iuna

iuna-ui.js (102147B)

 const IUNA_DOWNLOADS_URL = "https://getiuna.org/downloads/";
 const IUNA_RELEASE_METADATA_URL = "https://getiuna.org/downloads/latest.json";
 
 window.iunaApp = function iunaApp() {
   return {
     tab: "wallet",
     status: {},
     blocks: [],
     selectedBlock: null,
     selectedByteBlock: null,
     selectedTransaction: null,
     selectedBurnLeaderBlock: null,
     loadingInitialBlocks: false,
     loadingOlder: false,
     hasMoreBlocks: true,
     walletTxs: [],
     walletUtxos: [],
     mempool: [],
     peers: [],
     p2pMetrics: {},
     blockchainMetrics: { enabled: false, latest: null, charts: [] },
     loadingMetrics: false,
     metricsRequestSeq: 0,
     metricHover: null,
     metricsRange: (() => {
       try {
         const stored = localStorage.getItem("iunaMetricsRange");
         if (stored === "1000") return 1000;
         if (stored === "all") return "all";
       } catch {
         // Ignore storage failures; the in-memory default is enough.
       }
       return 100;
     })(),
     networkHealth: {},
     uiMode: (() => {
       try {
         return localStorage.getItem("iunaUiMode") === "advanced" ? "advanced" : "basic";
       } catch {
         return "basic";
       }
     })(),
     latestRelease: null,
     releaseCheckState: "idle",
     releaseCheckError: null,
     config: { setup_complete: false },
     auth: { configured: false, authenticated: false },
     authLoaded: false,
     authPassword: "",
     authPasswordConfirm: "",
     loginPassword: "",
     authFeedback: null,
     settingsOldPassword: "",
     settingsNewPassword: "",
     settingsPasswordConfirm: "",
     settingsFeedback: null,
     keepTrackOfMetrics: false,
     addressBook: {},
     addressBookVersion: 0,
     addressBookModalOpen: false,
     addressBookPickerOpen: false,
     addressBookEditingAddress: null,
     addressBookDraftAddress: "",
     addressBookDraftName: "",
     p2pAcceptInbound: false,
     p2pBindPort: 9444,
     p2pBindPortDirty: false,
     p2pAnnounceAddr: "",
     p2pAnnounceDirty: false,
     setupWallet: { address: null, seed_phrase: null, dev_verify_bypass: false, requires_peer: false },
     setupNodeMode: "wallet",
     setupWalletMode: "create",
     setupSeedStep: "write",
     generatedSeedPhrase: "",
     verifyChallenges: [],
     verifyAnswers: {},
     importSeedPhrase: "",
     walletVerified: false,
     setupFeedback: null,
     burnAmount: 100,
     burnAmountDraft: "0.0001",
     burnFee: 100,
     burnFeeDraft: "0.0001",
     miningEnabled: false,
     powMiningEnabled: false,
     powMiningWorkers: 1,
     maxPowMiningWorkers: 32,
     recoveryVdfTopRankPercent: 50,
     burnAmountDirty: false,
     miningEvents: [],
     miningEventLimit: 1000,
     miningEventState: {},
     miningEventCounter: 0,
     transferTo: "",
     transferAmount: null,
     transferFee: "0.000001",
     feeEstimates: { transfer: null, burn: null, mine: null },
     feeEstimateTimer: null,
     showSendAdvanced: false,
     selectedTransferUtxos: [],
     selectedTransferUtxoAmounts: {},
     lastSelectedTransferUtxo: null,
     walletTxFilters: { transfer: true, mine: false, burn: false },
     setupPeerAddress: "iuna.jhx.app:9444",
     peerAddress: "",
     flash: null,
     flashTimer: null,
     chainResetModalOpen: false,
     chainResetConfirm: "",
     chainResetBusy: false,
     showWalletUtxos: false,
     showPowDifficultyInfo: false,
     lastUpdated: null,
     pollHandle: null,
     refreshPromise: null,
     shellRefreshPromise: null,
     networkHealthPromise: null,
     requestTimeoutMs: 12000,
     hashListenerInstalled: false,
     newBlockHashes: new Set(),
     newBlockTimer: null,
     lastBlockMempoolHeight: null,
     mempoolFirstSeenHeights: {},
     mempoolFirstSeenAt: {},
     mempoolSeenInitialized: false,
     blockPageSize: 20,
     datasetPageSize: 25,
     walletTxPage: { offset: 0, total: 0, hasMore: true, loading: false, backgroundLoading: false },
     walletUtxoPage: { offset: 0, total: 0, hasMore: true, loading: false, backgroundLoading: false },
     mempoolPage: { offset: 0, total: 0, hasMore: true, loading: false, backgroundLoading: false },
     peerPage: { offset: 0, total: 0, hasMore: true, loading: false, backgroundLoading: false },
 
     init() {
       this.bootstrap();
     },
 
     async bootstrap() {
       await this.refreshAuth();
       if (this.showingAuth()) return;
       await this.bootstrapAuthenticated();
     },
 
     async bootstrapAuthenticated() {
       await this.refreshConfig();
       if (!this.config.setup_complete) {
         await this.refreshWalletSetup();
       }
       this.tab = this.tabFromHash();
       if (!this.hashListenerInstalled) {
         window.addEventListener("hashchange", () => {
           this.setTab(this.tabFromHash());
         });
         this.hashListenerInstalled = true;
       }
       await this.refresh();
       this.checkLatestRelease();
       if (!this.pollHandle) {
         this.pollHandle = setInterval(() => this.refresh({ silent: true }), 5000);
       }
     },
 
     canUseProtectedApi() {
       return this.authLoaded && this.auth.configured === true && this.auth.authenticated === true;
     },
 
     stopPolling() {
       if (!this.pollHandle) return;
       clearInterval(this.pollHandle);
       this.pollHandle = null;
     },
 
     tabFromHash() {
       const hash = window.location.hash.replace(/^#\/?/, "");
       return this.allowedTabs().includes(hash) ? hash : "wallet";
     },
 
     setTab(tab) {
       if (!this.allowedTabs().includes(tab)) return;
       const alreadyActive = this.tab === tab;
       this.tab = tab;
       if (window.location.hash !== `#${tab}`) {
         window.location.hash = tab;
       }
       if (alreadyActive) return;
       this.refresh({ silent: true });
     },
 
     allowedTabs() {
       const tabs = this.advancedMode()
         ? ["wallet", "mining", "p2p", "chain", "settings"]
         : ["wallet", "chain", "settings"];
       if (this.config.keep_track_of_metrics) {
         tabs.splice(tabs.indexOf("chain") + 1, 0, "metrics");
       }
       return tabs;
     },
 
     basicMode() {
       return this.uiMode !== "advanced";
     },
 
     advancedMode() {
       return this.uiMode === "advanced";
     },
 
     setUiMode(mode) {
       this.uiMode = mode === "advanced" ? "advanced" : "basic";
       try {
         localStorage.setItem("iunaUiMode", this.uiMode);
       } catch {}
       if (!this.allowedTabs().includes(this.tab)) {
         this.setTab("wallet");
       }
     },
 
     toggleUiMode() {
       this.setUiMode(this.advancedMode() ? "basic" : "advanced");
     },
 
     pageTitle() {
       return {
         wallet: "iuna",
         mining: "Mining",
         p2p: "P2P",
         chain: "Chain",
         metrics: "Metrics",
         settings: "Settings",
       }[this.tab] || "iuna";
     },
 
     appVersionLabel() {
       return `v${this.normalizeVersion(this.status.app_version || "0.0.0")}`;
     },
 
     latestReleaseLabel() {
       return this.latestRelease?.tag || "";
     },
 
     updateAvailable() {
       const current = this.normalizeVersion(this.status.app_version);
       const latest = this.normalizeVersion(this.latestRelease?.tag);
       if (!current || !latest) return false;
       if (current === latest) return false;
       return this.compareVersions(latest, current) > 0;
     },
 
     versionPanelTitle() {
       if (this.updateAvailable()) return `Update available: ${this.latestReleaseLabel()}`;
       if (this.releaseCheckState === "failed") return this.releaseCheckError || "Could not check latest release";
       if (this.releaseCheckState === "checking") return "Checking latest release";
       return "iuna is up to date";
     },
 
     async openLatestRelease() {
       const url = this.latestRelease?.url || IUNA_DOWNLOADS_URL;
       try {
         const tauriOpen = window.__TAURI__?.shell?.open;
         if (typeof tauriOpen === "function") {
           await tauriOpen(url);
           return;
         }
       } catch {}
       window.open(url, "_blank", "noopener,noreferrer");
     },
 
     showingSetup() {
       return this.authLoaded && !this.showingAuth() && !this.config.setup_complete;
     },
 
     showingAuth() {
       return this.authLoaded && (!this.auth.configured || !this.auth.authenticated);
     },
 
     setupRequiresPeer() {
       return this.setupWallet.requires_peer === true;
     },
 
     setupHasPeer() {
       return this.setupPeerAddress.trim().length > 0 || this.outboundPeers().length > 0;
     },
 
     setupCanContinue() {
       return this.walletVerified && (!this.setupRequiresPeer() || this.setupHasPeer());
     },
 
     selectSetupNodeMode(mode) {
       this.setupNodeMode = ["wallet", "non-listening", "listening"].includes(mode)
         ? mode
         : "wallet";
       this.setupFeedback = null;
     },
 
     setupNodeModeCopy() {
       if (this.setupNodeMode === "listening") {
         return "Listening node shows mining and P2P controls and accepts inbound P2P connections when TCP port 9444 is reachable.";
       }
       if (this.setupNodeMode === "non-listening") {
         return "Non-listening node shows mining and P2P controls, connects out to peers, and keeps inbound P2P closed.";
       }
       return "Wallet mode keeps the interface focused on your wallet and chain, while this node only connects out to peers.";
     },
 
     async refreshAuth() {
       this.auth = await this.fetchJson("/api/auth/status");
       this.authLoaded = true;
     },
 
     async setupPassword() {
       try {
         this.authFeedback = null;
         if (this.authPassword !== this.authPasswordConfirm) {
           throw new Error("Passwords do not match");
         }
         await this.postAuth("/api/auth/setup", this.authPassword);
         this.authPassword = "";
         this.authPasswordConfirm = "";
         await this.refreshAuth();
         await this.bootstrapAuthenticated();
         this.showFlash("Password set", "success");
       } catch (error) {
         this.showAuthFeedback(error.message, "error");
       }
     },
 
     async login() {
       try {
         this.authFeedback = null;
         await this.postAuth("/api/auth/login", this.loginPassword);
         this.loginPassword = "";
         await this.refreshAuth();
         await this.bootstrapAuthenticated();
         this.showFlash("Logged in", "success");
       } catch (error) {
         this.showAuthFeedback(error.message, "error");
       }
     },
 
     async postAuth(path, password) {
       const response = await this.fetchWithTimeout(path, {
         method: "POST",
         headers: { Accept: "application/json", "Content-Type": "application/x-www-form-urlencoded" },
         body: new URLSearchParams({ password }),
       });
       const text = await response.text();
       let payload = { ok: response.ok, error: null };
       if (text) {
         try {
           payload = JSON.parse(text);
         } catch {
           payload = { ok: false, error: text };
         }
       }
       if (!response.ok || !payload.ok) {
         throw new Error(payload.error || `${path} returned ${response.status}`);
       }
       return payload;
     },
 
     async logout() {
       try {
         await this.postAuth("/api/auth/logout", "");
         this.stopPolling();
         await this.refreshAuth();
         this.showFlash("Locked", "success");
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     async changePassword() {
       try {
         this.settingsFeedback = null;
         if (this.settingsNewPassword !== this.settingsPasswordConfirm) {
           throw new Error("New passwords do not match");
         }
         const body = new URLSearchParams({
           old_password: this.settingsOldPassword,
           new_password: this.settingsNewPassword,
         });
         const response = await this.fetchWithTimeout("/api/auth/change-password", {
           method: "POST",
           headers: {
             Accept: "application/json",
             "Content-Type": "application/x-www-form-urlencoded",
           },
           body,
         });
         const payload = await response.json();
         if (!response.ok || !payload.ok) {
           throw new Error(payload.error || `/api/auth/change-password returned ${response.status}`);
         }
         this.settingsOldPassword = "";
         this.settingsNewPassword = "";
         this.settingsPasswordConfirm = "";
         await this.refreshAuth();
         this.showSettingsFeedback("Password changed", "success");
         this.showFlash("Password changed", "success");
       } catch (error) {
         this.showSettingsFeedback(error.message, "error");
       }
     },
 
     async refreshConfig() {
       this.config = await this.fetchJson("/api/config");
       this.syncConfigState({ addressBookVersion: this.addressBookVersion });
     },
 
