feat(gui): add create modals for issuers, policies, profiles, owners, teams, agent groups

Six pages were read-only viewers despite the API client having all
create functions wired up. Users deploying certctl had no way to create
CAs or other objects from the GUI — reported in GitHub issue.

- IssuersPage: 2-step create modal (type selection → config) for
  Local CA, ACME, step-ca, OpenSSL/Custom issuer types
- PoliciesPage: create modal with type, severity, JSON config, enabled
- ProfilesPage: create modal with name, description, max TTL, short-lived
- OwnersPage: create modal with name, email, team dropdown
- TeamsPage: create modal with name, description
- AgentGroupsPage: create modal with match criteria fields
- Layout.tsx: version v2.0.5 → v2.0.7
- cmd/server/main.go: version 0.1.0 → 2.0.7

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

web/src/pages/TeamsPage.tsx

@@ -1,5 +1,6 @@
+import { useState } from 'react';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
-import { getTeams, deleteTeam } from '../api/client';
+import { getTeams, deleteTeam, createTeam } from '../api/client';
 import PageHeader from '../components/PageHeader';
 import DataTable from '../components/DataTable';
 import type { Column } from '../components/DataTable';
@@ -7,8 +8,87 @@ import ErrorState from '../components/ErrorState';
 import { formatDateTime } from '../api/utils';
 import type { Team } from '../api/types';
 
+interface CreateTeamModalProps {
+  isOpen: boolean;
+  onClose: () => void;
+  onSuccess: () => void;
+  isLoading: boolean;
+  error: string | null;
+}
+
+function CreateTeamModal({ isOpen, onClose, onSuccess, isLoading, error }: CreateTeamModalProps) {
+  const [name, setName] = useState('');
+  const [description, setDescription] = useState('');
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    if (!name.trim()) return;
+    try {
+      await createTeam({
+        name: name.trim(),
+        description: description.trim(),
+      });
+      setName('');
+      setDescription('');
+      onSuccess();
+    } catch (err) {
+      console.error('Create team error:', err);
+    }
+  };
+
+  if (!isOpen) return null;
+
+  return (
+    <div className="fixed inset-0 bg-black/40 flex items-center justify-center z-50" onClick={onClose}>
+      <div className="bg-surface border border-surface-border rounded p-5 w-full max-w-md shadow-xl" onClick={e => e.stopPropagation()}>
+        <h2 className="text-lg font-semibold text-ink mb-4">Create Team</h2>
+        {error && <div className="mb-4 p-3 bg-red-50 border border-red-200 rounded text-sm text-red-700">{error}</div>}
+        <form onSubmit={handleSubmit} className="space-y-4">
+          <div>
+            <label className="block text-sm font-medium text-ink mb-1">Name *</label>
+            <input
+              value={name}
+              onChange={e => setName(e.target.value)}
+              className="w-full bg-white border border-surface-border rounded px-3 py-2 text-sm text-ink focus:outline-none focus:border-brand-400"
+              placeholder="e.g., Platform Team"
+              required
+            />
+          </div>
+          <div>
+            <label className="block text-sm font-medium text-ink mb-1">Description</label>
+            <textarea
+              value={description}
+              onChange={e => setDescription(e.target.value)}
+              className="w-full bg-white border border-surface-border rounded px-3 py-2 text-sm text-ink focus:outline-none focus:border-brand-400"
+              placeholder="Optional team description"
+              rows={2}
+            />
+          </div>
+          <div className="flex gap-2 pt-4">
+            <button
+              type="submit"
+              disabled={isLoading}
+              className="flex-1 btn btn-primary disabled:opacity-50 disabled:cursor-not-allowed"
+            >
+              {isLoading ? 'Creating...' : 'Create Team'}
+            </button>
+            <button
+              type="button"
+              onClick={onClose}
+              className="flex-1 btn btn-ghost"
+            >
+              Cancel
+            </button>
+          </div>
+        </form>
+      </div>
+    </div>
+  );
+}
+
 export default function TeamsPage() {
   const queryClient = useQueryClient();
+  const [showCreate, setShowCreate] = useState(false);
 
   const { data, isLoading, error, refetch } = useQuery({
     queryKey: ['teams'],
@@ -21,6 +101,14 @@ export default function TeamsPage() {
     onError: (err: Error) => alert(`Delete failed: ${err.message}`),
   });
 
+  const createMutation = useMutation({
+    mutationFn: createTeam,
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['teams'] });
+      setShowCreate(false);
+    },
+  });
+
   const columns: Column<Team>[] = [
     {
       key: 'name',
@@ -60,7 +148,15 @@ export default function TeamsPage() {
 
   return (
     <>
-      <PageHeader title="Teams" subtitle={data ? `${data.total} teams` : undefined} />
+      <PageHeader
+        title="Teams"
+        subtitle={data ? `${data.total} teams` : undefined}
+        action={
+          <button onClick={() => setShowCreate(true)} className="btn btn-primary">
+            + New Team
+          </button>
+        }
+      />
       <div className="flex-1 overflow-y-auto">
         {error ? (
           <ErrorState error={error as Error} onRetry={() => refetch()} />
@@ -68,6 +164,13 @@ export default function TeamsPage() {
           <DataTable columns={columns} data={data?.data || []} isLoading={isLoading} emptyMessage="No teams configured" />
         )}
       </div>
+      <CreateTeamModal
+        isOpen={showCreate}
+        onClose={() => setShowCreate(false)}
+        onSuccess={() => {}}
+        isLoading={createMutation.isPending}
+        error={createMutation.error ? (createMutation.error as Error).message : null}
+      />
     </>
   );
 }