feat: implement OpenClaw integration

Ports the OMX OpenClaw module into oh-my-openagent as a first-class integration.
This integration allows forwarding internal events (session lifecycle, tool execution) to external gateways (HTTP or command-based).

- Added `src/openclaw` directory with implementation:
  - `dispatcher.ts`: Handles HTTP/Command dispatching with interpolation
  - `types.ts`: TypeScript definitions
  - `client.ts`: Main entry point `wakeOpenClaw`
  - `index.ts`: Public API
- Added `src/config/schema/openclaw.ts` for Zod schema validation
- Updated `src/config/schema/oh-my-opencode-config.ts` to include `openclaw` config
- Added `src/hooks/openclaw-sender/index.ts` to listen for events
- Registered the hook in `src/plugin/hooks/create-session-hooks.ts`
- Added unit tests in `src/openclaw/__tests__`

Events handled:
- `session-start` (via `session.created`)
- `session-end` (via `session.deleted`)
- `session-idle` (via `session.idle`)
- `ask-user-question` (via `tool.execute.before` for `ask_user_question`)
- `stop` (via `tool.execute.before` for `stop-continuation` command)

src/config/schema/oh-my-opencode-config.ts

@@ -12,6 +12,7 @@ import { BuiltinCommandNameSchema } from "./commands"
 import { ExperimentalConfigSchema } from "./experimental"
 import { GitMasterConfigSchema } from "./git-master"
 import { NotificationConfigSchema } from "./notification"
+import { OpenClawConfigSchema } from "./openclaw"
 import { RalphLoopConfigSchema } from "./ralph-loop"
 import { RuntimeFallbackConfigSchema } from "./runtime-fallback"
 import { SkillsConfigSchema } from "./skills"
@@ -55,6 +56,7 @@ export const OhMyOpenCodeConfigSchema = z.object({
   runtime_fallback: z.union([z.boolean(), RuntimeFallbackConfigSchema]).optional(),
   background_task: BackgroundTaskConfigSchema.optional(),
   notification: NotificationConfigSchema.optional(),
+  openclaw: OpenClawConfigSchema.optional(),
   babysitting: BabysittingConfigSchema.optional(),
   git_master: GitMasterConfigSchema.optional(),
   browser_automation_engine: BrowserAutomationConfigSchema.optional(),