Add exponential backoff retry to all downstream calls

New controller/retry.js wraps async calls with infinite retries, capped

at 30s with jitter. Applied to: TPB search, TMDB, Emby, Ollama chat,

Transmission RPC, and the status/status interval calls inherit it via

a Proxy around the Transmission client.

Also handles ollama package returning pre-parsed JSON objects.

Signed-off-by: William Mantly <wmantly@gmail.com>

controller/emby.js

@@ -1,18 +1,13 @@
 'use strict';
 
 const conf = require('>/conf');
+const { fetchWithRetry } = require('./retry');
 
 // Ask Emby to (re)scan its libraries so a newly filed item gets indexed.
 async function refresh(){
-	let res = await fetch(`${conf.emby.url}/Library/Refresh?api_key=${conf.emby.apiKey}`, {
+	let res = await fetchWithRetry(`${conf.emby.url}/Library/Refresh?api_key=${conf.emby.apiKey}`, {
 		method: 'POST',
-	});
-	if(!res.ok){
-		let error = new Error('EmbyError');
-		error.message = `Emby library refresh failed( ${res.status})`;
-		error.status = 502;
-		throw error;
-	}
+	}, { label: 'emby refresh' });
 	return true;
 }