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/index.ts

@@ -36,12 +36,14 @@ export {
 export type {
   Company,
   Agent,
+  AgentPermissions,
   AgentKeyCreated,
   Project,
   Issue,
   IssueComment,
   Goal,
   Approval,
+  ApprovalComment,
   CostEvent,
   CostSummary,
   HeartbeatRun,
@@ -62,10 +64,13 @@ export {
   updateAgentSchema,
   createAgentKeySchema,
   wakeAgentSchema,
+  agentPermissionsSchema,
+  updateAgentPermissionsSchema,
   type CreateAgent,
   type UpdateAgent,
   type CreateAgentKey,
   type WakeAgent,
+  type UpdateAgentPermissions,
   createProjectSchema,
   updateProjectSchema,
   type CreateProject,
@@ -84,8 +89,14 @@ export {
   type UpdateGoal,
   createApprovalSchema,
   resolveApprovalSchema,
+  requestApprovalRevisionSchema,
+  resubmitApprovalSchema,
+  addApprovalCommentSchema,
   type CreateApproval,
   type ResolveApproval,
+  type RequestApprovalRevision,
+  type ResubmitApproval,
+  type AddApprovalComment,
   createCostEventSchema,
   updateBudgetSchema,
   type CreateCostEvent,