     syncConfigState(options = {}) {
       this.keepTrackOfMetrics = this.config.keep_track_of_metrics === true;
       this.recoveryVdfTopRankPercent = Number(
         this.config.recovery_vdf_top_rank_percent ??
           this.config.recoveryVdfTopRankPercent ??
           this.recoveryVdfTopRankPercent
       );
       this.p2pAcceptInbound = this.config.p2p_accept_inbound === true;
       if (!this.p2pBindPortDirty) {
         this.p2pBindPort = Number(this.config.p2p_bind_port || 9444);
       }
       if (
         options.addressBookVersion === undefined ||
         options.addressBookVersion >= this.addressBookVersion
       ) {
         this.addressBook = this.config.address_book || this.config.addressBook || {};
       }
       if (!this.p2pAnnounceDirty) {
         this.p2pAnnounceAddr = this.config.p2p_announce_addr || "";
       }
     },
 
     async refreshWalletSetup() {
       const payload = await this.fetchJson("/api/wallet/setup");
       if (!payload.ok) {
         throw new Error(payload.error || "Could not load wallet setup");
       }
       this.setupWallet = payload;
       if (
         payload.seed_phrase &&
         payload.seed_phrase !== this.generatedSeedPhrase &&
         this.setupWalletMode === "create" &&
         !this.walletVerified
       ) {
         this.generatedSeedPhrase = payload.seed_phrase;
         this.walletVerified = false;
         this.setupSeedStep = "write";
         this.verifyChallenges = [];
         this.verifyAnswers = {};
       }
     },
 
     setupSeedWords() {
       return this.generatedSeedPhrase ? this.generatedSeedPhrase.split(/\s+/) : [];
     },
 
     setupAddress() {
       return this.setupWallet.address || this.status.wallet_address || "-";
     },
 
     selectSetupWalletMode(mode) {
       this.setupWalletMode = mode;
       this.walletVerified = mode === "import" ? this.walletVerified && !this.generatedSeedPhrase : false;
       this.setupFeedback = null;
     },
 
     async generateSetupSeed() {
       try {
         this.setupFeedback = null;
         const payload = await this.postWalletSetup("/api/wallet/generate", {});
         this.setupWallet = payload;
         this.generatedSeedPhrase = payload.seed_phrase || "";
         this.setupWalletMode = "create";
         this.setupSeedStep = "write";
         this.walletVerified = false;
         this.verifyChallenges = [];
         this.verifyAnswers = {};
         await this.refresh({ force: true });
       } catch (error) {
         this.showSetupFeedback(error.message, "error");
       }
     },
 
     beginSeedVerification() {
       this.setupFeedback = null;
       const words = this.setupSeedWords();
       if (words.length < 4) {
         this.showSetupFeedback("Generate a recovery phrase first", "error");
         return;
       }
       const positions = words.map((_, index) => index);
       for (let index = positions.length - 1; index > 0; index -= 1) {
         const swapIndex = Math.floor(Math.random() * (index + 1));
         [positions[index], positions[swapIndex]] = [positions[swapIndex], positions[index]];
       }
       this.verifyChallenges = positions
         .slice(0, 4)
         .sort((left, right) => left - right)
         .map((index) => ({ index, position: index + 1 }));
       this.verifyAnswers = {};
       for (const challenge of this.verifyChallenges) {
         this.verifyAnswers[challenge.index] = "";
       }
       this.setupSeedStep = "verify";
     },
 
     verifyGeneratedSeed() {
       const words = this.setupSeedWords();
       const ok = this.verifyChallenges.every((challenge) => {
         const expected = words[challenge.index] || "";
         const actual = (this.verifyAnswers[challenge.index] || "").trim().toLowerCase();
         return actual === expected;
       });
       if (!ok) {
         this.showSetupFeedback("Seed word check failed", "error");
         return;
       }
       this.walletVerified = true;
       this.setupSeedStep = "verified";
       this.showSetupFeedback("Recovery phrase verified", "success");
     },
 
     skipSeedVerificationForDev() {
       if (!this.setupWallet.dev_verify_bypass) return;
       this.walletVerified = true;
       this.setupSeedStep = "verified";
       this.showSetupFeedback("Recovery phrase verification skipped", "success");
     },
 
     async importSetupSeed() {
       try {
         this.setupFeedback = null;
         const payload = await this.postWalletSetup("/api/wallet/import", {
           seed_phrase: this.importSeedPhrase,
         });
         this.setupWallet = payload;
         this.generatedSeedPhrase = "";
         this.verifyChallenges = [];
         this.verifyAnswers = {};
         this.walletVerified = true;
         this.setupSeedStep = "verified";
         await this.refresh({ force: true });
         this.showSetupFeedback("Recovery phrase imported", "success");
       } catch (error) {
         this.showSetupFeedback(error.message, "error");
       }
     },
 
     async postWalletSetup(path, fields) {
       const body = new URLSearchParams();
       for (const [key, value] of Object.entries(fields)) {
         body.set(key, value);
       }
       const response = await this.fetchWithTimeout(path, {
         method: "POST",
         headers: { Accept: "application/json", "Content-Type": "application/x-www-form-urlencoded" },
         body,
       });
       const payload = await response.json();
       if (!response.ok || !payload.ok) {
         throw new Error(payload.error || `${path} returned ${response.status}`);
       }
       return payload;
     },
 
     async completeSetup() {
       try {
         if (!this.walletVerified) {
           throw new Error("Verify or import a recovery phrase first");
         }
         if (this.setupRequiresPeer() && !this.setupHasPeer()) {
           throw new Error("Add a bootstrap peer before continuing");
         }
         await this.applySetupNodeMode();
         const response = await this.fetchWithTimeout("/api/config", {
           method: "POST",
           headers: {
             Accept: "application/json",
             "Content-Type": "application/x-www-form-urlencoded",
           },
           body: new URLSearchParams({
             setup_complete: "true",
             peer: this.setupPeerAddress.trim(),
           }),
         });
         const payload = await response.json();
         if (!response.ok || !payload.ok) {
           throw new Error(payload.error || `/api/config returned ${response.status}`);
         }
         await this.refresh({ force: true });
         this.setupFeedback = null;
         this.generatedSeedPhrase = "";
         this.importSeedPhrase = "";
         this.setupPeerAddress = "";
         this.verifyChallenges = [];
         this.verifyAnswers = {};
         this.showFlash("Setup complete", "success");
         this.setTab("wallet");
       } catch (error) {
         this.showSetupFeedback(error.message, "error");
       }
     },
 
     async applySetupNodeMode() {
       const mode = ["wallet", "non-listening", "listening"].includes(this.setupNodeMode)
         ? this.setupNodeMode
         : "wallet";
       const acceptInbound = mode === "listening";
       if (this.p2pAcceptInbound !== acceptInbound) {
         await this.submitForm("/api/settings/p2p-inbound", {
           enabled: acceptInbound,
           bind_port: this.p2pBindPortValue(),
         });
         this.p2pAcceptInbound = acceptInbound;
       }
       this.setUiMode(mode === "wallet" ? "basic" : "advanced");
     },
 
     async refresh(options = {}) {
       if (this.refreshPromise) {
         if (options.force === true) {
           try {
             await this.refreshPromise;
           } catch {
             // The forced refresh below should report the current state.
           }
         } else {
           return this.refreshPromise;
         }
       }
       this.refreshPromise = this.refreshNow(options).finally(() => {
         this.refreshPromise = null;
       });
       return this.refreshPromise;
     },
 
     async refreshNow(options = {}) {
       if (!this.canUseProtectedApi()) return;
       const addressBookVersion = this.addressBookVersion;
       const tab = this.tab;
       const shouldLoadBlocks = tab === "chain" || tab === "mining";
       const shouldLoadP2pMetrics = tab === "p2p";
       const shouldLoadMetrics = tab === "metrics";
       if (shouldLoadMetrics) {
         await this.refreshMetrics(options);
         this.refreshShellState({ addressBookVersion, silent: true });
         return;
       }
       if (shouldLoadBlocks && this.blocks.length === 0) this.loadingInitialBlocks = true;
       const pagedDatasets = [];
       if (tab === "wallet") pagedDatasets.push("walletTx", "walletUtxo");
       if (tab === "chain") pagedDatasets.push("mempool");
       if (tab === "p2p") pagedDatasets.push("peer");
       try {
         const [config, status, blocks, p2pMetrics, blockchainMetrics] = await Promise.all([
           this.fetchJson("/api/config"),
           this.fetchJson("/api/status"),
           shouldLoadBlocks ? this.fetchJson("/api/blocks?limit=30") : Promise.resolve(null),
           shouldLoadP2pMetrics ? this.fetchJson("/api/p2p/metrics") : Promise.resolve(this.p2pMetrics),
           Promise.resolve(this.blockchainMetrics),
         ]);
         const previousChainHeight = this.status.chain?.height;
         this.status = status;
         this.config = config;
         this.syncConfigState({ addressBookVersion });
         if (!this.allowedTabs().includes(this.tab)) {
           this.setTab("wallet");
         }
         if (!this.config.setup_complete) {
           await this.refreshWalletSetup();
         }
         this.syncMempoolBlockMarker(previousChainHeight, status.chain?.height);
         if (blocks) this.mergeFreshBlocks(blocks, { animateHead: true });
         this.pruneSelectedTransferUtxos();
         this.p2pMetrics = p2pMetrics;
         this.blockchainMetrics = blockchainMetrics;
         this.burnAmount = status.mining?.burn_per_block ?? this.burnAmount;
         this.burnFee = status.mining?.automatic_burn_fee ?? this.burnFee;
         this.miningEnabled = status.mining?.automatic ?? this.miningEnabled;
         this.powMiningEnabled = status.mining?.pow_mining_enabled ?? this.powMiningEnabled;
         this.powMiningWorkers = status.mining?.pow_mining_workers ?? this.powMiningWorkers;
         this.maxPowMiningWorkers =
           status.mining?.max_pow_mining_workers ?? this.maxPowMiningWorkers;
         if (!this.burnAmountDirty) {
           this.burnAmountDraft = this.amountLabel(this.burnAmount);
           this.burnFeeDraft = this.amountLabel(this.burnFee);
         }
         this.lastUpdated = new Date();
         this.syncMiningEvents({ status, blocks });
         this.scheduleFeeEstimates();
         this.refreshNetworkHealth({ silent: options.silent === true });
         await Promise.all(
           pagedDatasets.map((kind) =>
             this.refreshPagedDataset(kind, { silent: options.silent === true })
           )
         );
       } catch (error) {
         if (String(error.message || "").includes("401")) {
           this.stopPolling();
           await this.refreshAuth();
           return;
         }
         this.showFlash(error.message, "error");
       } finally {
         if (shouldLoadBlocks) this.loadingInitialBlocks = false;
       }
     },
 
     async refreshShellState(options = {}) {
       if (!this.canUseProtectedApi()) return;
       if (this.shellRefreshPromise) return this.shellRefreshPromise;
       const addressBookVersion = options.addressBookVersion ?? this.addressBookVersion;
       this.shellRefreshPromise = Promise.all([
         this.fetchJson("/api/config"),
         this.fetchJson("/api/status"),
       ])
         .then(async ([config, status]) => {
           const previousChainHeight = this.status.chain?.height;
           this.status = status;
           this.config = config;
           this.syncConfigState({ addressBookVersion });
           if (!this.allowedTabs().includes(this.tab)) {
             this.setTab("wallet");
           }
           if (!this.config.setup_complete) {
             await this.refreshWalletSetup();
           }
           this.syncMempoolBlockMarker(previousChainHeight, status.chain?.height);
           this.burnAmount = status.mining?.burn_per_block ?? this.burnAmount;
           this.burnFee = status.mining?.automatic_burn_fee ?? this.burnFee;
           this.miningEnabled = status.mining?.automatic ?? this.miningEnabled;
           this.powMiningEnabled = status.mining?.pow_mining_enabled ?? this.powMiningEnabled;
           this.powMiningWorkers = status.mining?.pow_mining_workers ?? this.powMiningWorkers;
           this.maxPowMiningWorkers =
             status.mining?.max_pow_mining_workers ?? this.maxPowMiningWorkers;
           if (!this.burnAmountDirty) {
             this.burnAmountDraft = this.amountLabel(this.burnAmount);
             this.burnFeeDraft = this.amountLabel(this.burnFee);
           }
           this.lastUpdated = new Date();
           this.syncMiningEvents({ status, blocks: null });
           this.scheduleFeeEstimates();
           this.refreshNetworkHealth({ silent: true });
         })
         .catch((error) => {
           if (options.silent !== true) this.showFlash(error.message, "error");
         })
         .finally(() => {
           this.shellRefreshPromise = null;
         });
       return this.shellRefreshPromise;
     },
 
