fix(coding-agent): fixed credential blocking logic to check remaining available credentials

- Fixed credential blocking logic to correctly check for remaining available credentials instead of always returning true.

docs/porting-from-pi-mono.md

@@ -5,12 +5,12 @@ Use it for any merge: single file, feature branch, or full release sync.
 
 ## Last Sync Point
 
-**Commit:** `11dd2f47`
+**Commit:** `f1b64b9d`
 **Date:** January 2026
 
 When starting a new sync, generate patches from this commit forward:
 ```bash
-git format-patch 11dd2f47..HEAD --stdout > changes.patch
+git format-patch f1b64b9d..HEAD --stdout > changes.patch
 ```
 
 ## 0) Define the scope

packages/coding-agent/CHANGELOG.md

@@ -1,6 +1,9 @@
 # Changelog
 
 ## [Unreleased]
+### Fixed
+
+- Fixed credential blocking logic to correctly check for remaining available credentials instead of always returning true
 
 ## [4.0.1] - 2026-01-10
 ### Added

packages/coding-agent/src/core/auth-storage.ts

@@ -797,7 +797,15 @@ export class AuthStorage {
 		}
 
 		this.markCredentialBlocked(providerKey, sessionCredential.index, blockedUntil);
-		return true;
+
+		const remainingCredentials = this.getCredentialsForProvider(provider)
+			.map((credential, index) => ({ credential, index }))
+			.filter(
+				(entry): entry is { credential: AuthCredential; index: number } =>
+					entry.credential.type === sessionCredential.type && entry.index !== sessionCredential.index,
+			);
+
+		return remainingCredentials.some((candidate) => !this.isCredentialBlocked(providerKey, candidate.index));
 	}
 
 	/**