diff --git a/packages/node/meshnet_node/cli.py b/packages/node/meshnet_node/cli.py
index 6b81c63..af2b7d9 100644
--- a/packages/node/meshnet_node/cli.py
+++ b/packages/node/meshnet_node/cli.py
@@ -68,6 +68,7 @@ def _run_node(cfg: dict) -> None:
             tracker_source_disabled=bool(cfg.get("tracker_source_disabled", False)),
             torch_threads=cfg.get("torch_threads"),
             torch_interop_threads=cfg.get("torch_interop_threads"),
+            node_name=cfg.get("node_name"),
         )
     except Exception as exc:
         print(f"\nERROR: {exc}", file=sys.stderr, flush=True)
@@ -157,6 +158,8 @@ def _cmd_default(args) -> int:
         overrides["host"] = args.host
     if args.advertise_host:
         overrides["advertise_host"] = args.advertise_host
+    if getattr(args, "node_name", None):
+        overrides["node_name"] = args.node_name
     if args.route_timeout != 30.0:
         overrides["route_timeout"] = args.route_timeout
     if getattr(args, "memory", None) is not None:
@@ -246,6 +249,8 @@ def _cmd_start(args) -> int:
         cfg["wallet_path"] = args.wallet
     if args.download_dir:
         cfg["download_dir"] = args.download_dir
+    if getattr(args, "node_name", None):
+        cfg["node_name"] = args.node_name
 
     # Legacy start: just run without the dashboard (keep original blocking loop)
     from .startup import run_startup
@@ -270,6 +275,7 @@ def _cmd_start(args) -> int:
             tracker_source_disabled=getattr(args, "tracker_source_disabled", False),
             torch_threads=getattr(args, "torch_threads", None),
             torch_interop_threads=getattr(args, "torch_interop_threads", None),
+            node_name=cfg.get("node_name"),
         )
     except Exception as exc:
         print(f"ERROR: {exc}", file=sys.stderr, flush=True)
@@ -315,6 +321,7 @@ def main() -> None:
     parser.add_argument("--port", type=int, metavar="N", help="Port to listen on")
     parser.add_argument("--host", metavar="ADDR", help="Interface to bind (default 0.0.0.0)")
     parser.add_argument("--advertise-host", metavar="ADDR", help="Host/IP advertised to the tracker")
+    parser.add_argument("--node-name", metavar="NAME", help="Friendly display name shown on the tracker dashboard")
     parser.add_argument("--route-timeout", type=float, metavar="SEC", default=30.0,
                         help="Seconds to wait for tracker route lookup (default 30)")
     parser.add_argument("--memory", type=int, metavar="MB", default=None,
@@ -350,6 +357,7 @@ def main() -> None:
     start_cmd.add_argument("--quantization", choices=["auto", "bfloat16", "int8", "nf4", "bf16"], default="auto")
     start_cmd.add_argument("--host", default="0.0.0.0")
     start_cmd.add_argument("--advertise-host")
+    start_cmd.add_argument("--node-name", help="Friendly display name shown on the tracker dashboard")
     start_cmd.add_argument("--tracker-mode", action="store_true")
     start_cmd.add_argument("--tracker-url", default=None)
     start_cmd.add_argument("--wallet")
diff --git a/packages/node/meshnet_node/startup.py b/packages/node/meshnet_node/startup.py
index 5f6730e..3b62b1b 100644
--- a/packages/node/meshnet_node/startup.py
+++ b/packages/node/meshnet_node/startup.py
@@ -610,6 +610,15 @@ def _warn_virtual_network_ip(ip: str | None) -> None:
         pass
 
 
+def _registration_display_fields(node_name: str | None) -> dict[str, str]:
+    if not node_name:
+        return {}
+    name = node_name.strip()
+    if not name:
+        return {}
+    return {"friendly_name": name}
+
+
 def run_startup(
     tracker_url: str,
     port: int = 0,
@@ -630,6 +639,7 @@ def run_startup(
     tracker_source_disabled: bool = False,
     torch_threads: int | None = None,
     torch_interop_threads: int | None = None,
+    node_name: str | None = None,
 ) -> StubNodeServer | TorchNodeServer:
     """Execute the full startup sequence and return a running node server.
 
@@ -646,6 +656,7 @@ def run_startup(
 
     tracker_url = tracker_url.rstrip("/")
     relay_url = _discover_relay_url(tracker_url)
+    display_fields = _registration_display_fields(node_name)
     if max_loaded_shards < 1:
         raise ValueError("--max-shards must be at least 1")
 
@@ -871,6 +882,7 @@ def run_startup(
             ),
             **registration_capabilities,
             **relay_fields,
+            **display_fields,
         }
         tracker_node_id = _register_with_tracker(
             tracker_url, reg_payload, node, _node_start_time,
@@ -1019,6 +1031,7 @@ def run_startup(
             ),
             **registration_capabilities,
             **relay_fields,
+            **display_fields,
         }
         tracker_node_id = _register_with_tracker(
             tracker_url, auto_reg_payload, node, _node_start_time,
@@ -1186,6 +1199,7 @@ def run_startup(
             "model_metadata": model_metadata_for(hf_repo, total_layers, cache_dir=shard_path),
             **registration_capabilities,
             **relay_fields,
+            **display_fields,
         }
         tracker_node_id = _register_with_tracker(
             tracker_url, reg_payload, node, _node_start_time,
@@ -1245,6 +1259,7 @@ def run_startup(
         "managed_assignment": not user_pinned_shard,
         **registration_capabilities,
         **relay_fields,
+        **display_fields,
     }
     try:
         reg_resp = _post_json(
diff --git a/packages/tracker/meshnet_tracker/accounts.py b/packages/tracker/meshnet_tracker/accounts.py
index 68099c5..23677d4 100644
--- a/packages/tracker/meshnet_tracker/accounts.py
+++ b/packages/tracker/meshnet_tracker/accounts.py
@@ -27,9 +27,24 @@ DEFAULT_ACCOUNTS_DB_PATH = "accounts.sqlite"
 SESSION_TTL = 7 * 86400.0  # seconds
 PBKDF2_ITERATIONS = 200_000
 MIN_PASSWORD_LENGTH = 8
+_MAX_NICKNAME_LENGTH = 64
 API_KEY_PREFIX = "sk-mesh-"
 
 _EMAIL_RE = re.compile(r"^[^@\s]+@[^@\s]+\.[^@\s]+$")
+_UNSET = object()
+
+
+def _normalize_nickname(value: object) -> str | None:
+    if value is None:
+        return None
+    if not isinstance(value, str):
+        raise ValueError("nickname must be a string")
+    nickname = value.strip()
+    if not nickname:
+        return None
+    if len(nickname) > _MAX_NICKNAME_LENGTH:
+        raise ValueError(f"nickname must be at most {_MAX_NICKNAME_LENGTH} characters")
+    return nickname
 
 
 def _hash_password(password: str, salt: str) -> str:
@@ -64,6 +79,7 @@ class AccountStore:
         email: str | None = None,
         wallet: str | None = None,
         password: str,
+        nickname: str | None = None,
     ) -> dict:
         """Create an account. The first account becomes the admin.
 
@@ -77,6 +93,7 @@ class AccountStore:
             raise ValueError("invalid email address")
         if len(password or "") < MIN_PASSWORD_LENGTH:
             raise ValueError(f"password must be at least {MIN_PASSWORD_LENGTH} characters")
+        nickname = _normalize_nickname(nickname)
         with self._lock:
             for identifier in filter(None, (email, wallet)):
                 if identifier.lower() in self._by_identifier:
@@ -91,11 +108,30 @@ class AccountStore:
                 "role": "admin" if not self._accounts else "user",
                 "password_hash": _hash_password(password, salt),
                 "salt": salt,
+                "nickname": nickname,
                 "ts": time.time(),
             }
             self._apply_locked(event)
             return self._public_view(self._accounts[event["account_id"]])
 
