refactor(hermes): drop config health check scanner

The Hermes config.yaml schema has stabilized and users have migrated to
the current provider fields, so the value of scanning for model.provider
dangling references, custom_providers shape errors, v12 migration residue
etc. no longer justifies the maintenance surface — and the scan produces
false positives when users keep some providers under Hermes' v12+
providers: dict (Hermes' runtime merges both shapes, but CC Switch's
scanner only looked at the list form).

Removes the whole HermesHealthWarning type, scan_hermes_config_health
command, HermesHealthBanner React component, useHermesHealth hook,
warnings field on HermesWriteOutcome, and the three helper functions
(yaml_as_non_empty_str, collect_mapping_string_keys, hermes_warning)
that only served the scanner. Drops the matching i18n keys in
zh/en/ja and the fixInWebUI button label that only the banner used.

src/components/hermes/HermesHealthBanner.tsx

@@ -1,127 +0,0 @@
-import React, { useMemo } from "react";
-import { useTranslation } from "react-i18next";
-import { ExternalLink, TriangleAlert } from "lucide-react";
-import { Alert, AlertDescription, AlertTitle } from "@/components/ui/alert";
-import { Button } from "@/components/ui/button";
-import { useOpenHermesWebUI } from "@/hooks/useHermes";
-import type { HermesHealthWarning } from "@/types";
-
-interface HermesHealthBannerProps {
-  warnings: HermesHealthWarning[];
-}
-
-function getWarningText(
-  code: string,
-  fallback: string,
-  t: ReturnType<typeof useTranslation>["t"],
-) {
-  switch (code) {
-    case "config_parse_failed":
-      return t("hermes.health.parseFailed", {
-        defaultValue:
-          "config.yaml could not be parsed as valid YAML. Fix the file before editing it here.",
-      });
-    case "config_not_found":
-      return t("hermes.health.configNotFound", {
-        defaultValue:
-          "Hermes config.yaml not found. Create it at ~/.hermes/config.yaml or configure the path in settings.",
-      });
-    case "env_parse_failed":
-      return t("hermes.health.envParseFailed", {
-        defaultValue: "The .env file could not be parsed.",
-      });
-    case "model_no_default":
-      return t("hermes.health.modelNoDefault", {
-        defaultValue:
-          "No default model or provider is configured in the 'model' section.",
-      });
-    case "custom_providers_not_list":
-      return t("hermes.health.customProvidersNotList", {
-        defaultValue:
-          "custom_providers should be a YAML list (items prefixed with '-'), not a mapping.",
-      });
-    case "model_provider_unknown":
-      return t("hermes.health.modelProviderUnknown", {
-        defaultValue:
-          "model.provider references a provider that is not configured.",
-      });
-    case "model_default_not_in_provider":
-      return t("hermes.health.modelDefaultNotInProvider", {
-        defaultValue:
-          "model.default is not in the selected provider's models list.",
-      });
-    case "duplicate_provider_name":
-      return t("hermes.health.duplicateProviderName", {
-        defaultValue:
-          "custom_providers contains duplicate provider names — only one entry will be used.",
-      });
-    case "duplicate_provider_base_url":
-      return t("hermes.health.duplicateProviderBaseUrl", {
-        defaultValue:
-          "custom_providers contains duplicate base_urls — possible accidental copy.",
-      });
-    case "schema_migrated_v12":
-      return t("hermes.health.schemaMigratedV12", {
-        defaultValue:
-          "Hermes' newer schema moved some providers into the 'providers:' dict. They are shown read-only in CC Switch — edit or remove those entries via Hermes Web UI.",
-      });
-    default:
-      return fallback;
-  }
-}
-
-const HermesHealthBanner: React.FC<HermesHealthBannerProps> = ({
-  warnings,
-}) => {
-  const { t } = useTranslation();
-  const openHermesWebUI = useOpenHermesWebUI();
-
-  const items = useMemo(
-    () =>
-      warnings.map((warning) => ({
-        ...warning,
-        text: getWarningText(warning.code, warning.message, t),
-      })),
-    [t, warnings],
-  );
-
-  if (warnings.length === 0) {
-    return null;
-  }
-
-  return (
-    <div className="px-6 pt-4">
-      <Alert className="border-amber-500/30 bg-amber-500/5">
-        <TriangleAlert className="h-4 w-4" />
-        <AlertTitle className="flex items-center justify-between gap-2">
-          <span>
-            {t("hermes.health.title", {
-              defaultValue: "Hermes config warnings detected",
-            })}
-          </span>
-          <Button
-            variant="outline"
-            size="sm"
-            onClick={() => void openHermesWebUI("/config")}
-            className="shrink-0"
-          >
-            <ExternalLink className="w-3.5 h-3.5 mr-1" />
-            {t("hermes.webui.fixInWebUI")}
-          </Button>
-        </AlertTitle>
-        <AlertDescription>
-          <ul className="list-disc space-y-1 pl-5">
-            {items.map((warning) => (
-              <li key={`${warning.code}:${warning.path ?? warning.message}`}>
-                {warning.text}
-                {warning.path ? ` (${warning.path})` : ""}
-              </li>
-            ))}
-          </ul>
-        </AlertDescription>
-      </Alert>
-    </div>
-  );
-};
-
-export default HermesHealthBanner;