Bootstrap a standalone native compiler (#572)

- Build static programs through the TypeScript 7 frontend, C and LLVM emitters, and native linker without a JavaScript host
- Share runtime-pack verification and link planning across native and Node compiler hosts
- Handle large C output and deep logical-expression validation during compiler bootstrapping

.github/workflows/ci.yml

@@ -63,6 +63,7 @@ jobs:
           --exclude=tests/harness/self-hosting-serialization.test.ts
           --exclude=tests/harness/self-hosting.test.ts
           --exclude=tests/harness/self-hosting-llvm-emitter.test.ts
+          --exclude=tests/harness/self-hosting-native-driver.test.ts
           --exclude=tests/harness/fetch.test.ts
           --exclude=tests/harness/npm-static.test.ts
           --exclude=tests/harness/surface-manifest.test.ts
@@ -82,6 +83,12 @@ jobs:
         env:
           SCRIPTC_TEST_WORKERS: "1"
         run: pnpm test tests/harness/self-hosting-llvm-emitter.test.ts
+      - name: Tests (native compiler bootstrap)
+        if: matrix.shard == 6
+        env:
+          SCRIPTC_TEST_WORKERS: "1"
+          VITEST_RPC_TIMEOUT: "180000"
+        run: pnpm test tests/harness/self-hosting-native-driver.test.ts
       # These long files otherwise collide in one Vitest file shard and contend
       # for the worker RPC. Spread them across jobs with one worker each.
       - name: Tests (fetch)