fix: Agent tolerates ~3 minutes of network outage mid-job (10 attempts with backoff); 1.2.4

Sandbox test: a 26 s outage exhausted the previous 15 s retry budget and failed a REPROCESS_ALL.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

agent/src/gti_fiscal_agent/client.py

@@ -3,7 +3,7 @@ import time
 import httpx
 
 TRANSIENT_STATUS = (502, 503, 504)   # reverse proxy / Hub restarting
-BACKOFF_SECONDS = (1, 2, 4, 8)       # 5 attempts in total
+BACKOFF_SECONDS = (2, 5, 10, 20, 30, 30, 30, 30, 30)   # 10 attempts, ~3 minutes of outage tolerated mid-job
 
 
 def _resilient(send):

agent/src/gti_fiscal_agent/preflight.py

@@ -9,7 +9,7 @@ import os
 import sqlite3
 from pathlib import Path
 
-AGENT_VERSION_DEFAULT = "1.2.3"
+AGENT_VERSION_DEFAULT = "1.2.4"
 REQUIRED_ENV = ("GTI_HUB_URL", "AGENT_TOKEN", "FIREBIRD_DATABASE_PATH", "FB_USER", "FB_PASSWORD")
 REQUIRED_CAPABILITIES = ("supports_ncm", "supports_ipi", "supports_cest")
 FISCAL_MODES = ("DRY_RUN", "AUTO_APPLY")