auto: 2026-06-14_06:00 changes

5 files changed, 302 insertions, 85 deletions

diff --git a/modules/core/core-bundle.js b/modules/core/core-bundle.js
index e242230..8b73403 100644
--- a/modules/core/core-bundle.js
+++ b/modules/core/core-bundle.js
@@ -1,4 +1,5 @@
-// Core module bundle — generated for v4.5.49// Loaded synchronously in main.html before module-loader.js.
+// Core module bundle — generated for v4.5.54
+
 /* === virtual-fs.js === */
 class VirtualFileSystem {
     constructor() {
@@ -2150,7 +2151,7 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 this._registerBuiltIn();
             }
             _registerBuiltIn() {
-                const internals = ['clear','help','ls','cat','df','free','env','history','cd','pwd','touch','mkdir','rm','cp','mv','edit','cat','run','font-size','load-local','loadlocal','mem','security','security-level','security-destructive','security-system','security-whitelist','security-flag','config','ai-config','startup-modules','smart-prompt','cmd-allow','cmd-deny','system-health','server','servers','server-check','monitor','vfs','vfs-clean','vfs-size','empty-trash'];
+                const internals = ['clear','help','ls','cat','df','free','env','history','cd','pwd','touch','mkdir','rm','cp','mv','edit','cat','run','font-size','load-local','loadlocal','mem','security','security-level','security-destructive','security-system','security-whitelist','security-flag','config','ai-config','startup-modules','smart-prompt','cmd-allow','cmd-deny','system-health','server','servers','server-check','monitor','vfs','vfs-clean','vfs-size','empty-trash','expand','sysmsg'];
                 internals.forEach(c => this.registerCommand(c, { category: 'builtin' }));
             }
             setLevel(n) {
@@ -2358,16 +2359,18 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 this._configSetters = {};
                 this._loadTerminalConfig();
                 // Register built-in terminal config keys
-                this.registerConfigItem('terminal-max-lines', 200, (v) => { this.MAX_OUTPUT_LINES = v; });
+                this.registerConfigItem('terminal-max-lines', 100, (v) => { this.MAX_OUTPUT_LINES = v; });
                 this.registerConfigItem('terminal-hist-output', 50, (v) => { this._historyMaxLines = v; });
                 this.registerConfigItem('terminal-cmd-history', 200, (v) => { /* applied on next save */ });
                 this.registerConfigItem('terminal-pipe-buffer', 5000, (v) => { this._pipeBufferSize = v; });
+                this.registerConfigItem('terminal-sysmsg', true, (v) => { this._showSystemMessages = !!v; });
                 this._pipeInput = null;
                 this._pipeBufferSize = 5000;
                 this._historyBuffer = [];
                 this._historyMaxLines = 50;
                 this._historySavePending = false;
-                this.MAX_OUTPUT_LINES = 200;
+                this.MAX_OUTPUT_LINES = 100;
+                this._showSystemMessages = true;
                 this._historyCap = 200;
                 // Apply history cap from localStorage on startup (was applied "on next save" before — broken)
                 try {
@@ -2468,14 +2471,7 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                     } else if (e.ctrlKey && (e.key === 'l' || e.key === 'L')) {
                         // Ctrl+L — clear output (standard terminal)
                         e.preventDefault();
-                        // Preserve welcome/loading indicators — only clear actual output lines
-                        if (this.outputContainer) {
-                            for (const child of [...this.outputContainer.children]) {
-                                if (!child.id || (!child.id.includes('welcome') && !child.id.includes('loading'))) {
-                                    child.remove();
-                                }
-                            }
-                        }
+                        this.clearOutput();
                     } else if (e.ctrlKey && (e.key === 'c' || e.key === 'C') && this.inputField.value) {
                         // Ctrl+C — cancel current input line (standard terminal)
                         e.preventDefault();
@@ -2585,6 +2581,13 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 label.textContent = prefix + (path === '/' ? '$' : path + ' $');
             }
             print(text, type = '') {
+                if (['error','warning','success','info','text-muted'].includes(type) && !this._showSystemMessages && !type.startsWith('command')) {
+                    // Still log to history buffer so it can be shown again when toggled on,
+                    // but don't create DOM nodes while system messages are hidden.
+                    this._historyBuffer.push({ l: text, t: type });
+                    if (this._historyBuffer.length > this._historyMaxLines) this._historyBuffer.shift();
+                    return;
+                }
                 const line = document.createElement('div');
                 // Use card layout for typed messages (error/warning/info/success/text-muted), plain for bare text
                 const isTyped = ['error','warning','success'].includes(type);
@@ -2595,6 +2598,13 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 } else {
                     line.className = 'output-line';
                     line.textContent = text;
+                    // Plain lines get a lightweight inline copy button
+                    const copyBtn = document.createElement('button');
+                    copyBtn.className = 'line-copy-btn';
+                    copyBtn.textContent = 'Copy';
+                    copyBtn.setAttribute('onclick', 'webx11.copyLineToClipboard(this)');
+                    copyBtn.setAttribute('aria-label', 'Copy line');
+                    line.appendChild(copyBtn);
                 }
                 this.outputContainer.appendChild(line);
                 this._historyBuffer.push({ l: text, t: type });
@@ -2731,17 +2741,15 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                     const nd = btn.nextElementSibling;
                     if (nd) text = nd.innerText || nd.textContent;
                 }
+                this._copyText(text, btn);
+            }
+            copyLineToClipboard(btn) {
+                const line = btn.parentElement;
+                const text = line ? line.childNodes[0].textContent : '';
+                this._copyText(text, btn);
+            }
+            _copyText(text, btn=null) {
                 if (!text) return;
-                btn.textContent = 'Copied!';
-                setTimeout(function(){ btn.textContent = 'Copy'; }, 2000);
-                // Use navigator.clipboard on secure contexts (iOS 14+, modern browsers).
-                // This is the preferred API — NOTHING blocks it on HTTPS pages.
-                if (navigator.clipboard) {
-                    navigator.clipboard.writeText(text).catch(function(){});
-                }
-                // Also try textarea+execCommand synchronously for older browsers.
