Bump version to 0.7.15 across app shell, README, landing page, and changelog

www/src/data/changelog.ts

@@ -5,6 +5,14 @@ export interface ChangelogEntry {
 }
 
 export const changelogEntries: ChangelogEntry[] = [
+  {
+    version: "0.7.15",
+    date: "2026-09-08",
+    highlights: [
+      "Landing page adds a support channel: coffee via Ko-fi (ko-fi.com/adrianbonpin), always optional, never gates a feature.",
+      "Landing page copy refreshed: em dashes dropped, OSS section simplified, FAQ added for how the project is funded.",
+    ],
+  },
   {
     version: "0.7.14",
     date: "2026-09-04",

www/src/pages/index.astro

@@ -15,7 +15,7 @@ import queryEditor from "../assets/screenshots/query-editor.png";
 import erDiagram from "../assets/screenshots/er-diagram.png";
 import home from "../assets/screenshots/home.png";
 import dataGrid from "../assets/screenshots/data-grid.png";
-const version = "0.7.14";
+const version = "0.7.15";
 const site = "https://getgridline.app";
 const jsonLd = [
   buildSoftwareApplicationJsonLd({