fix: enforce plugin config schemas (#1272) (thanks @thewilloftheshadow)

Co-authored-by: thewilloftheshadow <thewilloftheshadow@users.noreply.github.com>

src/config/types.clawdbot.ts

@@ -105,5 +105,6 @@ export type ConfigFileSnapshot = {
   config: ClawdbotConfig;
   hash?: string;
   issues: ConfigValidationIssue[];
+  warnings: ConfigValidationIssue[];
   legacyIssues: LegacyConfigIssue[];
 };