-                // DO NOT wrap in setTimeout — iOS Safari requires execCommand to run
-                // in the same microtask as the user's click event.
                 try {
                     var ta = document.createElement('textarea');
                     ta.value = text;
@@ -2752,7 +2760,11 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                     ta.setSelectionRange(0, text.length);
                     document.execCommand('copy');
                     document.body.removeChild(ta);
-                } catch(e) {}
+                    if (btn) { btn.textContent = 'Copied!'; setTimeout(function(){ btn.textContent = 'Copy'; }, 2000); }
+                    this.print('📋 Copied to clipboard', 'success');
+                } catch (e) {
+                    this.print('Copy failed: ' + e.message, 'error');
+                }
             }
             printClickable(items) {
                 const line = document.createElement('div');
@@ -2891,10 +2903,9 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 }
             }
             _saveHistory() {
-                if (this._historySavePending) return;
-                this._historySavePending = true;
-                setTimeout(() => {
-                    this._historySavePending = false;
+                if (this._historySaveTimer) clearTimeout(this._historySaveTimer);
+                this._historySaveTimer = setTimeout(() => {
+                    this._historySaveTimer = null;
                     try {
                         const slice = this._historyBuffer.slice(-this._historyMaxLines);
                         localStorage.setItem('webx11_terminal_output', JSON.stringify(slice));
@@ -2916,6 +2927,33 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                     container.removeChild(container.firstChild);
                 }
             }
+            toggleExpand() {
+                const container = document.getElementById('terminal-container');
+                if (!container) return;
+                container.classList.toggle('terminal-expanded');
+                const on = container.classList.contains('terminal-expanded');
+                this.print(on ? 'Terminal expanded' : 'Terminal compact', 'text-muted');
+            }
+            toggleSystemMessages(arg) {
+                let desired;
+                if (arg === 'on') desired = true;
+                else if (arg === 'off') desired = false;
+                else desired = !this._showSystemMessages;
+                this._showSystemMessages = desired;
+                this._saveTerminalConfig();
+                this.print('System messages ' + (desired ? 'on' : 'off'), 'text-muted');
+            }
+            clearOutput() {
+                if (this.outputContainer) {
+                    this.outputContainer.innerHTML = '';
+                }
+                this._historyBuffer = [];
+                if (this._historySaveTimer) {
+                    clearTimeout(this._historySaveTimer);
+                    this._historySaveTimer = null;
+                }
+                try { localStorage.removeItem('webx11_terminal_output'); } catch (e) {}
+            }
             markDirty() {
                 this._dirty = true;
             }
@@ -3369,6 +3407,7 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                     if (parsed['terminal-hist-output'] !== undefined) this._historyMaxLines = parsed['terminal-hist-output'];
                     if (parsed['terminal-cmd-history'] !== undefined) this._historyCap = parsed['terminal-cmd-history'];
                     if (parsed['terminal-pipe-buffer'] !== undefined) this._pipeBufferSize = parsed['terminal-pipe-buffer'];
+                    this._trimOutput();
                 } catch (e) {}
             }
             async _loadExtModules(filterKeys) {
@@ -3478,7 +3517,9 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 return trimmed;
             }
             async dispatchCommand(cmd, args) {
-                if (cmd === 'clear') { this.outputContainer.innerHTML = ''; this._historyBuffer = []; localStorage.removeItem('webx11_terminal_output'); return; }
+                if (cmd === 'clear') { this.clearOutput(); return; }
+                if (cmd === 'expand') { this.toggleExpand(); return; }
+                if (cmd === 'sysmsg') { this.toggleSystemMessages(args[0]); return; }
                 if (cmd === 'startup-modules') { this.openStartupModules(); return; }
                 if (cmd === 'font-size' || cmd === 'setfont') { this.setFontSize(args[0]); return; }
                 if (cmd === 'load-local' || cmd === 'loadlocal') { this.loadLocalModule(args[0]); return; }
@@ -3487,24 +3528,31 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 if (cmd === 'config') {
                     if (args.length === 0) {
                         this.print('=== Terminal Config ===', 'info');
-                        this.print(`terminal-max-lines: ${this.MAX_OUTPUT_LINES} (default: 200)`, '');
+                        this.print(`terminal-max-lines: ${this.MAX_OUTPUT_LINES} (default: 100)`, '');
                         this.print(`terminal-hist-output: ${this._historyMaxLines} (default: 50)`, '');
                         this.print(`terminal-cmd-history: ${this._historyCap} (default: 200)`, '');
                         this.print(`terminal-pipe-buffer: ${this._pipeBufferSize} (default: 5000)`, '');
+                        this.print(`terminal-sysmsg: ${this._showSystemMessages ? 'on' : 'off'} (default: on)`, '');
                         this.print('Usage: config <key> <value>', 'info');
-                        this.print('Keys: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer', 'info');
+                        this.print('Keys: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer, terminal-sysmsg', 'info');
                         return;
                     }
                     const key = args[0];
                     const val = args[1];
                     if (val === undefined) { this.print('Usage: config <key> <value>', 'warning'); return; }
                     const n = parseInt(val);
+                    if (key === 'terminal-sysmsg') {
+                        this._showSystemMessages = val !== 'off';
+                        this._saveTerminalConfig();
+                        this.print(`config ${key} set to ${this._showSystemMessages ? 'on' : 'off'}`, 'success');
+                        return;
+                    }
                     if (isNaN(n) || n < 1) { this.print('Value must be a positive number', 'warning'); return; }
                     if (key === 'terminal-max-lines') { this.MAX_OUTPUT_LINES = n; }
