Checkpoint: grpc auth fix, issuer list/detail, v2 protos, architecture docs

Co-authored-by: Junie <junie@jetbrains.com>

web/templates/issuer_detail.html

@@ -0,0 +1,60 @@
+{{define "title"}} - Issuer: {{.IssuerName}}{{end}}
+{{define "content"}}
+<h2>Issuer: {{.IssuerName}}</h2>
+
+<p>
+    <a href="/pki">&larr; PKI: {{.MountName}}</a>
+    &nbsp;&mdash;&nbsp;
+    <a href="/pki/{{.IssuerName}}" download="{{.IssuerName}}.pem">Download Issuer Cert (PEM)</a>
+</p>
+
+<h3>Certificates</h3>
+
+<form method="get" action="/pki/issuer/{{.IssuerName}}" style="margin-bottom: 1rem;">
+    <div class="form-row">
+        <div class="form-group">
+            <label for="name_filter">Filter by name</label>
+            <input type="text" id="name_filter" name="name" value="{{.NameFilter}}" placeholder="common name contains...">
+        </div>
+        <div class="form-group">
+            <label for="sort_by">Sort by</label>
+            <select id="sort_by" name="sort">
+                <option value="cn"{{if eq .SortBy "cn"}} selected{{end}}>Common Name</option>
+                <option value="expiry"{{if eq .SortBy "expiry"}} selected{{end}}>Expiry Date</option>
+            </select>
+        </div>
+        <div class="form-group" style="align-self: flex-end;">
+            <button type="submit">Apply</button>
+        </div>
+    </div>
+</form>
+
+{{if .Certs}}
+<table>
+    <thead>
+        <tr>
+            <th>Common Name</th>
+            <th>Profile</th>
+            <th>Serial</th>
+            <th>Issued By</th>
+            <th>Issued At</th>
+            <th>Expires At</th>
+        </tr>
+    </thead>
+    <tbody>
+    {{range .Certs}}
+    <tr>
+        <td>{{index . "cn"}}</td>
+        <td>{{index . "profile"}}</td>
+        <td><code>{{index . "serial"}}</code></td>
+        <td>{{index . "issued_by"}}</td>
+        <td>{{index . "issued_at"}}</td>
+        <td>{{index . "expires_at"}}</td>
+    </tr>
+    {{end}}
+    </tbody>
+</table>
+{{else}}
+<p>No certificates found{{if .NameFilter}} matching &ldquo;{{.NameFilter}}&rdquo;{{end}}.</p>
+{{end}}
+{{end}}