fix: replace deprecated datetime.utcnow() with datetime.now(datetime.UTC)

- Replace all 2,087 uses of datetime.utcnow() across 294 files
- Add UTC import to datetime statements where needed
- Addresses Python 3.12+ deprecation warning (report item #3)

scripts/testing/generate_staking_test_data.py

@@ -6,7 +6,7 @@ Generates realistic test data scenarios for staking tests
 
 import json
 import random
-from datetime import datetime, timedelta
+from datetime import datetime, UTC, timedelta
 from typing import Dict, List, Any
 
 # Performance tiers and their properties
@@ -94,7 +94,7 @@ def generate_agent_metrics(tier: str = "GOLD") -> Dict[str, Any]:
         "total_staked": 0.0,
         "staker_count": 0,
         "total_rewards_distributed": 0.0,
-        "last_update_time": datetime.utcnow().isoformat()
+        "last_update_time": datetime.now(datetime.UTC).isoformat()
     }
 
 
@@ -128,7 +128,7 @@ def generate_stake_data(
     lock_period_days = LOCK_PERIOD_MULTIPLIERS[lock_period_category]["days"]
     expected_apy = calculate_expected_apy(tier, lock_period_days)
     
-    start_time = datetime.utcnow()
+    start_time = datetime.now(datetime.UTC)
     end_time = start_time + timedelta(days=lock_period_days)
     
     return {
@@ -158,7 +158,7 @@ def generate_staking_pool(agent_wallet: str, total_staked: float) -> Dict[str, A
         "pool_apy": 5.0,
         "staker_count": 0,
         "active_stakers": [],
-        "last_distribution_time": datetime.utcnow().isoformat(),
+        "last_distribution_time": datetime.now(datetime.UTC).isoformat(),
         "distribution_frequency": 1
     }
 
@@ -167,7 +167,7 @@ def generate_test_scenario(num_agents: int = 5, num_stakes_per_agent: int = 3) -
     """Generate a complete test scenario with multiple agents and stakes"""
     scenario = {
         "scenario_id": f"scenario_{random.randint(1000, 9999)}",
-        "generated_at": datetime.utcnow().isoformat(),
+        "generated_at": datetime.now(datetime.UTC).isoformat(),
         "agents": [],
         "stakes": [],
         "pools": []
@@ -310,7 +310,7 @@ def generate_unbonding_scenarios() -> List[Dict[str, Any]]:
         generate_staker_address(),
         lock_period_category="medium"
     )
-    stake["end_time"] = (datetime.utcnow() - timedelta(days=1)).isoformat()
+    stake["end_time"] = (datetime.now(datetime.UTC) - timedelta(days=1)).isoformat()
     scenarios.append({
         "name": "Unbond After Lock Period",
         "description": "Test unbonding after lock period ends (should succeed)",
@@ -326,9 +326,9 @@ def generate_unbonding_scenarios() -> List[Dict[str, Any]]:
         generate_staker_address(),
         lock_period_category="medium"
     )
-    stake["end_time"] = (datetime.utcnow() - timedelta(days=1)).isoformat()
+    stake["end_time"] = (datetime.now(datetime.UTC) - timedelta(days=1)).isoformat()
     stake["status"] = "UNBONDING"
-    stake["unbonding_time"] = (datetime.utcnow() - timedelta(days=10)).isoformat()
+    stake["unbonding_time"] = (datetime.now(datetime.UTC) - timedelta(days=10)).isoformat()
     scenarios.append({
         "name": "Complete Unbonding With Penalty",
         "description": "Test completing unbonding within 30 days (10% penalty)",
@@ -344,9 +344,9 @@ def generate_unbonding_scenarios() -> List[Dict[str, Any]]:
         generate_staker_address(),
         lock_period_category="medium"
     )
-    stake["end_time"] = (datetime.utcnow() - timedelta(days=1)).isoformat()
+    stake["end_time"] = (datetime.now(datetime.UTC) - timedelta(days=1)).isoformat()
     stake["status"] = "UNBONDING"
-    stake["unbonding_time"] = (datetime.utcnow() - timedelta(days=35)).isoformat()
+    stake["unbonding_time"] = (datetime.now(datetime.UTC) - timedelta(days=35)).isoformat()
     scenarios.append({
         "name": "Complete Unbonding No Penalty",
         "description": "Test completing unbonding after 30 days (no penalty)",

scripts/testing/qa-cycle.py

@@ -10,7 +10,7 @@ import sys
 import shutil
 import time
 import random
-from datetime import datetime
+from datetime import datetime, UTC
 from pathlib import Path
 
 # Jitter: random delay up to 15 minutes (900 seconds)
@@ -33,7 +33,7 @@ API_BASE = os.getenv('GITEA_API_BASE', 'http://gitea.bubuit.net:3000/api/v1')
 REPO = 'oib/aitbc'
 
 def log(msg):
-    now = datetime.utcnow().isoformat() + 'Z'
+    now = datetime.now(datetime.UTC).isoformat() + 'Z'
     with open(LOG_FILE, 'a') as f:
         f.write(f"[{now}] {msg}\n")
     print(msg)
@@ -139,7 +139,7 @@ def synthesize_status():
             log(f"PR #{num} has failing checks: {', '.join(s.get('context','?') for s in failing)}")
 
 def main():
-    now = datetime.utcnow().isoformat() + 'Z'
+    now = datetime.now(datetime.UTC).isoformat() + 'Z'
     log(f"\n=== QA Cycle start: {now} ===")
     if not GITEA_TOKEN:
         log("GITEA_TOKEN not set; aborting.")