                     else if (key === 'terminal-hist-output') { this._historyMaxLines = n; }
                     else if (key === 'terminal-cmd-history') { this._historyCap = n; }
                     else if (key === 'terminal-pipe-buffer') { this._pipeBufferSize = n; }
-                    else { this.print(`Unknown key: ${key}. Valid: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer`, 'warning'); return; }
+                    else { this.print(`Unknown key: ${key}. Valid: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer, terminal-sysmsg`, 'warning'); return; }
                     this._saveTerminalConfig();
                     this.print(`config ${key} set to ${val}`, 'success');
                     return;
@@ -4538,6 +4586,8 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
             printMemoryStats() {
                 const pm = typeof performance !== 'undefined' && performance.memory;
                 let heapInfo = '';
+                let domNodes = 0;
+                try { domNodes = document.getElementsByTagName('*').length; } catch (e) {}
                 if (pm) {
                     const used = (pm.usedJSHeapSize / 1048576).toFixed(1);
                     const total = (pm.totalJSHeapSize / 1048576).toFixed(1);
@@ -4554,9 +4604,11 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                 const output = [
                     `📊 Memory Stats`,
                     `  ${heapInfo}`,
+                    `  DOM nodes: ${domNodes}`,
                     `  Terminal lines in DOM: ${this.outputContainer.children.length}`,
                     `  History buffer: ${this._historyBuffer.length} entries`,
                     `  MAX_OUTPUT_LINES: ${this.MAX_OUTPUT_LINES}`,
+                    `  History-backed output lines: ${this._historyBuffer.length}`,
                     `  Commands in history: ${this.history.length}`
                 ].join('\n');
                 this.print(output, 'info');
@@ -4631,6 +4683,8 @@ Only output XML function calls for tool tasks. If no tool is needed, answer norm
                     'font-size': 'font-size <8-32> — Set terminal font size (persists across sessions)',
                     'setfont': 'setfont <8-32> — Alias for font-size',
                     'smart-prompt': 'smart-prompt [on|off] — Toggle context-aware prompt (shows name, skills, sessions, memory, edits)',
+                    'expand': 'expand — Toggle full-screen terminal output',
+                    'sysmsg': 'sysmsg [on|off] — Toggle system/warning/error/info message visibility',
                     'checkpoint': 'checkpoint [name] — Create a VFS snapshot (name defaults to ISO timestamp)',
                     'checkpoint-list': 'checkpoint-list — List all VFS checkpoints',
                     'rollback': 'rollback <name> — Restore VFS from a checkpoint',
@@ -14370,6 +14424,10 @@ class NeuralVFSModule {
         this._treeFiles = 5;
         this._treeConcepts = 15;
         this._resolveFiles = 20;
+        this._excludePatterns = [];
+        this._excludeDirs = [];
+        this._excludeFiles = [];
+        this._includeOnly = [];
         this._loadConfig();
         // Auto-sync state
         this._dirtyPaths = new Set();
@@ -14395,10 +14453,10 @@ class NeuralVFSModule {
         }
     }
     _loadConfig() {
-        try { const c = localStorage.getItem('webx11_nvfs_config'); if (c) { const p = JSON.parse(c); if (p.fuzzyLimit) this._fuzzyLimit = p.fuzzyLimit; if (p.treeFiles) this._treeFiles = p.treeFiles; if (p.treeConcepts) this._treeConcepts = p.treeConcepts; if (p.resolveFiles) this._resolveFiles = p.resolveFiles; } } catch (e) {}
+        try { const c = localStorage.getItem('webx11_nvfs_config'); if (c) { const p = JSON.parse(c); if (p.fuzzyLimit) this._fuzzyLimit = p.fuzzyLimit; if (p.treeFiles) this._treeFiles = p.treeFiles; if (p.treeConcepts) this._treeConcepts = p.treeConcepts; if (p.resolveFiles) this._resolveFiles = p.resolveFiles; if (Array.isArray(p.excludePatterns)) this._excludePatterns = p.excludePatterns; if (Array.isArray(p.excludeDirs)) this._excludeDirs = p.excludeDirs; if (Array.isArray(p.excludeFiles)) this._excludeFiles = p.excludeFiles; if (Array.isArray(p.includeOnly)) this._includeOnly = p.includeOnly; } } catch (e) {}
     }
     _saveConfig() {
-        localStorage.setItem('webx11_nvfs_config', JSON.stringify({ fuzzyLimit: this._fuzzyLimit, treeFiles: this._treeFiles, treeConcepts: this._treeConcepts, resolveFiles: this._resolveFiles }));
+        localStorage.setItem('webx11_nvfs_config', JSON.stringify({ fuzzyLimit: this._fuzzyLimit, treeFiles: this._treeFiles, treeConcepts: this._treeConcepts, resolveFiles: this._resolveFiles, excludePatterns: this._excludePatterns, excludeDirs: this._excludeDirs, excludeFiles: this._excludeFiles, includeOnly: this._includeOnly }));
     }
 
     getHelpInfo() {
@@ -14407,7 +14465,7 @@ class NeuralVFSModule {
             'nvfs-status': 'nvfs-status — Show semantic index stats and last scan time',
             'nvfs-resolve': 'nvfs-resolve <concept> — Find files related to a concept',
             'nvfs-tree': 'nvfs-tree [concept] — Show concept-to-file mapping as a tree',
-            'nvfs-config': 'nvfs-config [key] [value] — View or set Neural VFS config (fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index, deep-model)',
+            'nvfs-config': 'nvfs-config [key] [value] — View or set Neural VFS config (fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index, deep-model, exclude-patterns, exclude-dirs, exclude-files, include-only)',
             'nvfs-alias': 'nvfs-alias list|add|remove|clear — Manage concept aliases',
             'nvfs-sync': 'nvfs-sync [--deep] — Incremental background sync (auto-sync dirty files)',
             'nvfs-save': 'nvfs-save — Force-save current in-memory index to VFS (survives refresh)',
@@ -14582,6 +14640,7 @@ class NeuralVFSModule {
         if (!entries) return;
         for (const entry of entries) {
             const fullPath = path === '/' ? '/' + entry.name : path + '/' + entry.name;
+            if (this._isExcluded(fullPath)) continue;
             if (entry.type === 'file') {
                 if (this._isSystemFile(fullPath)) continue;
                 list.push({ path: fullPath, node: { type: 'file', content: fs.readFile(fullPath) || '' } });
@@ -14734,7 +14793,7 @@ class NeuralVFSModule {
     // ── Nvfs Config ──
 
     nvfsConfig(args) {
-        if (args.length === 0) {
+        const listConfig = () => {
             this.terminal.print('=== Neural VFS Config ===', 'info');
