Agent test UI: pick tools and agents rather than type them

src/lib/langs/en.json

@@ -665,5 +665,16 @@
     "Worth checking:": "Worth checking:",
     "changed by chat": "changed by chat",
     "New Case by Chat": "New Case by Chat",
-    "This suite has no judge model configured, so chat authoring has no default to fall back on -- pick one above.": "This suite has no judge model configured, so chat authoring has no default to fall back on -- pick one above."
+    "This suite has no judge model configured, so chat authoring has no default to fall back on -- pick one above.": "This suite has no judge model configured, so chat authoring has no default to fall back on -- pick one above.",
+    "Search tools": "Search tools",
+    "Pick a tool": "Pick a tool",
+    "Pick an agent": "Pick an agent",
+    "Type a name instead": "Type a name instead",
+    "Pick from the list": "Pick from the list",
+    "agent name or id": "agent name or id",
+    "Add an agent to the chain": "Add an agent to the chain",
+    "Move earlier": "Move earlier",
+    "Move later": "Move later",
+    "Remove agent from the chain": "Remove agent from the chain",
+    "No tools found for the agents on this case. Add the agent under Involved agents, or type the name.": "No tools found for the agents on this case. Add the agent under Involved agents, or type the name."
 }

src/lib/langs/zh.json

@@ -859,5 +859,16 @@
     "Worth checking:": "建议确认一下：",
     "changed by chat": "对话改动过",
     "New Case by Chat": "用对话新建",
-    "This suite has no judge model configured, so chat authoring has no default to fall back on -- pick one above.": "这个套件没有配置判官模型，对话出题也就没有默认可用的模型——请在上面选一个。"
+    "This suite has no judge model configured, so chat authoring has no default to fall back on -- pick one above.": "这个套件没有配置判官模型，对话出题也就没有默认可用的模型——请在上面选一个。",
+  "Search tools": "搜索工具",
+  "Pick a tool": "选择工具",
+  "Pick an agent": "选择 Agent",
+  "Type a name instead": "改为手动输入",
+  "Pick from the list": "改为从列表选择",
+  "agent name or id": "Agent 名称或 id",
+  "Add an agent to the chain": "往调用链里加一个 Agent",
+  "Move earlier": "前移",
+  "Move later": "后移",
+  "Remove agent from the chain": "从调用链里移除",
+  "No tools found for the agents on this case. Add the agent under Involved agents, or type the name.": "这条用例涉及的 Agent 没有查到可用工具。可以在\"涉及的 Agent\"里补上对应 Agent，或者手动输入工具名。"
 }

src/lib/styles/pages/_agent-test.scss

@@ -474,6 +474,54 @@
     color: var(--ats-tone);
 }
 
+/* ========================================================================
+ * Agent chain editor
+ *
+ * The expected list of an agentChain assertion. Chips rather than a text field
+ * because the order is the assertion in `ordered`/`exact` mode, and a chip can
+ * carry its own move and remove controls.
+ * ======================================================================== */
+
+.ats-chain {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.375rem;
+    margin-bottom: 0.375rem;
+}
+
+/* Inline control inside a chip: sized down to the chip's own line-height so a
+   chip with three of them stays the height of a plain badge. */
+.ats-chip-btn {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    width: 1rem;
+    height: 1rem;
+    padding: 0;
+    border: 0;
+    border-radius: 0.1875rem;
+    background: transparent;
+    color: inherit;
+    line-height: 1;
+
+    & i {
+        font-size: 0.875rem;
+    }
+
+    &:hover:not(:disabled) {
+        background-color: color-mix(in srgb, var(--ats-tone) 25%, transparent);
+    }
+
+    &:disabled {
+        opacity: 0.35;
+    }
+}
+
+.ats-chip-index {
+    opacity: 0.7;
+    font-variant-numeric: tabular-nums;
+}
+
 /* ========================================================================
  * Alerts (replaces .alert.alert-danger / -warning / -info)
  * ======================================================================== */