feat(ai-settings): status dot shows configured x enabled, not test result

The endpoint header dot previously reflected only the last manual 'Test
endpoint' result (green=ok / red=fail / gray=never tested), so a configured,
enabled endpoint looked gray until probed. Rebind it to a synchronous
derivation from the form + feature toggle (no network):
  ready (green)        configured AND enabled
  configured (yellow)  configured but feature off
  misconfigured(orange) feature on but not configured (real misconfig)
  off (gray)           not configured and not enabled
'Configured' = model filled AND a Base URL present (own or inherited from
Chat); API key not required (local servers). Adds a Tooltip on the dot so
color isn't the only signal. The Test button result stays as text.

Implements docs/backlog/ai-endpoint-status-dot-config-enabled.md.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/client/public/locales/en-US/translation.json

@@ -722,6 +722,10 @@
   "Connection successful": "Connection successful",
   "Connection failed": "Connection failed",
   "Only workspace admins can manage AI provider settings.": "Only workspace admins can manage AI provider settings.",
+  "Configured and enabled": "Configured and enabled",
+  "Configured but disabled": "Configured but disabled",
+  "Enabled but not configured": "Enabled but not configured",
+  "Not configured": "Not configured",
   "Sources": "Sources",
   "AI Answers not available for attachments": "AI Answers not available for attachments",
   "No answer available": "No answer available",

apps/client/src/features/workspace/components/settings/components/ai-provider-settings.tsx

@@ -15,6 +15,7 @@ import {
   Text,
   Textarea,
   TextInput,
+  Tooltip,
   useMantineTheme,
 } from "@mantine/core";
 import { useForm } from "@mantine/form";
@@ -60,8 +61,19 @@ const formSchema = z.object({
 
 type FormValues = z.infer<typeof formSchema>;
 
-// Status of an endpoint card, drives the little status dot color.
-type CardStatus = "ok" | "error" | "idle";
+// Endpoint health shown by the header dot, derived synchronously from the
+// form + feature toggle (never from a network probe — the "Test endpoint"
+// button still shows the live probe result as text).
+//   "ready"      (green)  — configured AND enabled
+//   "configured" (yellow) — configured but the feature is OFF
+//   "misconfigured" (orange/red warning) — enabled but NOT configured (real misconfig)
+//   "off"        (gray)   — not configured and not enabled (nothing to enable)
+type CardStatus = "ready" | "configured" | "misconfigured" | "off";
+
+function resolveCardStatus(configured: boolean, enabled: boolean): CardStatus {
+  if (configured) return enabled ? "ready" : "configured";
+  return enabled ? "misconfigured" : "off";
+}
 
 // Resolve a "Base URL + path" hint defensively: trim a single trailing slash
 // off the base, then append the path. Empty base falls back to `fallback`
@@ -71,21 +83,35 @@ function resolveUrl(base: string, path: string, fallback = ""): string {
   return `${trimmed}${path}`;
 }
 
-// Small colored dot used in each card header.
+// Small colored dot used in each card header. Wrapped in a Tooltip so the
+// state is conveyed by text too — color must not be the only signal (a11y).
 function StatusDot({ status }: { status: CardStatus }) {
   const theme = useMantineTheme();
+  const { t } = useTranslation();
   const color =
-    status === "ok"
+    status === "ready"
       ? theme.colors.green[6]
-      : status === "error"
-        ? theme.colors.red[6]
+      : status === "configured"
+        ? theme.colors.yellow[6]
+        : status === "misconfigured"
+          ? theme.colors.orange[6]
           : theme.colors.gray[5];
+  const label =
+    status === "ready"
+      ? t("Configured and enabled")
+      : status === "configured"
+        ? t("Configured but disabled")
+        : status === "misconfigured"
+          ? t("Enabled but not configured")
+          : t("Not configured");
   return (
+    <Tooltip label={label} withArrow>
       <Box
         w={9}
         h={9}
         style={{ borderRadius: "50%", background: color, flex: "none" }}
       />
+    </Tooltip>
   );
 }
 
@@ -353,21 +379,24 @@ export default function AiProviderSettings() {
     );
   }
 
-  const chatStatus: CardStatus = chatTest.data
-    ? chatTest.data.ok
-      ? "ok"
-      : "error"
-    : "idle";
-  const embedStatus: CardStatus = embedTest.data
-    ? embedTest.data.ok
-      ? "ok"
-      : "error"
-    : "idle";
-  const sttStatus: CardStatus = sttTest.data
-    ? sttTest.data.ok
-      ? "ok"
-      : "error"
-    : "idle";
+  // "Configured" = model filled AND a Base URL available (own or inherited from
+  // Chat). API key is intentionally NOT required — local servers (Ollama,
+  // speaches / faster-whisper-server) need none. Derived live from form.values
+  // so the dot reacts while typing. Compare after .trim() (values may have
+  // surrounding whitespace).
+  const v = form.values;
+  const chatBase = v.baseUrl.trim();
+  const chatConfigured = v.chatModel.trim() !== "" && chatBase !== "";
+  const embedConfigured =
+    v.embeddingModel.trim() !== "" &&
+    (v.embeddingBaseUrl.trim() !== "" || chatBase !== "");
+  const sttConfigured =
+    v.sttModel.trim() !== "" &&
+    (v.sttBaseUrl.trim() !== "" || chatBase !== "");
+
+  const chatStatus = resolveCardStatus(chatConfigured, chatEnabled);
+  const embedStatus = resolveCardStatus(embedConfigured, searchEnabled);
+  const sttStatus = resolveCardStatus(sttConfigured, dictationEnabled);
 
   const chatResolved = resolveUrl(form.values.baseUrl, "/chat/completions");
   const embedResolved = resolveUrl(