             this.terminal.print(`fuzzy-limit: ${this._fuzzyLimit} (default: 10)`, '');
             this.terminal.print(`tree-files: ${this._treeFiles} (default: 5)`, '');
@@ -14742,17 +14801,21 @@ class NeuralVFSModule {
             this.terminal.print(`resolve-files: ${this._resolveFiles} (default: 20)`, '');
             this.terminal.print(`deep-index: ${this._deepIndexEnabled ? 'on' : 'off'} (LLM-assisted concept extraction)`, '');
             this.terminal.print(`deep-model: ${this._deepModel} (model for deep indexing)`, '');
+            this.terminal.print(`exclude-patterns: ${this._excludePatterns.length ? this._excludePatterns.join(', ') : '(none)'}`, '');
+            this.terminal.print(`exclude-dirs: ${this._excludeDirs.length ? this._excludeDirs.join(', ') : '(none)'}`, '');
+            this.terminal.print(`exclude-files: ${this._excludeFiles.length ? this._excludeFiles.join(', ') : '(none)'}`, '');
+            this.terminal.print(`include-only: ${this._includeOnly.length ? this._includeOnly.join(', ') : '(all)'}`, '');
             this.terminal.print('Usage: nvfs-config <key> <value>', 'info');
-            this.terminal.print('Keys: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model <name>', 'info');
-            return;
-        }
+            this.terminal.print('Keys: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model, exclude-patterns, exclude-dirs, exclude-files, include-only', 'info');
+            this.terminal.print('Lists are comma-separated. Use "+item" to append, "-item" to remove, or a plain comma list to replace.', 'info');
+        };
+        if (args.length === 0) { listConfig(); return; }
         const key = args[0];
         if (key === 'deep-index') {
             const val = args[1];
             if (val !== 'on' && val !== 'off') return this.terminal.print('deep-index must be "on" or "off"', 'warning');
             this._deepIndexEnabled = val === 'on';
             localStorage.setItem('webx11_nvfs_deep', this._deepIndexEnabled ? 'true' : 'false');
-            // If turning off mid-queue, abort pending deep work
             if (!this._deepIndexEnabled && this._deepIndexing) {
                 this._deepQueue = [];
                 this._deepIndexing = false;
@@ -14773,13 +14836,38 @@ class NeuralVFSModule {
             this.terminal.print(`nvfs-config deep-model set to ${val}`, 'success');
             return;
         }
+        // List-type config keys
+        const listKeys = {
+            'exclude-patterns': '_excludePatterns',
+            'exclude-dirs': '_excludeDirs',
+            'exclude-files': '_excludeFiles',
+            'include-only': '_includeOnly'
+        };
+        if (listKeys[key]) {
+            const raw = args.slice(1).join(' ').trim();
+            if (!raw) { this.terminal.print(`${key}: ${this[listKeys[key]].join(', ') || '(empty)'}`, 'info'); return; }
+            let current = this[listKeys[key]];
+            if (raw.startsWith('+')) {
+                const add = raw.slice(1).split(',').map(s => s.trim()).filter(Boolean);
+                current = [...new Set([...current, ...add])];
+            } else if (raw.startsWith('-')) {
+                const rem = raw.slice(1).split(',').map(s => s.trim()).filter(Boolean);
+                current = current.filter(c => !rem.includes(c));
+            } else {
+                current = raw.split(',').map(s => s.trim()).filter(Boolean);
+            }
+            this[listKeys[key]] = current;
+            this._saveConfig();
+            this.terminal.print(`${key}: ${current.join(', ')}`, 'success');
+            return;
+        }
         const val = parseInt(args[1]);
         if (isNaN(val) || val < 1 || val > 200) return this.terminal.print('Value must be 1-200', 'warning');
         if (key === 'fuzzy-limit') { this._fuzzyLimit = val; }
         else if (key === 'tree-files') { this._treeFiles = val; }
         else if (key === 'tree-concepts') { this._treeConcepts = val; }
         else if (key === 'resolve-files') { this._resolveFiles = val; }
-        else { return this.terminal.print(`Unknown key: ${key}. Valid: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model <name>`, 'warning'); }
+        else { return this.terminal.print(`Unknown key: ${key}. Valid: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model, exclude-patterns, exclude-dirs, exclude-files, include-only`, 'warning'); }
         this._saveConfig();
         this.terminal.print(`nvfs-config ${key} set to ${val}`, 'success');
     }
@@ -14846,6 +14934,28 @@ class NeuralVFSModule {
         return false;
     }
 
+    _isExcluded(path) {
+        const normalized = path.startsWith('/') ? path : '/' + path;
+        // Explicit file or directory names
+        const excludeNames = ['agents', 'leases', 'agent-registry', 'lease-system'];
+        const parts = normalized.split('/').filter(Boolean);
+        for (const part of parts) {
+            if (excludeNames.includes(part.toLowerCase())) return true;
+            if (this._excludeDirs.includes(part)) return true;
+            if (this._excludeFiles.includes(part)) return true;
+        }
+        if (this._excludePatterns.some(p => {
+            try { return new RegExp(p).test(normalized); } catch (e) { return normalized.includes(p); }
+        })) return true;
+        if (this._includeOnly.length > 0) {
+            const isIncluded = this._includeOnly.some(p => {
+                try { return new RegExp(p).test(normalized); } catch (e) { return normalized.includes(p); }
+            });
+            if (!isIncluded) return true;
+        }
+        return false;
+    }
+
     _contentHash(str) {
         if (!str) return '';
         let hash = 5381;
@@ -15062,7 +15172,7 @@ class NeuralVFSModule {
     // ── Enum helpers for autocomplete ──
 
     _getNvfsConfigKeys() {
-        return ['fuzzy-limit', 'tree-files', 'tree-concepts', 'resolve-files', 'deep-index', 'deep-model'];
+        return ['fuzzy-limit', 'tree-files', 'tree-concepts', 'resolve-files', 'deep-index', 'deep-model', 'exclude-patterns', 'exclude-dirs', 'exclude-files', 'include-only'];
     }
 
     _getNvfsAliasActions() {
@@ -15343,5 +15453,3 @@ Concepts:`;
 if (typeof window !== 'undefined') {
     window.NeuralVFSModule = NeuralVFSModule;
 }
-
-/* === end core bundle === */
diff --git a/modules/core/module-loader.js b/modules/core/module-loader.js
index e0fa8e1..cd5ed27 100644
--- a/modules/core/module-loader.js
+++ b/modules/core/module-loader.js
@@ -4,7 +4,7 @@
     // Core module bundle loaded synchronously in main.html.
     // This loader only handles version cache-busting, splash, terminal init, and optional ext modules.
