Add thymeleaf-htmx module: Spring Boot 4.1.2 + Thymeleaf 3.1.5 + htmx 2.0.11 CRUD UI with fragment rendering, 422 validation re-render, pagination, inline edit, delete, MockMvc tests and a Chromium check

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017ic4b7rnC7jppGGdHGESvy

thymeleaf-htmx/output/10-live-curl.txt

@@ -0,0 +1,35 @@
+$ curl -si http://localhost:18082/contacts | tr -d '\r' | grep -v -E '^(Date|Transfer-Encoding)' | head -10
+HTTP/1.1 200 
+Vary: HX-Request
+Vary: HX-History-Restore-Request
+Content-Type: text/html;charset=UTF-8
+Content-Language: en-US
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+
+$ curl -si -H 'HX-Request: true' http://localhost:18082/contacts | tr -d '\r' | grep -v -E '^(Date|Transfer-Encoding)' | head -8
+HTTP/1.1 200 
+Vary: HX-Request
+Vary: HX-History-Restore-Request
+Content-Type: text/html;charset=UTF-8
+Content-Language: en-US
+
+<div id="contact-table" hx-trigger="contactsChanged from:body" hx-target="this" hx-swap="outerHTML" hx-get="/contacts?page=0">
+    <table>
+
+$ curl -s -o /dev/null -w '%{http_code} %{content_type}\n' http://localhost:18082/webjars/htmx.org/dist/htmx.min.js
+200 text/javascript
+
+$ curl -si -X DELETE -H 'HX-Request: true' http://localhost:18082/contacts/23
+HTTP/1.1 200 
+Vary: HX-Request
+Vary: HX-History-Restore-Request
+HX-Trigger: contactsChanged
+Content-Length: 0
+
+
+$ curl -si -X DELETE -H 'HX-Request: true' http://localhost:18082/contacts/23   (again)
+HTTP/1.1 404