
Tested: Public CLI regression fails on base; focused reference and resolver suites pass; npm run check
Not-tested: Full suite on refreshed base; earlier full run had 12 baseline-reproduced failures
Shenrui Ma