 
-    const LATEST_VER = '2026-06-13-v4.5.49';
+    const LATEST_VER = '2026-06-13-v4.5.54';
     const CACHE = '?v=' + LATEST_VER;
     const stored = localStorage.getItem('webx11_cache_ver');
     if (stored !== LATEST_VER) {
@@ -51,7 +51,7 @@
 
             // Optional ext modules via packages.json
             if (typeof webx11._loadExtModules === 'function') {
-                const extKeys = ['calc', 'voice', 'cron', 'theme', 'wpm', 'mindmap', 'webdav', 'skill-pack-core', 'cryptogzip', 'tutorial', 'floating', 'console'];
+                let extKeys = ['calc', 'voice', 'cron', 'theme', 'wpm', 'mindmap', 'webdav', 'skill-pack-core', 'cryptogzip', 'tutorial', 'floating', 'console'];
                 const saved = localStorage.getItem('webx11_startup_modules');
                 let selected = null;
                 try { if (saved) selected = JSON.parse(saved); } catch (e) {}
diff --git a/modules/core/module-neural-vfs.js b/modules/core/module-neural-vfs.js
index 2e5b9ac..f9bc7f4 100644
--- a/modules/core/module-neural-vfs.js
+++ b/modules/core/module-neural-vfs.js
@@ -21,6 +21,10 @@ class NeuralVFSModule {
         this._treeFiles = 5;
         this._treeConcepts = 15;
         this._resolveFiles = 20;
+        this._excludePatterns = [];
+        this._excludeDirs = [];
+        this._excludeFiles = [];
+        this._includeOnly = [];
         this._loadConfig();
         // Auto-sync state
         this._dirtyPaths = new Set();
@@ -46,10 +50,10 @@ class NeuralVFSModule {
         }
     }
     _loadConfig() {
-        try { const c = localStorage.getItem('webx11_nvfs_config'); if (c) { const p = JSON.parse(c); if (p.fuzzyLimit) this._fuzzyLimit = p.fuzzyLimit; if (p.treeFiles) this._treeFiles = p.treeFiles; if (p.treeConcepts) this._treeConcepts = p.treeConcepts; if (p.resolveFiles) this._resolveFiles = p.resolveFiles; } } catch (e) {}
+        try { const c = localStorage.getItem('webx11_nvfs_config'); if (c) { const p = JSON.parse(c); if (p.fuzzyLimit) this._fuzzyLimit = p.fuzzyLimit; if (p.treeFiles) this._treeFiles = p.treeFiles; if (p.treeConcepts) this._treeConcepts = p.treeConcepts; if (p.resolveFiles) this._resolveFiles = p.resolveFiles; if (Array.isArray(p.excludePatterns)) this._excludePatterns = p.excludePatterns; if (Array.isArray(p.excludeDirs)) this._excludeDirs = p.excludeDirs; if (Array.isArray(p.excludeFiles)) this._excludeFiles = p.excludeFiles; if (Array.isArray(p.includeOnly)) this._includeOnly = p.includeOnly; } } catch (e) {}
     }
     _saveConfig() {
-        localStorage.setItem('webx11_nvfs_config', JSON.stringify({ fuzzyLimit: this._fuzzyLimit, treeFiles: this._treeFiles, treeConcepts: this._treeConcepts, resolveFiles: this._resolveFiles }));
+        localStorage.setItem('webx11_nvfs_config', JSON.stringify({ fuzzyLimit: this._fuzzyLimit, treeFiles: this._treeFiles, treeConcepts: this._treeConcepts, resolveFiles: this._resolveFiles, excludePatterns: this._excludePatterns, excludeDirs: this._excludeDirs, excludeFiles: this._excludeFiles, includeOnly: this._includeOnly }));
     }
 
     getHelpInfo() {
@@ -58,7 +62,7 @@ class NeuralVFSModule {
             'nvfs-status': 'nvfs-status — Show semantic index stats and last scan time',
             'nvfs-resolve': 'nvfs-resolve <concept> — Find files related to a concept',
             'nvfs-tree': 'nvfs-tree [concept] — Show concept-to-file mapping as a tree',
-            'nvfs-config': 'nvfs-config [key] [value] — View or set Neural VFS config (fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index, deep-model)',
+            'nvfs-config': 'nvfs-config [key] [value] — View or set Neural VFS config (fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index, deep-model, exclude-patterns, exclude-dirs, exclude-files, include-only)',
             'nvfs-alias': 'nvfs-alias list|add|remove|clear — Manage concept aliases',
             'nvfs-sync': 'nvfs-sync [--deep] — Incremental background sync (auto-sync dirty files)',
             'nvfs-save': 'nvfs-save — Force-save current in-memory index to VFS (survives refresh)',
@@ -233,6 +237,7 @@ class NeuralVFSModule {
         if (!entries) return;
         for (const entry of entries) {
             const fullPath = path === '/' ? '/' + entry.name : path + '/' + entry.name;
+            if (this._isExcluded(fullPath)) continue;
             if (entry.type === 'file') {
                 if (this._isSystemFile(fullPath)) continue;
                 list.push({ path: fullPath, node: { type: 'file', content: fs.readFile(fullPath) || '' } });
@@ -385,7 +390,7 @@ class NeuralVFSModule {
     // ── Nvfs Config ──
 
     nvfsConfig(args) {
-        if (args.length === 0) {
+        const listConfig = () => {
             this.terminal.print('=== Neural VFS Config ===', 'info');
             this.terminal.print(`fuzzy-limit: ${this._fuzzyLimit} (default: 10)`, '');
             this.terminal.print(`tree-files: ${this._treeFiles} (default: 5)`, '');
@@ -393,17 +398,21 @@ class NeuralVFSModule {
             this.terminal.print(`resolve-files: ${this._resolveFiles} (default: 20)`, '');
             this.terminal.print(`deep-index: ${this._deepIndexEnabled ? 'on' : 'off'} (LLM-assisted concept extraction)`, '');
             this.terminal.print(`deep-model: ${this._deepModel} (model for deep indexing)`, '');
+            this.terminal.print(`exclude-patterns: ${this._excludePatterns.length ? this._excludePatterns.join(', ') : '(none)'}`, '');
+            this.terminal.print(`exclude-dirs: ${this._excludeDirs.length ? this._excludeDirs.join(', ') : '(none)'}`, '');
+            this.terminal.print(`exclude-files: ${this._excludeFiles.length ? this._excludeFiles.join(', ') : '(none)'}`, '');
+            this.terminal.print(`include-only: ${this._includeOnly.length ? this._includeOnly.join(', ') : '(all)'}`, '');
             this.terminal.print('Usage: nvfs-config <key> <value>', 'info');
-            this.terminal.print('Keys: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model <name>', 'info');
-            return;
-        }
+            this.terminal.print('Keys: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model, exclude-patterns, exclude-dirs, exclude-files, include-only', 'info');