+    def update_profile(self, account_id: str, *, nickname: str | None = _UNSET) -> dict:
+        """Update display fields for an account. Pass nickname=None to clear."""
+        if nickname is not _UNSET:
+            nickname = _normalize_nickname(nickname)
+        with self._lock:
+            if account_id not in self._accounts:
+                raise ValueError("unknown account")
+            event = {
+                "id": f"profile-{uuid.uuid4().hex}",
+                "type": "update_profile",
+                "account_id": account_id,
+                "ts": time.time(),
+            }
+            if nickname is not _UNSET:
+                event["nickname"] = nickname
+            self._apply_locked(event)
+            return self._public_view(self._accounts[account_id])
+
     def verify_login(self, identifier: str, password: str) -> dict | None:
         """Return the public account view when credentials match, else None."""
         with self._lock:
@@ -196,6 +232,7 @@ class AccountStore:
             "account_id": record["account_id"],
             "email": record.get("email"),
             "wallet": record.get("wallet"),
+            "nickname": record.get("nickname"),
             "role": record["role"],
             "created_ts": record.get("ts", 0.0),
         }
@@ -249,11 +286,19 @@ class AccountStore:
                 "role": event.get("role", "user"),
                 "password_hash": event["password_hash"],
                 "salt": event["salt"],
+                "nickname": event.get("nickname"),
                 "ts": float(event.get("ts", 0.0)),
             }
             self._accounts[account_id] = record
             for identifier in filter(None, (record["email"], record["wallet"])):
                 self._by_identifier.setdefault(identifier.lower(), account_id)
+        elif etype == "update_profile":
+            account_id = event["account_id"]
+            record = self._accounts.get(account_id)
+            if record is None:
+                return
+            if "nickname" in event:
+                record["nickname"] = event.get("nickname")
         elif etype == "create_key":
             api_key = event["api_key"]
             if api_key not in self._revoked_keys:
diff --git a/packages/tracker/meshnet_tracker/billing.py b/packages/tracker/meshnet_tracker/billing.py
index 0a87865..d3e9442 100644
--- a/packages/tracker/meshnet_tracker/billing.py
+++ b/packages/tracker/meshnet_tracker/billing.py
@@ -453,13 +453,12 @@ class BillingLedger:
         with self._lock:
             return self._node_pending.get(wallet, 0.0)
 
-    def usage_for(self, api_keys: list[str], *, recent_limit: int | None = None) -> dict:
-        """Aggregate charge history for a set of API keys (dashboard view)."""
+    def usage_totals_for(self, api_keys: list[str]) -> dict:
+        """Aggregate charge totals without per-request records (dashboard summary)."""
         keys = set(api_keys)
         requests = 0
         total_tokens = 0
         total_cost = 0.0
-        records: list[dict] = []
         with self._lock:
             for event in self._event_log:
                 if event.get("type") != "charge" or event.get("api_key") not in keys:
@@ -467,6 +466,20 @@ class BillingLedger:
                 requests += 1
                 total_tokens += int(event.get("total_tokens", 0))
                 total_cost += float(event.get("cost", 0.0))
+        return {
+            "requests": requests,
+            "total_tokens": total_tokens,
+            "total_cost": total_cost,
+        }
+
+    def usage_for(self, api_keys: list[str], *, recent_limit: int | None = None) -> dict:
+        """Aggregate charge history for a set of API keys (dashboard view)."""
+        keys = set(api_keys)
+        records: list[dict] = []
+        with self._lock:
+            for event in self._event_log:
+                if event.get("type") != "charge" or event.get("api_key") not in keys:
+                    continue
                 records.append({
                     "api_key": event["api_key"],
                     "model": event.get("model"),
@@ -476,9 +489,9 @@ class BillingLedger:
                 })
         recent = records[-recent_limit:] if recent_limit is not None else records
         return {
-            "requests": requests,
-            "total_tokens": total_tokens,
-            "total_cost": total_cost,
+            "requests": len(records),
+            "total_tokens": sum(int(r.get("total_tokens", 0)) for r in records),
+            "total_cost": sum(float(r.get("cost", 0.0)) for r in records),
             "records": records,
             "recent": recent,
         }
diff --git a/packages/tracker/meshnet_tracker/dashboard.html b/packages/tracker/meshnet_tracker/dashboard.html
index bf82ea9..ea30ac6 100644
--- a/packages/tracker/meshnet_tracker/dashboard.html
+++ b/packages/tracker/meshnet_tracker/dashboard.html
@@ -219,6 +219,7 @@
   <h1>meshnet tracker</h1>
   <span class="meta" id="self-url"></span>
   <span class="meta" id="refreshed"></span>
+  <button class="small" id="refresh-btn" type="button" onclick="refreshActiveTab(true)" style="margin-left:auto">refresh</button>
 </header>
 <nav class="dashboard-tabs" aria-label="Dashboard sections">
   <button id="tab-overview" class="active" onclick="switchDashboardTab('overview')">Overview</button>
@@ -277,9 +278,44 @@ const esc = s => String(s).replace(/[&<>"]/g,
 const usdt = v => (Math.round(v * 1e6) / 1e6).toFixed(6);
 const tps = v => (v === null || v === undefined) ? "?" : (Math.round(v * 10) / 10).toFixed(1);
 const copies = v => (v === null || v === undefined) ? "?" : Number(v).toFixed(2);
-const hp = v => (v === null || v === undefined) ? "?HP" : `${Number(v).toFixed(1)}HP`;
+const hp = v => (v === null || v === undefined) ? "?HP" : `${copies(v)}HP`;
 const short = (s, n=14) => { s = String(s); return s.length > n ? s.slice(0, 6) + "…" + s.slice(-5) : s; };
 
+function accountDisplayName(account) {
+  if (!account) return "?";
+  const nickname = (account.nickname || "").trim();
+  if (nickname) return nickname;
+  return account.email || account.wallet || account.account_id || "?";
+}
+
+function buildNodeNameMap(map) {
+  const byId = new Map();
+  for (const node of (map && map.nodes) || []) {
+    const name = (node.friendly_name || "").trim();
+    if (node.node_id && name) byId.set(node.node_id, name);
+  }
+  return byId;
+}
+
+function nodeDisplayName(nodeOrId, nameMap) {
+  if (nodeOrId && typeof nodeOrId === "object") {
+    const friendly = (nodeOrId.friendly_name || "").trim();
+    if (friendly) return friendly;
+    return short(nodeOrId.node_id || "?");
+  }
+  const friendly = nameMap && nameMap.get(nodeOrId);
+  return friendly || short(nodeOrId || "?");
+}
+
+function nodeDisplayCell(node) {
+  const label = esc(nodeDisplayName(node));
+  const friendly = (node.friendly_name || "").trim();
+  if (friendly && node.node_id) {
+    return `<span title="${esc(node.node_id)}">${label}</span>`;
+  }
+  return label;
+}
+
 function modelAliasKey(value) {
   if (!value) return "";
   const text = String(value).trim();
@@ -317,6 +353,102 @@ function resolveModelGroup(node, aliasMap) {
   return aliasMap.get(key) || key || "?";
 }
 
+function modelLookupKeys(model) {
+  const keys = new Set();
+  for (const value of [model.id, model.name, model.hf_repo, ...(model.aliases || [])]) {
+    if (!value) continue;
+    keys.add(String(value));
+    keys.add(modelAliasKey(value));
+  }
+  return keys;
+}
+
+function modelServedCopiesFromMap(map, model) {
+  const nodes = (map && map.nodes) || [];
+  if (!nodes.length) return model.servedCopies ?? 0;
+  const aliasMap = buildModelAliasMap(map);
+  const targetKeys = modelLookupKeys(model);
+  let best = model.servedCopies ?? 0;
+  for (const node of nodes) {
+    const nodeKeys = [resolveModelGroup(node, aliasMap), node.hf_repo, node.model]
+      .filter(Boolean)
+      .flatMap(value => [String(value), modelAliasKey(value)]);
+    if (!nodeKeys.some(key => targetKeys.has(key))) continue;
+    const served = node.model_supply && node.model_supply.served_model_copies;
+    if (served !== null && served !== undefined) best = Math.max(best, served);
+  }
+  return best;
+}
+
+const panelSig = {};
+let pendingChatModelRefresh = false;
+
+function stableSig(value) {
+  return JSON.stringify(value);
+}
+
+function renderIfChanged(panelId, data, renderFn) {
+  const sig = stableSig(data);
+  if (panelSig[panelId] === sig) return false;
+  panelSig[panelId] = sig;
+  renderFn(data);
+  return true;
+}
+
+function isEditing(idOrEl) {
+  const el = typeof idOrEl === "string" ? $(idOrEl) : idOrEl;
+  if (!el) return false;
+  const active = document.activeElement;
+  return active === el || (active && el.contains(active));
+}
+
+function refreshBlocked() {
+  return selectionActive()
+    || chatBusy
+    || isEditing("account-nickname")
+    || isEditing("chat-prompt")
+    || isEditing("chat-model");
+}
+
+function syncKeyedList(container, items, keyFn, sigFn, createFn, patchFn) {
+  if (!container) return;
+  const sig = stableSig(items.map(item => sigFn(item)));
+  if (container.dataset.listSig === sig) return;
+  container.dataset.listSig = sig;
+  if (!items.length) {
+    container.className = "chat-session-list empty-state";
+    container.replaceChildren(document.createTextNode("No chats yet"));
+    return;
+  }
+  container.className = "chat-session-list";
+  const existing = new Map();
+  for (const child of container.querySelectorAll("[data-session-id]")) {
+    existing.set(child.dataset.sessionId, child);
+  }
+  const seen = new Set();
+  for (const item of items) {
+    const key = keyFn(item);
+    seen.add(key);
+    let el = existing.get(key);
+    if (!el) {
+      el = createFn(item);
+    } else {
+      patchFn(el, item);
+    }
+    container.appendChild(el);
+  }
+  for (const [key, el] of existing) {
+    if (!seen.has(key)) el.remove();
+  }
+}
+
+function chatModelsSignature() {
+  return availableModels.map(model => ({
+    id: model.id,
+    label: chatModelOptionLabel(model, lastRouting),
+  }));
+}
+
 async function fetchJson(path) {
   try {
     const headers = {};
@@ -371,7 +503,7 @@ function renderNodes(map) {
     html += table(["node", "shard", "tps (1h)", "queue", "served"], group.map(n => {
       const modelStats = (n.throughput && (n.throughput[n.hf_repo] || n.throughput[n.model])) || {};
       return [
-      esc(short(n.node_id || "?")),
+      nodeDisplayCell(n),
       esc(`${n.shard_start ?? "?"}-${n.shard_end ?? "?"}`),
       `<span class="num">${esc(tps(modelStats.tokens_per_sec_last_hour))}</span>`,
       esc(String((n.stats && n.stats.queue_depth) ?? 0)),
@@ -448,11 +580,12 @@ function renderStats(stats) {
 
