chore(release): v0.8.2 (#43)

Version bump 0.8.1 -> 0.8.2 across the app shell, the website and the README, plus v0.8.2 changelog entries for the native MySQL execution work merged in #42.

- desktop/package.json, desktop/src-tauri/Cargo.toml, desktop/src-tauri/tauri.conf.json, Cargo.lock (cargo-regenerated; gridline only - webview2-com-macros stays 0.8.1)
- www/public/landing.js + www/src/pages/index.astro const version; new top entry in www/src/data/changelog.ts
- version.test.ts, bundle-config.test.ts, docs-coverage.test.ts updated to 0.8.2
- README: both banners, both download tables (asset names + tags, incl. apt/dnf strings), MAINTENANCE comment, new v0.8.2 bullet

Verified: cargo build (gridline v0.8.2) + cargo test --lib 442 passed / 0 failed; bun run test 133 files / 1151 tests exit 0; tsc clean.

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 = "0.8.1";
+    const version = "0.8.2";
 
     if (isMobile) {
       downloadBtn.href = releasesUrl;

www/src/data/changelog.ts

@@ -5,6 +5,15 @@ export interface ChangelogEntry {
 }
 
 export const changelogEntries: ChangelogEntry[] = [
+  {
+    version: "0.8.2",
+    date: "2026-09-29",
+    highlights: [
+      "MySQL columns now show their values. Every non-string MySQL type was decoding to NULL, so `id`/integer columns looked empty in the grid and the query editor — and it was not only integers: `DECIMAL`, `BIT`, `YEAR`, `DATE`, `TIME`, `DATETIME`, `DATETIME(6)`, `TIMESTAMP`, `FLOAT` and `DOUBLE` were affected too (21 of 30 types). Decoding is now driven by each column's declared type instead of a guess, 64-bit integers and `DECIMAL` travel as strings so no digits are lost, and `DATETIME(6)` keeps its microseconds. Temporal values are shown as stored, never silently shifted into another time zone.",
+      "MySQL restore now works against MySQL 8. It used to shell out to a bundled MariaDB client, which cannot authenticate with MySQL 8's default `caching_sha2_password`, so restore failed with `ERROR 1045` (or `ERROR 2026` once TLS was involved) while browsing worked fine. Restore now runs in-process over the same driver that browsing uses: it stops at the first error and tells you which statement failed, it can be cancelled, and it understands the `DELIMITER` directive so dumps containing triggers and stored routines apply correctly. The **Clean** toggle is now real — it drops only the objects the dump recreates, so an unrelated table in the target survives — and because MySQL DDL commits as it runs, the form warns that a failed restore cannot be rolled back.",
+      "`.sql` files can be opened with Gridline straight from your file manager. Right-click a script → Open With → Gridline (it appears as an alternate handler, so your default for `.sql` is left alone) and it opens in a query tab named after the file. Opening never executes anything — Run still goes through the destructive-query confirmation — and re-opening the same file focuses the existing tab without discarding edits. If no connection is open, the script is held and Home prompts you to pick one, so a double-click never dead-ends.",
+    ],
+  },
   {
     version: "0.8.1",
     date: "2026-09-24",

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 = "0.8.1";
+const version = "0.8.2";
 const site = "https://getgridline.app";
 const jsonLd = [
   buildSoftwareApplicationJsonLd({