RW25 speaker updates (#534)

* RW25 speaker updates

* Add marco-roth.md

* Update and rename joe-masilotti.md to marco-roth.md

* Update and rename xavier-noria.md to joe-masilotti.md

* Delete _world_speakers/2025/speakers/xavier-noria.md

* Update kinsey-durham.md

* Update joe-masilotti.md

Author: AmandaPerino

_world_sessions/2025/day-1/joe-masilotti.md

@@ -0,0 +1,14 @@
+---
+layout: world/2025/session
+title: "Day 1 Closing Keynote: Hotwire Native - A Rails Developer’s Secret Tool for Building Mobile Apps"
+speaker: joe-masilotti.md
+time: 16:30 - 17:30
+location: Effectenbeurs
+running_order: 13
+---
+
+Hotwire Native lowers the barrier to launching native apps on the App Store and Google Play. Rails developers can now ship to iOS and Android without rewriting their entire stack.
+
+By reusing your existing HTML and CSS, you can keep your business logic on the server and stay productive in Rails - without needing to become a mobile expert.
+
+Learn how small teams are shipping faster, solo developers are doing the impossible, and Rails is once again leading the way.

_world_sessions/2025/day-1/kinsey-durham.md

@@ -7,4 +7,4 @@ location: Effectenbeurs
 running_order: 7
 ---
 
-Prompting an LLM is easy. Building a Rails app that reliably integrates one? That’s a different story. This talk goes beyond prompt hacking to explore what it takes to bring LLM-powered features into real-world Rails apps—with real users, latency constraints, and production consequences. We’ll cover architectural patterns like model orchestration, prompt versioning, and skill/tool design, all tailored to the Rails ecosystem. You’ll learn how to connect your LLM to internal APIs, business logic, and background jobs, while keeping everything observable, testable, and maintainable. Whether you're adding a smart assistant or orchestrating agents, you’ll leave with practical Rails-specific strategies and patterns to build it right.
+Prompting is a start, but agents are the future. In this talk, we’ll explore how intelligent agents are changing how we build software — and how we can bring them to life in the Rails ecosystem. From early CLI bots to multi-tool agents powered by LLMs, we’ll trace the evolution, show what’s working in production, and give you practical patterns for building agents with a Rails mindset.

_world_sessions/2025/day-1/xavier-noria.md

@@ -1,6 +1,6 @@
 ---
 layout: world/2025/session
-title: "AI Agents at Scale"
+title: "LLM Evaluations & Reinforcement Learning for Shopify Sidekick on Rails"
 multiple_speakers: "Andrew Mcnamara & Charlie Lee"
 speaker: andrew-mcnamara.md
 second_speaker: charlie-lee.md
@@ -9,10 +9,4 @@ location: Effectenbeurs
 running_order: 11
 ---
 
-Discover how to build flexible, scalable AI agents in Rails through modular components
-that adapt to the evolving AI landscape. Learn practical patterns for abstracting model
-providers, implementing flow-based architectures, building flexible tools, and managing
-prompts. We'll explore how to handle divergent LLM provider features, plus key AI
-learnings: evaluation strategies for large applications, deciding between agents vs tools
-(A2A/MCP), and choosing between fine-tuning vs prompt engineering. Perfect for
-developers integrating AI or scaling existing implementations.
+This talk explores building production LLM systems through Shopify Sidekick's Rails architecture, covering orchestration patterns and tool integration strategies. We'll establish statistically rigorous LLM-based evaluation frameworks that move beyond subjective "vibe testing." Finally, we'll demonstrate how robust evaluation systems become critical infrastructure for reinforcement learning pipelines, while exploring how RL can learn to hack evaluations and strategies to mitigate this.

_world_sessions/2025/day-2/andrew-mcnamara.md

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+---
+layout: world/2025/session
+title: "Introducing ReActionView: An ActionView-Compatible ERB Engine"
+speaker: marco-roth.md
+time: 14:45 - 15:15
+location: Effectenbeurs
+running_order: 9
+---
+
+This talk is the conclusion of a journey I’ve been sharing throughout 2025. At RubyKaigi, I introduced Herb: a new HTML-aware ERB parser and tooling ecosystem. At RailsConf, I released developer tools built on Herb, including a formatter, linter, and language server, alongside a vision for modernizing and improving the Rails view layer. 
+
+At Rails World, I’ll debut ReActionView: a new ERB engine built on Herb, fully compatible with `.html.erb` but with HTML validation, better error feedback, reactive updates, and built-in tooling. 
+
+This will be the first public release, exclusive to Rails World, tying together everything from the past talks and even bringing exclusive updates to tools I first showed at Rails World 2023.

_world_sessions/2025/day-2/joe-masilotti.md

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+---
+layout: world/2025/speaker
+redirect_from: /world/speakers/marco-roth
+first_name: Marco
+last_name: Roth
+image_path: /assets/world/2023/images/speakers/m-roth.jpeg
+role: Independent Consultant & Open Source Contributor
+company: Toolsday GmbH
+keynote:
+github: https://github.com/marcoroth
+linkedin: https://www.linkedin.com/in/marco-roth/
+twitter: https://twitter.com/marcoroth_
+---
+
+Marco is a passionate full-stack Ruby on Rails developer and a dedicated open-source contributor. As a member of the Hotwire and StimulusReflex contributors teams he has been pushing the limits of real-time server-rendered applications using the HTML-over-the-wire (Hotwire) approach. He has actively open-sourced, maintained, and contributed to several key libraries within the Hotwire and Ruby on Rails ecosystem.