 function renderThroughputHtml(stats) {
   const nodes = (stats && stats.nodes) || {};
+  const nameMap = buildNodeNameMap(lastNetworkMap);
   const rows = [];
   for (const [nodeId, nodeStats] of Object.entries(nodes)) {
     for (const [model, s] of Object.entries((nodeStats && nodeStats.models) || {})) {
       rows.push([
-        esc(short(nodeId)),
+        esc(nodeDisplayName(nodeId, nameMap)),
         esc(short(model, 24)),
         `<span class="num">${esc(tps(s.tokens_per_sec_last_hour))}</span>`,
         `<span class="num">${esc(String(s.sample_count_last_hour ?? 0))}</span>`,
@@ -585,6 +718,7 @@ function renderRouting(routing) {
     return;
   }
   const cfg = (routing && routing.config) || {};
+  const nameMap = buildNodeNameMap(lastNetworkMap);
   let html = `<div class="dim" style="margin-bottom:6px">` +
     `explore share: <b>${esc(String(cfg.explore_share ?? "?"))}</b> · ` +
     `traffic ∝ tps^<b>${esc(String(cfg.weight_alpha ?? "?"))}</b> · ` +
@@ -594,7 +728,7 @@ function renderRouting(routing) {
     html += `<div style="margin-top:6px"><b>${esc(model)}</b> ` +
       `<span class="dim">(epoch ${esc(String(info.epoch ?? 0))} · ${routes.length} route${routes.length === 1 ? "" : "s"})</span></div>`;
     html += table(["route", "tps", "coeff", "share", "samples", "status"], routes.map(r => {
-      const hops = (r.hops || []).map(h => `${short(h.node_id, 12)}[${h.shard}]`).join(" → ");
+      const hops = (r.hops || []).map(h => `${nodeDisplayName(h.node_id, nameMap)}[${h.shard}]`).join(" → ");
       const statusCls = r.status === "proven" ? "ok" : r.status === "stale" ? "warn" : "dim";
       const coeff = (r.coefficient === null || r.coefficient === undefined)
         ? "—" : Number(r.coefficient).toFixed(2) + "×";
@@ -833,6 +967,7 @@ let accountApiKeys = [];
 let accountUsageRecords = [];
 let lastStats = null;
 let lastRouting = null;
+let lastNetworkMap = null;
 let availableModels = [];
 let chatHistory = [];
 let chatBusy = false;
@@ -932,7 +1067,7 @@ function createNewChatSession() {
   clearChatPrompt();
   saveChatSessionsStore();
   renderChatSessionList();
-  renderChatHistory();
+  renderChatHistory(true);
   renderChatAuthHint();
   const promptEl = $("chat-prompt");
   if (promptEl) promptEl.focus();
@@ -954,7 +1089,7 @@ function selectChatSession(sessionId) {
   }
   localStorage.setItem(CHAT_ACTIVE_SESSION_KEY, activeChatSessionId);
   renderChatSessionList();
-  renderChatHistory();
+  renderChatHistory(true);
   renderChatAuthHint();
 }
 
@@ -980,7 +1115,7 @@ function deleteChatSession(sessionId) {
   }
   saveChatSessionsStore();
   renderChatSessionList();
-  renderChatHistory();
+  renderChatHistory(true);
   renderChatModels();
 }
 
@@ -1002,31 +1137,54 @@ function initChatSessions() {
     if (active.model) selectedChatModel = active.model;
   }
   renderChatSessionList();
-  renderChatHistory();
+  renderChatHistory(true);
 }
 
 function renderChatSessionList() {
   const list = $("chat-session-list");
-  if (!list) return;
-  if (!chatSessions.length) {
-    list.className = "chat-session-list empty-state";
-    list.innerHTML = "No chats yet";
-    return;
+  syncKeyedList(
+    list,
+    chatSessions,
+    session => session.id,
+    session => `${session.id}|${session.updatedAt || ""}|${chatSessionTitle(session)}|${session.id === activeChatSessionId}`,
+    createSessionRowElement,
+    patchSessionRowElement,
+  );
+}
+
+function createSessionRowElement(session) {
+  const el = document.createElement("div");
+  el.className = "chat-session-item";
+  el.dataset.sessionId = session.id;
+  el.setAttribute("role", "button");
+  el.tabIndex = 0;
+  const title = document.createElement("div");
+  title.className = "chat-session-title";
+  const meta = document.createElement("div");
+  meta.className = "chat-session-meta";
+  const del = document.createElement("button");
+  del.type = "button";
+  del.className = "chat-session-delete";
+  del.title = "Delete chat";
+  del.dataset.deleteSession = session.id;
+  del.textContent = "×";
+  el.append(title, meta, del);
+  patchSessionRowElement(el, session);
+  return el;
+}
+
+function patchSessionRowElement(el, session) {
+  el.classList.toggle("active", session.id === activeChatSessionId);
+  el.querySelector(".chat-session-title").textContent = chatSessionTitle(session);
+  const when = formatSessionTime(session.updatedAt || session.createdAt);
+  const meta = el.querySelector(".chat-session-meta");
+  if (when) {
+    meta.textContent = when;
+    meta.hidden = false;
+  } else {
+    meta.textContent = "";
+    meta.hidden = true;
   }
-  list.className = "chat-session-list";
-  list.innerHTML = chatSessions.map(session => {
-    const active = session.id === activeChatSessionId ? " active" : "";
-    const title = esc(chatSessionTitle(session));
-    const when = esc(formatSessionTime(session.updatedAt || session.createdAt));
-    const sessionId = esc(session.id);
-    return `<div class="chat-session-item${active}" role="button" tabindex="0"` +
-      ` data-session-id="${sessionId}">` +
-      `<div class="chat-session-title">${title}</div>` +
-      (when ? `<div class="chat-session-meta">${when}</div>` : "") +
-      `<button type="button" class="chat-session-delete" title="Delete chat"` +
-      ` data-delete-session="${sessionId}">×</button>` +
-      `</div>`;
-  }).join("");
 }
 
 function bindChatSessionList() {
@@ -1069,6 +1227,7 @@ function switchDashboardTab(name) {
     const promptEl = $("chat-prompt");
     if (promptEl) promptEl.focus();
   }
+  refreshActiveTab(true);
 }
 
 function updateSectionVisibility() {
@@ -1084,22 +1243,33 @@ function renderChatStatus(text) {
   $("chat-status").textContent = text;
 }
 
-function renderChatHistory() {
+function renderChatHistory(force) {
   const history = $("chat-history");
   if (!history) return;
+  if (!force && chatHistory.some(msg => msg.streaming)) return;
   if (!chatHistory.length) {
+    if (history.dataset.historySig === "empty") return;
+    history.dataset.historySig = "empty";
     history.className = "chat-messages empty";
     history.innerHTML = '<div class="chat-messages-inner">Send a message to start this conversation.</div>';
     return;
   }
+  const sig = stableSig(chatHistory.map(msg => ({
+    role: msg.role,
+    content: msg.content,
+    streaming: Boolean(msg.streaming),
+  })));
+  if (!force && history.dataset.historySig === sig) return;
+  history.dataset.historySig = sig;
   history.className = "chat-messages";
+  const nearBottom = history.scrollHeight - history.scrollTop - history.clientHeight < 80;
   const rows = chatHistory.map(msg => {
     const role = msg.role === "user" ? "user" : msg.role === "assistant" ? "assistant" : "error";
     const streaming = msg.streaming ? " streaming" : "";
     return `<div class="chat-row ${role}"><div class="chat-bubble ${role}${streaming}">${esc(msg.content)}</div></div>`;
   }).join("");
   history.innerHTML = `<div class="chat-messages-inner">${rows}</div>`;
-  history.scrollTop = history.scrollHeight;
+  if (nearBottom || force) history.scrollTop = history.scrollHeight;
 }
 
 function findRoutingForModel(model, routing) {
@@ -1140,9 +1310,17 @@ function chatModelOptionLabel(model, routing) {
   return `${base} · ${health} · ${speedText}${suffix}`;
 }
 
