fix(polymarket-bot): fix corrupted secret and migrate to Gitea registry images

- Fix bot-secrets: replace corrupted REDACTED base64 values with correct ones
- Update deployment-api and deployment-bot to use git.chemavx.xyz registry images
- Add imagePullSecrets (gitea-registry) to api and bot deployments
- Add secret-gitea-registry.yaml manifest for ArgoCD to manage

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

polymarket-bot/deployment-bot.yaml

@@ -1,11 +1,6 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-  annotations:
-    deployment.kubernetes.io/revision: '1'
-    kubectl.kubernetes.io/last-applied-configuration: '{"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{},"name":"bot","namespace":"polymarket-bot"},"spec":{"replicas":1,"selector":{"matchLabels":{"app":"bot"}},"template":{"metadata":{"labels":{"app":"bot"}},"spec":{"containers":[{"command":["python3","-m","bot.main"],"envFrom":[{"secretRef":{"name":"bot-secrets"}}],"image":"docker.io/library/polymarket-bot:v5","imagePullPolicy":"Never","name":"bot","resources":{"limits":{"cpu":"500m","memory":"512Mi"},"requests":{"cpu":"100m","memory":"256Mi"}}}]}}}}
-
-      '
   name: bot
   namespace: polymarket-bot
 spec:
@@ -25,6 +20,8 @@ spec:
       labels:
         app: bot
     spec:
+      imagePullSecrets:
+      - name: gitea-registry
       containers:
       - command:
         - python3
@@ -50,4 +47,3 @@ spec:
       schedulerName: default-scheduler
       securityContext: {}
       terminationGracePeriodSeconds: 30
-