refactor: load environment variables from .env file and update openRouter configuration

workers/signalWorker.js

@@ -77,7 +77,7 @@ async function runSignalWorker(archiveDb, intelligenceDb, config) {
       const next = getNextCheckpoint.get();
 
       if (!next) {
-        await sleep(loopDelay);
+        await sleep(5000);
         continue;
       }
 
@@ -85,7 +85,6 @@ async function runSignalWorker(archiveDb, intelligenceDb, config) {
       const company = getCompanyById.get(company_id);
 
       if (!company) {
-        await sleep(loopDelay);
         continue;
       }
 
@@ -100,13 +99,11 @@ async function runSignalWorker(archiveDb, intelligenceDb, config) {
         result = await callLlm(llmConfig, prompt);
       } catch (err) {
         console.error(`[signal] LLM error for ${company.name} @ ${checkpoint_date}:`, err.message);
-        await sleep(loopDelay);
         continue;
       }
 
       if (!result) {
         console.log(`[signal] ${company.name} @ ${checkpoint_date} — LLM returned null, skipping`);
-        await sleep(loopDelay);
         continue;
       }
 
@@ -135,8 +132,6 @@ async function runSignalWorker(archiveDb, intelligenceDb, config) {
     } catch (err) {
       console.error("[signal] cycle error:", err.message);
     }
-
-    await sleep(loopDelay);
   }
 }