-function renderChatModels() {
+function renderChatModels(force) {
   const select = $("chat-model");
   if (!select) return;
+  const sig = stableSig(chatModelsSignature());
+  if (!force && panelSig.chatModels === sig) return;
+  if (!force && isEditing(select)) {
+    pendingChatModelRefresh = true;
+    return;
+  }
+  pendingChatModelRefresh = false;
+  panelSig.chatModels = sig;
   const models = availableModels.slice();
   if (!models.length) {
     select.innerHTML = '<option value="">no models available</option>';
@@ -1161,6 +1339,15 @@ function renderChatModels() {
   select.value = selectedChatModel;
 }
 
+function bindChatModelSelect() {
+  const select = $("chat-model");
+  if (!select || select.dataset.bound) return;
+  select.dataset.bound = "1";
+  select.addEventListener("blur", () => {
+    if (pendingChatModelRefresh) renderChatModels(true);
+  });
+}
+
 function selectChatModel(value) {
   selectedChatModel = value || "";
   localStorage.setItem("meshnet_chat_model", selectedChatModel);
@@ -1231,7 +1418,8 @@ function renderAuthForms(errorMsg) {
     `<a class="${authTab === name ? "active" : ""}" onclick="switchAuthTab('${name}')">${label}</a>`;
   const identityFields =
     '<input id="auth-email" type="email" placeholder="email (or leave blank)">' +
-    '<input id="auth-wallet" type="text" placeholder="wallet address (or leave blank)">';
+    '<input id="auth-wallet" type="text" placeholder="wallet address (or leave blank)">' +
+    '<input id="auth-nickname" type="text" placeholder="nickname (optional)">';
   const form = authTab === "login"
     ? '<input id="auth-identifier" type="text" placeholder="email or wallet address">' +
       '<input id="auth-password" type="password" placeholder="password">' +
@@ -1253,12 +1441,14 @@ function switchAuthTab(name) { authTab = name; renderAuthForms(); }
 async function doRegister() {
   const email = $("auth-email").value.trim();
   const wallet = $("auth-wallet").value.trim();
+  const nickname = $("auth-nickname").value.trim();
   const password = $("auth-password").value;
   const r = await apiCall("/v1/auth/register", "POST",
-    { email: email || null, wallet: wallet || null, password });
+    { email: email || null, wallet: wallet || null, nickname: nickname || null, password });
   if (!r.ok) { renderAuthForms(r.data.error || "registration failed"); return; }
   setSession(r.data.session_token);
-  await renderAccountPanel();
+  await loadAccountSummary(true);
+  await refreshActiveTab(true);
 }
 
 async function doLogin() {
@@ -1267,7 +1457,8 @@ async function doLogin() {
   const r = await apiCall("/v1/auth/login", "POST", { identifier, password });
   if (!r.ok) { renderAuthForms(r.data.error || "login failed"); return; }
   setSession(r.data.session_token);
-  await renderAccountPanel();
+  await loadAccountSummary(true);
+  await refreshActiveTab(true);
 }
 
 async function doLogout() {
@@ -1278,19 +1469,19 @@ async function doLogout() {
 
 async function createKey() {
   const r = await apiCall("/v1/account/keys", "POST", {});
-  if (r.ok) await renderAccountPanel();
+  if (r.ok) await loadAccountSummary(true);
 }
 
 async function revokeKey(key) {
   if (!confirm("Revoke this API key? Clients using it will stop working.")) return;
   await apiCall("/v1/account/keys/revoke", "POST", { api_key: key });
-  await renderAccountPanel();
+  await loadAccountSummary(true);
 }
 
 async function topupKey(key) {
   const r = await apiCall("/v1/account/topup", "POST", { api_key: key });
   if (!r.ok) alert(r.data.error || "top-up failed");
-  await renderAccountPanel();
+  await loadAccountSummary(true);
 }
 
 const COPY_TOOLTIP_MS = 2000;
@@ -1354,54 +1545,112 @@ function renderChatAuthHint() {
   }
 }
 
-async function renderAccountPanel() {
+let accountTopupAmount = 0;
+
+function buildAccountPanelShell() {
+  $("account").innerHTML =
+    `<div id="account-panel-root">` +
+    `<div><b data-bind="who"></b> <span class="pill" data-bind="role"></span> ` +
+    `<button class="small" style="float:right" onclick="doLogout()">log out</button></div>` +
+    `<div style="margin:6px 0;display:flex;gap:8px;align-items:center;flex-wrap:wrap">` +
+    `<label class="dim" style="margin:0">nickname</label>` +
+    `<input id="account-nickname" type="text" placeholder="display name" style="min-width:180px">` +
+    `<button class="small" type="button" onclick="saveNickname()">save</button></div>` +
+    `<div style="margin:6px 0">balance: <b data-bind="balance"></b> USDT · requests: <b data-bind="requests"></b> · ` +
+    `tokens: <b data-bind="tokens"></b> · spent: <b data-bind="spent"></b> USDT</div>` +
+    `<div style="margin:6px 0"><b class="dim">API keys</b> ` +
+    `<button class="small" onclick="createKey()">+ new key</button></div>` +
+    `<div id="account-keys"></div></div>`;
+}
+
+function renderAccountKeys(api_keys, balances, topup_amount) {
+  const el = $("account-keys");
+  if (!el) return;
+  if (!api_keys.length) {
+    el.innerHTML = '<div class="empty">no active keys</div>';
+    return;
+  }
+  let html = "";
+  for (const key of api_keys) {
+    html += `<div class="keybox">` +
+      `<span class="key-text" data-key="${esc(key)}" onclick="selectApiKeyText(this)" ondblclick="copyApiKeyFromTextEl(this)">${esc(key)}</span>` +
+      `<span class="dim">(${usdt(balances[key] ?? 0)} USDT)</span>` +
+      `<button class="small" type="button" onclick="copyApiKeyFromButton(this)">copy</button>` +
+      (topup_amount > 0
+        ? ` <button class="small" onclick="topupKey('${esc(key)}')">+${usdt(topup_amount)} (devnet)</button>`
+        : "") +
+      ` <button class="small" onclick="revokeKey('${esc(key)}')">revoke</button></div>`;
+  }
+  el.innerHTML = html;
+}
+
+function patchAccountPanelView(account, api_keys, balances, total_balance, usage, topup_amount) {
+  const root = $("account-panel-root");
+  if (!root) return false;
+  accountTopupAmount = topup_amount || 0;
+  root.querySelector('[data-bind="who"]').textContent = accountDisplayName(account);
+  root.querySelector('[data-bind="role"]').textContent = account.role;
+  const bal = root.querySelector('[data-bind="balance"]');
+  bal.textContent = usdt(total_balance);
+  bal.className = total_balance > 0 ? "ok" : "bad";
+  root.querySelector('[data-bind="requests"]').textContent = String(usage.requests);
+  root.querySelector('[data-bind="tokens"]').textContent = String(usage.total_tokens);
+  root.querySelector('[data-bind="spent"]').textContent = usdt(usage.total_cost);
+  const nick = $("account-nickname");
+  if (nick && !isEditing(nick)) nick.value = account.nickname || "";
+  renderIfChanged("account-keys", { api_keys, balances, topup_amount }, data => {
+    renderAccountKeys(data.api_keys, data.balances, data.topup_amount);
+  });
+  return true;
+}
+
+async function saveNickname() {
+  const nickname = $("account-nickname").value.trim();
+  const r = await apiCall("/v1/account/profile", "POST", { nickname: nickname || null });
+  if (!r.ok) alert(r.data.error || "nickname update failed");
+  else await loadAccountSummary(true);
+}
+
+function applyAccountSummary(data, force) {
+  const { account, api_keys, balances, total_balance, usage, topup_amount } = data;
+  accountApiKeys = Array.isArray(api_keys) ? api_keys.slice() : [];
+  if (force || !patchAccountPanelView(account, api_keys, balances, total_balance, usage, topup_amount)) {
+    buildAccountPanelShell();
+    patchAccountPanelView(account, api_keys, balances, total_balance, usage, topup_amount);
+  }
+  renderChatAuthHint();
+  setLoggedInMode(true);
+  setAdminMode(account.role === "admin");
+}
+
+async function loadAccountSummary(force) {
   const r = await apiCall("/v1/account");
-  if (r.status === 404) {  // accounts disabled on this tracker
+  if (r.status === 404) {
     $("account-section").style.display = "none";
     accountApiKeys = [];
     accountUsageRecords = [];
     renderChatAuthHint();
     setLoggedInMode(false);
     setAdminMode(false);
-    return;
+    return false;
   }
-  if (!r.ok) { setSession(null); renderAuthForms(); return; }
-  const { account, api_keys, balances, total_balance, usage, topup_amount } = r.data;
-  accountApiKeys = Array.isArray(api_keys) ? api_keys.slice() : [];
-  accountUsageRecords = (usage && (usage.records || usage.recent)) || [];
-  const who = account.email || account.wallet || account.account_id;
-  let html =
-    `<div><b>${esc(who)}</b> <span class="pill">${esc(account.role)}</span> ` +
-    `<button class="small" style="float:right" onclick="doLogout()">log out</button></div>` +
-    `<div style="margin:6px 0">balance: <b class="${total_balance > 0 ? "ok" : "bad"}">` +
-    `${usdt(total_balance)}</b> USDT · requests: <b>${usage.requests}</b> · ` +
-    `tokens: <b>${usage.total_tokens}</b> · spent: <b>${usdt(usage.total_cost)}</b> USDT</div>`;
-  html += '<div style="margin:6px 0"><b class="dim">API keys</b> ' +
-    '<button class="small" onclick="createKey()">+ new key</button></div>';
-  if (api_keys.length) {
-    for (const key of api_keys) {
-      html += `<div class="keybox">` +
-        `<span class="key-text" data-key="${esc(key)}" onclick="selectApiKeyText(this)" ondblclick="copyApiKeyFromTextEl(this)">${esc(key)}</span>` +
-        `<span class="dim">(${usdt(balances[key] ?? 0)} USDT)</span>` +
-        `<button class="small" type="button" onclick="copyApiKeyFromButton(this)">copy</button>` +
-        (topup_amount > 0
-          ? ` <button class="small" onclick="topupKey('${esc(key)}')">+${usdt(topup_amount)} (devnet)</button>`
-          : "") +
-        ` <button class="small" onclick="revokeKey('${esc(key)}')">revoke</button></div>`;
-    }
-  } else {
-    html += '<div class="empty">no active keys</div>';
-  }
-  $("account").innerHTML = html;
-  renderUsageSummary(accountUsageRecords);
-  renderNodeThroughput(lastStats);
-  renderBillingUsage(accountUsageRecords);
-  renderChatAuthHint();
-  renderChatModels();
-  renderChatHistory();
-  setLoggedInMode(true);
-  setAdminMode(account.role === "admin");
-  if (account.role === "admin") await renderAdminPanel();
+  if (!r.ok) { setSession(null); renderAuthForms(); return false; }
+  applyAccountSummary(r.data, force);
+  if (dashboardTab === "chat" && !refreshBlocked()) renderChatModels(force);
+  return true;
+}
+
+async function loadAccountUsage() {
+  const r = await apiCall("/v1/account/usage");
+  if (!r.ok) return;
+  accountUsageRecords = (r.data.records || r.data.recent) || [];
+  renderIfChanged("usage-summary", accountUsageRecords, () => renderUsageSummary(accountUsageRecords));
+  renderIfChanged("billing-usage", accountUsageRecords, () => renderBillingUsage(accountUsageRecords));
+}
+
+/** @deprecated use loadAccountSummary */
+async function renderAccountPanel(force) {
+  return loadAccountSummary(force);
 }
 