+            this.terminal.print('Lists are comma-separated. Use "+item" to append, "-item" to remove, or a plain comma list to replace.', 'info');
+        };
+        if (args.length === 0) { listConfig(); return; }
         const key = args[0];
         if (key === 'deep-index') {
             const val = args[1];
             if (val !== 'on' && val !== 'off') return this.terminal.print('deep-index must be "on" or "off"', 'warning');
             this._deepIndexEnabled = val === 'on';
             localStorage.setItem('webx11_nvfs_deep', this._deepIndexEnabled ? 'true' : 'false');
-            // If turning off mid-queue, abort pending deep work
             if (!this._deepIndexEnabled && this._deepIndexing) {
                 this._deepQueue = [];
                 this._deepIndexing = false;
@@ -424,13 +433,38 @@ class NeuralVFSModule {
             this.terminal.print(`nvfs-config deep-model set to ${val}`, 'success');
             return;
         }
+        // List-type config keys
+        const listKeys = {
+            'exclude-patterns': '_excludePatterns',
+            'exclude-dirs': '_excludeDirs',
+            'exclude-files': '_excludeFiles',
+            'include-only': '_includeOnly'
+        };
+        if (listKeys[key]) {
+            const raw = args.slice(1).join(' ').trim();
+            if (!raw) { this.terminal.print(`${key}: ${this[listKeys[key]].join(', ') || '(empty)'}`, 'info'); return; }
+            let current = this[listKeys[key]];
+            if (raw.startsWith('+')) {
+                const add = raw.slice(1).split(',').map(s => s.trim()).filter(Boolean);
+                current = [...new Set([...current, ...add])];
+            } else if (raw.startsWith('-')) {
+                const rem = raw.slice(1).split(',').map(s => s.trim()).filter(Boolean);
+                current = current.filter(c => !rem.includes(c));
+            } else {
+                current = raw.split(',').map(s => s.trim()).filter(Boolean);
+            }
+            this[listKeys[key]] = current;
+            this._saveConfig();
+            this.terminal.print(`${key}: ${current.join(', ')}`, 'success');
+            return;
+        }
         const val = parseInt(args[1]);
         if (isNaN(val) || val < 1 || val > 200) return this.terminal.print('Value must be 1-200', 'warning');
         if (key === 'fuzzy-limit') { this._fuzzyLimit = val; }
         else if (key === 'tree-files') { this._treeFiles = val; }
         else if (key === 'tree-concepts') { this._treeConcepts = val; }
         else if (key === 'resolve-files') { this._resolveFiles = val; }
-        else { return this.terminal.print(`Unknown key: ${key}. Valid: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model <name>`, 'warning'); }
+        else { return this.terminal.print(`Unknown key: ${key}. Valid: fuzzy-limit, tree-files, tree-concepts, resolve-files, deep-index (on|off), deep-model, exclude-patterns, exclude-dirs, exclude-files, include-only`, 'warning'); }
         this._saveConfig();
         this.terminal.print(`nvfs-config ${key} set to ${val}`, 'success');
     }
@@ -497,6 +531,28 @@ class NeuralVFSModule {
         return false;
     }
 
+    _isExcluded(path) {
+        const normalized = path.startsWith('/') ? path : '/' + path;
+        // Explicit file or directory names
+        const excludeNames = ['agents', 'leases', 'agent-registry', 'lease-system'];
+        const parts = normalized.split('/').filter(Boolean);
+        for (const part of parts) {
+            if (excludeNames.includes(part.toLowerCase())) return true;
+            if (this._excludeDirs.includes(part)) return true;
+            if (this._excludeFiles.includes(part)) return true;
+        }
+        if (this._excludePatterns.some(p => {
+            try { return new RegExp(p).test(normalized); } catch (e) { return normalized.includes(p); }
+        })) return true;
+        if (this._includeOnly.length > 0) {
+            const isIncluded = this._includeOnly.some(p => {
+                try { return new RegExp(p).test(normalized); } catch (e) { return normalized.includes(p); }
+            });
+            if (!isIncluded) return true;
+        }
+        return false;
+    }
+
     _contentHash(str) {
         if (!str) return '';
         let hash = 5381;
@@ -713,7 +769,7 @@ class NeuralVFSModule {
     // ── Enum helpers for autocomplete ──
 
     _getNvfsConfigKeys() {
-        return ['fuzzy-limit', 'tree-files', 'tree-concepts', 'resolve-files', 'deep-index', 'deep-model'];
+        return ['fuzzy-limit', 'tree-files', 'tree-concepts', 'resolve-files', 'deep-index', 'deep-model', 'exclude-patterns', 'exclude-dirs', 'exclude-files', 'include-only'];
     }
 
     _getNvfsAliasActions() {
diff --git a/modules/core/module-system.js b/modules/core/module-system.js
index 72735a7..f7da981 100644
--- a/modules/core/module-system.js
+++ b/modules/core/module-system.js
@@ -25,6 +25,8 @@
                     'font-size': 'font-size <8-32> — Set terminal font size (persists across sessions)',
                     'setfont': 'setfont <8-32> — Alias for font-size',
                     'smart-prompt': 'smart-prompt [on|off] — Toggle context-aware prompt (shows name, skills, sessions, memory, edits)',
+                    'expand': 'expand — Toggle full-screen terminal output',
+                    'sysmsg': 'sysmsg [on|off] — Toggle system/warning/error/info message visibility',
                     'checkpoint': 'checkpoint [name] — Create a VFS snapshot (name defaults to ISO timestamp)',
                     'checkpoint-list': 'checkpoint-list — List all VFS checkpoints',
                     'rollback': 'rollback <name> — Restore VFS from a checkpoint',
diff --git a/modules/core/terminal.js b/modules/core/terminal.js
index 1aad5bb..c416b8b 100644
--- a/modules/core/terminal.js
+++ b/modules/core/terminal.js
@@ -19,7 +19,7 @@
                 this._registerBuiltIn();
             }
             _registerBuiltIn() {
