Fix 502: remove inline island calls from Examples section

Calling defisland components during SSR evaluates their bodies, which
reference client-only primitives (resource, def-store, etc.) that don't
exist in the OCaml SSR environment. Show only highlighted source code
instead — the islands still render via client hydration.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

sx/sx/reactive-islands/index.sx

@@ -236,13 +236,11 @@
     (~docs/section
       :title "Examples"
       :id "examples"
-      (p
+      (p "Source for every demo island on this page.")
-        "Each example below shows a live island and its source. Every island hydrates from server-rendered HTML — the reactive behaviour activates on the client.")
       (~docs/section
         :title "Counter"
         :id "demo-counter"
-        (p "Signals, computed, and " (code "swap!") " in a minimal example.")
+        (p "Signals, computed, and " (code "swap!") ".")
-        (~reactive-islands/index/demo-counter :initial 0)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-counter")
@@ -254,7 +252,6 @@
           "Two signals, each derived from the other via "
           (code "effect")
           ".")
-        (~reactive-islands/index/demo-temperature)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-temperature")
@@ -263,7 +260,6 @@
         :title "Imperative Handlers"
         :id "demo-imperative"
         (p "Multi-statement " (code "(do ...)") " bodies in event handlers.")
-        (~reactive-islands/index/demo-imperative)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-imperative")
@@ -276,7 +272,6 @@
           " and "
           (code "clear-interval")
           " with signal-driven UI.")
-        (~reactive-islands/index/demo-stopwatch)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-stopwatch")
@@ -284,8 +279,7 @@
       (~docs/section
         :title "Reactive List"
         :id "demo-reactive-list"
-        (p "Dynamic list with keyed reconciliation — add and remove items.")
+        (p "Dynamic list with keyed reconciliation.")
-        (~reactive-islands/index/demo-reactive-list)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-reactive-list")
@@ -294,7 +288,6 @@
         :title "Input Binding"
         :id "demo-input-binding"
         (p "Two-way binding via " (code ":bind") " attribute.")
-        (~reactive-islands/index/demo-input-binding)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-input-binding")
@@ -306,7 +299,6 @@
           "Reactive class toggling with "
           (code "deref")
           " in attribute expressions.")
-        (~reactive-islands/index/demo-dynamic-class)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-dynamic-class")
@@ -315,7 +307,6 @@
         :title "Portal"
         :id "demo-portal"
         (p "Render content outside the island's DOM subtree.")
-        (~reactive-islands/index/demo-portal)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-portal")
@@ -324,7 +315,6 @@
         :title "Error Boundary"
         :id "demo-error-boundary"
         (p "Catch rendering errors without crashing the page.")
-        (~reactive-islands/index/demo-error-boundary)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-error-boundary")
@@ -333,7 +323,6 @@
         :title "DOM Refs"
         :id "demo-refs"
         (p "Access raw DOM elements via " (code ":ref") " signal.")
-        (~reactive-islands/index/demo-refs)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-refs")
@@ -345,7 +334,6 @@
           "Async data fetching with "
           (code "promise-then")
           " and loading state.")
-        (~reactive-islands/index/demo-resource)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-resource")
@@ -359,7 +347,6 @@
           " and "
           (code "batch")
           ".")
-        (~reactive-islands/index/demo-transition)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-transition")
@@ -372,13 +359,11 @@
           (code "def-store")
           " / "
           (code "use-store")
-          ". Change the colour in the writer — the reader updates.")
+          ".")
-        (~reactive-islands/index/demo-store-writer)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-store-writer")
             "lisp"))
-        (~reactive-islands/index/demo-store-reader)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-store-reader")
@@ -390,7 +375,6 @@
           "Server-rendered content communicating with an island via "
           (code "bridge-event")
           ".")
-        (~reactive-islands/index/demo-event-bridge)
         (~docs/code
           :src (highlight
             (component-source "~reactive-islands/index/demo-event-bridge")