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/styles.css

@@ -2794,3 +2794,151 @@ button.danger-solid {
   align-items: center;
   gap: 6px;
 }
+
+/* --- web terminal -------------------------------------------------------------- */
+.term-tabs {
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  overflow-x: auto;
+  min-width: 0;
+}
+.term-tab {
+  display: inline-flex;
+  align-items: center;
+  border-radius: 8px;
+  white-space: nowrap;
+}
+.term-tab.active {
+  background: var(--bg2);
+}
+.term-tab.dead {
+  opacity: 0.6;
+}
+.term-wrap {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  position: relative;
+  background: var(--bg0);
+}
+.term-host {
+  flex: 1;
+  min-height: 0;
+  padding: 6px 8px;
+}
+.term-host .xterm {
+  height: 100%;
+}
+.term-state {
+  position: absolute;
+  top: 8px;
+  right: 12px;
+  font-size: 12px;
+  color: var(--fg3);
+  background: var(--bg1);
+  padding: 3px 8px;
+  border-radius: 6px;
+}
+.term-keys {
+  display: none;
+  gap: 4px;
+  padding: 6px;
+  border-top: 1px solid var(--bg2);
+  overflow-x: auto;
+  padding-bottom: max(6px, env(safe-area-inset-bottom));
+}
+.term-keys button {
+  flex: 1;
+  min-width: 42px;
+  padding: 8px 6px;
+  font-family: var(--mono);
+  font-size: 13px;
+}
+.term-keys button.active {
+  background: var(--accent);
+  color: var(--on-accent);
+}
+@media (pointer: coarse), (max-width: 700px) {
+  .term-keys {
+    display: flex;
+  }
+}
+
+.gitcred-list {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+.gitcred-row {
+  display: grid;
+  grid-template-columns: 2fr 1.3fr 1.6fr auto;
+  gap: 6px;
+  align-items: center;
+}
+@media (max-width: 700px) {
+  .gitcred-row {
+    grid-template-columns: 1fr 1fr auto;
+  }
+  .gitcred-row input:first-child {
+    grid-column: 1 / -1;
+  }
+}
+
+.refine-card {
+  border-color: var(--purple);
+}
+.refine-card summary .icon {
+  color: var(--purple);
+}
+
+/* --- automations ---------------------------------------------------------------- */
+.job.off {
+  opacity: 0.65;
+}
+.job-head {
+  display: flex;
+  align-items: flex-start;
+  gap: 12px;
+}
+.job-head h3 {
+  margin: 0;
+}
+.job-icon {
+  width: 26px;
+  height: 26px;
+  color: var(--accent);
+  margin-top: 2px;
+}
+.job-grid {
+  display: grid;
+  grid-template-columns: 120px 1fr;
+  gap: 6px 12px;
+  margin-top: 12px;
+  font-size: 13.5px;
+}
+.job-grid > span:nth-child(odd) {
+  color: var(--fg3);
+}
+.job-prompt {
+  margin-top: 10px;
+}
+.job-prompt pre,
+.job-example {
+  white-space: pre-wrap;
+  background: var(--bg1);
+  padding: 10px;
+  border-radius: 8px;
+  font-size: 12.5px;
+}
+.switch {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  cursor: pointer;
+  font-size: 13px;
+}
+.chip.ok {
+  color: var(--green);
+}