Fix child process env: spread process.env before CODEX_HOME override

The env option on ChildProcess.make was set to only { CODEX_HOME: ... }
without spreading process.env, causing the spawned codex exec process to
lose all inherited environment variables (PATH, HOME, API keys, etc.).
This matches the pattern used in codexAppServerManager.ts and
CodexProvider.ts.

Author: cursoragent

apps/server/src/git/Layers/CodexTextGeneration.ts

@@ -172,7 +172,10 @@ const makeCodexTextGeneration = Effect.gen(function* () {
             "-",
           ],
           {
-            env: codexSettings?.homePath ? { CODEX_HOME: codexSettings.homePath } : {},
+            env: {
+              ...process.env,
+              ...(codexSettings?.homePath ? { CODEX_HOME: codexSettings.homePath } : {}),
+            },
             cwd,
             shell: process.platform === "win32",
             stdin: {