`scriptc run` command functionality and Windows compatibility.

**Environment**
- OS: Windows 10/11 (native, not WSL)
- scriptc: 0.0.16
- Node.js: v26.3.1
- clang: 22.1.8 (LLVM, installed via winget)
- Shell tested: PowerShell and Git Bash (MINGW64) — same result in both

**Steps to reproduce**
1. `npm install -g scriptc`
2. Create a plain `fib.ts`:
```ts
function fib(n: number): number {
return n < 2 ? n : fib(n - 1) + fib(n - 2);
}
console.log(fib(30));
```
3. Run `scriptc run fib.ts`

**Expected**
`832040` printed to stdout, per the README example.

**Actual**
```
file:///C:/Users/KHALED/AppData/Roaming/npm/node_modules/scriptc/node_modules/@scriptc/compiler/dist/frontend/ts7/program.js:130
throw new Error(`ts7 createProgram: project failed to open for ${first}`);
^
Error: ts7 createProgram: project failed to open for C:\Users\KHALED\fib.ts
at Ts7Host.createProgram (.../frontend/ts7/program.js:130:19)
at Module.createProgram (.../frontend/ts7/program.js:221:21)
at loadProgram7 (.../frontend/program.js:171:24)
at loadProgram (.../frontend/program.js:226:18)
at runFrontend (.../index.js:237:16)
at compile (.../index.js:466:16)
at build (.../scriptc/dist/main.js:231:30)
at main (.../scriptc/dist/main.js:260:26)
at .../scriptc/dist/main.js:279:30
at ModuleJob.run (node:internal/modules/esm/module_job:439:25)
Node.js v26.3.1
```

**Troubleshooting already tried (no change)**
- Different project folders (including outside OneDrive/Desktop, directly under `C:\Users\KHALED...