Moving up chapter "Události" + highlight heading

[mildabre]

Presenter events are important and should be used as standard even in simpler applications, typically in conjunction with trait usage. Therefore, I suggest:

• highlight the section title to the top level, so that this topic is permanently visible in the side menu
• move the section higher, roughly to a place corresponding to its meaning (before the request parameters)

[dg]

Thanks — I agree the Events section was in an odd spot. Rather than promoting it to a top-level heading and moving it before "Request Parameters", I moved it to the end of the Presenter Life Cycle chapter (164e96e59, both languages). That's where it belongs thematically: $onStartup/$onRender/$onShutdown hook directly into the startup()/beforeRender()/shutdown() methods documented right above it, so the reader meets the events immediately after the lifecycle methods they wrap. It's now grouped with them rather than sitting among the unrelated deep-dive topics. Closing since the branch can't be merged directly.