feat(tui): wire simulation control server

packages/opencode/specs/simulation-phases.md

@@ -12,14 +12,14 @@ This phase proves the core shape without swapping every foundational layer yet.
 
 Implementation checklist:
 
-- [ ] Add `OPENCODE_SIMULATION=1` activation in V1/full-TUI startup.
+- [x] Add `OPENCODE_SIMULATION=1` activation in V1/full-TUI startup.
 - [x] Add simulation trace service with in-memory append-only records.
 - [x] Add OpenTUI UI state extraction for screen, focus, elements, and generated actions.
 - [x] Add OpenTUI UI action execution for typing, keys, enter, arrows, focus, and click.
 - [x] Add reusable JSON-RPC WebSocket server on `127.0.0.1:40900+`.
 - [x] Expose `ui.state`, `ui.action`, `ui.render`.
 - [x] Expose `trace.list`, `trace.clear`, `trace.export`.
-- [ ] Wire fake and visible V1/full-TUI renderer paths through the same action protocol.
+- [x] Wire visible V1/full-TUI renderer path through the same action protocol.
 - [ ] Verify a local driver can inspect state and execute a real TUI input.
 
 Scope:

packages/tui/src/app.tsx

@@ -230,6 +230,17 @@ export const run = Effect.fn("Tui.run")(function* (input: TuiInput) {
       renderer.once("destroy", () => Deferred.doneUnsafe(shutdown, Effect.void))
       const pluginRuntime = createPluginRuntime()
 
+      const simulation = yield* Effect.promise(async () => {
+        if (process.env.OPENCODE_SIMULATION !== "1" && process.env.OPENCODE_SIMULATION !== "true") return
+        const { SimulationActions } = await import("./simulation/actions")
+        const { SimulationServer } = await import("./simulation/server")
+        return SimulationServer.start(SimulationActions.createHarness(renderer))
+      })
+      if (simulation) {
+        process.stderr.write(`opencode simulation websocket: ${simulation.url}\n`)
+        yield* Effect.addFinalizer(() => Effect.sync(() => simulation.stop()))
+      }
+
       yield* Effect.tryPromise(async () => {
         // Prewarm palette before ThemeProvider mounts so `system` theme avoids a first-paint fallback flash.
         void renderer.getPalette({ size: 16 }).catch(() => undefined)