feat(api): add BROWSER_CONTENT_PROCESSES env var

apps/api/src/index.ts

@@ -22,6 +22,10 @@ const POOL_SIZE = Number(process.env.BROWSER_POOL_SIZE ?? "3")
 const ACQUIRE_TIMEOUT_MS = Number(process.env.BROWSER_ACQUIRE_TIMEOUT_MS ?? "15000")
 const SESSION_TTL = Number(process.env.SESSION_TTL_SECONDS ?? "3600")
 const RECYCLE_AFTER_TEMPORARY_CONTEXTS = Number(process.env.BROWSER_RECYCLE_AFTER_CONTEXTS ?? "8")
+// Caps Firefox content processes per browser. Default `2` keeps thread/RAM footprint
+// minimal while still allowing CF/Imperva challenges to resolve. Raise if specific
+// targets fail with empty content (rare).
+const CONTENT_PROCESSES = Number(process.env.BROWSER_CONTENT_PROCESSES ?? "2")
 
 // PROXY_URL / RESIDENTIAL_PROXY_URL accept a comma-separated list of proxy URLs (a single
 // URL still works — it's just a 1-element list). *_LIST_FILE is an alternative source
@@ -55,6 +59,7 @@ async function initPool() {
     poolSize: POOL_SIZE,
     acquireTimeoutMs: ACQUIRE_TIMEOUT_MS,
     recycleAfterTemporaryContexts: RECYCLE_AFTER_TEMPORARY_CONTEXTS,
+    contentProcesses: CONTENT_PROCESSES,
   })
   await pool.init()
   pool.startHealthCheck()