Dodaj admin web panel u repo (admin/), sinhronizuj systemd unite

- admin/: LAN web panel (Flask + waitress + python-pam), status servisa,
  PAM login sa idriz korisnikom, vertikalni meni. Port 8080, samo LAN.
- systemd/idriz-admin.service: korisnički servis, enabled + Restart=always
  + StartLimitIntervalSec=0.
- systemd/idriz.service: dodan StartLimitIntervalSec=0 (repo je bio zastario).

Od sada sav aplikacioni source code ide u ovaj repo.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LzKpYaEsuWDevuNnvSjcFW

admin/templates/login.html

@@ -0,0 +1,38 @@
+{% extends "base.html" %}
+{% block title %}Prijava — Idriz Admin{% endblock %}
+{% block extra_css %}
+  .layout { display: block; }
+  .sidebar { display: none; }
+  .main { max-width: none; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 100vh; }
+  .main .flash { width: 340px; }
+  .login-box {
+    background: var(--panel); border: 1px solid var(--line); border-radius: 12px;
+    padding: 32px; width: 340px; box-shadow: 0 6px 24px rgba(0,0,0,.06);
+  }
+  .login-box h1 { font-size: 20px; margin: 0 0 4px; }
+  .login-box .sub { margin-bottom: 22px; }
+  label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
+  input {
+    width: 100%; padding: 10px 12px; font-size: 15px; margin-bottom: 16px;
+    border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink);
+  }
+  input:focus { outline: none; border-color: var(--accent); }
+  button {
+    width: 100%; padding: 11px; font-size: 15px; font-weight: 600; color: #fff;
+    background: var(--accent); border: none; border-radius: 8px; cursor: pointer;
+  }
+  button:hover { filter: brightness(1.05); }
+{% endblock %}
+{% block content %}
+  <div class="login-box">
+    <h1>Idriz Admin</h1>
+    <p class="sub">Prijavi se sa sistemskim korisnikom.</p>
+    <form method="post">
+      <label for="username">Korisničko ime</label>
+      <input id="username" name="username" autofocus autocomplete="username" value="idriz">
+      <label for="password">Lozinka</label>
+      <input id="password" name="password" type="password" autocomplete="current-password">
+      <button type="submit">Prijava</button>
+    </form>
+  </div>
+{% endblock %}