Add web terminal, git credentials, OpenSCAD, review loops, automations

- Web terminal (PTY over WebSocket, xterm.js, sandboxed, reattach with replay)
- Per-user git credentials and commit identity (credential store in the user's home)
- OpenSCAD tool (STL/3MF + preview renders, bounding box) and cad skill; 3D model card
- Craft phase inferred from tool activity when the agent does not report it
- Configurable review loop per mode (rounds, reviewer model, criteria)
- Delete config and Markdown agents from the agent editor
- Automations: cron-scheduled agents from Markdown job files, schedule tool, page
- change_directory tool (only on the user's request)

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

server/src/tools/bash.rs

@@ -148,6 +148,11 @@ pub fn shell_command(ctx: &ToolCtx, command: &str) -> std::result::Result<Comman
         None => {
             let mut c = Command::new("bash");
             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);
+            }
             c
         }
     })