fix: update ZodError.errors to .issues for Zod v4 compat

Zod v4 renamed ZodError.errors to ZodError.issues.
Update all 3 error handlers and regenerate bun.lock.

Author: nigel-dev

bun.lock

@@ -60,7 +60,7 @@ export async function loadConfig(): Promise<MCConfig> {
     return result;
   } catch (error) {
     if (error instanceof z.ZodError) {
-      throw new Error(`Invalid config in ${filePath}: ${error.errors.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`);
+      throw new Error(`Invalid config in ${filePath}: ${error.issues.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`);
     }
     throw new Error(`Failed to load config from ${filePath}: ${error}`);
   }

src/lib/config.ts

@@ -76,7 +76,7 @@ export async function loadJobState(): Promise<JobState> {
     return JobStateSchema.parse(parsed);
   } catch (error) {
     if (error instanceof z.ZodError) {
-      throw new Error(`Invalid job state in ${filePath}: ${error.errors.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`);
+      throw new Error(`Invalid job state in ${filePath}: ${error.issues.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`);
     }
     throw new Error(`Failed to load job state from ${filePath}: ${error}`);
   }

src/lib/job-state.ts

@@ -33,7 +33,7 @@ export async function loadPlan(): Promise<PlanSpec | null> {
     return PlanSpecSchema.parse(parsed);
   } catch (error) {
     if (error instanceof z.ZodError) {
-      throw new Error(`Invalid plan state in ${filePath}: ${error.errors.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`);
+      throw new Error(`Invalid plan state in ${filePath}: ${error.issues.map(e => `${e.path.join('.')}: ${e.message}`).join(', ')}`);
     }
     throw new Error(`Failed to load plan state from ${filePath}: ${error}`);
   }