 let chatAbortController = null;
@@ -1423,7 +1672,7 @@ function updateStreamingChatBubble(content) {
   if (!history) return;
   const bubbles = history.querySelectorAll(".chat-bubble.assistant.streaming");
   const bubble = bubbles[bubbles.length - 1];
-  if (!bubble) { renderChatHistory(); return; }
+  if (!bubble) { renderChatHistory(true); return; }
   bubble.textContent = content;
   const nearBottom = history.scrollHeight - history.scrollTop - history.clientHeight < 80;
   if (nearBottom) history.scrollTop = history.scrollHeight;
@@ -1433,7 +1682,7 @@ function finalizeAssistantMessage(msg) {
   delete msg.streaming;
   if (!chatHistory.includes(msg)) chatHistory.push(msg);
   if (!msg.content) msg.content = "(empty response)";
-  renderChatHistory();
+  renderChatHistory(true);
   persistActiveChatSession();
 }
 
@@ -1441,7 +1690,7 @@ function removeAssistantMessage(msg) {
   const index = chatHistory.indexOf(msg);
   if (index >= 0) {
     chatHistory.splice(index, 1);
-    renderChatHistory();
+    renderChatHistory(true);
   }
 }
 
@@ -1472,7 +1721,7 @@ async function sendChat() {
   chatHistory.push({ role: "user", content: prompt, model: selectedChatModel });
   const assistantMessage = { role: "assistant", content: "", model: selectedChatModel, streaming: true };
   chatHistory.push(assistantMessage);
-  renderChatHistory();
+  renderChatHistory(true);
   persistActiveChatSession();
   renderChatStatus("sending request…");
   let tokens = 0;
@@ -1555,7 +1804,7 @@ async function sendChat() {
       removeAssistantMessage(assistantMessage);
       const error = (err && err.message) || "request failed";
       chatHistory.push({ role: "error", content: error, model: selectedChatModel });
-      renderChatHistory();
+      renderChatHistory(true);
       persistActiveChatSession();
       renderChatStatus(error);
     }
@@ -1583,29 +1832,13 @@ function bindChatPromptShortcuts() {
   });
 }
 
-async function renderAdminPanel() {
-  const r = await apiCall("/v1/admin/accounts");
-  if (!r.ok) { setAdminMode(false); return; }
-  const rows = (r.data.accounts || []).map(a => {
-    const balance = Object.values(a.balances || {}).reduce((x, y) => x + y, 0);
-    return [
-      esc(short(a.email || a.wallet || a.account_id, 24)),
-      `<span class="pill">${esc(a.role)}</span>`,
-      String((a.api_keys || []).length),
-      `<span class="num ${balance > 0 ? "ok" : "bad"}">${usdt(balance)}</span>`,
-      new Date(a.created_ts * 1000).toLocaleDateString(),
-    ];
-  });
-  $("admin").innerHTML = table(["account", "role", "keys", "balance (USDT)", "created"], rows);
-}
-
 async function cancelProxyRequest(requestId) {
   const r = await apiCall(
     `/v1/proxy/requests/${encodeURIComponent(requestId)}/cancel`,
     "POST",
     {},
   );
-  if (r.ok) refresh();
+  if (r.ok) await refreshCallWall();
 }
 
 $("call-wall").addEventListener("click", (event) => {
@@ -1616,74 +1849,166 @@ $("call-wall").addEventListener("click", (event) => {
   if (requestId) cancelProxyRequest(requestId);
 });
 
-async function refresh() {
-  $("self-url").textContent = location.host;
-  const [raft, map, stats, models, consoleData, routing, adminData] = await Promise.all([
-    fetchJson("/v1/raft/status"),
-    fetchJson("/v1/network/map"),
-    fetchJson("/v1/stats"),
-    fetchJson("/v1/models"),
-    fetchJson("/v1/console"),
-    fetchJson("/v1/routing"),
-    isAdmin ? Promise.all([
-      fetchJson("/v1/billing/summary"),
-      fetchJson("/v1/billing/settlements"),
-      fetchJson("/v1/registry/wallets"),
-    ]) : Promise.resolve([null, null, null]),
-  ]);
-  const [summary, settlements, wallets] = adminData;
-  lastStats = stats;
-  lastRouting = routing;
-  availableModels = ((models && models.data) || []).map(model => ({
-    id: model.id,
-    name: model.name || model.id,
-    hf_repo: model.hf_repo,
-    recommended: Boolean(model.recommended),
-    aliases: model.aliases || [],
-    coverage: model.shard_coverage_percentage,
-    servedCopies: model.served_model_copies,
-  })).filter(model => model.id);
-  renderHive(raft);
-  renderNodes(map);
-  renderBilling(summary);
-  renderSettlements(settlements);
-  renderFraud(wallets, summary);
-  renderStats(stats);
-  renderRouting(routing);
-  renderCallWall(consoleData, stats, map);
-  renderConsole(consoleData);
-  renderNodeThroughput(stats);
-  renderChatModels();
-  renderChatHistory();
+function applyAvailableModels(models, map) {
+  lastNetworkMap = map || lastNetworkMap;
+  availableModels = ((models && models.data) || []).map(model => {
+    const entry = {
+      id: model.id,
+      name: model.name || model.id,
+      hf_repo: model.hf_repo,
+      recommended: Boolean(model.recommended),
+      aliases: model.aliases || [],
+      coverage: model.shard_coverage_percentage,
+      servedCopies: model.served_model_copies,
+    };
+    entry.servedCopies = modelServedCopiesFromMap(lastNetworkMap, entry);
+    return entry;
+  }).filter(model => model.id);
+}
+
+function markRefreshed() {
   $("refreshed").textContent = "refreshed " + new Date().toLocaleTimeString();
 }
 
