diff --git a/.gitignore b/.gitignore
index 8266f60..1db18fb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,3 +37,4 @@ next-env.d.ts
 # logs
 logs
 *.log
+fix_*.py
diff --git a/README.md b/README.md
index 1f74f02..b27df84 100644
--- a/README.md
+++ b/README.md
@@ -143,6 +143,8 @@ This project follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 | Version | Date | Highlights |
 |---------|------|------------|
+| [1.6.0](CHANGELOG.md#160---2026-03-18) | 2026-03-18 20:34 | SEO web audit, URL fetching, auto web search for SEO mode |
+| [1.5.0](CHANGELOG.md#150---2026-03-18) | 2026-03-18 20:29 | Modification progress overlay, preview blink fix |
 | [1.4.0](CHANGELOG.md#140---2026-03-18) | 2026-03-18 19:57 | Review Code button, web search grounding, responsive preview, model selector fix |
 | [1.3.0](CHANGELOG.md#130---2026-03-18) | 2026-03-18 18:51 | Plan-first workflow, OpenRouter, post-coding UX, enhanced prompt engine |
 | [1.2.0](CHANGELOG.md#120---2026-01-19) | 2026-01-19 19:16 | SEO agent fixes, Z.AI API validation |
diff --git a/fix_device_array.py b/fix_device_array.py
deleted file mode 100644
index 05d13c6..0000000
--- a/fix_device_array.py
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/usr/bin/env python3
-fp = '/home/uroma/promptarch/components/AIAssist.tsx'
-with open(fp, 'r') as f:
-    content = f.read()
-
-# Fix the array that lost all its quotes
-old = '{([[full, Full], [desktop, Desktop], [tablet, Tablet], [mobile, Mobile]] as const).map(([size, label]) => ('
-new = '{([["full", "Full"], ["desktop", "Desktop"], ["tablet", "Tablet"], ["mobile", "Mobile"]] as const).map(([size, label]) => ('
-
-if old in content:
-    content = content.replace(old, new, 1)
-    print('Fixed array quotes')
-else:
-    print('WARNING: Could not find array')
-
-with open(fp, 'w') as f:
-    f.write(content)
diff --git a/fix_device_buttons.py b/fix_device_buttons.py
deleted file mode 100644
index 650d691..0000000
--- a/fix_device_buttons.py
+++ /dev/null
@@ -1,46 +0,0 @@
-#!/usr/bin/env python3
-fp = '/home/uroma/promptarch/components/AIAssist.tsx'
-with open(fp, 'r') as f:
-    content = f.read()
-
-changes = 0
-
-# Fix 1: viewMode === preview -> viewMode === "preview"
-old = 'viewMode === preview && ('
-new = 'viewMode === "preview" && ('
-if old in content:
-    content = content.replace(old, new, 1)
-    changes += 1
-    print('Fix 1: viewMode quote restored')
-
-# Fix 2: className=flex -> className="flex"
-old = 'className=flex items-center gap-1 mt-1.5'
-new = 'className="flex items-center gap-1 mt-1.5"'
-if old in content:
-    content = content.replace(old, new, 1)
-    changes += 1
-    print('Fix 2: className quote restored')
-
-# Fix 3: Restore quotes in the device button className
-# The issue is the className prop lost its opening quote and the string content lost quotes
-old_btn_class = '''className={cn(
-                                                            px-2 py-1 text-[9px] font-black uppercase rounded-md transition-all border,
-                                                            deviceSize === size
-                                                                ? bg-blue-500 text-white border-blue-500 shadow-md
-                                                                : text-blue-300/50 border-transparent hover:text-blue-200 hover:bg-blue-900/30
-                                                        )}'''
-new_btn_class = '''className={cn(
-                                                            "px-2 py-1 text-[9px] font-black uppercase rounded-md transition-all border",
-                                                            deviceSize === size
-                                                                ? "bg-blue-500 text-white border-blue-500 shadow-md"
-                                                                : "text-blue-300/50 border-transparent hover:text-blue-200 hover:bg-blue-900/30"
-                                                        )}'''
-if old_btn_class in content:
-    content = content.replace(old_btn_class, new_btn_class, 1)
-    changes += 1
-    print('Fix 3: Button className quotes restored')
-
-with open(fp, 'w') as f:
-    f.write(content)
-
-print(f'Applied {changes}/3 fixes')
diff --git a/fix_device_size.py b/fix_device_size.py
deleted file mode 100644
index 182d6b4..0000000
--- a/fix_device_size.py
+++ /dev/null
@@ -1,43 +0,0 @@
-#!/usr/bin/env python3
-fp = '/home/uroma/promptarch/components/AIAssist.tsx'
-with open(fp, 'r') as f:
-    lines = f.readlines()
-
-changes = 0
-
-# CHANGE 1: Add deviceSize state after viewMode state
-for i, line in enumerate(lines):
-    if 'const [viewMode, setViewMode]' in line and 'useState' in line:
-        new_lines = [
-            line,
