fix: limit history pagination to prevent 40s response times

The full pagination fix (ddad80a, e772001) caused history retrieval to
fetch up to 50 pages sequentially, taking 10-40 seconds instead of ~200ms.

Changes:
- Add maxPages parameter to getHistory() with default of 1 page
- Update poller to fetch 50 records (up from 10) in a single API call
- historyFetcher retains 100 records per page for UI display

This provides 5x more history for matching than before while keeping
the fast single-request performance.

Refs: develop-merge pagination performance issue

server/clients/PollingRadarrRetriever.js

@@ -71,7 +71,8 @@ class PollingRadarrRetriever extends ArrRetriever {
   /**
    * Get history from Radarr instance
    * @param {Object} options - Optional parameters for history fetch
-   * @param {number} [options.pageSize=10] - Number of records to fetch
+   * @param {number} [options.pageSize=100] - Number of records to fetch per page
+   * @param {number} [options.maxPages=1] - Maximum pages to fetch (for pagination control)
    * @param {string} [options.sortKey] - Field to sort by
    * @param {string} [options.sortDir] - Sort direction ('ascending' or 'descending')
    * @param {boolean} [options.includeMovie=true] - Include movie data
@@ -81,6 +82,7 @@ class PollingRadarrRetriever extends ArrRetriever {
   async getHistory(options = {}) {
     const {
       pageSize = 100,
+      maxPages = 1,
       sortKey,
       sortDir,
       includeMovie = true,
@@ -119,7 +121,7 @@ class PollingRadarrRetriever extends ArrRetriever {
       page++;
     } while (
       (responseData.records || (Array.isArray(responseData) ? responseData : [])).length === pageSize &&
-      page <= 50
+      page <= maxPages
     );
 
     return {

server/clients/PollingSonarrRetriever.js

@@ -71,7 +71,8 @@ class PollingSonarrRetriever extends ArrRetriever {
   /**
    * Get history from Sonarr instance
    * @param {Object} options - Optional parameters for history fetch
-   * @param {number} [options.pageSize=10] - Number of records to fetch
+   * @param {number} [options.pageSize=100] - Number of records to fetch per page
+   * @param {number} [options.maxPages=1] - Maximum pages to fetch (for pagination control)
    * @param {string} [options.sortKey] - Field to sort by
    * @param {string} [options.sortDir] - Sort direction ('ascending' or 'descending')
    * @param {boolean} [options.includeSeries=true] - Include series data
@@ -82,6 +83,7 @@ class PollingSonarrRetriever extends ArrRetriever {
   async getHistory(options = {}) {
     const {
       pageSize = 100,
+      maxPages = 1,
       sortKey,
       sortDir,
       includeSeries = true,
@@ -122,7 +124,7 @@ class PollingSonarrRetriever extends ArrRetriever {
       page++;
     } while (
       (responseData.records || (Array.isArray(responseData) ? responseData : [])).length === pageSize &&
-      page <= 50
+      page <= maxPages
     );
 
     return {

server/utils/poller.js

@@ -118,7 +118,7 @@ async function pollAllServices() {
         return queuesByType.sonarr || [];
       }) : timed('Sonarr Queue', async () => []),
       shouldPollSonarr ? timed('Sonarr History', async () => {
-        const historyByType = await arrRetrieverRegistry.getHistoryByType({ pageSize: 10 });
+        const historyByType = await arrRetrieverRegistry.getHistoryByType({ pageSize: 50 });
         return historyByType.sonarr || [];
       }) : timed('Sonarr History', async () => []),
       shouldPollRadarr ? timed('Radarr Queue', async () => {
@@ -126,7 +126,7 @@ async function pollAllServices() {
         return queuesByType.radarr || [];
       }) : timed('Radarr Queue', async () => []),
       shouldPollRadarr ? timed('Radarr History', async () => {
-        const historyByType = await arrRetrieverRegistry.getHistoryByType({ pageSize: 10 });
+        const historyByType = await arrRetrieverRegistry.getHistoryByType({ pageSize: 50 });
         return historyByType.radarr || [];
       }) : timed('Radarr History', async () => []),
       shouldPollRadarr ? timed('Radarr Tags', async () => {