-const REFRESH_MS = 10000;
+async function fetchOverviewTab() {
+  const fetches = [
+    fetchJson("/v1/raft/status"),
+    fetchJson("/v1/network/map"),
+    fetchJson("/v1/stats"),
+    fetchJson("/v1/routing"),
+    fetchJson("/v1/console"),
+  ];
+  if (isLoggedIn) fetches.push(apiCall("/v1/account"));
+  const results = await Promise.all(fetches);
+  const [raft, map, stats, routing, consoleData, accountResp] = results;
+  lastStats = stats;
+  lastRouting = routing;
+  lastNetworkMap = map;
+  if (accountResp && accountResp.ok) applyAccountSummary(accountResp.data, false);
+  renderIfChanged("hive", raft, renderHive);
+  renderIfChanged("nodes", map, renderNodes);
+  renderIfChanged("stats", stats, renderStats);
+  renderIfChanged("routing", routing, renderRouting);
+  renderIfChanged("call-wall", { consoleData, stats, map }, data => renderCallWall(data.consoleData, data.stats, data.map));
+}
+
+async function fetchChatTab() {
+  const fetches = [
+    fetchJson("/v1/network/map"),
+    fetchJson("/v1/models"),
+    fetchJson("/v1/routing"),
+  ];
+  if (isLoggedIn) fetches.push(apiCall("/v1/account"));
+  const [map, models, routing, accountResp] = await Promise.all(fetches);
+  lastRouting = routing;
+  applyAvailableModels(models, map);
+  if (accountResp && accountResp.ok) applyAccountSummary(accountResp.data, false);
+  if (!refreshBlocked()) {
+    renderChatModels(true);
+  } else {
+    pendingChatModelRefresh = true;
+  }
+}
+
+async function fetchBillingTab() {
+  const [stats, , accountResp, adminData] = await Promise.all([
+    fetchJson("/v1/stats"),
+    loadAccountUsage(),
+    isLoggedIn ? apiCall("/v1/account") : Promise.resolve(null),
+    isAdmin ? Promise.all([
+      fetchJson("/v1/billing/summary"),
+      fetchJson("/v1/billing/settlements"),
+    ]) : Promise.resolve(null),
+  ]);
+  lastStats = stats;
+  if (accountResp && accountResp.ok) applyAccountSummary(accountResp.data, false);
+  renderIfChanged("node-throughput", stats, renderNodeThroughput);
+  if (adminData) {
+    const [summary, settlements] = adminData;
+    renderIfChanged("billing-summary", summary, renderBilling);
+    renderIfChanged("settlements", settlements, renderSettlements);
+  }
+}
+
+async function fetchAdminTab() {
+  const fetches = [
+    fetchJson("/v1/console"),
+    fetchJson("/v1/billing/summary"),
+    fetchJson("/v1/registry/wallets"),
+  ];
+  if (isAdmin) fetches.push(apiCall("/v1/admin/accounts"));
+  const results = await Promise.all(fetches);
+  const [consoleData, summary, wallets, adminResp] = results;
+  renderIfChanged("console", consoleData, renderConsole);
+  renderIfChanged("billing-summary", summary, data => renderBilling(data));
+  renderIfChanged("fraud", { wallets, summary }, data => renderFraud(data.wallets, data.summary));
+  if (adminResp && adminResp.ok) {
+    renderIfChanged("admin", adminResp.data.accounts || [], accounts => {
+      const rows = accounts.map(a => {
+        const balance = Object.values(a.balances || {}).reduce((x, y) => x + y, 0);
+        return [
+          esc(short(accountDisplayName(a), 24)),
+          `<span class="pill">${esc(a.role)}</span>`,
+          String((a.api_keys || []).length),
+          `<span class="num ${balance > 0 ? "ok" : "bad"}">${usdt(balance)}</span>`,
+          new Date(a.created_ts * 1000).toLocaleDateString(),
+        ];
+      });
+      $("admin").innerHTML = table(["account", "role", "keys", "balance (USDT)", "created"], rows);
+    });
+  }
+}
+
+async function refreshCallWall() {
+  const [consoleData, map] = await Promise.all([
+    fetchJson("/v1/console"),
+    fetchJson("/v1/network/map"),
+  ]);
+  if (map) lastNetworkMap = map;
+  renderIfChanged("call-wall", { consoleData, stats: lastStats, map }, data =>
+    renderCallWall(data.consoleData, data.stats, data.map));
+}
+
+const TAB_FETCHERS = {
+  overview: fetchOverviewTab,
+  chat: fetchChatTab,
+  billing: fetchBillingTab,
+  admin: fetchAdminTab,
+};
+
+async function refreshActiveTab(force) {
+  $("self-url").textContent = location.host;
+  if (refreshBlocked() && !force) return;
+  const fetcher = TAB_FETCHERS[dashboardTab];
+  if (fetcher) await fetcher();
+  markRefreshed();
+}
+
+const CALL_WALL_POLL_MS = 5000;
+
+async function pollCallWallIfIdle() {
+  if (dashboardTab !== "overview" || refreshBlocked()) return;
+  await refreshCallWall();
+}
 
 function selectionActive() {
   const sel = window.getSelection();
   return sel && !sel.isCollapsed && sel.toString().length > 0;
 }
 
-async function refreshIfIdle() {
-  if (selectionActive()) return;
-  await refresh();
-}
-
-refresh();
 bindChatSessionList();
+bindChatModelSelect();
 initChatSessions();
 bindChatPromptShortcuts();
-renderAccountPanel();
-renderChatModels();
-renderChatHistory();
-renderChatAuthHint();
-setInterval(refreshIfIdle, REFRESH_MS);
-setInterval(() => {
-  if (!sessionToken && !isLoggedIn) return;
-  if (selectionActive()) return;
-  renderAccountPanel();
-}, REFRESH_MS);
+(async () => {
+  if (sessionToken) await loadAccountSummary(true);
+  else renderAuthForms();
+  await refreshActiveTab(true);
+  renderChatHistory(true);
+  renderChatAuthHint();
+  if (dashboardTab === "chat") renderChatModels(true);
+})();
+setInterval(pollCallWallIfIdle, CALL_WALL_POLL_MS);
 </script>
 </body>
 </html>
diff --git a/packages/tracker/meshnet_tracker/model_presets.json b/packages/tracker/meshnet_tracker/model_presets.json
index 40ee0ed..c2fd76b 100644
--- a/packages/tracker/meshnet_tracker/model_presets.json
+++ b/packages/tracker/meshnet_tracker/model_presets.json
@@ -39,6 +39,38 @@
         ]
       }
     },
+    "qwen2.5-0.5b-instruct": {
+      "layers_start": 0,
+      "layers_end": 23,
+      "hf_repo": "Qwen/Qwen2.5-0.5B-Instruct",
+      "aliases": [
+        "qwen2.5-0.5b",
+        "Qwen2.5-0.5B-Instruct",
+        "Qwen/Qwen2.5-0.5B-Instruct"
+      ],
+      "deployment_status": "supported",
+      "price_per_1k_tokens": 0.002,
+      "input_price_per_1k_tokens": 0.002,
+      "output_price_per_1k_tokens": 0.002,
+      "hf_aliases": [],
+      "hf_verified_match_note": "Static 10× dev-funding markup over ~$0.20/1M commercial API reference (Qwen-class hosted rates). $0.002/1k = $2/1M blended input+output.",
+      "required_model_bytes": 1056964608,
+      "download_size_bytes": 1056964608,
+      "native_quantization": "bfloat16",
+      "canonical_audit_dtype": "bfloat16",
+      "canonical_audit_quantization": "bfloat16",
+      "bytes_per_layer": {
+        "bfloat16": 44040192
+      },
+      "metadata": {
+        "architecture": "Dense transformer (GQA)",
+        "total_parameters": "0.5B",
+        "num_layers": 24,
+        "context_length": 32768,
+        "native_quantization": "bfloat16",
+        "download_size_gb": 1
+      }
+    },
     "qwen3.6-35b-a3b": {
       "layers_start": 0,
       "layers_end": 39,
diff --git a/packages/tracker/meshnet_tracker/server.py b/packages/tracker/meshnet_tracker/server.py
index c433da0..27ff134 100644
--- a/packages/tracker/meshnet_tracker/server.py
+++ b/packages/tracker/meshnet_tracker/server.py
@@ -570,7 +570,7 @@ class _NodeEntry:
         "benchmark_tokens_per_sec", "quantization", "managed_assignment",
         "model_tokens_per_sec",
         "pending_directives", "last_heartbeat", "tracker_mode",
-        "relay_addr", "cert_fingerprint", "peer_id",
+        "relay_addr", "cert_fingerprint", "peer_id", "friendly_name",
         # heartbeat stats (reported by node, cumulative)
         "total_requests", "failed_requests", "queue_depth", "proxy_inflight", "uptime_seconds",
         "current_requests",
@@ -606,6 +606,7 @@ class _NodeEntry:
         relay_addr: str | None = None,
         cert_fingerprint: str | None = None,
         peer_id: str | None = None,
+        friendly_name: str | None = None,
     ) -> None:
         self.node_id = node_id
         self.endpoint = endpoint
@@ -632,6 +633,7 @@ class _NodeEntry:
         self.relay_addr = relay_addr
         self.cert_fingerprint = cert_fingerprint
         self.peer_id = peer_id
+        self.friendly_name = friendly_name
         self.pending_directives: list[dict] = []
         self.last_heartbeat: float = time.monotonic()
         self.total_requests: int = 0
@@ -2231,6 +2233,22 @@ def _registration_ban_error(contracts: Any | None, wallet_address: str | None) -
     return None
 
