chore: rename editor components and analytics to follow element_* convention

- AE_Comp_Editor_CodeMirror.svelte → element_editor_codemirror.svelte
- AE_Comp_Editor_TipTap.svelte → element_editor_tiptap.svelte
- analytics.svelte → e_app_analytics.svelte (matches e_app_* prefix of siblings)
- Updated all import paths; import variable names unchanged

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/lib/app_components/e_app_analytics.svelte

@@ -0,0 +1,44 @@
+<script lang="ts" module>
+    declare global {
+        interface Window {
+            dataLayer: any[];
+            gtag: (...args: any[]) => void;
+        }
+    }
+</script>
+
+<script lang="ts">
+    import { browser } from '$app/environment';
+
+    interface Props {
+        log_lvl?: number;
+        site_google_tracking_id?: string;
+    }
+
+    let { log_lvl = 0, site_google_tracking_id = $bindable('') }: Props = $props();
+
+    $effect(() => {
+        if (browser && site_google_tracking_id) {
+            if (log_lvl) {
+                console.log(`AE Analytics: site_google_tracking_id = `, site_google_tracking_id);
+            }
+
+            window.dataLayer = window.dataLayer || [];
+            window.gtag = window.gtag || function gtag() {
+                window.dataLayer.push(arguments);
+            };
+            window.gtag('js', new Date());
+            window.gtag('config', site_google_tracking_id);
+            
+            if (log_lvl) {
+                console.log(`AE Analytics: Google Analytics Tracking ID = `, site_google_tracking_id);
+            }
+        }
+    });
+</script>
+
+<svelte:head>
+    {#if site_google_tracking_id}
+        <script async src="https://www.googletagmanager.com/gtag/js?id={site_google_tracking_id}"></script>
+    {/if}
+</svelte:head>