     async refreshNetworkHealth(options = {}) {
       if (!this.canUseProtectedApi()) return;
       if (this.networkHealthPromise) return this.networkHealthPromise;
       this.networkHealthPromise = this.fetchJson("/api/network/health")
         .then((networkHealth) => {
           this.networkHealth = networkHealth;
           return networkHealth;
         })
         .catch((error) => {
           if (options.silent !== true) this.showFlash(error.message, "error");
           return null;
         })
         .finally(() => {
           this.networkHealthPromise = null;
         });
       return this.networkHealthPromise;
     },
 
     async fetchJson(path) {
       const response = await this.fetchWithTimeout(path, {
         headers: { Accept: "application/json" },
         cache: "no-store",
       });
       if (!response.ok) {
         throw new Error(`${path} returned ${response.status}`);
       }
       return response.json();
     },
 
     async fetchWithTimeout(path, options = {}) {
       const controller = new AbortController();
       const timeout = setTimeout(() => controller.abort(), this.requestTimeoutMs);
       try {
         return await fetch(path, { ...options, signal: controller.signal });
       } catch (error) {
         if (error?.name === "AbortError") {
           throw new Error(`${path} timed out`);
         }
         throw error;
       } finally {
         clearTimeout(timeout);
       }
     },
 
     datasetConfig(kind) {
       return {
         walletTx: {
           items: "walletTxs",
           page: "walletTxPage",
           path: () => this.walletTransactionsPath(),
           key: (tx) => `${tx.status || ""}:${tx.signature || ""}`,
         },
         walletUtxo: {
           items: "walletUtxos",
           page: "walletUtxoPage",
           path: () => "/api/wallet/utxos",
           key: (utxo) => this.utxoOutpoint(utxo),
         },
         mempool: {
           items: "mempool",
           page: "mempoolPage",
           path: () => "/api/mempool",
           key: (tx) => tx.signature || "",
         },
         peer: {
           items: "peers",
           page: "peerPage",
           path: () => "/api/peers",
           key: (peer) => peer.address || "",
         },
       }[kind];
     },
 
     async resetPagedDataset(kind) {
       const config = this.datasetConfig(kind);
       if (!config) return;
       this[config.items] = [];
       this.resetPageState(kind);
       await this.refreshPagedDataset(kind);
     },
 
     resetPageState(kind) {
       const config = this.datasetConfig(kind);
       if (!config) return;
       Object.assign(this[config.page], {
         offset: 0,
         total: 0,
         hasMore: true,
         loading: false,
         backgroundLoading: false,
       });
     },
 
     async refreshPagedDataset(kind, options = {}) {
       if (!this.canUseProtectedApi()) return;
       const config = this.datasetConfig(kind);
       if (!config) return;
       const page = this[config.page];
       if (page.loading || page.backgroundLoading) return;
       const currentLength = this[config.items].length;
       const limit = Math.max(this.datasetPageSize, currentLength || 0);
       await this.loadPagedDataset(kind, {
         offset: 0,
         limit,
         replace: true,
         silent: options.silent === true,
       });
     },
 
     async loadNextPage(kind) {
       if (!this.canUseProtectedApi()) return;
       const config = this.datasetConfig(kind);
       if (!config) return;
       const page = this[config.page];
       if (page.loading || page.backgroundLoading || !page.hasMore) return;
       await this.loadPagedDataset(kind, {
         offset: page.offset ?? this[config.items].length,
         limit: this.datasetPageSize,
         replace: false,
       });
     },
 
     async loadPagedDataset(kind, options) {
       const config = this.datasetConfig(kind);
       const page = this[config.page];
       const loadingKey = options.silent === true ? "backgroundLoading" : "loading";
       page[loadingKey] = true;
       try {
         const payload = await this.fetchJson(
           this.paginatedPath(config.path(), options.offset, options.limit)
         );
         const normalized = this.normalizedPage(payload, options.offset, options.limit);
         this[config.items] = options.replace
           ? normalized.items
           : this.mergeDatasetItems(this[config.items], normalized.items, config.key);
         if (kind === "mempool") {
           this.trackMempoolFirstSeenHeights({ append: options.replace !== true });
           this.sortMempoolNewestFirst();
         }
         page.offset = normalized.nextOffset ?? this[config.items].length;
         page.total = normalized.total;
         page.hasMore = normalized.hasMore;
         if (kind === "walletUtxo") {
           this.rememberUtxoAmounts(this.walletUtxos);
           this.pruneSelectedTransferUtxos();
         }
       } catch (error) {
         this.showFlash(error.message, "error");
       } finally {
         page[loadingKey] = false;
       }
     },
 
     paginatedPath(path, offset, limit) {
       const url = new URL(path, window.location.origin);
       url.searchParams.set("offset", String(offset));
       url.searchParams.set("limit", String(limit));
       return `${url.pathname}?${url.searchParams.toString()}`;
     },
 
     normalizedPage(payload, offset, limit) {
       if (Array.isArray(payload)) {
         const nextOffset = offset + payload.length;
         return {
           items: payload,
           total: nextOffset,
           hasMore: payload.length >= limit,
           nextOffset,
         };
       }
       const items = Array.isArray(payload?.items) ? payload.items : [];
       return {
         items,
         total: Number(payload?.total ?? offset + items.length),
         hasMore: payload?.hasMore === true,
         nextOffset: payload?.nextOffset ?? offset + items.length,
       };
     },
 
     mergeDatasetItems(existing, incoming, keyFn) {
       const rows = [];
       const seen = new Set();
       for (const item of [...existing, ...incoming]) {
         const key = keyFn(item);
         if (!key || seen.has(key)) continue;
         seen.add(key);
         rows.push(item);
       }
       return rows;
     },
 
     syncMempoolBlockMarker(previousHeight, currentHeight) {
       const normalizedCurrent = Number(currentHeight);
       if (!Number.isFinite(normalizedCurrent)) return;
       const normalizedPrevious = Number(previousHeight);
       if (this.lastBlockMempoolHeight === null) {
         this.lastBlockMempoolHeight = normalizedCurrent;
         return;
       }
       if (!Number.isFinite(normalizedPrevious) || normalizedCurrent > normalizedPrevious) {
         this.lastBlockMempoolHeight = normalizedCurrent;
       }
     },
 
     trackMempoolFirstSeenHeights(options = {}) {
       const height = Number(this.status.chain?.height);
       if (!Number.isFinite(height)) return;
       const active = new Set();
       const firstBatch = !this.mempoolSeenInitialized;
       const seenHeight = firstBatch ? height - 1 : height;
       const knownSeenTimes = Object.values(this.mempoolFirstSeenAt)
         .map((value) => Number(value))
         .filter((value) => Number.isFinite(value));
       const oldestSeenAt = knownSeenTimes.length ? Math.min(...knownSeenTimes) : Date.now();
       const baseSeenAt = options.append && this.mempoolSeenInitialized
         ? oldestSeenAt - 1
         : Date.now();
       let newIndex = 0;
       for (const tx of this.mempool) {
         const key = this.mempoolKey(tx);
         if (!key) continue;
         active.add(key);
         if (this.mempoolFirstSeenHeights[key] === undefined) {
           this.mempoolFirstSeenHeights[key] = seenHeight;
           this.mempoolFirstSeenAt[key] = baseSeenAt - newIndex;
           newIndex += 1;
         }
       }
       this.mempoolSeenInitialized = true;
       for (const key of Object.keys(this.mempoolFirstSeenHeights)) {
         if (!active.has(key)) {
           delete this.mempoolFirstSeenHeights[key];
           delete this.mempoolFirstSeenAt[key];
         }
       }
     },
 
     mempoolKey(tx) {
       return tx?.signature || tx?.commitment || "";
     },
 
     mempoolItemClass(tx) {
       const key = this.mempoolKey(tx);
       const firstSeenHeight = Number(this.mempoolFirstSeenHeights[key]);
       const markerHeight = Number(this.status.chain?.height ?? this.lastBlockMempoolHeight);
       const classes = [];
       if (isBlindedMempoolItem(tx)) classes.push("blinded-hidden");
       if (key && Number.isFinite(firstSeenHeight) && Number.isFinite(markerHeight)) {
         classes.push(firstSeenHeight >= markerHeight ? "new-since-block" : "before-last-block");
       }
       return classes.join(" ");
     },
 
     mempoolSeenTimeLabel(tx) {
       const seenAt = Number(this.mempoolFirstSeenAt[this.mempoolKey(tx)]);
       if (!Number.isFinite(seenAt)) return "";
       return `Seen ${new Date(seenAt).toLocaleTimeString()}`;
     },
 
     sortMempoolNewestFirst() {
       this.mempool = [...this.mempool].sort((left, right) => {
         const leftSeenAt = Number(this.mempoolFirstSeenAt[this.mempoolKey(left)]);
         const rightSeenAt = Number(this.mempoolFirstSeenAt[this.mempoolKey(right)]);
         if (Number.isFinite(leftSeenAt) && Number.isFinite(rightSeenAt) && leftSeenAt !== rightSeenAt) {
           return rightSeenAt - leftSeenAt;
         }
         const leftSeen = Number(this.mempoolFirstSeenHeights[this.mempoolKey(left)]);
         const rightSeen = Number(this.mempoolFirstSeenHeights[this.mempoolKey(right)]);
         if (Number.isFinite(leftSeen) && Number.isFinite(rightSeen) && leftSeen !== rightSeen) {
           return rightSeen - leftSeen;
         }
         return this.mempoolKey(right).localeCompare(this.mempoolKey(left));
       });
     },
 
     observePageSentinel(kind, element) {
       if (!element || element.__iunaPageObserver) return;
       const observer = new IntersectionObserver((entries) => {
         if (this.canUseProtectedApi() && entries.some((entry) => entry.isIntersecting)) {
           this.loadNextPage(kind);
         }
       }, { root: null, rootMargin: "180px 0px" });
       observer.observe(element);
       element.__iunaPageObserver = observer;
     },
 
     observeBlockSentinel(element) {
       if (!element || element.__iunaBlockObserver) return;
       const observer = new IntersectionObserver((entries) => {
         if (this.canUseProtectedApi() && entries.some((entry) => entry.isIntersecting)) {
           this.loadOlderBlocks();
         }
       }, { root: null, rootMargin: "180px 0px" });
       observer.observe(element);
       element.__iunaBlockObserver = observer;
     },
 
     walletTransactionsPath() {
       const params = new URLSearchParams({
         tx: String(this.walletTxFilters.transfer),
         mine: String(this.walletTxFilters.mine),
         burn: String(this.walletTxFilters.burn),
       });
       return `/api/wallet/transactions?${params.toString()}`;
     },
 
     async refreshWalletTransactions() {
       await this.resetPagedDataset("walletTx");
     },
 
     async checkLatestRelease() {
       if (this.releaseCheckState === "checking") return;
       this.releaseCheckState = "checking";
       this.releaseCheckError = null;
       try {
         const response = await fetch(IUNA_RELEASE_METADATA_URL, {
           cache: "no-store",
           headers: { Accept: "application/json" },
         });
         if (!response.ok) {
           throw new Error(`Release check failed (${response.status})`);
         }
         const release = await response.json();
         const version = this.normalizeVersion(release.tag || release.version);
         if (!version) {
           throw new Error("Release metadata is missing a version");
         }
         this.latestRelease = {
           tag: `v${version}`,
           url: release.url || IUNA_DOWNLOADS_URL,
         };
         this.releaseCheckState = "done";
       } catch (error) {
         this.releaseCheckError = error.message || "Release check failed";
         this.releaseCheckState = "failed";
       }
     },
 
     mergeFreshBlocks(freshBlocks, options = {}) {
       const hadBlocks = this.blocks.length > 0;
       const previousHeights = new Set(this.blocks.map((block) => block.height));
       const previousHead = this.blocks[0]?.height;
       const previousHeadHash = this.blocks[0]?.hash;
       const wasFollowingHead =
         !this.selectedBlock || (previousHeadHash && this.selectedBlock.hash === previousHeadHash);
       const rail = this.$refs.blockRail;
       const previousScrollWidth = hadBlocks ? rail?.scrollWidth ?? 0 : 0;
       const known = new Map(this.blocks.map((block) => [block.hash, block]));
       for (const block of freshBlocks) {
         known.set(block.hash, block);
       }
       this.blocks = Array.from(known.values()).sort((left, right) => right.height - left.height);
       const currentHead = this.blocks[0] || null;
       if (wasFollowingHead) {
         this.selectedBlock = currentHead;
       } else if (!this.selectedBlock || !known.has(this.selectedBlock.hash)) {
         this.selectedBlock = this.blocks[0] || null;
       } else {
         this.selectedBlock = known.get(this.selectedBlock.hash);
       }
       this.hasMoreBlocks =
         this.blocks.some((block) => block.height > 0) &&
         !this.blocks.some((block) => block.height === 0);
 
