Scaffold agent permissions, approval comments, and hiring governance types

Add pending_approval agent status, permissions jsonb column, and AgentPermissions
type with canCreateAgents flag. Add approval_comments table and ApprovalComment
type. Extend approval statuses with revision_requested. Add validators for
permission updates, approval revision requests, resubmission, and approval
comments. Add requireBoardApprovalForNewAgents to company update schema.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/shared/src/validators/approval.ts

@@ -15,3 +15,22 @@ export const resolveApprovalSchema = z.object({
 });
 
 export type ResolveApproval = z.infer<typeof resolveApprovalSchema>;
+
+export const requestApprovalRevisionSchema = z.object({
+  decisionNote: z.string().optional().nullable(),
+  decidedByUserId: z.string().optional().default("board"),
+});
+
+export type RequestApprovalRevision = z.infer<typeof requestApprovalRevisionSchema>;
+
+export const resubmitApprovalSchema = z.object({
+  payload: z.record(z.unknown()).optional(),
+});
+
+export type ResubmitApproval = z.infer<typeof resubmitApprovalSchema>;
+
+export const addApprovalCommentSchema = z.object({
+  body: z.string().min(1),
+});
+
+export type AddApprovalComment = z.infer<typeof addApprovalCommentSchema>;