Unify TS 7 project module resolution

[ctate]

Summary

• adopt project paths in the TypeScript 7 program, normalize inherited/baseUrl-relative targets, and give scriptc's resolver the identical map
• route static imports, re-exports, dynamic imports, and CommonJS require() through one project-module resolver before npm fallback
• add Node-differential ESM and CommonJS self-reference fixtures plus TS 5.9 resolver-oracle, TS 7 order-canary, native alias, and compatibility-ledger evidence

Closes #239.

This incorporates the TypeScript 7 paths intent from #197 and the bare project dynamic-import portion of #200 on top of the current resolver architecture.

Validation

• pnpm -r build
• pnpm exec vitest run packages/compiler/src/frontend/resolve.test.ts packages/compiler/test/ts7 — 94 passed
• focused C-backend project-config and module corpus runs — project aliases plus 7 ESM/CJS module cases passed
• touched-file ESLint — no errors
• pnpm node-compat:check
• cd docs && NEXT_DIST_DIR=.next-check pnpm check
• pnpm test:sandbox: all 16 Linux plain/sanitized Sandbox lanes passed. Four local lanes initially started before the ignored Darwin helper/runtime artifacts existed; after building the pinned LLVM 22.1.8 helper and matching runtime pack, the exact gate-equivalent local matrix passed in both lanes:
  • Darwin contracts: 18 passed per lane
  • prettier/Portless external suites: 6 passed per lane
  • Vercel E2E: 31 passed across two shards per lane

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Project	Deployment	Actions	Updated
scriptc	Ready	Preview, v0	Sep 14, 2026 1:54am UTC