feat(14-08): add cache settings API/store wiring for Settings integration

- Fix getCacheSettings/updateCacheSettings URLs to use /api/cloud/analysis/cache
  and /api/cloud/analysis/cache/settings (Rule 1: wrong URLs per Plan 14-03 backend)
- Add loadCacheSettings action: hydrates tierCapBytes, cacheUsage, cacheLimit,
  detailedAnalysisProgress, failureBehavior from server without clearing on error
- Add tierCapBytes, cacheUsage, cacheSettingsLoading, cacheSettingsError state
- updateCacheSettings merges full CacheStatusOut response into local state

frontend/src/api/cloud.js

@@ -354,19 +354,28 @@ export function retryAnalysisItem(jobId, itemId) {
 }
 
 /**
- * Get the current user cache settings.
+ * Get the current user cache status and analysis settings.
  *
- * Returns { cloud_cache_limit_bytes, ... }
+ * Returns CacheStatusOut: { entry_count, total_bytes, cache_limit_bytes,
+ *   tier_cap_bytes, analysis_progress_detail, analysis_failure_behavior }
+ *
+ * Never includes object_key, credentials_enc, or raw provider URLs (T-14-02/T-14-08).
  */
 export function getCacheSettings() {
-  return request('/api/users/me/settings')
+  return request('/api/cloud/analysis/cache')
 }
 
 /**
- * Update the current user cache settings.
+ * Update the current user analysis settings and/or cache limit.
  *
- * @param {{ cloud_cache_limit_bytes?: number }} params
+ * PATCH /api/cloud/analysis/cache/settings
+ * Body fields (all optional): cloud_cache_limit_bytes, analysis_progress_detail,
+ *   analysis_failure_behavior.
+ * Returns fresh CacheStatusOut after update.
+ *
+ * @param {{ cloud_cache_limit_bytes?: number, analysis_progress_detail?: boolean,
+ *            analysis_failure_behavior?: string }} params
  */
 export function updateCacheSettings(params) {
-  return jsonRequest('/api/users/me/settings', 'PATCH', params)
+  return jsonRequest('/api/cloud/analysis/cache/settings', 'PATCH', params)
 }