feat(showcase): complete the state_machine validation demonstration

examples/app-showcase/src/objects/account.object.ts

@@ -48,6 +48,8 @@ export const Account = ObjectSchema.create({
       label: 'Account Lifecycle',
       description: 'Accounts move prospect → active → churned, and can be reactivated.',
       field: 'status',
+      // Transitions are validated on update; insert sets the initial state.
+      events: ['update'] as const,
       message: 'Invalid account lifecycle transition.',
       transitions: {
         prospect: ['active', 'churned'],

examples/app-showcase/src/objects/project.object.ts

@@ -74,6 +74,9 @@ export const Project = ObjectSchema.create({
       label: 'Project Status Flow',
       description: 'Projects progress through valid status transitions.',
       field: 'status',
+      // State machines validate *transitions*, so they run on update only —
+      // an insert sets the initial state (constrained by the select options).
+      events: ['update'] as const,
       message: 'Invalid project status transition.',
       transitions: {
         planned: ['active', 'cancelled'],
@@ -83,5 +86,24 @@ export const Project = ObjectSchema.create({
         cancelled: ['planned'],
       },
     },
+    {
+      // Advisory (severity: 'warning') state machine — demonstrates a soft
+      // transition guard: health should escalate/de-escalate one step at a
+      // time (green↔yellow↔red). A jump (e.g. green→red) is *flagged* (logged
+      // server-side) but NOT blocked, unlike the error-severity status flow.
+      type: 'state_machine' as const,
+      name: 'project_health_progression',
+      label: 'Project Health Progression (advisory)',
+      description: 'Health should change one step at a time; skips are warned, not blocked.',
+      field: 'health',
+      events: ['update'] as const,
+      severity: 'warning' as const,
+      message: 'Health changed by more than one step — confirm this is intentional.',
+      transitions: {
+        green: ['yellow'],
+        yellow: ['green', 'red'],
+        red: ['yellow'],
+      },
+    },
   ],
 });

examples/app-showcase/src/objects/task.object.ts

@@ -66,6 +66,8 @@ export const Task = ObjectSchema.create({
       label: 'Task Status Flow',
       description: 'Tasks move forward through the board (reopen allowed from Done).',
       field: 'status',
+      // Transitions are validated on update; insert sets the initial state.
+      events: ['update'] as const,
       message: 'Invalid task status transition.',
       transitions: {
         backlog: ['todo'],