Add LDAP avatar photos, UX polish, and TDS component upgrades

- Add /api/avatar endpoint querying lldap for user jpegPhoto; disk cache
  with sentinel pattern avoids repeat LDAP hits for users without photos
- Add ldap3 dependency and ldap config block to config.json
- Wire lt-avatar img overlay in base.html with capture-phase error
  fallback (lt-avatar-img-err) to reveal initials when image is absent
- Fix lt-avatar CSS shim: position:relative + absolute inset on img
  (local base.css was missing these; added to style.css)
- Replace all empty-state paragraphs with proper lt-empty-state markup
  (icon + title + body) across index, suppressions, inspector, app.js
- Add lt-spinner--cyan next to refresh button; shows during refreshAll()
- Replace inspector panel-section-title with lt-divider throughout
- Add data-tooltip attributes to SFP DOM metrics, TX/RX/Carrier/Duplex/
  Auto-neg/Error labels in links.html and inspector panel
- Add tooltips to events table column headers (Sev, First Seen, Failures)
- Fix links.html host panel timestamp (was reading sample.updated which
  is always undefined; now uses data.updated)
- Fix UniFi status text casing (Online→ONLINE to match server render)
- Remove dead topo-status-* class manipulation from updateTopology()
- Always render alert-count-badge; toggle display:none when count is 0
- Fix double UniFi get_devices() call in monitor.py run loop
- Fix chip-critical animation (was using green pulse-glow; now red)

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

static/style.css

@@ -5,6 +5,12 @@
    This file adds only gandalf-specific components.
    ══════════════════════════════════════════════════════════════════════ */
 
+/* ── lt-avatar image overlay (base.css compat shim) ───────────────── */
+/* Older base.css missing position:relative + position:absolute on img */
+.lt-avatar { position: relative; }
+.lt-avatar img { position: absolute; inset: 0; }
+.lt-avatar img.lt-avatar-img-err { display: none; }
+
 /* ── Variable aliases bridging to base.css palette ────────────────── */
 :root {
   /* Short names used throughout custom components */
@@ -54,6 +60,28 @@
   --glow-cyan:   none;
   --glow-xl:     none;
 }
+[data-theme="light"] .topology {
+  background-image: radial-gradient(circle, rgba(0,100,160,0.07) 1px, transparent 1px);
+}
+[data-theme="light"] .topo-vc-label {
+  background: rgba(235,238,242,.88);
+}
+
+/* ── Header overlap fix ───────────────────────────────────────────
+   .lt-container's padding shorthand resets padding-top, defeating
+   .lt-main's padding-top. The combined selector restores it. */
+.lt-main.lt-container {
+  padding-top: calc(var(--header-height) + var(--space-lg));
+}
+@media (max-height: 500px) and (orientation: landscape) {
+  .lt-main.lt-container { padding-top: calc(42px + var(--space-md)); }
+}
+@media (max-width: 767px) {
+  .lt-main.lt-container { padding-top: calc(50px + var(--space-md)); }
+}
+@media (max-width: 479px) {
+  .lt-main.lt-container { padding-top: calc(46px + var(--space-sm)); }
+}
 
 /* ── Refresh button loading state ────────────────────────────────── */
 [data-action="refresh"].is-loading {
@@ -173,7 +201,7 @@
   border: 1px solid;
   letter-spacing: .04em;
 }
-.chip-critical { color: var(--red);    border-color: var(--red);    text-shadow: var(--glow-red); animation: pulse-glow 2s infinite; }
+.chip-critical { color: var(--red);    border-color: var(--red);    text-shadow: var(--glow-red); animation: topo-pulse-down 2s ease-in-out infinite; }
 .chip-warning  { color: var(--orange); border-color: var(--orange); }
 .chip-ok       { color: var(--green);  border-color: var(--green-muted); text-shadow: var(--glow); }
 .status-meta { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
@@ -217,12 +245,27 @@
   border: 1px solid var(--border-color);
   padding: 12px;
   position: relative;
+  overflow: hidden;
   transition: border-color .2s, box-shadow .2s;
 }
+/* Corner accent triangle — mirrors test code's status-tinted corner */
+.host-card::after {
+  content: '';
+  position: absolute;
+  top: 0; right: 0;
+  width: 0; height: 0;
+  border-style: solid;
+  border-width: 0 10px 10px 0;
+  border-color: transparent var(--border-color) transparent transparent;
+  transition: border-color .2s;
+}
 .host-card:hover { border-color: var(--accent-orange); box-shadow: 0 0 12px rgba(255,107,0,.1); }
 .host-card-up       { border-left: 3px solid var(--green); }
+.host-card-up::after    { border-color: transparent rgba(0,255,136,.45) transparent transparent; }
 .host-card-down     { border-left: 3px solid var(--red);   box-shadow: inset 3px 0 10px rgba(255,45,85,.08); }
+.host-card-down::after  { border-color: transparent rgba(255,45,85,.55) transparent transparent; }
 .host-card-degraded { border-left: 3px solid var(--orange); }
+.host-card-degraded::after { border-color: transparent rgba(255,107,0,.45) transparent transparent; }
 .host-card-header   { margin-bottom: 8px; }
 .host-name-row      { display: flex; align-items: center; gap: 6px; margin-bottom: 3px; }
 .host-name { font-weight: bold; font-size: .88em; color: var(--amber); letter-spacing: .04em; }
@@ -286,7 +329,9 @@
 