 
+_MAX_FRIENDLY_NAME_LENGTH = 64
+
+
+def _normalize_friendly_name(value: object) -> str | None:
+    if value is None:
+        return None
+    if not isinstance(value, str):
+        raise ValueError("friendly_name must be a string")
+    name = value.strip()
+    if not name:
+        return None
+    if len(name) > _MAX_FRIENDLY_NAME_LENGTH:
+        raise ValueError(f"friendly_name must be at most {_MAX_FRIENDLY_NAME_LENGTH} characters")
+    return name
+
+
 def _tracker_log(
     server: "_TrackerHTTPServer",
     level: str,
@@ -2606,6 +2624,9 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
         if self.path == "/v1/auth/logout":
             self._handle_auth_logout()
             return
+        if self.path == "/v1/account/profile":
+            self._handle_account_profile()
+            return
         if self.path == "/v1/account/keys":
             self._handle_account_key_create()
             return
@@ -2686,6 +2707,8 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
             self._handle_billing_summary()
         elif parsed.path == "/v1/billing/settlements":
             self._handle_billing_settlements()
+        elif parsed.path == "/v1/account/usage":
+            self._handle_account_usage(parsed)
         elif parsed.path == "/v1/account":
             self._handle_account_me()
         elif parsed.path == "/v1/admin/accounts":
@@ -2923,6 +2946,7 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
             "nodes": [
                 {
                     "node_id": node.node_id,
+                    "friendly_name": node.friendly_name,
                     "endpoint": node.endpoint,
                     "relay_addr": node.relay_addr,
                     "peer_id": node.peer_id,
@@ -4001,6 +4025,11 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
         relay_addr = body.get("relay_addr") or None
         cert_fingerprint = body.get("cert_fingerprint") or None
         peer_id = body.get("peer_id") or None
+        try:
+            friendly_name = _normalize_friendly_name(body.get("friendly_name"))
+        except ValueError as exc:
+            self._send_json(400, {"error": str(exc)})
+            return
 
         node_id = _node_id_for_registration(
             endpoint,
@@ -4035,6 +4064,7 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
             relay_addr=relay_addr,
             cert_fingerprint=cert_fingerprint,
             peer_id=peer_id,
+            friendly_name=friendly_name,
         )
         with server.lock:
             self._purge_expired_nodes()
@@ -4053,6 +4083,12 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
             for eid in stale_ids:
                 old = server.registry.pop(eid)
                 stale_entries.append((eid, old))
+            if friendly_name is None:
+                for _eid, old in stale_entries:
+                    if old.friendly_name:
+                        friendly_name = old.friendly_name
+                        break
+            entry.friendly_name = friendly_name
             is_topology_change = node_id not in stale_ids or any(
                 (old.shard_start, old.shard_end) != (entry.shard_start, entry.shard_end)
                 for eid, old in stale_entries
@@ -4162,6 +4198,12 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
                 entry.uptime_seconds = float(body["uptime_seconds"])
             if "status" in body and body["status"] in ("ready", "loading"):
                 entry.status = body["status"]
+            if "friendly_name" in body:
+                try:
+                    entry.friendly_name = _normalize_friendly_name(body.get("friendly_name"))
+                except ValueError as exc:
+                    self._send_json(400, {"error": str(exc)})
+                    return
             directives = list(entry.pending_directives)
             entry.pending_directives.clear()
             new_assignment = entry.pending_new_assignment
@@ -4443,6 +4485,7 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
                 email=body.get("email"),
                 wallet=body.get("wallet"),
                 password=str(body.get("password") or ""),
+                nickname=body.get("nickname"),
             )
         except ValueError as exc:
             self._send_json(400, {"error": str(exc)})
@@ -4495,7 +4538,7 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
         self._send_json(200, {"ok": True}, headers={"Set-Cookie": _session_cookie_header(None)})
 
     def _handle_account_me(self):
-        """Balance, usage, and API keys for the logged-in account."""
+        """Balance, usage totals, and API keys for the logged-in account."""
         server: _TrackerHTTPServer = self.server  # type: ignore[assignment]
         if self._require_accounts() is None:
             return
@@ -4505,10 +4548,10 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
             return
         keys = server.accounts.keys_for(account["account_id"])  # type: ignore[union-attr]
         balances = {}
-        usage: dict = {"requests": 0, "total_tokens": 0, "total_cost": 0.0, "recent": [], "records": []}
+        usage: dict = {"requests": 0, "total_tokens": 0, "total_cost": 0.0}
         if server.billing is not None:
             balances = {key: server.billing.get_client_balance(key) for key in keys}
-            usage = server.billing.usage_for(keys)
+            usage = server.billing.usage_totals_for(keys)
         self._send_json(200, {
             "account": account,
             "api_keys": keys,
@@ -4518,6 +4561,56 @@ class _TrackerHandler(http.server.BaseHTTPRequestHandler):
             "topup_amount": server.devnet_topup_amount if server.billing is not None else 0.0,
         })
 
+    def _handle_account_usage(self, parsed: urllib.parse.ParseResult):
+        """Per-request charge history for the logged-in account (billing tab)."""
+        server: _TrackerHTTPServer = self.server  # type: ignore[assignment]
+        if self._require_accounts() is None:
+            return
+        account = self._session_account()
+        if account is None:
+            self._send_json(401, {"error": "login required"})
+            return
+        keys = server.accounts.keys_for(account["account_id"])  # type: ignore[union-attr]
+        if server.billing is None:
+            self._send_json(200, {
+                "requests": 0,
+                "total_tokens": 0,
+                "total_cost": 0.0,
+                "records": [],
+                "recent": [],
+            })
+            return
+        limit = None
+        raw_limit = urllib.parse.parse_qs(parsed.query).get("limit", [None])[0]
+        if raw_limit is not None:
+            try:
+                limit = max(1, int(raw_limit))
+            except ValueError:
+                self._send_json(400, {"error": "limit must be an integer"})
+                return
+        self._send_json(200, server.billing.usage_for(keys, recent_limit=limit))
+
+    def _handle_account_profile(self):
+        accounts = self._require_accounts()
+        if accounts is None:
+            return
+        account = self._session_account()
+        if account is None:
+            self._send_json(401, {"error": "login required"})
+            return
+        body = self._read_json_body()
+        if body is None:
+            return
+        try:
+            updated = accounts.update_profile(
+                account["account_id"],
+                nickname=body.get("nickname"),
+            )
+        except ValueError as exc:
+            self._send_json(400, {"error": str(exc)})
+            return
+        self._send_json(200, {"account": updated})
+
     def _handle_account_key_create(self):
         accounts = self._require_accounts()
         if accounts is None:
@@ -6076,6 +6169,10 @@ class TrackerServer:
             shard_end   = int(payload["shard_end"])   if payload.get("shard_end")   is not None else None
         except (TypeError, ValueError):
             return
+        try:
+            friendly_name = _normalize_friendly_name(payload.get("friendly_name"))
+        except ValueError:
+            friendly_name = None
         entry = _NodeEntry(
             node_id=node_id,
             endpoint=endpoint.rstrip("/"),
@@ -6095,6 +6192,7 @@ class TrackerServer:
                 if isinstance(payload.get("downloaded_models"), list)
                 else None
             ),
+            friendly_name=_normalize_friendly_name(payload.get("friendly_name")),
         )
         with self._lock:
             self._registry[node_id] = entry
diff --git a/tests/test_accounts.py b/tests/test_accounts.py
index 62388ef..12d93ce 100644
--- a/tests/test_accounts.py
+++ b/tests/test_accounts.py
@@ -48,6 +48,36 @@ def test_register_rejects_duplicate_identifiers():
         store.register(email="DUP@example.com", password="other-secret")
 