       const newHeadBlocks = options.animateHead
         && hadBlocks
         ? this.blocks.filter(
             (block) =>
               !previousHeights.has(block.height) &&
               (typeof previousHead !== "number" || block.height > previousHead)
           )
         : [];
       if (newHeadBlocks.length > 0) {
         this.markNewBlocks(newHeadBlocks.map((block) => block.hash));
         this.$nextTick(() =>
           this.slideNewHeadBlocks(previousScrollWidth, { force: wasFollowingHead })
         );
       } else if (!hadBlocks) {
         this.$nextTick(() => this.resetBlockRailPosition());
       }
       this.$nextTick(() => this.maybeLoadOlderBlocksFromRail());
     },
 
     markNewBlocks(hashes) {
       this.newBlockHashes = new Set(hashes);
       if (this.newBlockTimer) {
         clearTimeout(this.newBlockTimer);
       }
       this.newBlockTimer = setTimeout(() => {
         this.newBlockHashes = new Set();
         this.newBlockTimer = null;
       }, 650);
     },
 
     slideNewHeadBlocks(previousScrollWidth, options = {}) {
       const rail = this.$refs.blockRail;
       if (!rail || previousScrollWidth === 0 || (!options.force && rail.scrollLeft > 4)) return;
       const addedWidth = rail.scrollWidth - previousScrollWidth;
       if (addedWidth <= 0) return;
       rail.scrollLeft = addedWidth;
       rail.scrollTo({ left: 0, behavior: "smooth" });
     },
 
     resetBlockRailPosition() {
       const rail = this.$refs.blockRail;
       if (!rail) return;
       rail.scrollLeft = 0;
     },
 
     selectBlock(block) {
       this.selectedBlock = block;
     },
 
     openBurnLeaderRanksModal(block) {
       this.selectedBurnLeaderBlock = block;
     },
 
     closeBurnLeaderRanksModal() {
       this.selectedBurnLeaderBlock = null;
     },
 
     openBlockBytesModal(block) {
       this.selectedByteBlock = block;
     },
 
     closeBlockBytesModal() {
       this.selectedByteBlock = null;
     },
 
     openTransactionModal(tx, context = {}) {
       this.selectedTransaction = { tx, context };
     },
 
     closeTransactionModal() {
       this.selectedTransaction = null;
     },
 
     openWalletUtxosModal() {
       this.showWalletUtxos = true;
     },
 
     closeWalletUtxosModal() {
       this.showWalletUtxos = false;
     },
 
     openPowDifficultyInfo() {
       this.showPowDifficultyInfo = true;
     },
 
     closePowDifficultyInfo() {
       this.showPowDifficultyInfo = false;
     },
 
     openChainResetModal() {
       this.chainResetConfirm = "";
       this.chainResetModalOpen = true;
     },
 
     closeChainResetModal() {
       if (this.chainResetBusy) return;
       this.chainResetModalOpen = false;
       this.chainResetConfirm = "";
     },
 
     async resetLocalChain() {
       if (this.chainResetConfirm.trim() !== "RESET") {
         this.showFlash("Type RESET to confirm deleting the local chain", "error");
         return;
       }
       this.chainResetBusy = true;
       try {
         await this.submitForm("/api/settings/chain-reset", {
           confirm: this.chainResetConfirm,
         });
         this.blocks = [];
         this.selectedBlock = null;
         this.selectedByteBlock = null;
         this.selectedBurnLeaderBlock = null;
         this.selectedTransaction = null;
         this.mempool = [];
         this.walletTxs = [];
         this.walletUtxos = [];
         this.mempoolFirstSeenHeights = {};
         this.mempoolFirstSeenAt = {};
         this.mempoolSeenInitialized = false;
         this.lastBlockMempoolHeight = null;
         this.resetPageState("walletTx");
         this.resetPageState("walletUtxo");
         this.resetPageState("mempool");
         this.chainResetModalOpen = false;
         this.chainResetConfirm = "";
         await this.refresh({ force: true });
         this.showFlash("Local chain deleted. Sync requested from peers.", "success");
       } catch (error) {
         this.showFlash(error.message, "error");
       } finally {
         this.chainResetBusy = false;
       }
     },
 
     closeModals() {
       this.closeTransactionModal();
       this.closeWalletUtxosModal();
       this.closePowDifficultyInfo();
       this.closeBurnLeaderRanksModal();
       this.closeChainResetModal();
     },
 
     async loadOlderBlocks() {
       if (!this.canUseProtectedApi()) return;
       if (this.loadingOlder || !this.hasMoreBlocks || this.blocks.length === 0) return;
       const oldest = Math.min(...this.blocks.map((block) => block.height));
       if (oldest <= 0) {
         this.hasMoreBlocks = false;
         return;
       }
       this.loadingOlder = true;
       try {
         const older = await this.fetchJson(
           `/api/blocks?before_height=${oldest}&limit=${this.blockPageSize}`
         );
         if (
           older.length === 0 ||
           older.length < this.blockPageSize ||
           older.some((block) => block.height === 0)
         ) {
           this.hasMoreBlocks = false;
         }
         this.mergeFreshBlocks(older);
       } catch (error) {
         this.showFlash(error.message, "error");
       } finally {
         this.loadingOlder = false;
       }
     },
 
     maybeLoadOlderBlocks(event) {
       this.maybeLoadOlderBlocksFromRail(event.currentTarget);
     },
 
     maybeLoadOlderBlocksFromRail(rail = this.$refs.blockRail) {
       if (this.tab !== "chain" || !rail || this.loadingOlder || !this.hasMoreBlocks) return;
       const remaining = rail.scrollWidth - rail.scrollLeft - rail.clientWidth;
       if (remaining <= 180) {
         this.loadOlderBlocks();
       }
     },
 
     async postForm(path, fields, successMessage, method = "POST") {
       await this.submitForm(path, fields, method);
       await this.refresh({ force: true });
       this.showFlash(successMessage, "success");
     },
 
     async submitForm(path, fields, method = "POST") {
       const body = new URLSearchParams();
       for (const [key, value] of Object.entries(fields)) {
         if (Array.isArray(value)) {
           for (const item of value) body.append(key, item);
         } else {
           body.set(key, value);
         }
       }
       const response = await this.fetchWithTimeout(path, {
         method,
         headers: { Accept: "application/json", "Content-Type": "application/x-www-form-urlencoded" },
         body,
       });
       const text = await response.text();
       let payload = { ok: response.ok, error: null };
       if (text) {
         try {
           payload = JSON.parse(text);
         } catch {
           payload = { ok: false, error: text };
         }
       }
       if (!response.ok || !payload.ok) {
         throw new Error(payload?.error || `${path} returned ${response.status}`);
       }
       return payload;
     },
 
     scheduleFeeEstimates() {
       if (this.feeEstimateTimer) clearTimeout(this.feeEstimateTimer);
       this.feeEstimateTimer = setTimeout(() => this.refreshFeeEstimates(), 220);
     },
 
     async refreshFeeEstimates() {
       if (this.showingAuth()) return;
       if (this.tab === "wallet") {
         await this.refreshTransferFeeEstimate();
         return;
       }
       if (this.tab === "mining") {
         await Promise.all([
           this.refreshBurnFeeEstimate(),
           this.refreshMineFeeEstimate(),
         ]);
       }
     },
 
     async refreshBurnFeeEstimate() {
       const amount = this.parseiunaAmount(this.burnAmountDraft);
       const feePerByte = this.parseiunaAmount(this.burnFeeDraft);
       if (amount <= 0) {
         this.feeEstimates.burn = null;
         return;
       }
       this.feeEstimates.burn = await this.fetchFeeEstimate("/api/fee-estimate/burn", {
         amount,
         fee_per_byte: feePerByte,
       });
     },
 
     async refreshMineFeeEstimate() {
       this.feeEstimates.mine = await this.fetchFeeEstimate("/api/fee-estimate/mine", {});
     },
 
     async refreshTransferFeeEstimate() {
       const amount = this.parseiunaAmount(this.transferAmount);
       const feePerByte = this.parseiunaAmount(this.transferFee);
       if (!this.transferTo.trim() || amount <= 0) {
         this.feeEstimates.transfer = null;
         return;
       }
       this.feeEstimates.transfer = await this.fetchFeeEstimate("/api/fee-estimate/transfer", {
         to: this.transferTo,
         amount,
         fee_per_byte: feePerByte,
         utxos: this.selectedTransferUtxos.join("\n"),
       });
     },
 
     async fetchFeeEstimate(path, fields) {
       try {
         const body = new URLSearchParams();
         for (const [key, value] of Object.entries(fields)) body.set(key, value);
         const response = await this.fetchWithTimeout(path, {
           method: "POST",
           headers: { Accept: "application/json", "Content-Type": "application/x-www-form-urlencoded" },
           body,
         });
         const payload = await response.json();
         if (!response.ok || !payload.ok) {
           return { error: payload.error || `${path} returned ${response.status}` };
         }
         return payload;
       } catch (error) {
         return { error: error.message };
       }
     },
 
     feeEstimateLabel(kind) {
       const estimate = this.feeEstimates[kind];
       if (!estimate) return "Enter details to estimate fee";
       if (estimate.error) return estimate.error;
       return `${estimate.bytes} bytes -> IUNA ${this.amountLabel(estimate.fee)}`;
     },
 
     async saveBurn() {
       try {
         const amount = this.parseiunaAmount(this.burnAmountDraft);
         const fee = this.parseiunaAmountRequired(this.burnFeeDraft, "Burn fee per byte is required");
         if (amount === 0) {
           throw new Error("IUNA per block must be greater than zero");
         }
         this.burnAmountDraft = this.amountLabel(amount);
         this.burnFeeDraft = this.amountLabel(fee);
         await this.postForm(
           "/api/settings/burn-per-block",
           { enabled: this.miningEnabled, amount, fee_per_byte: fee },
           this.miningEnabled
             ? `Finalization burns on: ${this.amountLabel(amount)} IUNA per block with ${this.amountLabel(fee)} per byte`
             : `Burn settings saved while off`
         );
         this.appendMiningEvent("Burn settings saved", `Configured ${this.amountLabel(amount)} IUNA per block with ${this.amountLabel(fee)} IUNA fee/byte.`, "info");
         this.burnAmountDirty = false;
         this.burnAmount = amount;
         this.burnFee = fee;
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     async setMiningEnabled(enabled) {
       const previous = this.miningEnabled;
       try {
         const amount = this.parseiunaAmount(this.burnAmountDraft);
         const fee = this.parseiunaAmountRequired(this.burnFeeDraft, "Burn fee per byte is required");
         if (enabled && amount === 0) {
           this.miningEnabled = false;
           throw new Error("Set IUNA per block before turning finalization burns on");
         }
         this.miningEnabled = enabled;
         await this.postForm(
           "/api/settings/burn-per-block",
           { enabled, amount, fee_per_byte: fee },
           enabled ? "Finalization burns turned on" : "Finalization burns turned off"
         );
         this.appendMiningEvent(
           enabled ? "Finalization burns turned on" : "Finalization burns turned off",
           enabled
             ? `Burning ${this.amountLabel(amount)} IUNA per block with ${this.amountLabel(fee)} IUNA fee/byte.`
             : "Automatic burn preparation paused.",
           enabled ? "active" : "warning"
         );
         this.miningEventState.pob = enabled ? "on" : "off";
         this.burnAmountDirty = false;
         this.burnAmount = amount;
         this.burnFee = fee;
       } catch (error) {
         this.miningEnabled = previous;
         this.showFlash(error.message, "error");
       }
     },
 
     async setPowMiningEnabled(enabled) {
       const previous = this.powMiningEnabled;
       try {
         this.powMiningEnabled = enabled;
         await this.postForm(
           "/api/settings/pow-mining",
           { enabled, workers: this.powMiningWorkers },
           enabled ? "PoW mining turned on" : "PoW mining turned off"
         );
         this.appendMiningEvent(
           enabled ? "PoW mining turned on" : "PoW mining turned off",
           enabled
             ? `Resource budget: ${this.powMiningWorkers} worker${this.powMiningWorkers === 1 ? "" : "s"}.`
             : "PoW worker search paused.",
           enabled ? "active" : "warning"
         );
         this.miningEventState["pow-workers"] = String(this.powMiningWorkers);
       } catch (error) {
         this.powMiningEnabled = previous;
         this.showFlash(error.message, "error");
       }
     },
 
