fix(web): remove mantine-border-animate, use green highlight border (#1536)

* fix(web): remove mantine-border-animate, use green highlight border (#1535)

The @gfazioli/mantine-border-animate dependency emitted a persistent
React "forwardRef render functions accept exactly two parameters"
warning on every page load. Remove the dependency entirely and replace
the freshly-added card's animated border with a green border.

- Drop @gfazioli/mantine-border-animate from clients/web (package + lock)
  and remove its styles.css import from main.tsx.
- Add a `highlighted` variant to the Card theme that draws a 2px green
  border, driven by a new --inspector-highlight-border token in App.css.
- ServerCard now selects the variant (disabled > highlighted) instead of
  wrapping in BorderAnimate; the BorderAnimate flex-wrapper `w="100%"`
  workaround is no longer needed.
- Update ServerCard/ServerListScreen tests to assert the highlighted
  variant instead of the removed BorderAnimate DOM.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* refactor(web): drop redundant Card props on ServerCard (#1535)

ThemeCard.defaultProps already sets withBorder and padding="lg", so the
explicit props on ServerCard's <Card> were redundant. Addresses review
feedback on PR #1536.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* docs(web): note highlighted Card variant relies on inherited withBorder (#1535)

Addresses a maintainability flag from the PR #1536 re-review: the
highlighted variant only sets borderColor/borderWidth and depends on the
withBorder:true default, so make that coupling explicit in a comment.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

clients/web/src/theme/Card.ts

@@ -37,6 +37,19 @@ export const ThemeCard = Card.extend({
         },
       };
     }
+    if (props.variant === "highlighted") {
+      // Freshly-added / called-out server card: a prominent green border draws
+      // the eye until the highlight is dismissed (#1535). Only the color/width
+      // are set here — the border itself comes from the inherited
+      // `withBorder: true` default above, so keep that default if changing it.
+      return {
+        root: {
+          backgroundColor: "var(--inspector-surface-card)",
+          borderColor: "var(--inspector-highlight-border)",
+          borderWidth: 2,
+        },
+      };
+    }
     if (props.variant === "preview") {
       // Container for the resource preview / template form panels: sizes to
       // content (no forced height) but caps at the screen's available area