Tell agents about stored git credentials; give Claude Code the user's git config

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server/src/claude_code.rs

@@ -97,7 +97,14 @@ fn command(app: &App, owner: Option<&str>, cwd: &Path, args: &[String]) -> Resul
             c.env(k, v);
         }
     }
-    c.env("TERM", "xterm-256color").env("CODECRAFT", "1").args(args);
+    c.env("TERM", "xterm-256color").env("CODECRAFT", "1").env("GIT_TERMINAL_PROMPT", "0").args(args);
+    // The user's git credentials and identity (the CLI runs git for the agent).
+    if let Some(user) = owner.and_then(|id| app.store.user(id).ok().flatten()) {
+        if let Some(cfg) = crate::gitcreds::global_config(app, &user) {
+            c.env("GIT_CONFIG_GLOBAL", cfg);
+        }
+        c.envs(crate::gitcreds::identity_env(app, &user.id));
+    }
     Ok(c)
 }
 
@@ -357,8 +364,12 @@ pub async fn run(app: Arc<App>, session_id: &str, cancel: CancellationToken) ->
     if let Some(r) = &resume {
         args.extend(["--resume".into(), r.clone()]);
     }
-    if !session.instructions.trim().is_empty() {
-        args.extend(["--append-system-prompt".into(), session.instructions.trim().to_string()]);
+    let mut appended = session.instructions.trim().to_string();
+    if let Some(git) = owner.as_deref().and_then(|u| crate::gitcreds::prompt_section(&app, u)) {
+        appended = format!("{appended}\n{git}").trim().to_string();
+    }
+    if !appended.is_empty() {
+        args.extend(["--append-system-prompt".into(), appended]);
     }
 
     let mut cmd = command(&app, owner.as_deref(), Path::new(&session.cwd), &args)?;