fix(weather): Remove obsolete mock launch flag usage

Remove the leftover mock weather launch argument from the Weather example
README and UI tests. The app now uses deterministic bundled data directly,
so tests and docs should not reintroduce the launch flag path.

Co-Authored-By: Codex <codex@openai.com>

Author: cameroncooke

example_projects/Weather/README.md

@@ -2,20 +2,14 @@
 
 Atmos Weather is a native SwiftUI weather app prototype for iOS.
 
-## Launch with mock weather data
+## Launch
 
-Build and run the app with XcodeBuildMCP first:
+Build and run the app with XcodeBuildMCP:
 
 ```bash
 ../../build/cli.js simulator build-and-run
 ```
 
-Then relaunch the installed app with the mock API argument:
-
-```bash
-../../build/cli.js simulator launch-app --json '{"bundleId":"com.sentry.weather.Weather","launchArgs":["--mock-weather-api"]}'
-```
-
 ## JSON fixtures
 
 Fixture JSON files live in:
@@ -96,4 +90,4 @@ Run the app test suite through XcodeBuildMCP:
 ../../build/cli.js simulator test
 ```
 
-UI tests inject `--mock-weather-api` themselves so they do not depend on the production API endpoint.
+The app uses bundled deterministic weather data so UI tests do not depend on the production API endpoint.

example_projects/Weather/WeatherUITests/WeatherUITests.swift

@@ -69,7 +69,6 @@ final class WeatherUITests: XCTestCase {
     @MainActor
     private func launchApp() -> XCUIApplication {
         let app = XCUIApplication()
-        app.launchArguments.append("--mock-weather-api")
         app.launch()
         return app
     }

example_projects/Weather/WeatherUITests/WeatherUITestsLaunchTests.swift

@@ -20,7 +20,6 @@ final class WeatherUITestsLaunchTests: XCTestCase {
     @MainActor
     func testLaunch() throws {
         let app = XCUIApplication()
-        app.launchArguments.append("--mock-weather-api")
         app.launch()
 
         // Insert steps here to perform after app launch but before taking a screenshot,