feat: add the community-funded Homarr assistant provider (#6563)

* Add Homarr provider proxy foundation

* Complete Homarr provider integration

* Harden Homarr provider integration

* Address Homarr provider review feedback

* Address CodeRabbit provider feedback

* Localize provider errors

* Handle provider activity load failures

* docs: improve workshop and homepage

* Harden Homarr provider limits

* fix: harden the Homarr provider

* fix: address provider review feedback

* fix: clarify provider request accounting

* feat: complete the Homarr provider endpoint

* fix: terminate invalid provider streams

apps/docs/src/components/assistant-provider/open-collective-link.module.css

@@ -0,0 +1,41 @@
+.link {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.45rem 0.7rem;
+  border: 1px solid var(--ifm-color-emphasis-300);
+  border-radius: 0.5rem;
+  background: var(--ifm-background-surface-color);
+  color: var(--ifm-font-color-base);
+  font-size: 0.875rem;
+  font-weight: 600;
+  line-height: 1.25;
+  text-decoration: none;
+  transition:
+    background-color 150ms ease,
+    border-color 150ms ease;
+}
+
+.link:hover {
+  border-color: var(--ifm-color-emphasis-500);
+  background: var(--ifm-color-emphasis-100);
+  color: var(--ifm-font-color-base);
+  text-decoration: none;
+}
+
+.link:focus-visible {
+  outline: 2px solid var(--ifm-color-primary);
+  outline-offset: 2px;
+}
+
+.logo {
+  width: 1.1rem;
+  height: 1.1rem;
+  flex: 0 0 auto;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .link {
+    transition: none;
+  }
+}