-            '    const [deviceSize, setDeviceSize] = useState<"full" | "desktop" | "tablet" | "mobile">("full");\n',
-            '    const deviceWidths: Record<string, string> = { full: "100%", desktop: "1280px", tablet: "768px", mobile: "375px" };\n',
-        ]
-        lines[i:i+1] = new_lines
-        changes += 1
-        print('Change 1: Added deviceSize state')
-        break
-
-# CHANGE 2: Find canvas wrapper and add device-size wrapper around LiveCanvas
-for i, line in enumerate(lines):
-    if 'flex-1 overflow-auto relative bg-[#050505]' in line and i > 1400:
-        print('Found canvas wrapper at line', i+1)
-        # Find LiveCanvas line
-        for j in range(i, min(i+10, len(lines))):
-            if '<LiveCanvas' in lines[j]:
-                # Insert wrapper div before LiveCanvas
-                indent = '                                        '
-                wrapper = indent + '<div className="mx-auto transition-all duration-300 h-full"\n'
-                wrapper += indent + '     style={deviceSize !== "full"\n'
-                wrapper += indent + '       ? { width: deviceWidths[deviceSize], maxWidth: "100%", border: "1px solid rgba(30,58,138,0.3)", borderRadius: "12px", overflow: "hidden", boxShadow: "0 20px 60px rgba(0,0,0,0.5)" }\n'
-                wrapper += indent + '       : undefined}>\n'
-                lines[j:j] = [wrapper]
-                changes += 1
-                print('Change 2: Added device wrapper before LiveCanvas')
-                break
-        break
-
-with open(fp, 'w') as f:
-    f.writelines(lines)
-
-print('Applied', changes, 'changes')
diff --git a/fix_device_size2.py b/fix_device_size2.py
deleted file mode 100644
index d25f829..0000000
--- a/fix_device_size2.py
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/usr/bin/env python3
-fp = '/home/uroma/promptarch/components/AIAssist.tsx'
-with open(fp, 'r') as f:
-    lines = f.readlines()
-
-changes = 0
-
-for i, line in enumerate(lines):
-    if 'flex-1 overflow-hidden relative' in line and i > 1400:
-        lines[i] = '                            <div className="flex-1 overflow-auto relative bg-[#050505]">\n'
-        changes += 1
-        print('Fixed overflow at line', i+1)
-
-        for j in range(i, min(i+10, len(lines))):
-            if '<LiveCanvas' in lines[j]:
-                ind = '                                        '
-                w = ind + '<div className="mx-auto transition-all duration-300 h-full"\n'
-                w += ind + '     style={deviceSize !== "full"\n'
-                w += ind + '       ? { width: deviceWidths[deviceSize], maxWidth: "100%",\n'
-                w += ind + '           border: "1px solid rgba(30,58,138,0.3)",\n'
-                w += ind + '           borderRadius: "12px", overflow: "hidden",\n'
-                w += ind + '           boxShadow: "0 20px 60px rgba(0,0,0,0.5)" }\n'
-                w += ind + '       : undefined}>\n'
-                lines[j:j] = [w]
-                changes += 1
-                print('Added device wrapper before LiveCanvas at line', j+1)
-                break
-        break
-
-with open(fp, 'w') as f:
-    f.writelines(lines)
-
-print('Applied', changes, 'changes')
diff --git a/fix_reviewcode.py b/fix_reviewcode.py
deleted file mode 100644
index a6a6619..0000000
--- a/fix_reviewcode.py
+++ /dev/null
@@ -1,31 +0,0 @@
-#!/usr/bin/env python3
-"""Fix the broken reviewCode template literal."""
-
-fp = '/home/uroma/promptarch/components/AIAssist.tsx'
-with open(fp, 'r') as f:
-    content = f.read()
-
-# Find and replace the broken reviewPrompt line
-# The problem: backticks inside template literal need to be escaped with \`
-old_line = '        const reviewPrompt = `Please review this generated code for bugs, security issues, performance problems, and best practices. Provide specific improvements:\\n\\n\\\\`\\\\`\\\\`${previewData.language || "code"}\\n${previewData.data}\\n\\\\`\\\\`\\\\`';'
-
-new_line = '        const reviewPrompt = "Please review this generated code for bugs, security issues, performance problems, and best practices. Provide specific improvements:\\n\\n\`\`\`" + (previewData.language || "code") + "\\n" + previewData.data + "\\n\`\`\`";'
-
-if old_line in content:
-    content = content.replace(old_line, new_line, 1)
-    print("Fixed reviewCode template literal")
-else:
-    # Try with the actual escaped content
-    # Let's just find it by the function start and replace the whole function
-    print("Trying line-by-line approach...")
-    lines = content.split('\n')
-    for i, line in enumerate(lines):
-        if 'const reviewPrompt' in line and 'review this generated code' in line:
-            print(f"Found at line {i+1}: {line[:80]}...")