-                const internals = ['clear','help','ls','cat','df','free','env','history','cd','pwd','touch','mkdir','rm','cp','mv','edit','cat','run','font-size','load-local','loadlocal','mem','security','security-level','security-destructive','security-system','security-whitelist','security-flag','config','ai-config','startup-modules','smart-prompt','cmd-allow','cmd-deny','system-health','server','servers','server-check','monitor','vfs','vfs-clean','vfs-size','empty-trash'];
+                const internals = ['clear','help','ls','cat','df','free','env','history','cd','pwd','touch','mkdir','rm','cp','mv','edit','cat','run','font-size','load-local','loadlocal','mem','security','security-level','security-destructive','security-system','security-whitelist','security-flag','config','ai-config','startup-modules','smart-prompt','cmd-allow','cmd-deny','system-health','server','servers','server-check','monitor','vfs','vfs-clean','vfs-size','empty-trash','expand','sysmsg'];
                 internals.forEach(c => this.registerCommand(c, { category: 'builtin' }));
             }
             setLevel(n) {
@@ -227,16 +227,18 @@
                 this._configSetters = {};
                 this._loadTerminalConfig();
                 // Register built-in terminal config keys
-                this.registerConfigItem('terminal-max-lines', 200, (v) => { this.MAX_OUTPUT_LINES = v; });
+                this.registerConfigItem('terminal-max-lines', 100, (v) => { this.MAX_OUTPUT_LINES = v; });
                 this.registerConfigItem('terminal-hist-output', 50, (v) => { this._historyMaxLines = v; });
                 this.registerConfigItem('terminal-cmd-history', 200, (v) => { /* applied on next save */ });
                 this.registerConfigItem('terminal-pipe-buffer', 5000, (v) => { this._pipeBufferSize = v; });
+                this.registerConfigItem('terminal-sysmsg', true, (v) => { this._showSystemMessages = !!v; });
                 this._pipeInput = null;
                 this._pipeBufferSize = 5000;
                 this._historyBuffer = [];
                 this._historyMaxLines = 50;
                 this._historySavePending = false;
-                this.MAX_OUTPUT_LINES = 200;
+                this.MAX_OUTPUT_LINES = 100;
+                this._showSystemMessages = true;
                 this._historyCap = 200;
                 // Apply history cap from localStorage on startup (was applied "on next save" before — broken)
                 try {
@@ -337,14 +339,7 @@
                     } else if (e.ctrlKey && (e.key === 'l' || e.key === 'L')) {
                         // Ctrl+L — clear output (standard terminal)
                         e.preventDefault();
-                        // Preserve welcome/loading indicators — only clear actual output lines
-                        if (this.outputContainer) {
-                            for (const child of [...this.outputContainer.children]) {
-                                if (!child.id || (!child.id.includes('welcome') && !child.id.includes('loading'))) {
-                                    child.remove();
-                                }
-                            }
-                        }
+                        this.clearOutput();
                     } else if (e.ctrlKey && (e.key === 'c' || e.key === 'C') && this.inputField.value) {
                         // Ctrl+C — cancel current input line (standard terminal)
                         e.preventDefault();
@@ -454,6 +449,13 @@
                 label.textContent = prefix + (path === '/' ? '$' : path + ' $');
             }
             print(text, type = '') {
+                if (['error','warning','success','info','text-muted'].includes(type) && !this._showSystemMessages && !type.startsWith('command')) {
+                    // Still log to history buffer so it can be shown again when toggled on,
+                    // but don't create DOM nodes while system messages are hidden.
+                    this._historyBuffer.push({ l: text, t: type });
+                    if (this._historyBuffer.length > this._historyMaxLines) this._historyBuffer.shift();
+                    return;
+                }
                 const line = document.createElement('div');
                 // Use card layout for typed messages (error/warning/info/success/text-muted), plain for bare text
                 const isTyped = ['error','warning','success'].includes(type);
@@ -464,6 +466,13 @@
                 } else {
                     line.className = 'output-line';
                     line.textContent = text;
+                    // Plain lines get a lightweight inline copy button
+                    const copyBtn = document.createElement('button');
+                    copyBtn.className = 'line-copy-btn';
+                    copyBtn.textContent = 'Copy';
+                    copyBtn.setAttribute('onclick', 'webx11.copyLineToClipboard(this)');
+                    copyBtn.setAttribute('aria-label', 'Copy line');
+                    line.appendChild(copyBtn);
                 }
                 this.outputContainer.appendChild(line);
                 this._historyBuffer.push({ l: text, t: type });
@@ -600,17 +609,15 @@
                     const nd = btn.nextElementSibling;
                     if (nd) text = nd.innerText || nd.textContent;
                 }
+                this._copyText(text, btn);
+            }
+            copyLineToClipboard(btn) {
+                const line = btn.parentElement;
+                const text = line ? line.childNodes[0].textContent : '';
+                this._copyText(text, btn);
+            }
+            _copyText(text, btn=null) {
                 if (!text) return;
-                btn.textContent = 'Copied!';
-                setTimeout(function(){ btn.textContent = 'Copy'; }, 2000);
-                // Use navigator.clipboard on secure contexts (iOS 14+, modern browsers).
-                // This is the preferred API — NOTHING blocks it on HTTPS pages.
-                if (navigator.clipboard) {
-                    navigator.clipboard.writeText(text).catch(function(){});
-                }
-                // Also try textarea+execCommand synchronously for older browsers.
-                // DO NOT wrap in setTimeout — iOS Safari requires execCommand to run
-                // in the same microtask as the user's click event.
