Add file upload for SSH private key and certificate fields (#15)

* Add editable display-name field to generic integrations

Lets users set a custom name for Proxmox, Docker, AWS, Remote Desktop,
Netbird, Cloudflare, Uptime Kuma, and Weather integrations, separate
from the host/IP field, mirroring the SSH host rename pattern.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016kF4hZWEkRCPPvCZTeXxn4

* Surface the new-integration name field as a labeled input

The name field for new generic integrations was a faint header input
with only placeholder text, easy to miss. Move it into the form grid
as a proper labeled "Name" field next to the other connection fields.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016kF4hZWEkRCPPvCZTeXxn4

* Add file upload for SSH private key and certificate fields

Lets users pick a key file from disk (e.g. ~/.ssh) instead of pasting
its contents into the Private Key / OPKSSH Certificate fields.

* Fix SSH private key paste corrupting multi-line PEM format

Private Key and Certificate fields were single-line <input> elements,
which strip newlines on paste and corrupt PEM-formatted keys (causing
'Unsupported key format' errors). Render them as multi-line textareas
instead so pasted keys keep their line breaks.

---------

Co-authored-by: Claude <noreply@anthropic.com>

src/pages/Settings.tsx

@@ -35,7 +35,7 @@ const accentColors = [
   { name: 'Red', color: '#E74C3C' },
 ]
 
-type FieldDef = { key: string; label: string; secret?: boolean; hint?: string; placeholder?: string }
+type FieldDef = { key: string; label: string; secret?: boolean; hint?: string; placeholder?: string; file?: boolean }
 
 const integrationTypeDefs: { type: string; name: string; multiInstance?: boolean; fields: FieldDef[] }[] = [
   { type: 'proxmox', name: 'Proxmox', multiInstance: true, fields: [
@@ -83,9 +83,9 @@ const sshFields: FieldDef[] = [
   { key: 'port', label: 'Port (default 22)' },
   { key: 'username', label: 'Username' },
   { key: 'password', label: 'Password', secret: true },
-  { key: 'privateKey', label: 'Private Key (PEM)', secret: true },
+  { key: 'privateKey', label: 'Private Key (PEM)', secret: true, file: true },
   { key: 'passphrase', label: 'Key Passphrase', secret: true },
-  { key: 'certificate', label: 'OPKSSH Certificate (id_key-cert.pub)', secret: true },
+  { key: 'certificate', label: 'OPKSSH Certificate (id_key-cert.pub)', secret: true, file: true },
 ]
 
 const cardBase: React.CSSProperties = {
@@ -385,6 +385,7 @@ function SshHostsSection() {
   const [busy, setBusy] = useState<Set<number>>(new Set())
   const [newDrafts, setNewDrafts] = useState<{ key: number; values: Record<string, string> }[]>([])
   const nextNewKey = useRef(-1)
+  const fileInputRefs = useRef<Record<string, HTMLInputElement | null>>({})
 
   useEffect(() => {
     refresh()
@@ -546,12 +547,50 @@ function SshHostsSection() {
       const isRevealed = revealed.has(key)
       const savedValue = f.secret ? '' : existing?.config[f.key] ?? ''
       const value = values[f.key] ?? savedValue
+
+      if (f.file) {
+        return (
+          <div key={key} className="col-span-3">
+            <label style={labelStyle}>{f.label}</label>
+            <div className="relative">
+              <textarea
+                style={{ ...inputStyle, height: '90px', paddingRight: '32px', fontFamily: 'monospace', resize: 'vertical', whiteSpace: 'pre' }}
+                value={value}
+                onChange={(e) => onChange(f.key, e.target.value)}
+                placeholder={existing ? '•••••••••••• (paste to replace)' : 'Paste key contents here, or upload a file'}
+              />
+              <input
+                type="file"
+                ref={(el) => { fileInputRefs.current[key] = el }}
+                style={{ display: 'none' }}
+                onChange={(e) => {
+                  const file = e.target.files?.[0]
+                  if (!file) return
+                  const reader = new FileReader()
+                  reader.onload = () => onChange(f.key, String(reader.result ?? '').trim())
+                  reader.readAsText(file)
+                  e.target.value = ''
+                }}
+              />
+              <button
+                onClick={() => fileInputRefs.current[key]?.click()}
+                title="Upload from file"
+                className="absolute cursor-pointer border-none bg-transparent"
+                style={{ right: '8px', top: '8px', color: '#7A7D85' }}
+              >
+                <Upload size={13} />
+              </button>
+            </div>
+          </div>
+        )
+      }
+
       return (
         <div key={key}>
           <label style={labelStyle}>{f.label}</label>
           <div className="relative">
             <input
-              style={inputStyle}
+              style={{ ...inputStyle, paddingRight: f.secret ? '32px' : undefined }}
               type={f.secret && !isRevealed ? 'password' : 'text'}
               value={value}
               onChange={(e) => onChange(f.key, e.target.value)}