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>

web/src/components/NewSession.tsx

@@ -85,6 +85,12 @@ const ICONS: Record<string, ReactNode> = {
       <path d="m20 20-4.5-4.5M9 9l4 4M13 9l-4 4" />
     </>,
   ),
+  cad: svg(
+    <>
+      <path d="m12 3 8 4.5v9L12 21l-8-4.5v-9Z" />
+      <path d="m4 7.5 8 4.5 8-4.5M12 12v9" />
+    </>,
+  ),
   folder: svg(<path d="M3 6a1 1 0 0 1 1-1h5l2 2h9a1 1 0 0 1 1 1v10a1 1 0 0 1-1 1H4a1 1 0 0 1-1-1Z" />),
   git: svg(
     <>
@@ -190,12 +196,12 @@ export function NewSession({ onMenu, onCreated }: { onMenu: () => void; onCreate
   }, [target]);
   // Working on existing code usually happens in an existing folder.
   useEffect(() => {
-    setFolderMode((m) => (m === "git" ? m : task === "craft" ? "new" : "existing"));
+    setFolderMode((m) => (m === "git" ? m : task === "craft" || task === "cad" ? "new" : "existing"));
   }, [task]);
 
   const repoName = repoUrl.trim().replace(/\/+$/, "").replace(/\.git$/, "").split(/[/:]/).pop() ?? "";
   const autoName = useMemo(
-    () => (folderMode === "git" && repoName ? slug(repoName) : "") || slug(target === "website" && url ? url : text) || (task === "craft" ? `${target}-project` : "project"),
+    () => (folderMode === "git" && repoName ? slug(repoName) : "") || slug(target === "website" && url ? url : text) || (task === "craft" ? `${target}-project` : task === "cad" ? "3d-model" : "project"),
     [text, url, target, task, folderMode, repoName],
   );
   useEffect(() => {
@@ -203,7 +209,9 @@ export function NewSession({ onMenu, onCreated }: { onMenu: () => void; onCreate
   }, [autoName, nameTouched]);
 
   const ideas: Key[] =
-    task !== "craft"
+    task === "cad"
+      ? ["wizard.idea.cadBox", "wizard.idea.cadBracket"]
+      : task !== "craft"
       ? task === "plan"
         ? ["wizard.idea.planFeature", "wizard.idea.planRefactor"]
         : ["wizard.idea.buildTests", "wizard.idea.buildBug"]
@@ -238,6 +246,7 @@ export function NewSession({ onMenu, onCreated }: { onMenu: () => void; onCreate
   const prompts = (uploaded: string[]): string[] => {
     const desc = text.trim();
     const fileList = uploaded.length ? `\n\nFiles: ${uploaded.join(", ")}` : "";
+    if (task === "cad") return [`/cad ${desc}${images.length ? " (sketch attached)" : ""}${fileList}`];
     if (task !== "craft") return [desc + fileList];
     switch (target) {
       case "website":
@@ -311,7 +320,7 @@ export function NewSession({ onMenu, onCreated }: { onMenu: () => void; onCreate
       const s = await post<{ id: string }>("/sessions", {
         cwd,
         model: model || undefined,
-        agent: task,
+        agent: task === "cad" ? "build" : task,
         clean_room: isCraft ? !deep : undefined,
       });
       const msgs = prompts(uploaded).filter((m) => m.trim());
@@ -343,6 +352,7 @@ export function NewSession({ onMenu, onCreated }: { onMenu: () => void; onCreate
             <Step n={n++} title={t("wizard.whatToDo")}>
               <div className="wiz-cards">
                 <Card icon="craft" title={t("wizard.task.craft")} desc={t("wizard.task.craftDesc")} active={task === "craft"} onClick={() => setTask("craft")} />
+                <Card icon="cad" title={t("wizard.task.cad")} desc={t("wizard.task.cadDesc")} active={task === "cad"} onClick={() => setTask("cad")} />
                 <Card icon="build" title={t("wizard.task.build")} desc={t("wizard.task.buildDesc")} active={task === "build"} onClick={() => setTask("build")} />
                 <Card icon="plan" title={t("wizard.task.plan")} desc={t("wizard.task.planDesc")} active={task === "plan"} onClick={() => setTask("plan")} />
                 {custom.map((a) => (
@@ -436,7 +446,7 @@ export function NewSession({ onMenu, onCreated }: { onMenu: () => void; onCreate
               >
                 <textarea
                   value={text}
-                  placeholder={t(task === "craft" ? (`wizard.placeholder.${target}` as Key) : "wizard.placeholder.task")}
+                  placeholder={t(task === "craft" ? (`wizard.placeholder.${target}` as Key) : task === "cad" ? "wizard.placeholder.cad" : "wizard.placeholder.task")}
                   onChange={(e) => setText(e.target.value)}
                   onPaste={(e) => {
                     if (e.clipboardData.files.length) {