Git identity from the settings for all agent shells, terminals and the git panel

Set GIT_AUTHOR_*/GIT_COMMITTER_* from Settings → Account → Git (also inside the
sandbox), so a repository's own user.name/user.email no longer wins; tell agents
not to change the git identity.

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

server/src/tools/bash.rs

@@ -150,8 +150,11 @@ pub fn shell_command(ctx: &ToolCtx, command: &str) -> std::result::Result<Comman
             c.arg("-c").arg(&script).current_dir(&ctx.cwd).env("CODECRAFT", "1").env("GIT_TERMINAL_PROMPT", "0").env("PAGER", "cat");
             // The session owner's git credentials and identity.
             let owner = ctx.app.session(&ctx.session_id).ok().and_then(|s| s.owner_id).and_then(|id| ctx.app.store.user(&id).ok().flatten());
-            if let Some(cfg) = owner.and_then(|u| crate::gitcreds::global_config(&ctx.app, &u)) {
-                c.env("GIT_CONFIG_GLOBAL", cfg);
+            if let Some(u) = owner {
+                if let Some(cfg) = crate::gitcreds::global_config(&ctx.app, &u) {
+                    c.env("GIT_CONFIG_GLOBAL", cfg);
+                }
+                c.envs(crate::gitcreds::identity_env(&ctx.app, &u.id));
             }
             c
         }