     async setPowMiningWorkers(workers) {
       const previous = this.powMiningWorkers;
       const parsed = Number.parseInt(workers, 10);
       const clamped = Math.min(
         this.maxPowMiningWorkers,
         Math.max(1, Number.isFinite(parsed) ? parsed : 1)
       );
       try {
         this.powMiningWorkers = clamped;
         await this.postForm(
           "/api/settings/pow-mining",
           { enabled: this.powMiningEnabled, workers: clamped },
           `PoW workers set to ${clamped}`
         );
         this.appendMiningEvent(
           "PoW worker budget changed",
           `Resource budget: ${clamped} worker${clamped === 1 ? "" : "s"}.`,
           "info"
         );
         this.miningEventState["pow-workers"] = String(clamped);
       } catch (error) {
         this.powMiningWorkers = previous;
         this.showFlash(error.message, "error");
       }
     },
 
     async setKeepTrackOfMetrics(enabled) {
       const previous = this.keepTrackOfMetrics;
       try {
         this.keepTrackOfMetrics = enabled;
         await this.postForm(
           "/api/settings/metrics",
           { enabled },
           enabled ? "Metrics tracking turned on" : "Metrics tracking turned off"
         );
         await this.refreshConfig();
         if (!enabled && this.tab === "metrics") {
           this.setTab("settings");
         }
       } catch (error) {
         this.keepTrackOfMetrics = previous;
         this.showFlash(error.message, "error");
       }
     },
 
     async setRecoveryVdfTopRankPercent(percent) {
       const previous = this.recoveryVdfTopRankPercent;
       const normalized = Math.max(0, Math.min(100, Math.round(Number(percent) || 0)));
       try {
         this.recoveryVdfTopRankPercent = normalized;
         await this.postForm(
           "/api/settings/recovery-vdf",
           { top_rank_percent: String(normalized) },
           `Recovery VDF threshold set to top ${normalized}%`
         );
         await this.refreshConfig();
       } catch (error) {
         this.recoveryVdfTopRankPercent = previous;
         this.showFlash(error.message, "error");
       }
     },
 
     async setP2pAcceptInbound(enabled) {
       const previous = this.p2pAcceptInbound;
       try {
         this.p2pAcceptInbound = enabled;
         await this.postForm(
           "/api/settings/p2p-inbound",
           { enabled, bind_port: this.p2pBindPortValue() },
           enabled ? "Public node setting saved" : "Switched to outbound-only P2P"
         );
         this.p2pBindPortDirty = false;
         await this.refreshConfig();
       } catch (error) {
         this.p2pAcceptInbound = previous;
         this.showFlash(error.message, "error");
       }
     },
 
     p2pBindPortValue() {
       const port = Number(this.p2pBindPort);
       if (!Number.isInteger(port) || port < 1 || port > 65535) {
         throw new Error("P2P bind port must be between 1 and 65535");
       }
       return port;
     },
 
     p2pConfiguredBindAddr() {
       const port = Number(this.config.p2p_bind_port || 9444);
       if (!Number.isInteger(port) || port < 1 || port > 65535) return null;
       return `0.0.0.0:${port}`;
     },
 
     p2pRestartRequired() {
       const runtimeActive = this.config.p2p_inbound_runtime_active === true;
       if (this.p2pAcceptInbound !== runtimeActive) return true;
       if (!this.p2pAcceptInbound) return false;
       const configured = this.p2pConfiguredBindAddr();
       return configured ? this.config.p2p_runtime_bind_addr !== configured : false;
     },
 
     p2pRestartMessage() {
       if (!this.p2pRestartRequired()) return "";
       if (!this.p2pAcceptInbound && this.config.p2p_inbound_runtime_active === true) {
         return "Restart iuna to close the public P2P listener.";
       }
       const configured = this.p2pConfiguredBindAddr();
       return `Restart iuna to open public P2P on ${configured || "the configured bind port"}.`;
     },
 
     async saveP2pAnnounce() {
       if (!this.p2pAcceptInbound) {
         this.showFlash("Enable public node before setting a public P2P address", "error");
         return;
       }
       const addr = this.p2pAnnounceAddr.trim();
       try {
         if (this.p2pBindPortDirty) {
           await this.submitForm("/api/settings/p2p-inbound", {
             enabled: true,
             bind_port: this.p2pBindPortValue(),
           });
           this.p2pBindPortDirty = false;
         }
         await this.postForm(
           "/api/settings/p2p-announce",
           { addr },
           addr ? "P2P announce address saved" : "P2P announce address cleared"
         );
         this.p2pAnnounceAddr = addr;
         this.p2pAnnounceDirty = false;
         await this.refreshConfig();
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     automaticBurnFeeDraft() {
       return this.parseiunaAmount(this.burnFeeDraft);
     },
 
     powMineReward() {
       return Math.max(0, Math.trunc(Number(this.status.chain?.mine_reward ?? 1000000)));
     },
 
     pobStatusLabel() {
       const mining = this.status.mining;
       if (!mining) return "-";
       if (this.status.wallet_locked) return "Wallet locked";
       if (!mining.automatic) return "Off";
       if ((mining.burn_per_block ?? 0) <= 0) return "Anchor only";
       if (mining.wallet_is_current_leader) return "Selected";
       if (mining.current_leader) return "Waiting";
       return "Recovery standby";
     },
 
     powStatusShortLabel() {
       if (this.status.wallet_locked) return "Wallet locked";
       if (!this.powMiningEnabled) return "Off";
       const status = this.status.mining?.last_auto_pow_mine_status || "";
       if (status.includes("queued")) return "Queued";
       if (status.includes("searched")) return "Searching";
       if (status.includes("waiting")) return "Waiting";
       if (status.includes("failed")) return "Error";
       return `${this.powMiningWorkers} worker${this.powMiningWorkers === 1 ? "" : "s"}`;
     },
 
     autoPowStatusLabel() {
       if (!this.powMiningEnabled) return "PoW mining is off";
       const status =
         this.status.mining?.last_auto_pow_mine_status || "Waiting for next automatic PoW mining tick";
       return `${status} (${this.powMiningWorkers} worker${this.powMiningWorkers === 1 ? "" : "s"})`;
     },
 
     currentFinalizerLabel() {
       const leader = this.status.mining?.current_leader ?? this.status.chain?.next_leader;
       if (!leader) return "-";
       if (leader === this.status.wallet_address) return "you";
       return this.shortAddressLabel(leader);
     },
 
     localMiningMempoolLabel() {
       const pending = this.status.chain?.pending_transactions;
       if (typeof pending !== "number") return "-";
       const visibleMines = this.localMineActionCount();
       return `${pending} pending / ${visibleMines} visible mines`;
     },
 
     powDifficultyLabel() {
       return this.status.chain?.current_mine_difficulty_bits ?? this.status.launch_profile?.mine_difficulty_bits ?? "-";
     },
 
     localMineActionCount() {
       return this.mempool.filter((tx) => tx?.kind === "mine").length;
     },
 
     appendMiningEvent(title, detail, kind = "info", timestamp = new Date()) {
       const last = this.miningEvents[0];
       if (last?.title === title && last?.detail === detail && last?.kind === kind) return;
       this.miningEventCounter += 1;
       const entry = {
         key: `${timestamp.getTime()}-${this.miningEventCounter}`,
         timestamp,
         time: timestamp.toLocaleTimeString(),
         kind,
         title,
         detail,
       };
       this.miningEvents = [entry, ...this.miningEvents].slice(0, this.miningEventLimit);
     },
 
     isPowMineSuccessStatus(status) {
       return /queued mine action/i.test(status || "");
     },
 
     syncMiningEvents({ status, blocks }) {
       const mining = status?.mining || {};
       const chain = status?.chain || {};
       if (!this.miningEventState.started) {
         this.appendMiningEvent(
           "Mining log started",
           `Height ${chain.height ?? "-"}, PoB ${mining.automatic ? "on" : "off"}, PoW ${mining.pow_mining_enabled ? "on" : "off"}.`,
           "info"
         );
         this.miningEventState.started = true;
       }
 
       this.noteMiningStateChange(
         "pob",
         mining.automatic ? "on" : "off",
         mining.automatic ? "Finalization burns active" : "Finalization burns inactive",
         mining.automatic
           ? `Burning ${this.amountLabel(mining.burn_per_block || 0)} IUNA per block with ${this.amountLabel(mining.automatic_burn_fee || 0)} IUNA fee/byte.`
           : "Automatic burn preparation is off.",
         mining.automatic ? "active" : "warning"
       );
       this.noteMiningStateChange(
         "pow-workers",
         String(mining.pow_mining_workers ?? this.powMiningWorkers),
         "PoW worker budget",
         `Resource budget: ${mining.pow_mining_workers ?? this.powMiningWorkers} worker${(mining.pow_mining_workers ?? this.powMiningWorkers) === 1 ? "" : "s"}.`,
         "info"
       );
       const powMineStatus = mining.last_auto_pow_mine_status || "";
       if (this.isPowMineSuccessStatus(powMineStatus)) {
         this.noteMiningStateChange(
           "pow-mine-success",
           powMineStatus,
           "You mined a PoW action",
           `${powMineStatus}. Waiting for a finalizer to include it in a block.`,
           "active"
         );
       } else {
         this.noteMiningStateChange(
           "pow-status",
           powMineStatus,
           "PoW status",
           powMineStatus || "Waiting for next automatic PoW mining tick.",
           mining.pow_mining_enabled ? "active" : "info"
         );
       }
       this.noteMiningStateChange(
         "leader",
         mining.current_leader || "",
         mining.wallet_is_current_leader ? "This wallet is selected" : "Selected finalizer changed",
         mining.current_leader
           ? `Current finalizer: ${this.currentFinalizerLabel()} at height ${chain.height ?? "-"}.`
           : `No current finalizer reported at height ${chain.height ?? "-"}.`,
         mining.wallet_is_current_leader ? "active" : "info"
       );
       if (typeof mining.last_auto_burn_height === "number") {
         this.noteMiningStateChange(
           "last-burn-height",
           String(mining.last_auto_burn_height),
           `Automatic burn prepared at height ${mining.last_auto_burn_height}`,
           "Eligible for the next block opportunity.",
           "active"
         );
       }
 
       const latestBlock = Array.isArray(blocks)
         ? blocks.find((block) => Number(block?.height) > 0)
         : this.blocks.find((block) => Number(block?.height) > 0);
       if (latestBlock) {
         const finalizer = this.addressLabel(latestBlock.miner);
         const locallyFinalized = latestBlock.miner === status.wallet_address;
         if (locallyFinalized) {
           this.noteMiningStateChange(
             "latest-local-block",
             latestBlock.hash || String(latestBlock.height),
             `You finalized block ${latestBlock.height}`,
             `Success. ${this.burnCountLabel(latestBlock)} burned, fees IUNA ${this.amountLabel(latestBlock.total_fees ?? latestBlock.totalFees ?? 0)}.`,
             "active",
             new Date(Number(latestBlock.timestamp_ms ?? latestBlock.timestampMs) || Date.now())
           );
         }
         if (!locallyFinalized) {
           this.noteMiningStateChange(
             "latest-block",
             latestBlock.hash || String(latestBlock.height),
             `Observed block ${latestBlock.height}`,
             `Finalized by ${finalizer}. ${this.burnCountLabel(latestBlock)} burned, fees IUNA ${this.amountLabel(latestBlock.total_fees ?? latestBlock.totalFees ?? 0)}.`,
             "active",
             new Date(Number(latestBlock.timestamp_ms ?? latestBlock.timestampMs) || Date.now())
           );
         }
       }
     },
 
     noteMiningStateChange(key, value, title, detail, kind = "info", timestamp = new Date()) {
       if (this.miningEventState[key] === value) return;
       this.miningEventState[key] = value;
       if (value === "" && key !== "pow-status" && key !== "leader") return;
       this.appendMiningEvent(title, detail, kind, timestamp);
     },
 
     miningEventLog() {
       return this.miningEvents;
     },
 
     metricsCharts() {
       return Array.isArray(this.blockchainMetrics?.charts) ? this.blockchainMetrics.charts : [];
     },
 
     metricsLatest() {
       return this.blockchainMetrics?.latest || {};
     },
 
     metricsPath(range = this.metricsRange) {
       return range === "all" ? "/api/metrics" : `/api/metrics?limit=${range}`;
     },
 
     setMetricsRange(range) {
       this.metricsRange = range === 1000 || range === "all" ? range : 100;
       this.metricHover = null;
       try {
         localStorage.setItem("iunaMetricsRange", String(this.metricsRange));
       } catch {
         // Non-persistent filtering is fine when storage is unavailable.
       }
       if (this.tab === "metrics") {
         this.refreshMetrics();
       }
     },
 
     async fetchMetricsResponse(range = this.metricsRange) {
       return this.prepareMetricsResponse(await this.fetchJson(this.metricsPath(range)));
     },
 
