feat: add shared dashboard API contracts

packages/api-contracts/src/session.ts

@@ -0,0 +1,34 @@
+import { z } from 'zod';
+
+export const RedditSessionStateSchema = z.union([
+  z.literal('unknown'),
+  z.literal('authenticated'),
+  z.literal('login-required'),
+  z.literal('unreachable'),
+]);
+export const LoginInfoResponseSchema = z.strictObject({
+  vncEnabled: z.boolean(),
+  novncPort: z.number(),
+  publicUrl: z.string().nullable(),
+  passwordRequired: z.boolean(),
+});
+export const LoginStatusResponseSchema = z.union([
+  z.strictObject({ ready: z.literal(false), error: z.string() }),
+  z.strictObject({
+    ready: z.literal(true),
+    loggedIn: z.boolean(),
+    status: RedditSessionStateSchema,
+  }),
+  z.strictObject({
+    ready: z.literal(true),
+    loggedIn: z.literal(false),
+    error: z.string(),
+  }),
+]);
+export const LoginStartResponseSchema = z.union([
+  z.strictObject({ ok: z.literal(true) }),
+  z.strictObject({ ok: z.literal(false), error: z.string() }),
+]);
+
+export type RedditSessionState = z.infer<typeof RedditSessionStateSchema>;
+export type LoginStatusResponse = z.infer<typeof LoginStatusResponseSchema>;