refactor(ui): extract Explore, Login, Register and CreateGroup from app.js

ExplorePage → explore-page.js (static import), LoginPage/RegisterPage/
FirstRunPage → auth-page.js (static import, LoginPage receives onLogin
as a prop), CreateGroupPage/wizard → create-group-page.js (lazy-loaded
via dynamic import(), same pattern as AdminPage/NodePage).

app.js goes from 1803 to 914 lines. webapp.py _ASSETS extended with the
three new files and the previously missing extracted pages. Test fixtures
updated to follow the moved components.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

1 files changed, 100 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/explore-page.js b/packages/meshbay-hub/src/meshbay_hub/static/explore-page.js
new file mode 100644
index 0000000..486c1e6
--- /dev/null
+++ b/packages/meshbay-hub/src/meshbay_hub/static/explore-page.js
@@ -0,0 +1,100 @@
+import {
+  html, useState, useEffect, useCallback,
+} from './vendor/htm-preact.js';
+import { t } from './i18n.js';
+import { hubFetch, navigate } from './hub-client.js';
+import * as platform from './platform.js';
+import { GroupName } from './group-name.js';
+import { Icon } from './icon.js';
+
+export function ExplorePage({ token, myGroupIds, allowPublicGroups = true }) {
+  const [groups, setGroups] = useState([]);
+  const [loading, setLoading] = useState(true);
+  const [search, setSearch] = useState('');
+  const [joining, setJoining] = useState(null);
+
+  const doSearch = useCallback((q) => {
+    setLoading(true);
+    const url = q ? `/v1/groups?q=${encodeURIComponent(q)}` : '/v1/groups';
+    hubFetch(url, { token })
+      .then(data => setGroups(data.groups || []))
+      .catch(() => {})
+      .finally(() => setLoading(false));
+  }, [token]);
+
+  useEffect(() => { doSearch(''); }, [token]);
+
+  const onSearch = useCallback((e) => {
+    const q = e.target.value;
+    setSearch(q);
+    doSearch(q);
+  }, [doSearch]);
+
+  const joinGroup = useCallback(async (gid) => {
+    setJoining(gid);
+    try {
+      await hubFetch(`/v1/groups/${gid}/join`, { method: 'POST', token });
+      navigate(`/group/${gid}`);
+      setTimeout(() => window.location.reload(), 100);
+    } catch (err) {
+      if (err.message.includes('Already a member')) {
+        navigate(`/group/${gid}`);
+      } else {
+        alert(err.message);
+      }
+    } finally {
+      setJoining(null);
+    }
+  }, [token]);
+
+  const isMember = (gid) => myGroupIds && myGroupIds.includes(gid);
+
+  if (!allowPublicGroups) {
+    return html`<div><p class="page-message">${t('explore.disabled')}</p></div>`;
+  }
+
+  return html`
+    <div>
+      <div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:16px">
+        <h2 style="margin:0">${t('explore.title')}</h2>
+        ${platform.node.available && html`
+          <a class="admin-btn" href="#/create-group">${t('explore.create_group')}</a>
+        `}
+      </div>
+      <div class="file-toolbar" style="margin-bottom:16px">
+        <input type="text" class="admin-search" placeholder="${t('explore.search')}"
+          value=${search} onInput=${onSearch} />
+      </div>
+      ${loading
+        ? html`<p class="page-message">${t('explore.loading')}</p>`
+        : groups.length === 0
+          ? html`<p class="page-message">${t('explore.empty')}</p>`
+          : html`
+            <div class="group-grid">
+              ${groups.map(g => html`
+                <div key=${g.id} class="group-card">
+                  <a href="#/group/${g.id}" style="text-decoration:none;color:inherit">
+                    <h3><${GroupName} name=${g.name}
+                      owner=${g.source && g.source !== 'local' ? g.source : g.owner_username} /></h3>
+                    ${g.description && html`<p class="group-card-desc">${g.description}</p>`}
+                  </a>
+                  <span class="badge">${g.join_policy}</span>
+                  ${' '}
+                  ${isMember(g.id)
+                    ? html`<span class="badge">${t('explore.member')}</span>`
+                    : g.join_policy === 'open' && html`
+                      <button class="admin-btn" style="margin-top:8px"
+                        disabled=${joining === g.id}
+                        onClick=${() => joinGroup(g.id)}>
+                        ${joining === g.id ? '...' : t('explore.join')}
+                      </button>
+                    `
+                  }
+                </div>
+              `)}
+            </div>
+          `
+      }
+    </div>
+  `;
+}