     async refreshMetrics(options = {}) {
       if (!this.canUseProtectedApi()) return this.blockchainMetrics;
       const requestId = ++this.metricsRequestSeq;
       const range = this.metricsRange;
       if (this.metricsCharts().length === 0 && options.silent !== true) {
         this.loadingMetrics = true;
       }
       try {
         const metrics = await this.fetchMetricsResponse(range);
         if (requestId === this.metricsRequestSeq && this.metricsRange === range) {
           this.blockchainMetrics = metrics;
         }
         return metrics;
       } catch (error) {
         if (options.silent !== true) this.showFlash(error.message, "error");
         return this.blockchainMetrics;
       } finally {
         if (requestId === this.metricsRequestSeq) {
           this.loadingMetrics = false;
         }
       }
     },
 
     prepareMetricsResponse(metrics) {
       const charts = Array.isArray(metrics?.charts)
         ? metrics.charts.map((chart) => this.prepareMetricChart(chart))
         : [];
       return { ...(metrics || {}), charts };
     },
 
     prepareMetricChart(chart) {
       const points = this.metricValidPoints(chart);
       const bounds = this.metricChartBoundsForPoints(points);
       const yTicks = this.metricYAxisTicksForPoints(points);
       const xTicks = this.metricXAxisTicksForPoints(points);
       const linePoints = points
         .map((point) => {
           const x = this.metricXAxisPositionFromBounds(bounds, Number(point.height));
           const y = this.metricYAxisPositionFromBounds(bounds, Number(point.value));
           return `${x.toFixed(1)},${y.toFixed(1)}`;
         })
         .join(" ");
       const markers = points.map((point) => {
         const height = Number(point.height);
         const value = Number(point.value);
         return {
           height,
           value,
           x: this.metricXAxisPositionFromBounds(bounds, height),
           y: this.metricYAxisPositionFromBounds(bounds, value),
         };
       });
       const gridPath = [
         ...yTicks.map((tick) => {
           const y = this.metricYAxisPositionFromBounds(bounds, Number(tick)).toFixed(1);
           return `M4 ${y} H296`;
         }),
         ...xTicks.map((tick) => {
           const x = this.metricXAxisPositionFromBounds(bounds, Number(tick)).toFixed(1);
           return `M${x} 8 V132`;
         }),
       ].join(" ");
       return {
         ...chart,
         _visiblePoints: points,
         _bounds: bounds,
         _yTicks: yTicks,
         _xTicks: xTicks,
         _linePoints: linePoints,
         _markers: markers,
         _gridPath: gridPath,
       };
     },
 
     metricChartPoints(chart) {
       return chart?._linePoints || "";
     },
 
     metricChartPointMarkers(chart) {
       return chart?._markers || [];
     },
 
     metricGridPath(chart) {
       return chart?._gridPath || "";
     },
 
     metricValidPoints(chart) {
       const points = Array.isArray(chart?.points) ? chart.points : [];
       return points.filter((point) => Number.isFinite(Number(point.value)));
     },
 
     metricVisiblePoints(chart) {
       return chart?._visiblePoints || this.metricValidPoints(chart);
     },
 
     metricLatestValueLabel(chart) {
       const points = this.metricVisiblePoints(chart);
       if (points.length === 0) return "-";
       return this.metricValueLabel(chart, points[points.length - 1].value);
     },
 
     metricChartBounds(chart) {
       return chart?._bounds || this.metricChartBoundsForPoints(this.metricVisiblePoints(chart));
     },
 
     metricChartBoundsForPoints(points) {
       if (points.length === 0) {
         return { minHeight: 0, maxHeight: 1, minValue: 0, maxValue: 1 };
       }
       const heights = points.map((point) => Number(point.height));
       const values = points.map((point) => Number(point.value));
       const valueTicks = this.niceTicks(Math.min(...values), Math.max(...values), 5);
       return {
         minHeight: Math.min(...heights),
         maxHeight: Math.max(...heights),
         minValue: Math.min(...valueTicks),
         maxValue: Math.max(...valueTicks),
       };
     },
 
     metricYAxisTicks(chart) {
       return chart?._yTicks || this.metricYAxisTicksForPoints(this.metricVisiblePoints(chart));
     },
 
     metricYAxisTicksForPoints(points) {
       if (points.length === 0) return [];
       const values = points.map((point) => Number(point.value));
       return this.niceTicks(Math.min(...values), Math.max(...values), 5).reverse();
     },
 
     metricXAxisTicks(chart) {
       return chart?._xTicks || this.metricXAxisTicksForPoints(this.metricVisiblePoints(chart));
     },
 
     metricXAxisTicksForPoints(points) {
       if (points.length === 0) return [];
       const heights = points.map((point) => Number(point.height));
       const minHeight = Math.min(...heights);
       const maxHeight = Math.max(...heights);
       if (minHeight === maxHeight) return [minHeight];
       return this.niceTicks(minHeight, maxHeight, 5)
         .map((tick) => Math.round(tick))
         .filter((tick) => tick >= minHeight && tick <= maxHeight)
         .filter((tick, index, ticks) => ticks.indexOf(tick) === index);
     },
 
     niceTicks(minValue, maxValue, maxTicks = 5) {
       const min = Number(minValue);
       const max = Number(maxValue);
       if (!Number.isFinite(min) || !Number.isFinite(max)) return [];
       if (min === max) {
         if (min === 0) return [0];
         const step = this.niceTickStep(Math.abs(min) / Math.max(1, maxTicks - 1));
         const tickMin = Math.floor(Math.min(0, min) / step) * step;
         const tickMax = Math.ceil(max / step) * step;
         return this.tickRange(tickMin, tickMax, step);
       }
       const range = this.niceTickStep((max - min) / Math.max(1, maxTicks - 1));
       const tickMin = Math.floor(min / range) * range;
       const tickMax = Math.ceil(max / range) * range;
       return this.tickRange(tickMin, tickMax, range);
     },
 
     niceTickStep(value) {
       if (!Number.isFinite(value) || value <= 0) return 1;
       const exponent = Math.floor(Math.log10(value));
       const fraction = value / Math.pow(10, exponent);
       const niceFraction = fraction <= 1 ? 1 : fraction <= 2 ? 2 : fraction <= 5 ? 5 : 10;
       return niceFraction * Math.pow(10, exponent);
     },
 
     tickRange(min, max, step) {
       if (!Number.isFinite(step) || step <= 0) return [];
       const precision = Math.max(0, Math.ceil(-Math.log10(step)) + 2);
       const ticks = [];
       for (let tick = min; tick <= max + step / 2; tick += step) {
         ticks.push(Number(tick.toFixed(precision)));
         if (ticks.length > 8) break;
       }
       return ticks;
     },
 
     metricYAxisPositionFromBounds(bounds, value) {
       const valueRange = Math.max(1, bounds.maxValue - bounds.minValue);
       return 132 - ((value - bounds.minValue) / valueRange) * 124;
     },
 
     metricXAxisPositionFromBounds(bounds, height) {
       const heightRange = Math.max(1, bounds.maxHeight - bounds.minHeight);
       return 4 + ((height - bounds.minHeight) / heightRange) * 292;
     },
 
     metricYAxisLabelStyle(chart, value) {
       const y = this.metricYAxisPositionFromBounds(this.metricChartBounds(chart), Number(value));
       return `top: ${(y / 148) * 100}%`;
     },
 
     metricXAxisLabelStyle(chart, height) {
       const x = this.metricXAxisPositionFromBounds(this.metricChartBounds(chart), Number(height));
       return `left: ${(x / 300) * 100}%`;
     },
 
     metricHoverPointStyle(chart) {
       const hover = this.metricHover;
       if (!hover || hover.chartId !== chart.id) return "";
       return `left: ${(hover.x / 300) * 100}%; top: ${(hover.y / 148) * 100}%;`;
     },
 
     setMetricHover(chart, marker) {
       this.metricHover = {
         chartId: chart.id,
         height: marker.height,
         value: marker.value,
         x: marker.x,
         y: marker.y,
         label: this.metricPointLabel(chart, marker),
       };
     },
 
     setMetricHoverFromPlot(chart, event) {
       const markers = this.metricChartPointMarkers(chart);
       if (markers.length === 0) {
         this.clearMetricHover(chart);
         return;
       }
       const rect = event.currentTarget.getBoundingClientRect();
       const relativeX = Math.min(Math.max(event.clientX - rect.left, 0), rect.width);
       const chartX = (relativeX / Math.max(1, rect.width)) * 300;
       const nearest = markers.reduce((best, marker) => {
         const distance = Math.abs(marker.x - chartX);
         return !best || distance < best.distance ? { marker, distance } : best;
       }, null)?.marker;
       if (nearest) {
         this.setMetricHover(chart, nearest);
       }
     },
 
     clearMetricHover(chart) {
       if (this.metricHover?.chartId === chart.id) {
         this.metricHover = null;
       }
     },
 
     metricTooltipLabel(chart) {
       return this.metricHover?.chartId === chart.id ? this.metricHover.label : "";
     },
 
     metricTooltipStyle(chart) {
       const hover = this.metricHover;
       if (!hover || hover.chartId !== chart.id) return "";
       const left = (hover.x / 300) * 100;
       const top = (hover.y / 148) * 100;
       const xShift = hover.x > 238 ? "-100%" : hover.x < 62 ? "0" : "-50%";
       const yShift = hover.y < 34 ? "12px" : "-115%";
       return `left: ${left}%; top: ${top}%; transform: translate(${xShift}, ${yShift});`;
     },
 
     metricPointLabel(chart, point) {
       return `#${point.height}: ${this.metricValueLabel(chart, point.value)}`;
     },
 
     metricAxisValueLabel(chart, value) {
       const number = Number(value);
       if (!Number.isFinite(number)) return "-";
       if (chart?.valueKind === "seconds") return `${this.compactNumber(number)}s`;
       return this.compactNumber(number);
     },
 
     metricValueLabel(chart, value) {
       const number = Number(value);
       if (!Number.isFinite(number)) return "-";
       if (chart?.valueKind === "iuna") return `IUNA ${this.compactNumber(number)}`;
       if (chart?.valueKind === "seconds") return `${this.compactNumber(number)} s`;
       return `${this.compactNumber(number)}${chart?.unit ? ` ${chart.unit}` : ""}`;
     },
 
     compactNumber(value) {
       const number = Number(value);
       if (!Number.isFinite(number)) return "-";
       if (Math.abs(number) >= 1000) {
         return new Intl.NumberFormat(undefined, { maximumFractionDigits: 2 }).format(number);
       }
       if (Number.isInteger(number)) return String(number);
       return number.toFixed(6).replace(/0+$/, "").replace(/\.$/, "");
     },
 
     amountLabel(value) {
       const microiuna = Math.max(0, Math.trunc(Number(value) || 0));
       const whole = Math.floor(microiuna / 1000000);
       const fractional = String(microiuna % 1000000).padStart(6, "0").replace(/0+$/, "");
       return fractional ? `${whole}.${fractional}` : `${whole}`;
     },
 
     metricAmountLabel(value) {
       return value === null || value === undefined ? "-" : `IUNA ${this.amountLabel(value)}`;
     },
 
     amountNumber(value) {
       return Number(this.amountLabel(value));
     },
 
     parseiunaAmount(value) {
       const text = String(value ?? "").trim();
       if (!text) return 0;
       const match = text.match(/^(\d+)(?:\.(\d{0,6})\d*)?$/);
       if (!match) return 0;
       const whole = Number(match[1] || 0);
       const fractional = Number((match[2] || "").padEnd(6, "0"));
       return Math.max(0, Math.trunc(whole * 1000000 + fractional));
     },
 
     parseiunaAmountRequired(value, message) {
       const text = String(value ?? "").trim();
       if (!text) throw new Error(message);
       const parsed = this.parseiunaAmount(text);
       if (parsed === 0 && !/^0(?:\.0*)?$/.test(text)) throw new Error(message);
       return parsed;
     },
 
     async sendTransfer() {
       try {
         const amount = this.parseiunaAmount(this.transferAmount);
         const fee = this.parseiunaAmountRequired(this.transferFee, "Transfer fee per byte is required");
         const recipient = this.short(this.transferTo);
         await this.postForm(
           "/api/transfer",
           { to: this.transferTo, amount, fee_per_byte: fee, utxos: this.selectedTransferUtxos.join("\n") },
           `Queued transfer of ${this.amountLabel(amount)} IUNA to ${recipient}`
         );
         this.transferTo = "";
         this.transferAmount = null;
         this.selectedTransferUtxos = [];
         this.selectedTransferUtxoAmounts = {};
         this.showSendAdvanced = false;
         this.feeEstimates.transfer = null;
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     toggleSendAdvanced() {
       this.showSendAdvanced = !this.showSendAdvanced;
       if (!this.showSendAdvanced) {
         this.selectedTransferUtxos = [];
       }
     },
 
