feat: add OmO config with build agent hiding and startup toast

- Add configurable build agent hiding (omo_agent.disable_build)
- Add startup-toast hook to show version on OpenCode startup
- Fix auto-update-checker to respect version pinning

🤖 GENERATED WITH ASSISTANCE OF [OhMyOpenCode](https://github.com/code-yeongyu/oh-my-opencode)

src/config/index.ts

@@ -5,6 +5,7 @@ export {
   McpNameSchema,
   AgentNameSchema,
   HookNameSchema,
+  OmoAgentConfigSchema,
 } from "./schema"
 
 export type {
@@ -14,4 +15,5 @@ export type {
   McpName,
   AgentName,
   HookName,
+  OmoAgentConfig,
 } from "./schema"

src/config/schema.ts

@@ -53,6 +53,7 @@ export const HookNameSchema = z.enum([
   "rules-injector",
   "background-notification",
   "auto-update-checker",
+  "startup-toast",
   "keyword-detector",
   "agent-usage-reminder",
 ])
@@ -93,6 +94,10 @@ export const ClaudeCodeConfigSchema = z.object({
   hooks: z.boolean().optional(),
 })
 
+export const OmoAgentConfigSchema = z.object({
+  disable_build: z.boolean().optional(),
+})
+
 export const OhMyOpenCodeConfigSchema = z.object({
   $schema: z.string().optional(),
   disabled_mcps: z.array(McpNameSchema).optional(),
@@ -101,6 +106,7 @@ export const OhMyOpenCodeConfigSchema = z.object({
   agents: AgentOverridesSchema.optional(),
   claude_code: ClaudeCodeConfigSchema.optional(),
   google_auth: z.boolean().optional(),
+  omo_agent: OmoAgentConfigSchema.optional(),
 })
 
 export type OhMyOpenCodeConfig = z.infer<typeof OhMyOpenCodeConfigSchema>
@@ -108,5 +114,6 @@ export type AgentOverrideConfig = z.infer<typeof AgentOverrideConfigSchema>
 export type AgentOverrides = z.infer<typeof AgentOverridesSchema>
 export type AgentName = z.infer<typeof AgentNameSchema>
 export type HookName = z.infer<typeof HookNameSchema>
+export type OmoAgentConfig = z.infer<typeof OmoAgentConfigSchema>
 
 export { McpNameSchema, type McpName } from "../mcp/types"