                 try {
                     var ta = document.createElement('textarea');
                     ta.value = text;
@@ -621,7 +628,11 @@
                     ta.setSelectionRange(0, text.length);
                     document.execCommand('copy');
                     document.body.removeChild(ta);
-                } catch(e) {}
+                    if (btn) { btn.textContent = 'Copied!'; setTimeout(function(){ btn.textContent = 'Copy'; }, 2000); }
+                    this.print('📋 Copied to clipboard', 'success');
+                } catch (e) {
+                    this.print('Copy failed: ' + e.message, 'error');
+                }
             }
             printClickable(items) {
                 const line = document.createElement('div');
@@ -760,10 +771,9 @@
                 }
             }
             _saveHistory() {
-                if (this._historySavePending) return;
-                this._historySavePending = true;
-                setTimeout(() => {
-                    this._historySavePending = false;
+                if (this._historySaveTimer) clearTimeout(this._historySaveTimer);
+                this._historySaveTimer = setTimeout(() => {
+                    this._historySaveTimer = null;
                     try {
                         const slice = this._historyBuffer.slice(-this._historyMaxLines);
                         localStorage.setItem('webx11_terminal_output', JSON.stringify(slice));
@@ -785,6 +795,33 @@
                     container.removeChild(container.firstChild);
                 }
             }
+            toggleExpand() {
+                const container = document.getElementById('terminal-container');
+                if (!container) return;
+                container.classList.toggle('terminal-expanded');
+                const on = container.classList.contains('terminal-expanded');
+                this.print(on ? 'Terminal expanded' : 'Terminal compact', 'text-muted');
+            }
+            toggleSystemMessages(arg) {
+                let desired;
+                if (arg === 'on') desired = true;
+                else if (arg === 'off') desired = false;
+                else desired = !this._showSystemMessages;
+                this._showSystemMessages = desired;
+                this._saveTerminalConfig();
+                this.print('System messages ' + (desired ? 'on' : 'off'), 'text-muted');
+            }
+            clearOutput() {
+                if (this.outputContainer) {
+                    this.outputContainer.innerHTML = '';
+                }
+                this._historyBuffer = [];
+                if (this._historySaveTimer) {
+                    clearTimeout(this._historySaveTimer);
+                    this._historySaveTimer = null;
+                }
+                try { localStorage.removeItem('webx11_terminal_output'); } catch (e) {}
+            }
             markDirty() {
                 this._dirty = true;
             }
@@ -1238,6 +1275,7 @@
                     if (parsed['terminal-hist-output'] !== undefined) this._historyMaxLines = parsed['terminal-hist-output'];
                     if (parsed['terminal-cmd-history'] !== undefined) this._historyCap = parsed['terminal-cmd-history'];
                     if (parsed['terminal-pipe-buffer'] !== undefined) this._pipeBufferSize = parsed['terminal-pipe-buffer'];
+                    this._trimOutput();
                 } catch (e) {}
             }
             async _loadExtModules(filterKeys) {
@@ -1347,7 +1385,9 @@
                 return trimmed;
             }
             async dispatchCommand(cmd, args) {
-                if (cmd === 'clear') { this.outputContainer.innerHTML = ''; this._historyBuffer = []; localStorage.removeItem('webx11_terminal_output'); return; }
+                if (cmd === 'clear') { this.clearOutput(); return; }
+                if (cmd === 'expand') { this.toggleExpand(); return; }
+                if (cmd === 'sysmsg') { this.toggleSystemMessages(args[0]); return; }
                 if (cmd === 'startup-modules') { this.openStartupModules(); return; }
                 if (cmd === 'font-size' || cmd === 'setfont') { this.setFontSize(args[0]); return; }
                 if (cmd === 'load-local' || cmd === 'loadlocal') { this.loadLocalModule(args[0]); return; }
@@ -1356,24 +1396,31 @@
                 if (cmd === 'config') {
                     if (args.length === 0) {
                         this.print('=== Terminal Config ===', 'info');
-                        this.print(`terminal-max-lines: ${this.MAX_OUTPUT_LINES} (default: 200)`, '');
+                        this.print(`terminal-max-lines: ${this.MAX_OUTPUT_LINES} (default: 100)`, '');
                         this.print(`terminal-hist-output: ${this._historyMaxLines} (default: 50)`, '');
                         this.print(`terminal-cmd-history: ${this._historyCap} (default: 200)`, '');
                         this.print(`terminal-pipe-buffer: ${this._pipeBufferSize} (default: 5000)`, '');
+                        this.print(`terminal-sysmsg: ${this._showSystemMessages ? 'on' : 'off'} (default: on)`, '');
                         this.print('Usage: config <key> <value>', 'info');
-                        this.print('Keys: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer', 'info');
+                        this.print('Keys: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer, terminal-sysmsg', 'info');
                         return;
                     }
                     const key = args[0];
                     const val = args[1];
                     if (val === undefined) { this.print('Usage: config <key> <value>', 'warning'); return; }
                     const n = parseInt(val);
+                    if (key === 'terminal-sysmsg') {
+                        this._showSystemMessages = val !== 'off';
+                        this._saveTerminalConfig();
+                        this.print(`config ${key} set to ${this._showSystemMessages ? 'on' : 'off'}`, 'success');
+                        return;
+                    }
                     if (isNaN(n) || n < 1) { this.print('Value must be a positive number', 'warning'); return; }
                     if (key === 'terminal-max-lines') { this.MAX_OUTPUT_LINES = n; }
                     else if (key === 'terminal-hist-output') { this._historyMaxLines = n; }
                     else if (key === 'terminal-cmd-history') { this._historyCap = n; }
                     else if (key === 'terminal-pipe-buffer') { this._pipeBufferSize = n; }
-                    else { this.print(`Unknown key: ${key}. Valid: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer`, 'warning'); return; }
+                    else { this.print(`Unknown key: ${key}. Valid: terminal-max-lines, terminal-hist-output, terminal-cmd-history, terminal-pipe-buffer, terminal-sysmsg`, 'warning'); return; }
                     this._saveTerminalConfig();
                     this.print(`config ${key} set to ${val}`, 'success');
                     return;
@@ -2407,6 +2454,8 @@
             printMemoryStats() {
                 const pm = typeof performance !== 'undefined' && performance.memory;
                 let heapInfo = '';
+                let domNodes = 0;
+                try { domNodes = document.getElementsByTagName('*').length; } catch (e) {}
                 if (pm) {
                     const used = (pm.usedJSHeapSize / 1048576).toFixed(1);
                     const total = (pm.totalJSHeapSize / 1048576).toFixed(1);
@@ -2423,9 +2472,11 @@
                 const output = [
                     `📊 Memory Stats`,
                     `  ${heapInfo}`,
+                    `  DOM nodes: ${domNodes}`,
                     `  Terminal lines in DOM: ${this.outputContainer.children.length}`,
                     `  History buffer: ${this._historyBuffer.length} entries`,
                     `  MAX_OUTPUT_LINES: ${this.MAX_OUTPUT_LINES}`,
+                    `  History-backed output lines: ${this._historyBuffer.length}`,
                     `  Commands in history: ${this.history.length}`
                 ].join('\n');
                 this.print(output, 'info');