feat: add dedicated 402 budget limit error page

Replace generic error display for 402 responses with a dedicated
budget limit error page. Includes a 'Go to billing' CTA when an
organization is in context, and a 'Change organization' secondary
action on both console-level and project-level error pages.

Author: HarshMN2345

src/routes/(console)/+error.svelte

@@ -5,7 +5,12 @@
     import { Button } from '$lib/elements/forms';
     import { isVerifyEmailRedirectError } from '$lib/helpers/emailVerification';
     import { Container } from '$lib/layout';
-    import { Typography } from '@appwrite.io/pink-svelte';
+    import { Badge, Layout, Typography } from '@appwrite.io/pink-svelte';
+
+    const isPaymentError = $derived(page.status === 402);
+    const billingUrl = $derived(
+        page.params.organization ? `${base}/organization-${page.params.organization}/billing` : null
+    );
 
     $effect(() => {
         const verifyEmailPath = resolve('/verify-email');
@@ -15,15 +20,59 @@
     });
 </script>
 
-<Container>
-    <div>
-        <Typography.Title size="xl"
-            >{'status' in page.error
-                ? page.error.status || 'Invalid Argument'
-                : 'Invalid Argument'}</Typography.Title>
-        <Typography.Title>{page.error.message}</Typography.Title>
-    </div>
-    <div>
-        <Button href={base}>Back to the console</Button>
-    </div>
-</Container>
+{#if isPaymentError}
+    <section class="budget-error">
+        <div class="budget-error__content">
+            <Layout.Stack gap="s" alignItems="center">
+                <Badge type="error" variant="secondary" content="Budget limit reached" />
+                <Layout.Stack gap="xs" alignItems="center">
+                    <Typography.Title size="l" align="center">
+                        Your organization has reached its budget limit
+                    </Typography.Title>
+                    <Typography.Text align="center">
+                        Access to resources has been blocked. Update your billing settings to
+                        restore access.
+                    </Typography.Text>
+                </Layout.Stack>
+                <div class="u-margin-block-start-16">
+                    <Layout.Stack direction="row" gap="s" justifyContent="center">
+                        {#if billingUrl}
+                            <Button href={billingUrl}>Go to billing</Button>
+                        {/if}
+                        <Button secondary href="{base}/account/organizations"
+                            >Change organization</Button>
+                    </Layout.Stack>
+                </div>
+            </Layout.Stack>
+        </div>
+    </section>
+{:else}
+    <Container>
+        <div>
+            <Typography.Title size="xl"
+                >{'status' in page.error
+                    ? page.error.status || 'Invalid Argument'
+                    : 'Invalid Argument'}</Typography.Title>
+            <Typography.Title>{page.error.message}</Typography.Title>
+        </div>
+        <div>
+            <Button href={base}>Back to the console</Button>
+        </div>
+    </Container>
+{/if}
+
+<style>
+    .budget-error {
+        min-height: calc(100vh - 48px - 2rem);
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        padding: 4rem 1.5rem;
+        text-align: center;
+    }
+
+    .budget-error__content {
+        width: min(100%, 33rem);
+        max-width: 33rem;
+    }
+</style>

src/routes/(console)/project-[region]-[project]/+error.svelte

@@ -1,12 +1,12 @@
 <script lang="ts">
+    import { base } from '$app/paths';
     import { page } from '$app/state';
     import { Button } from '$lib/elements/forms';
-    import { currentPlan, organizationList } from '$lib/stores/organization';
+    import { currentPlan, organization, organizationList } from '$lib/stores/organization';
     import SupportWizard from '$routes/(console)/supportWizard.svelte';
     import { wizard } from '$lib/stores/wizard';
     import { Badge, Layout, Typography } from '@appwrite.io/pink-svelte';
     import type { Models } from '@appwrite.io/console';
-
     function contactSupport() {
         wizard.start(SupportWizard);
     }
@@ -16,9 +16,39 @@
     );
 
     $: hasPremiumSupport = $currentPlan?.premiumSupport ?? allOrgsHavePremiumSupport ?? false;
+
+    $: orgId = $organization?.$id;
+    $: billingUrl = orgId ? `${base}/organization-${orgId}/billing` : null;
+    $: isPaymentError = page.status === 402;
 </script>
 
-{#if page.error.type === 'general_resource_blocked'}
+{#if isPaymentError}
+    <section class="resource-blocked">
+        <div class="resource-blocked__content">
+            <Layout.Stack gap="s" alignItems="center">
+                <Badge type="error" variant="secondary" content="Budget limit reached" />
+                <Layout.Stack gap="xs" alignItems="center">
+                    <Typography.Title size="l" align="center">
+                        Your organization has reached its budget limit
+                    </Typography.Title>
+                    <Typography.Text align="center">
+                        Access to this resource has been blocked. Update your billing settings to
+                        restore access.
+                    </Typography.Text>
+                </Layout.Stack>
+                <div class="u-margin-block-start-16">
+                    <Layout.Stack direction="row" gap="s" justifyContent="center">
+                        {#if billingUrl}
+                            <Button href={billingUrl}>Go to billing</Button>
+                        {/if}
+                        <Button secondary href="{base}/account/organizations"
+                            >Change organization</Button>
+                    </Layout.Stack>
+                </div>
+            </Layout.Stack>
+        </div>
+    </section>
+{:else if page.error.type === 'general_resource_blocked'}
     <section class="resource-blocked">
         <div class="resource-blocked__content">
             <Layout.Stack gap="s" alignItems="center">