 
+def test_register_and_update_nickname():
+    store = AccountStore()
+    account = store.register(
+        email="nick@example.com",
+        password="secret-123",
+        nickname="  Alpha  ",
+    )
+    assert account["nickname"] == "Alpha"
+    updated = store.update_profile(account["account_id"], nickname="Beta")
+    assert updated["nickname"] == "Beta"
+    cleared = store.update_profile(account["account_id"], nickname=None)
+    assert cleared["nickname"] is None
+
+
+def test_nickname_replicates_across_stores():
+    leader = AccountStore()
+    follower = AccountStore()
+    account = leader.register(
+        email="nick@example.com",
+        password="secret-123",
+        nickname="HiveNick",
+    )
+    leader.update_profile(account["account_id"], nickname="Renamed")
+    events, _ = leader.events_since(0)
+    follower.apply_events(events)
+    view = follower.get_account(account["account_id"])
+    assert view is not None
+    assert view["nickname"] == "Renamed"
+
+
 def test_login_by_email_or_wallet():
     store = AccountStore()
     account = store.register(
@@ -166,6 +196,41 @@ def test_register_login_and_account_view(account_tracker):
     assert me["api_keys"] == [reg["api_key"]]
     assert me["total_balance"] == pytest.approx(0.0)
     assert me["usage"]["requests"] == 0
+    assert "records" not in me["usage"]
+    assert "recent" not in me["usage"]
+
+
+def test_account_usage_endpoint_returns_records(account_tracker):
+    url, ledger = account_tracker
+    reg = _call(f"{url}/v1/auth/register", "POST",
+                {"email": "usage@example.com", "password": "secret-123"})
+    ledger.charge_request(reg["api_key"], "test-model", total_tokens=42, node_work=[("wallet-1", 1)])
+    usage = _call(f"{url}/v1/account/usage", token=reg["session_token"])
+    assert usage["requests"] == 1
+    assert usage["total_tokens"] == 42
+    assert len(usage["records"]) == 1
+    assert usage["records"][0]["model"] == "test-model"
+
+
+def test_account_nickname_register_and_profile_update(account_tracker):
+    url, _ = account_tracker
+    reg = _call(f"{url}/v1/auth/register", "POST", {
+        "email": "nick@example.com",
+        "password": "secret-123",
+        "nickname": "Operator",
+    })
+    assert reg["account"]["nickname"] == "Operator"
+
+    updated = _call(
+        f"{url}/v1/account/profile",
+        "POST",
+        {"nickname": "Renamed"},
+        token=reg["session_token"],
+    )
+    assert updated["account"]["nickname"] == "Renamed"
+
+    me = _call(f"{url}/v1/account", token=reg["session_token"])
+    assert me["account"]["nickname"] == "Renamed"
 
 
 def test_login_sets_cookie_and_cookie_auth_survives_tracker_restart(tmp_path):
diff --git a/tests/test_dashboard.py b/tests/test_dashboard.py
index dd6e650..a43d8f9 100644
--- a/tests/test_dashboard.py
+++ b/tests/test_dashboard.py
@@ -52,6 +52,34 @@ def test_dashboard_chat_uses_streaming_fetch():
     assert 'console.error("chat stream failed", err)' in html
 
 
+def test_network_map_includes_node_friendly_name():
+    tracker = TrackerServer()
+    port = tracker.start()
+    try:
+        body = json.dumps({
+            "endpoint": "http://127.0.0.1:9010",
+            "model": "stub-model",
+            "shard_start": 0,
+            "shard_end": 3,
+            "hardware_profile": {},
+            "friendly_name": "Kitchen GPU",
+        }).encode()
+        req = urllib.request.Request(
+            f"http://127.0.0.1:{port}/v1/nodes/register",
+            data=body,
+            headers={"Content-Type": "application/json"},
+            method="POST",
+        )
+        urllib.request.urlopen(req).read()
+        network = json.loads(
+            urllib.request.urlopen(f"http://127.0.0.1:{port}/v1/network/map").read()
+        )
+    finally:
+        tracker.stop()
+
+    assert network["nodes"][0]["friendly_name"] == "Kitchen GPU"
+
+
 def test_dashboard_chat_model_selector_shows_health_and_speed():
     tracker = TrackerServer()
     port = tracker.start()
@@ -63,11 +91,15 @@ def test_dashboard_chat_model_selector_shows_health_and_speed():
         tracker.stop()
 
     assert "chatModelHealthHp" in html
+    assert "modelServedCopiesFromMap" in html
+    assert "nodeDisplayName" in html
+    assert "accountDisplayName" in html
+    assert "saveNickname" in html
     assert "chatModelTypicalTps" in html
     assert "chatModelOptionLabel" in html
     assert "findRoutingForModel" in html
     assert "tok/s" in html
-    assert "0.0HP" in html or "toFixed(1)}HP" in html
+    assert "toFixed(2)}HP" in html or '${copies(v)}HP' in html
 
 
 def test_dashboard_chat_sessions_use_delegated_handlers():
@@ -81,12 +113,42 @@ def test_dashboard_chat_sessions_use_delegated_handlers():
         tracker.stop()
 
     assert "bindChatSessionList" in html
-    assert "data-session-id=" in html
-    assert "data-delete-session=" in html
+    assert "dataset.sessionId" in html
+    assert "dataset.deleteSession" in html
+    assert '[data-session-id]' in html
     assert 'onclick="selectChatSession(' not in html
     assert 'onclick="deleteChatSession(' not in html
 
 
+def test_dashboard_incremental_refresh_helpers():
+    tracker = TrackerServer()
+    port = tracker.start()
+    try:
+        html = urllib.request.urlopen(
+            f"http://127.0.0.1:{port}/dashboard"
+        ).read().decode()
+    finally:
+        tracker.stop()
+
+    assert "renderIfChanged" in html
+    assert "syncKeyedList" in html
+    assert "refreshBlocked" in html
+    assert "patchAccountPanelView" in html
+    assert "buildAccountPanelShell" in html
+    assert "refreshActiveTab" in html
+    assert "TAB_FETCHERS" in html
+    assert "loadAccountSummary" in html
+    assert "loadAccountUsage" in html
+    assert "fetchOverviewTab" in html
+    assert "pollCallWallIfIdle" in html
+    assert "pendingChatModelRefresh" in html
+    assert 'renderChatHistory(true)' in html
+    assert "renderChatHistory();" not in html
+    assert "refreshIfIdle" not in html
+    assert "refreshAccountIfIdle" not in html
+    assert "setInterval(refreshIfIdle" not in html
+
+
 def test_dashboard_served_by_follower():
     """A tracker that is not the leader (unreachable peers → never elected)
     still serves the dashboard from its own replicated state."""
diff --git a/tests/test_hf_pricing.py b/tests/test_hf_pricing.py
index c7d8c7d..f0c6089 100644
--- a/tests/test_hf_pricing.py
+++ b/tests/test_hf_pricing.py
@@ -186,3 +186,24 @@ def test_qwen_preset_prices_apply_to_all_aliases(tmp_path):
         assert billing.price_for("some/other-model") == pytest.approx(0.02)
     finally:
         pass
+
+
+def test_qwen25_preset_price_is_ten_x_commercial_reference(tmp_path):
+    """Qwen2.5-0.5B bills at 10× ~$0.20/1M reference ($0.002/1k), not the 0.02 default."""
+    import pytest
+    from meshnet_tracker.server import TrackerServer, _resolve_model_preset, DEFAULT_MODEL_PRESETS
+
+    name, preset = _resolve_model_preset(DEFAULT_MODEL_PRESETS, "Qwen/Qwen2.5-0.5B-Instruct")
+    assert name == "qwen2.5-0.5b-instruct"
+    assert preset["price_per_1k_tokens"] == pytest.approx(0.002)
+
+    tracker = TrackerServer(billing_db=str(tmp_path / "billing.sqlite"))
+    billing = tracker._billing
+    assert billing is not None
+    for key in (
+        "qwen2.5-0.5b",
+        "Qwen2.5-0.5B-Instruct",
+        "Qwen/Qwen2.5-0.5B-Instruct",
+    ):
+        assert billing.price_for(key) == pytest.approx(0.002), key
+    assert billing.price_for("unrelated-model") == pytest.approx(0.02)