chore(release): v0.8.3 version bump + changelog (#46)

* chore(release): bump 0.8.2 -> 0.8.3

Version bumped across desktop/package.json, Cargo.toml (+ only the `gridline`
entry in Cargo.lock — the sqlx family is untouched), tauri.conf.json, both
landing-page `const version` strings, the README's two download tables and
'current release' banners, the MAINTENANCE comment, and the version tests.

Adds the 0.8.3 changelog entry and README release note covering the external
client-tool resolution fix (issue #44), the MariaDB client-option fix, the four
restyled tool pages, and the app-icon revert.

Historical references (older changelog entries, '(v0.8.2)' feature notes) are
deliberately left alone.

* test(ui): scope CopyButton's unhandled-rejection capture to its own error

The listener is process-global and Vitest runs several test files per worker, so
an unrelated file's rejection could be recorded and fail this test. Filter the
capture to the error this test creates, and stop the listener in a finally so a
failing assertion cannot leak it into later tests.

Verified non-vacuous: against a CopyButton without the try/catch both 'stays
quiet' tests still fail with the expected assertion.

www/public/landing.js

@@ -60,7 +60,7 @@
     const keepLabel = downloadBtn.hasAttribute("data-download-label");
 
     const releasesUrl = "https://github.com/AdrianBonpin/gridline/releases";
-    const version = "0.8.2";
+    const version = "0.8.3";
 
     if (isMobile) {
       downloadBtn.href = releasesUrl;

www/src/data/changelog.ts

@@ -5,6 +5,16 @@ export interface ChangelogEntry {
 }
 
 export const changelogEntries: ChangelogEntry[] = [
+  {
+    version: "0.8.3",
+    date: "2026-09-30",
+    highlights: [
+      "External tools are found again, and this is the fix for issue #44 — Gridline reported “mysqldump not found” even with the tools installed, for three independent reasons. The bundled binaries were looked up one directory too high (`<resource_dir>/mysql_tools` instead of the `<resource_dir>/resources/mysql_tools` Tauri actually bundles), which silently disabled the bundled fallback for PostgreSQL as well as MySQL; a macOS GUI app inherits launchd's minimal `PATH` rather than your shell's, so Homebrew's `/opt/homebrew/bin` was invisible; and only `mariadb-dump`/`mariadb` were ever probed, never `mysqldump`/`mysql` — which is what `brew install mysql-client` actually installs. Both engines now resolve through one ordered chain: trusted absolute directories (Homebrew, MacPorts, Postgres.app, `/usr/local`), then your inherited `PATH`, then the bundled copy, where a candidate counts only if it is a real file that runs `--version`. Results are cached, and an explicit **Check again** re-detects.",
+      "The bundled MySQL client works too. The dump step was passing MySQL-only options to the bundled MariaDB binary (`--databases=<db>`, `--skip-column-statistics`, `--ssl-mode=…`), so the job aborted at option parsing before it ever connected. Options are now tailored per client — MariaDB clients get `--ssl` and a positional `--databases` — so backup and DB sync succeed with either client.",
+      "Backup, Restore, DB Sync and Schema Diff now tell you which tool they are using and where it came from (`Using system mysqldump`, `Using bundled mariadb-dump`), say so explicitly when a bundled copy is present but cannot run, and let you copy the install command in one click. A dump client whose major version is older than the server's produces a **non-blocking** warning at job start instead of silence. Those four pages also moved onto the same form layout the Objects view uses.",
+      "The app icon is back to its previous rendering — at the maintainer's request the macOS “legacy plate” strip added in #40 was reverted, so the Dock and launcher icon can show a light border again below roughly 72px.",
+    ],
+  },
   {
     version: "0.8.2",
     date: "2026-09-29",

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 = "0.8.2";
+const version = "0.8.3";
 const site = "https://getgridline.app";
 const jsonLd = [
   buildSoftwareApplicationJsonLd({