feat(runtime): add tiny trigger timing conventions

Add boring runtime-level trigger timing primitives for delay, revealed, and interval while keeping them as attribute conventions rather than core effects or plugin surfaces. Promote lazy-load, infinite-scroll, progress-bar, value-select, and reset-user-input in examples/html_examples to runnable hemx patterns with exact htmx slugs and generated resources.

req: convention/001

req: convention/003

req: convention/005

req: htmx_equivalents/001

req: htmx_equivalents/002

req: examples/001

hemx-js/tests/runtime.rs

@@ -101,19 +101,32 @@ fn runtime_interval_dispatch_avoids_duplicate_timers() {
     let source = hemx_js::RUNTIME_JS;
 
     assert!(source.contains("const everyTimers = new WeakMap()"));
-    assert!(source.contains("forEachElement(root, (el) =>"));
-    assert!(source.contains("!el.hasAttribute(\"data-hemx-every\") || everyTimers.has(el)"));
-    assert!(
-        source.contains("if (!el.hasAttribute(\"data-hemx-every\") || everyTimers.has(el)) return")
-    );
+    assert!(source.contains("data-hemx-interval"));
     assert!(source.contains(
-        "setInterval(() => document.contains(el) ? send(el, \"every\") : stopPolling(el), ms)"
+        "eventName = el.hasAttribute(\"data-hemx-interval\") ? \"interval\" : \"every\""
+    ));
+    assert!(source.contains(
+        "setInterval(() => document.contains(el) ? send(el, eventName) : stopPolling(el), ms)"
     ));
     assert!(source.contains("function stopPolling(el)"));
     assert!(source.contains("clearInterval(everyTimers.get(el))"));
     assert!(source.contains("everyTimers.delete(el)"));
 }
 
+#[test]
+fn runtime_supports_tiny_delay_and_revealed_scheduling() {
+    // req: convention/001 req: convention/003 req: convention/005
+    let source = hemx_js::RUNTIME_JS;
+
+    assert!(source.contains("data-hemx-delay"));
+    assert!(source.contains("setTimeout(() => send(el, eventName, source), delay)"));
+    assert!(source.contains("const revealObservers = new WeakMap()"));
+    assert!(source.contains("const revealed = new WeakSet()"));
+    assert!(source.contains("data-hemx-revealed"));
+    assert!(source.contains("typeof IntersectionObserver === \"undefined\""));
+    assert!(source.contains("schedule(entry.target, \"revealed\")"));
+}
+
 #[test]
 fn runtime_toggles_pending_conventions_around_requests() {
     // req: convention/007 req: convention/008