     async addPeer() {
       try {
         const peer = this.peerAddress.trim();
         await this.postForm("/api/peers", { peer }, `Added peer ${peer}`);
         this.peerAddress = "";
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     async removePeer(peer) {
       try {
         await this.postForm("/api/peers", { peer: peer.address }, `Removed peer ${peer.address}`, "DELETE");
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     addressBookEntries() {
       return Object.entries(this.addressBook || {})
         .map(([address, name]) => ({ address, name }))
         .sort((left, right) => left.name.localeCompare(right.name) || left.address.localeCompare(right.address));
     },
 
     validAddressBookAddress(address) {
       return /^[0-9a-fA-F]{64}$/.test(String(address ?? "").trim());
     },
 
     selectTransferContact(address) {
       if (!address) return;
       this.transferTo = address;
       this.scheduleFeeEstimates();
       this.closeAddressBookPicker();
     },
 
     openAddressBookModal(entry = null) {
       this.addressBookEditingAddress = entry?.address || null;
       this.addressBookDraftAddress = entry?.address || "";
       this.addressBookDraftName = entry?.name || "";
       this.addressBookPickerOpen = true;
       this.addressBookModalOpen = true;
     },
 
     closeAddressBookModal() {
       this.addressBookModalOpen = false;
       this.addressBookEditingAddress = null;
       this.addressBookDraftAddress = "";
       this.addressBookDraftName = "";
     },
 
     openAddressBookPicker() {
       this.addressBookPickerOpen = true;
     },
 
     closeAddressBookPicker() {
       this.addressBookPickerOpen = false;
       this.closeAddressBookModal();
     },
 
     async saveAddressBookEntry() {
       const address = this.addressBookDraftAddress.trim().toLowerCase();
       const name = this.addressBookDraftName.trim();
       if (!address || !name) {
         this.showFlash("Address and name are required", "error");
         return;
       }
       if (!this.validAddressBookAddress(address)) {
         this.showFlash("Address must be a 64 character hex public key", "error");
         return;
       }
       const oldAddress = this.addressBookEditingAddress;
       if (this.addressBook?.[address] && address !== oldAddress) {
         this.showFlash("Address is already saved", "error");
         return;
       }
       try {
         const fields = oldAddress ? { address, name, old_address: oldAddress } : { address, name };
         await this.submitForm("/api/address-book", fields);
         this.addressBookVersion += 1;
         const nextBook = { ...(this.addressBook || {}) };
         if (oldAddress && oldAddress !== address) delete nextBook[oldAddress];
         nextBook[address] = name;
         this.addressBook = nextBook;
         this.config = { ...this.config, address_book: this.addressBook };
         this.closeAddressBookModal();
         this.showFlash(`Saved ${name}`, "success");
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     editAddressBookEntry(entry) {
       this.openAddressBookModal(entry);
     },
 
     async removeAddressBookEntry(entry) {
       try {
         await this.submitForm("/api/address-book", { address: entry.address }, "DELETE");
         this.addressBookVersion += 1;
         const nextBook = { ...(this.addressBook || {}) };
         delete nextBook[entry.address];
         this.addressBook = nextBook;
         this.config = { ...this.config, address_book: nextBook };
         if (this.addressBookEditingAddress === entry.address) this.closeAddressBookModal();
         this.showFlash(`Removed ${entry.name}`, "success");
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     async copyAddress() {
       try {
         await navigator.clipboard.writeText(this.setupAddress());
         this.showFlash("Address copied", "success");
       } catch (error) {
         this.showFlash("Could not copy address", "error");
       }
     },
 
     showFlash(message, kind) {
       this.flash = { message, kind };
       if (this.flashTimer) {
         clearTimeout(this.flashTimer);
       }
       this.flashTimer = setTimeout(() => {
         this.flash = null;
         this.flashTimer = null;
       }, kind === "error" ? 7000 : 3500);
     },
 
     showSetupFeedback(message, kind) {
       this.setupFeedback = { message, kind };
     },
 
     showAuthFeedback(message, kind) {
       this.authFeedback = { message, kind };
     },
 
     showSettingsFeedback(message, kind) {
       this.settingsFeedback = { message, kind };
     },
 
     short(value) {
       if (!value) return "-";
       if (value.length <= 16) return value;
       return `${value.slice(0, 8)}...${value.slice(-8)}`;
     },
 
     addressName(address) {
       if (!address) return null;
       return this.addressBook?.[address] || null;
     },
 
     addressLabel(address) {
       return this.addressName(address) || address || "-";
     },
 
     shortAddressLabel(address) {
       return this.addressName(address) || this.short(address);
     },
 
     txFrom(tx) {
       return tx.from ?? tx.inputs?.[0]?.owner ?? "";
     },
 
     txTo(tx) {
       return tx.to ?? tx.outputs?.[0]?.address ?? null;
     },
 
     txAmount(tx) {
       return tx.amount ?? tx.outputs?.[0]?.amount ?? 0;
     },
 
     isMineTx(tx) {
       return tx?.kind === "mine";
     },
 
     isBlindedMempoolItem(tx) {
       return !tx?.revealed && (tx?.kind === "blinded" || tx?.kind === "reveal");
     },
 
     txFeeLabel(tx) {
       if (!tx?.revealed && tx?.kind === "reveal") return "unknown until reveal";
       return `IUNA ${this.amountLabel(tx?.fee ?? 0)}`;
     },
 
     txPillLabel(tx) {
       return tx?.revealed ? "revealed" : (tx?.kind || "-");
     },
 
     txPillClass(tx) {
       return tx?.revealed ? "revealed" : (tx?.kind || "");
     },
 
     txDifficultyBits(tx) {
       return tx?.difficulty_bits ?? tx?.difficultyBits ?? null;
     },
 
     txProofBits(tx) {
       return tx?.proof_bits ?? tx?.proofBits ?? null;
     },
 
     txProofHash(tx) {
       return tx?.proof_hash ?? tx?.proofHash ?? tx?.signature ?? null;
     },
 
     txInputs(tx) {
       return Array.isArray(tx.inputs) ? tx.inputs : [];
     },
 
     txVisualOutputs(tx) {
       const rows = [];
       if (tx.kind === "burn" && Number(tx.amount || 0) > 0) {
         rows.push({
           kind: "burned",
           label: "Burn",
           amount: tx.amount,
           address: null,
         });
       }
       if (Number(tx.fee || 0) > 0) {
         rows.push({
           kind: "fee",
           label: "Fee",
           amount: tx.fee,
           address: null,
           detailLabel: "To",
           detail: this.txFeeRecipient(tx),
         });
       }
       const directOutputs = Array.isArray(tx.outputs) ? tx.outputs : [];
       for (const [index, output] of directOutputs.entries()) {
         rows.push({
           kind: "output",
           label: `Output ${index + 1}`,
           amount: output.amount,
           address: output.address,
         });
       }
       const changeOutputs = Array.isArray(tx.change) ? tx.change : [];
       for (const [index, output] of changeOutputs.entries()) {
         rows.push({
           kind: "change",
           label: `Change ${index + 1}`,
           amount: output.amount,
           address: output.address,
         });
       }
       return rows;
     },
 
     txInputKey(input, index) {
       return `${input.outpoint?.txid || "input"}:${input.outpoint?.index ?? index}`;
     },
 
     txOutputKey(output, index) {
       return `${output.kind}:${output.address || output.kind}:${output.amount}:${index}`;
     },
 
     txInputOutpoint(input) {
       const txid = input.outpoint?.txid || "-";
       const index = input.outpoint?.index ?? "-";
       return `${txid}:${index}`;
     },
 
     utxoOutpoint(utxo) {
       return this.txInputOutpoint({ outpoint: utxo.outpoint });
     },
 
     spendableWalletUtxos() {
       return this.walletUtxos.filter((utxo) => utxo.spendable !== false);
     },
 
     rememberUtxoAmounts(utxos) {
       for (const utxo of utxos || []) {
         this.selectedTransferUtxoAmounts[this.utxoOutpoint(utxo)] = Number(utxo.amount || 0);
       }
     },
 
     pruneSelectedTransferUtxos() {
       const visible = new Map(this.walletUtxos.map((utxo) => [this.utxoOutpoint(utxo), utxo]));
       this.selectedTransferUtxos = this.selectedTransferUtxos.filter((outpoint) => {
         const utxo = visible.get(outpoint);
         return !utxo || utxo.spendable !== false;
       });
       if (this.lastSelectedTransferUtxo && !this.selectedTransferUtxos.includes(this.lastSelectedTransferUtxo)) {
         this.lastSelectedTransferUtxo = null;
       }
     },
 
     toggleTransferUtxoSelection(event, utxo) {
       const outpoint = this.utxoOutpoint(utxo);
       if (!utxo || utxo.spendable === false || !outpoint) {
         this.scheduleFeeEstimates();
         return;
       }
 
       this.rememberUtxoAmounts([utxo]);
       const spendable = this.spendableWalletUtxos();
       const outpoints = spendable.map((item) => this.utxoOutpoint(item));
       const currentIndex = outpoints.indexOf(outpoint);
       const anchorIndex = this.lastSelectedTransferUtxo
         ? outpoints.indexOf(this.lastSelectedTransferUtxo)
         : -1;
 
       const selected = new Set(this.selectedTransferUtxos);
       const checked = !selected.has(outpoint);
       if (event?.shiftKey && anchorIndex >= 0 && currentIndex >= 0) {
         const [from, to] = [anchorIndex, currentIndex].sort((left, right) => left - right);
         const range = spendable.slice(from, to + 1);
         this.rememberUtxoAmounts(range);
         for (const item of range) {
           const itemOutpoint = this.utxoOutpoint(item);
           if (checked) {
             selected.add(itemOutpoint);
           } else {
             selected.delete(itemOutpoint);
           }
         }
       } else if (checked) {
         selected.add(outpoint);
       } else {
         selected.delete(outpoint);
       }
       this.selectedTransferUtxos = Array.from(selected);
 
       this.lastSelectedTransferUtxo = outpoint;
       this.scheduleFeeEstimates();
     },
 
     async selectAllTransferUtxos() {
       try {
         const utxos = await this.fetchJson("/api/wallet/utxos/selectable");
         this.rememberUtxoAmounts(utxos);
         this.selectedTransferUtxos = utxos.map((utxo) => this.utxoOutpoint(utxo));
         this.lastSelectedTransferUtxo =
           this.selectedTransferUtxos[this.selectedTransferUtxos.length - 1] || null;
         this.scheduleFeeEstimates();
         if (this.selectedTransferUtxos.length === 0) {
           this.showFlash("No spendable UTXOs", "error");
         }
       } catch (error) {
         this.showFlash(error.message, "error");
       }
     },
 
     clearTransferUtxos() {
       this.selectedTransferUtxos = [];
       this.selectedTransferUtxoAmounts = {};
       this.lastSelectedTransferUtxo = null;
       this.scheduleFeeEstimates();
     },
 
     selectedTransferUtxoTotal() {
       return this.selectedTransferUtxos.reduce((sum, outpoint) => {
         return sum + Number(this.selectedTransferUtxoAmounts[outpoint] || 0);
       }, 0);
     },
 
     transferRequiredTotal() {
       return this.parseiunaAmount(this.transferAmount) + Number(this.feeEstimates.transfer?.fee || 0);
     },
 
     selectedTransferUtxosCoverTransfer() {
       return this.selectedTransferUtxos.length === 0 || this.selectedTransferUtxoTotal() >= this.transferRequiredTotal();
     },
 
     txInputAmountLabel(input) {
       return input.amount === null || input.amount === undefined ? "-" : `IUNA ${this.amountLabel(input.amount)}`;
     },
 
     txFeeRecipient(tx) {
       const context = this.selectedTransaction?.context || {};
       const address = tx.blockFinalizer ?? tx.blockMiner ?? context.blockFinalizer ?? context.blockMiner;
       return address ? this.addressLabel(address) : "future block finalizer";
     },
 
     selectedTransactionLabel() {
       if (!this.selectedTransaction) return "-";
       const { tx, context } = this.selectedTransaction;
       if (context.blockHeight !== undefined) return `Block ${context.blockHeight}`;
       if (tx?.status === "pending") return "Wallet pending";
       if (tx?.blockHeight !== null && tx?.blockHeight !== undefined) {
         return `Wallet block ${tx.blockHeight}`;
       }
       return context.source || "-";
     },
 
     blockBurned(block) {
       return this.blockTransactions(block)
         .filter((tx) => tx.kind === "burn")
         .reduce((sum, tx) => sum + this.txAmount(tx), 0);
     },
 
     blockTotalFees(block) {
       const explicitTotal = block?.totalFees ?? block?.total_fees ?? block?.reward;
       if (explicitTotal !== null && explicitTotal !== undefined) return Number(explicitTotal) || 0;
       return this.blockTransactions(block).reduce((sum, tx) => sum + Number(tx.fee || 0), 0);
     },
 
