Require a package directory for bare ESM imports. Continue CommonJS root and subpath lookup through ancestor packages after ordinary misses, while keeping exports authority, unavailable metadata, and failed nonempty main entrypoints terminal.
Carry failed-main ownership in the internal resolution result and retain the nearest local miss after exhausting ancestors. Consolidate package selection at its owning boundary and qualify loader differences with real Node 24, CLI, and MCP regressions.
Keep relative ESM imports exact, restrict Node legacy probes to .js/.json/.node, and treat empty package main as absent. Stop Node package-main lookup before nested package reinterpretation, while retaining generic artifact inference.
Replace stale recursive and .cjs probe expectations. Verify CLI and MCP graph results against real Node 24 runtime controls, including exact suffixes, index fallback, and nested package main refusal.
Refs #2020, #2021, #2022
morluto