 /* ── Topology diagram ─────────────────────────────────────────────── */
 .topology {
-  background: var(--bg2);
+  background-color: var(--bg2);
+  background-image: radial-gradient(circle, rgba(0,212,255,0.07) 1px, transparent 1px);
+  background-size: 22px 22px;
   border: 1px solid var(--border-color);
   padding: 20px 16px 16px;
   margin-bottom: 16px;
@@ -329,9 +374,18 @@
   background: linear-gradient(to bottom, var(--cyan), var(--green));
   opacity: .7;
 }
+/* Blurred copy of the wire for a soft glow halo */
+.topo-vc-wire::before {
+  content: '';
+  position: absolute;
+  inset: 0;
+  background: inherit;
+  filter: blur(5px);
+  opacity: .5;
+}
 .topo-vc-label {
   position: absolute;
-  left: calc(50% + 6px);
+  left: calc(50% + 7px);
   top: 50%;
   transform: translateY(-50%);
   font-size: .58em;
@@ -339,6 +393,8 @@
   white-space: nowrap;
   letter-spacing: .06em;
   font-family: var(--font);
+  background: rgba(3,5,8,.7);
+  padding: 1px 4px;
 }
 
 .topo-v2-node {
@@ -355,26 +411,45 @@
   min-width: 110px;
   text-align: center;
   transition: border-color .2s, box-shadow .2s;
+  overflow: hidden;
 }
+/* Top highlight strip — color matches node type / status */
+.topo-v2-node::before {
+  content: '';
+  position: absolute;
+  top: 0; left: 0; right: 0;
+  height: 2px;
+  background: currentColor;
+  opacity: .4;
+}
+.topo-v2-status-up.topo-v2-node::before       { background: var(--green);  opacity: .65; }
+.topo-v2-status-down.topo-v2-node::before     { background: var(--red);    opacity: .75; }
+.topo-v2-status-degraded.topo-v2-node::before { background: var(--orange); opacity: .65; }
+.topo-v2-status-unknown.topo-v2-node::before  { opacity: .15; }
 .topo-v2-icon  { font-size: 1.3em; line-height: 1; }
 .topo-v2-label { font-weight: bold; letter-spacing: .04em; }
 .topo-v2-sub   { font-size: .58em; color: var(--text-muted); letter-spacing: .02em; }
 .topo-v2-vlan  { font-size: .54em; color: var(--cyan); opacity: .75; }
 
-.topo-v2-internet { border-color: var(--cyan);  color: var(--cyan);  text-shadow: var(--glow-cyan); }
-.topo-v2-router   { border-color: var(--cyan);  color: var(--cyan);  text-shadow: var(--glow-cyan); }
-.topo-v2-switch   { border-color: var(--amber); color: var(--amber); text-shadow: var(--glow-amber); }
+.topo-v2-internet { border-color: var(--cyan);  color: var(--cyan);  text-shadow: var(--glow-cyan); box-shadow: 0 0 12px rgba(0,212,255,.12); }
+.topo-v2-router   { border-color: var(--cyan);  color: var(--cyan);  text-shadow: var(--glow-cyan); box-shadow: 0 0 12px rgba(0,212,255,.14); }
+.topo-v2-switch   { border-color: var(--amber); color: var(--amber); text-shadow: var(--glow-amber); box-shadow: 0 0 12px rgba(255,179,0,.12); }
 .topo-v2-host     { border-color: var(--border-color); color: var(--text); cursor: default; }
 
+@keyframes topo-pulse-down {
+  0%,100% { box-shadow: 0 0 6px rgba(255,45,85,.3); }
+  50%     { box-shadow: 0 0 18px rgba(255,45,85,.75), 0 0 30px rgba(255,45,85,.2); }
+}
+
 .topo-v2-status-up       { border-color: var(--green);  box-shadow: 0 0 8px rgba(0,255,136,.2); }
-.topo-v2-status-down     { border-color: var(--red);    box-shadow: 0 0 8px rgba(255,45,85,.35); animation: pulse-glow 2s infinite; }
+.topo-v2-status-down     { border-color: var(--red);    animation: topo-pulse-down 2s ease-in-out infinite; }
 .topo-v2-status-degraded { border-color: var(--orange); box-shadow: 0 0 8px rgba(255,107,0,.2); }
 .topo-v2-status-unknown  { border-color: var(--border-color); }
 .topo-v2-offrack         { border-style: dashed !important; }
 
