fix: correct API issues found by second codex review across 14 CLIs

Fixes from thorough codex review (o3 high reasoning, 5 parallel batches):

Validation fixes:
- customer-io: add ID validation for customer/campaign commands, event name check
- dub: fix links get to use /links/info endpoint, add --id validation
- google-search-console: fix countries to use ['country'] only, add --url validation
- mention-me: add --customer-id validation on referral/share/reward commands
- tolt: add --id validation for affiliates get/update

Auth & API fixes:
- apollo: move API key from header to JSON body, fix search endpoint path
- rewardful: change from Bearer to Basic auth
- hotjar: split OAuth URL (unversioned) from resource URL (v2)
- amplitude: wrap retention e param in JSON array
- snov: change list prospects from GET to POST with JSON body
- optimizely: change archive from DELETE to PATCH status=archived
- google-ads: fix budget body field from camelCase to snake_case
- resend: change webhook field from endpoint to url, add validation
- linkedin-ads: add required campaignGroup URN, fix numeric amount types

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tools/clis/resend.js

@@ -202,8 +202,9 @@ async function main() {
           result = await api('GET', `/webhooks/${rest[0]}`)
           break
         case 'create': {
+          if (!args.url) { result = { error: '--url required (webhook URL)' }; break }
           const events = args.events?.split(',') || ['email.sent', 'email.delivered', 'email.bounced']
-          result = await api('POST', '/webhooks', { endpoint: args.endpoint, events })
+          result = await api('POST', '/webhooks', { url: args.url, events })
           break
         }
         case 'delete':