Update: 将子项目从 submodule 转为完整内容

- 移除 GovAI, nomifun-tauri, 算力盒子 的 submodule 引用
- 添加所有子项目的完整源代码
- 保留原始 .git 为 .git.bak 备份

nomifun-tauri/crates/backend/nomifun-runtime/tests/extract_integration.rs

@@ -0,0 +1,40 @@
+//! Integration tests for `nomifun_runtime` extraction.
+
+use std::fs;
+use std::io::Write;
+use tempfile::TempDir;
+
+fn make_zstd_blob(payload: &[u8]) -> Vec<u8> {
+    let mut out = Vec::new();
+    let mut enc = zstd::stream::write::Encoder::new(&mut out, 0).unwrap();
+    enc.write_all(payload).unwrap();
+    enc.finish().unwrap();
+    out
+}
+
+fn sha256_hex(bytes: &[u8]) -> String {
+    use sha2::{Digest, Sha256};
+    let mut h = Sha256::new();
+    h.update(bytes);
+    hex::encode(h.finalize())
+}
+
+#[test]
+fn zstd_roundtrip_produces_matching_bytes() {
+    let payload = b"#!/bin/sh\necho fake-bun\n";
+    let blob = make_zstd_blob(payload);
+
+    let mut dec = zstd::stream::read::Decoder::new(&blob[..]).unwrap();
+    let mut out = Vec::new();
+    std::io::copy(&mut dec, &mut out).unwrap();
+    assert_eq!(out, payload);
+    assert_eq!(sha256_hex(&out).len(), 64);
+}
+
+#[test]
+fn temp_dir_fixture_available() {
+    let tmp = TempDir::new().unwrap();
+    let p = tmp.path().join("probe");
+    fs::write(&p, b"x").unwrap();
+    assert!(p.is_file());
+}