     blockTimestampLabel(block) {
       const timestamp = Number(block?.timestamp_ms ?? block?.timestampMs);
       if (!Number.isFinite(timestamp)) return "-";
       return new Date(timestamp).toLocaleString();
     },
 
     blockTotalBytes(block) {
       return Number(block?.totalBytes ?? block?.total_bytes ?? 0);
     },
 
     blockPayloadBytes(block) {
       return (
         Number(block?.transactionBytes ?? block?.transaction_bytes ?? 0) +
         Number(block?.blindedTransactionBytes ?? block?.blinded_transaction_bytes ?? 0) +
         Number(block?.revealBundleBytes ?? block?.reveal_bundle_bytes ?? 0)
       );
     },
 
     blockByteBreakdown(block) {
       const transactionRows = this.blockTransactionByteBreakdown(block);
       return [
         ["Header and proof", Math.max(0, this.blockTotalBytes(block) - this.blockPayloadBytes(block)), ""],
         ...(transactionRows.length
           ? transactionRows
           : [["Transactions", Number(block?.transactionBytes ?? block?.transaction_bytes ?? 0), ""]]),
         ["Blinded commits", Number(block?.blindedTransactionBytes ?? block?.blinded_transaction_bytes ?? 0), "blinded"],
         ["Reveal bundles", Number(block?.revealBundleBytes ?? block?.reveal_bundle_bytes ?? 0), "reveal"],
       ];
     },
 
     blockTransactionByteBreakdown(block) {
       const rows = block?.transactionByteBreakdown ?? block?.transaction_byte_breakdown;
       if (!Array.isArray(rows)) return [];
       return rows
         .map((row) => {
           const label = row.label || row.kind || "transaction";
           return [label, Number(row.bytes ?? 0), label];
         })
         .filter((row) => row[1] > 0);
     },
 
     recentBlockFeeAverage(count) {
       const sample = this.blocks.filter((block) => block.height > 0).slice(0, count);
       if (sample.length === 0) return 0;
       return Math.round(sample.reduce((sum, block) => sum + this.blockTotalFees(block), 0) / sample.length);
     },
 
     blockBurnCount(block) {
       return this.blockTransactions(block).filter((tx) => tx.kind === "burn").length;
     },
 
     blockTransferCount(block) {
       return this.blockTransactions(block).filter((tx) => tx.kind === "transfer").length;
     },
 
     blockCommitCount(block) {
       return this.blockTransactions(block).filter((tx) => tx.kind === "blinded").length;
     },
 
     blockMineCount(block) {
       return this.blockTransactions(block).filter((tx) => tx.kind === "mine").length;
     },
 
     blockTransactions(block) {
       const transactions = block?.transactions || [];
       if (transactions.some((tx) => tx?.revealed)) return transactions;
       return [
         ...transactions,
         ...(block?.revealedTransactions || block?.revealed_transactions || []),
       ];
     },
 
     burnCountLabel(block) {
       const count = this.blockBurnCount(block);
       return `${count} burn${count === 1 ? "" : "s"}`;
     },
 
     transferCountLabel(block) {
       const count = this.blockTransferCount(block);
       return `${count} transfer${count === 1 ? "" : "s"}`;
     },
 
     commitCountLabel(block) {
       const count = this.blockCommitCount(block);
       return `${count} commit${count === 1 ? "" : "s"}`;
     },
 
     mineCountLabel(block) {
       const count = this.blockMineCount(block);
       return `${count} mine${count === 1 ? "" : "s"}`;
     },
 
     blockFinalizerLabel(block) {
       const finalizer = this.shortAddressLabel(block.miner);
       const owner = block.miner === this.status.wallet_address ? `${finalizer} (me)` : finalizer;
       return block.finalizer_mode === "recovery" ? `${owner} · Recovery` : owner;
     },
 
     burnLeaderRanks(block) {
       if (Array.isArray(block?.burn_leader_ranks)) return block.burn_leader_ranks;
       return Array.isArray(block?.burnLeaderRanks) ? block.burnLeaderRanks : [];
     },
 
     burnLeaderRanksTitle(block) {
       if (!block) return "Burn Leader Ranks";
       return `Block ${block.height} Burn Leader Ranks`;
     },
 
     burnLeaderRankLabel(rank) {
       const value = Number(rank?.rank ?? 0);
       return `#${value + 1}`;
     },
 
     burnLeaderEligibilityLabel(rank) {
       const from = rank?.eligible_from_height ?? rank?.eligibleFromHeight ?? "-";
       const until = rank?.eligible_until_height ?? rank?.eligibleUntilHeight ?? "-";
       return `${from}-${until}`;
     },
 
     walletTransactions() {
       return this.walletTxs;
     },
 
     txTitle(tx) {
       if (tx.status === "pending") return tx.blinded ? "Pending blind" : "Pending";
       return tx.blockHeight === null ? "Confirmed" : `Block ${tx.blockHeight}`;
     },
 
     walletTxTimeLabel(tx) {
       const timestamp = Number(tx?.timestampMs ?? tx?.timestamp_ms);
       if (!Number.isFinite(timestamp) || timestamp <= 0) {
         return tx?.status === "pending" ? "Pending" : "-";
       }
       return new Date(timestamp).toLocaleString();
     },
 
     isLeaderLabel() {
       if (!this.status.mining) return "-";
       return this.status.mining.wallet_is_current_leader ? "yes" : "no";
     },
 
     sharedHeightLabel() {
       const local = this.status.chain?.height;
       if (typeof local !== "number") return "-";
       const peerHeights = this.peers
         .filter((peer) => !peer.last_error)
         .map((peer) => peer.last_known_height)
         .filter((height) => typeof height === "number");
       if (peerHeights.length === 0) return local;
       return Math.min(local, ...peerHeights);
     },
 
     networkHealthClass() {
       if (this.networkHealth.ok) return "healthy";
       if (this.networkHealth.state === "syncing") return "syncing";
       if (this.networkHealth.state === "isolated") return "isolated";
       if (this.networkHealth.state === "stale") return "stale";
       if (this.networkHealth.state === "banned") return "banned";
       return "error";
     },
 
     networkLagLabel() {
       const lag = this.networkHealth.lag_blocks;
       if (typeof lag !== "number") return "-";
       if (lag === 0) return "even";
       return `${lag} behind`;
     },
 
     basicNetworkStatusLabel() {
       const state = this.networkHealth.state;
       if (!state) return "Network starting";
       if (state === "healthy" || state === "ahead of peers") return "Connected";
       if (state === "syncing" || state === "mempool syncing") return "Syncing";
       if (state === "isolated") return "Offline";
       return state.charAt(0).toUpperCase() + state.slice(1);
     },
 
     basicNetworkNeedsAttention() {
       if (!this.networkHealth.state) return false;
       return !this.networkHealth.ok && this.networkHealth.state !== "syncing";
     },
 
     networkTimeOffsetLabel() {
       return this.clockOffsetLabel(this.networkHealth.network_time_offset_ms, true);
     },
 
     outboundPeers() {
       return this.peers.filter((peer) => peer.direction !== "inbound");
     },
 
     inboundPeers() {
       return this.peers.filter((peer) => peer.direction === "inbound");
     },
 
     healthyPeers() {
       return this.peers.filter((peer) => !peer.last_error && typeof peer.last_known_height === "number");
     },
 
     failedPeers() {
       return this.peers.filter((peer) => peer.last_error);
     },
 
     stalePeer(peer) {
       const lastSuccess = peer.last_success_ms;
       if (typeof lastSuccess !== "number") return false;
       return Date.now() - lastSuccess > 20 * 60 * 1000;
     },
 
     bannedPeer(peer) {
       const bannedUntil = peer.banned_until_ms;
       return typeof bannedUntil === "number" && bannedUntil > Date.now();
     },
 
     peerStatus(peer) {
       if (this.bannedPeer(peer)) return "banned";
       if (peer.last_error) return "error";
       if (this.stalePeer(peer)) return "stale";
       if (typeof peer.last_known_height === "number") return "synced";
       if ((peer.messages_sent ?? 0) > 0 || (peer.messages_received ?? 0) > 0) return "active";
       return "pending";
     },
 
     peerStatusLabel(peer) {
       return {
         error: "Error",
         banned: "Banned",
         stale: "Stale",
         synced: "Synced",
         active: "Active",
         pending: "Pending",
       }[this.peerStatus(peer)];
     },
 
     relativeTimeLabel(timestampMs) {
       if (typeof timestampMs !== "number" || !Number.isFinite(timestampMs)) return "-";
       const ageSeconds = Math.max(0, Math.round((Date.now() - timestampMs) / 1000));
       if (ageSeconds < 5) return "now";
       if (ageSeconds < 60) return `${ageSeconds}s ago`;
       const ageMinutes = Math.round(ageSeconds / 60);
       if (ageMinutes < 60) return `${ageMinutes}m ago`;
       const ageHours = Math.round(ageMinutes / 60);
       if (ageHours < 48) return `${ageHours}h ago`;
       return `${Math.round(ageHours / 24)}d ago`;
     },
 
     peerLastContactLabel(peer) {
       return this.relativeTimeLabel(peer.last_contact_ms);
     },
 
     peerClockLabel(peer) {
       const label = this.clockOffsetLabel(peer.last_clock_offset_ms, false);
       if (label === "-") return "-";
       return peer.last_clock_offset_accepted === false ? `${label} ignored` : label;
     },
 
     clockOffsetLabel(offsetMs, zeroAsSynced) {
       if (typeof offsetMs !== "number") return "-";
       const sign = offsetMs > 0 ? "+" : offsetMs < 0 ? "-" : "";
       const absoluteSeconds = Math.round(Math.abs(offsetMs) / 1000);
       if (absoluteSeconds === 0) return zeroAsSynced ? "even" : "0s";
       if (absoluteSeconds < 60) return `${sign}${absoluteSeconds}s`;
       const minutes = Math.round(absoluteSeconds / 60);
       if (minutes < 60) return `${sign}${minutes}m`;
       return `${sign}${Math.round(minutes / 60)}h`;
     },
 
     peerBanLabel(peer) {
       if (!this.bannedPeer(peer)) return "-";
       const remainingSeconds = Math.max(0, Math.round((peer.banned_until_ms - Date.now()) / 1000));
       if (remainingSeconds < 60) return `${remainingSeconds}s`;
       const remainingMinutes = Math.round(remainingSeconds / 60);
       if (remainingMinutes < 60) return `${remainingMinutes}m`;
       return `${Math.round(remainingMinutes / 60)}h`;
     },
 
     normalizeVersion(version) {
       return String(version || "").trim().replace(/^v/i, "");
     },
 
     versionParts(version) {
       const [core] = this.normalizeVersion(version).split("-");
       return core.split(".").map((part) => Number.parseInt(part, 10) || 0);
     },
 
     compareVersions(left, right) {
       const leftParts = this.versionParts(left);
       const rightParts = this.versionParts(right);
       const length = Math.max(leftParts.length, rightParts.length, 3);
       for (let index = 0; index < length; index += 1) {
         const diff = (leftParts[index] || 0) - (rightParts[index] || 0);
         if (diff !== 0) return diff;
       }
       return 0;
     },
 
     peerHeightDelta(peer) {
       const local = this.status.chain?.height;
       const remote = peer.last_known_height;
       if (typeof local !== "number" || typeof remote !== "number") return "-";
       if (remote === local) return "even";
       if (remote > local) return `+${remote - local}`;
       return `-${local - remote}`;
     },
 
     canRemovePeer(peer) {
       return peer.direction !== "inbound";
     },
 
     targetSecondsLabel() {
       const ms = this.status.mining?.vdf_target_block_ms;
       if (!ms) return "-";
       const seconds = Math.round(ms / 1000);
       if (seconds % 60 === 0) return `${seconds / 60}m`;
       return `${seconds}s`;
     },
 
     stratumListenAddr() {
       return this.status.stratum?.listen_addr || "-";
     },
 
     stratumPoolUrl() {
       const listen = this.status.stratum?.listen_addr;
       if (!this.status.stratum?.enabled || !listen) return "-";
       const lastColon = listen.lastIndexOf(":");
       if (lastColon < 0) return `stratum+tcp://${listen}`;
       let host = listen.slice(0, lastColon);
       const port = listen.slice(lastColon + 1);
       if (host === "0.0.0.0" || host === "::" || host === "[::]") {
         host = window.location.hostname || "127.0.0.1";
       }
       return `stratum+tcp://${host}:${port}`;
     },
 
     lastUpdatedLabel() {
       return this.lastUpdated ? `Updated ${this.lastUpdated.toLocaleTimeString()}` : "Loading";
     },
   };
 };