 .topo-badge { font-size: .68em; padding: 1px 5px; border: 1px solid; letter-spacing: .03em; }
 .topo-badge-up       { color: var(--green);      border-color: var(--green);      text-shadow: var(--glow); }
-.topo-badge-down     { color: var(--red);        border-color: var(--red);        animation: pulse-glow 1.5s infinite; }
+.topo-badge-down     { color: var(--red);        border-color: var(--red);        animation: topo-pulse-down 1.5s ease-in-out infinite; }
 .topo-badge-degraded { color: var(--orange);     border-color: var(--orange); }
 .topo-badge-unknown  { color: var(--text-muted); border-color: var(--border-color); }
 
@@ -398,6 +473,7 @@
   background: repeating-linear-gradient(to bottom, var(--red) 0 6px, transparent 6px 10px) !important;
   background-size: 2px 10px !important;
   opacity: .9 !important;
+  transition: none !important;
   animation: wire-dash-anim .7s linear infinite;
 }
 
@@ -419,8 +495,9 @@
   flex: 1;
   height: 2px;
   background: var(--green);
-  opacity: .45;
+  opacity: .55;
   margin: 0 4px;
+  box-shadow: 0 0 6px rgba(0,255,136,.4);
 }
 .topo-bus-10g-label {
   font-size: .56em;
@@ -483,7 +560,7 @@
   color: var(--text-muted);
   font-family: var(--font);
 }
-.topo-legend-line-10g { width: 24px; height: 2px; background: var(--green); display: inline-block; }
+.topo-legend-line-10g { width: 24px; height: 2px; background: var(--green); display: inline-block; box-shadow: 0 0 4px rgba(0,255,136,.5); }
 .topo-legend-line-1g  { width: 24px; height: 0; border-top: 2px dashed var(--amber); display: inline-block; }
 .topo-legend-line-wan { width: 24px; height: 2px; background: linear-gradient(to right, var(--cyan), var(--green)); display: inline-block; }
 
@@ -564,6 +641,8 @@
 .traffic-label    { font-size: .62em; color: var(--text-muted); width: 20px; text-transform: uppercase; letter-spacing: .04em; flex-shrink: 0; }
 .traffic-row .lt-progress { flex: 1; height: 5px; }
 .traffic-value    { font-size: .7em; color: var(--text-dim); width: 68px; text-align: right; flex-shrink: 0; }
+/* Amber variant for lt-progress (65-85% utilisation warning) */
+.lt-progress--amber .lt-progress-bar { background: var(--amber); box-shadow: 0 0 5px var(--amber), 0 0 10px rgba(255,179,0,.35); }
 
 /* SFP / optical panel */
 .sfp-panel {
@@ -751,7 +830,7 @@
 .switch-port-block.poe-active:hover { box-shadow: var(--glow-amber); }
 .switch-port-block.uplink           { background: var(--cyan-dim); border-color: var(--cyan); color: var(--cyan); }
 .switch-port-block.uplink:hover     { box-shadow: var(--glow-cyan); }
-.switch-port-block.selected         { outline: 2px solid #fff; outline-offset: 1px; }
+.switch-port-block.selected         { outline: 2px solid rgba(255,255,255,.85); outline-offset: 1px; box-shadow: 0 0 8px rgba(255,255,255,.5); }
 .port-num   { line-height: 1; font-weight: bold; }
 .port-speed { font-size: .72em; opacity: .7; line-height: 1; font-weight: normal; }
 .port-lldp  { font-size: .62em; opacity: .65; line-height: 1; max-width: 32px; overflow: hidden; white-space: nowrap; text-overflow: clip; font-weight: normal; }
@@ -820,17 +899,9 @@
   transition: all .15s;
 }
 .panel-close:hover { color: var(--red); border-color: var(--red); }
-.panel-section-title {
-  font-size: .62em;
-  font-weight: bold;
-  color: var(--amber);
-  text-transform: uppercase;
-  letter-spacing: .1em;
-  margin: 10px 0 5px;
-  padding-bottom: 3px;
-  border-bottom: 1px solid rgba(255,107,0,.12);
-}
-.panel-section-title:first-of-type { margin-top: 0; }
+/* Inspector panel uses lt-divider — compact spacing overrides */
+.inspector-panel .lt-divider { margin: 8px 0 4px; }
+.inspector-panel .lt-divider-label { color: var(--amber); font-size: .6em; }
 .panel-row {
   display: flex;
   justify-content: space-between;