Copilot review fixes

Author: evgeny-stakewise

poetry.lock

@@ -20,7 +20,7 @@ psycopg2 = "==2.9.9"
 pyyaml = "==6.0.1"
 python-json-logger = "==2.0.7"
 psutil = "==7.0.0"
-aioitertools = "0.13.0"
+aioitertools = "==0.13.0"
 
 [tool.poetry.group.dev.dependencies]
 pylint = "==3.3.3"

pyproject.toml

@@ -122,6 +122,9 @@ async def assign_shares_to_redeem(
     - Each position's shares_to_redeem is set to min(unprocessed_shares, remaining_budget).
     - Iteration stops as soon as the cumulative shares_to_redeem reaches total_redemption_shares.
     """
+    if total_redemption_shares <= 0:
+        return []
+
     redeemable: list[OsTokenPosition] = []
     remaining_shares = total_redemption_shares
 

src/redemptions/tasks.py

@@ -70,7 +70,7 @@ class OsTokenPosition:
 
     @property
     def unprocessed_shares(self) -> Wei:
-        return Wei(self.leaf_shares - self.processed_shares)
+        return Wei(max(0, self.leaf_shares - self.processed_shares))
 
     def as_dict(self) -> dict:
         return {