-            lines[i] = new_line
-            print("Fixed")
-            break
-    content = '\n'.join(lines)
-
-with open(fp, 'w') as f:
-    f.write(content)
diff --git a/fix_reviewcode2.py b/fix_reviewcode2.py
deleted file mode 100644
index 2e6dae9..0000000
--- a/fix_reviewcode2.py
+++ /dev/null
@@ -1,18 +0,0 @@
-#!/usr/bin/env python3
-fp = '/home/uroma/promptarch/components/AIAssist.tsx'
-with open(fp, 'r') as f:
-    lines = f.readlines()
-
-bt = chr(96)  # backtick character
-nl = chr(92) + 'n'  # \n
-
-for i, line in enumerate(lines):
-    if 'const reviewPrompt' in line and 'review this generated code' in line:
-        new_line = '        const reviewPrompt = "Please review this generated code for bugs, security issues, performance problems, and best practices. Provide specific improvements:" + "' + nl + '" + "' + nl + '" + "' + bt*3 + '" + (previewData.language || "code") + "' + nl + '" + previewData.data + "' + nl + '" + "' + bt*3 + '";\n'
-        lines[i] = new_line
-        print(f'Fixed line {i+1}')
-        print(repr(new_line))
-        break
-
-with open(fp, 'w') as f:
-    f.writelines(lines)
diff --git a/fix_v1.4.0.py b/fix_v1.4.0.py
deleted file mode 100644
index 5cd144f..0000000
--- a/fix_v1.4.0.py
+++ /dev/null
@@ -1,210 +0,0 @@
-#!/usr/bin/env python3
-"""Apply v1.4.0 improvements: model color fix, review button, web search grounding."""
-
-import re
-
-fp = '/home/uroma/promptarch/components/AIAssist.tsx'
-with open(fp, 'r') as f:
-    content = f.read()
-
-changes = 0
-
-# ============================================================
-# CHANGE 1: Fix model selector text color
-# ============================================================
-old_option = '{availableModels.map(m => <option key={m} value={m}>{m}</option>)}'
-new_option = '{availableModels.map(m => <option key={m} value={m} className="bg-[#0b1414] text-white">{m}</option>)}'
-
-if old_option in content:
-    content = content.replace(old_option, new_option, 1)
-    changes += 1
-    print("Change 1: Fixed <option> text color to white")
-else:
-    print("WARNING: Could not find option map")
-
-# Also add text-white to the <select> className
-old_select_class = 'className="text-[10px] font-bold h-8 px-2 rounded-lg border border-blue-100 dark:border-blue-900 bg-white/80 dark:bg-[#0b1414]/80 focus:ring-2 focus:ring-blue-400/30 transition-all outline-none min-w-[120px]"'
-new_select_class = 'className="text-[10px] font-bold h-8 px-2 rounded-lg border border-blue-100 dark:border-blue-900 bg-white/80 dark:bg-[#0b1414]/80 focus:ring-2 focus:ring-blue-400/30 transition-all outline-none min-w-[120px] text-slate-900 dark:text-white"'
-
-if old_select_class in content:
-    content = content.replace(old_select_class, new_select_class, 1)
-    changes += 1
-    print("Change 1b: Added text-white to select element")
-else:
-    print("WARNING: Could not find select className")
-
-# ============================================================
-# CHANGE 2: Add ShieldCheck to lucide-react imports
-# ============================================================
-old_import = '    Wand2, LayoutPanelLeft, Play, Orbit, Plus, Key'
-new_import = '    Wand2, LayoutPanelLeft, Play, Orbit, Plus, Key, ShieldCheck'
-
-if old_import in content:
-    content = content.replace(old_import, new_import, 1)
-    changes += 1
-    print("Change 2: Added ShieldCheck to imports")
-else:
-    print("WARNING: Could not find lucide import line")
-
-# ============================================================
-# CHANGE 3: Add reviewCode function after approveAndGenerate
-# ============================================================
-old_approve = '''    const approveAndGenerate = () => {
-        setAssistStep("generating");
-        handleSendMessage(undefined, "Approved. Please generate the code according to the plan.", true);
-    };'''
-
-new_approve = '''    const approveAndGenerate = () => {
-        setAssistStep("generating");
-        handleSendMessage(undefined, "Approved. Please generate the code according to the plan.", true);
-    };
-
-    const reviewCode = () => {
-        if (!previewData?.data) return;
-        setAssistStep("generating");
-        const reviewPrompt = `Please review this generated code for bugs, security issues, performance problems, and best practices. Provide specific improvements:\\n\\n\\\`\\\`\\\`${previewData.language || "code"}\\n${previewData.data}\\n\\\`\\\`\\\``;
-        handleSendMessage(undefined, reviewPrompt, true);
-    };'''
-
-if old_approve in content:
-    content = content.replace(old_approve, new_approve, 1)
-    changes += 1
-    print("Change 3: Added reviewCode function")
-else:
-    print("WARNING: Could not find approveAndGenerate block")
-
-# ============================================================
-# CHANGE 4: Add Review Code button (grid-cols-2 -> 3)
-# ============================================================
-old_grid = '''<div className="mt-4 grid grid-cols-2 gap-2 animate-in zoom-in-95 duration-300">
-                                            <Button
-                                                onClick={() => { setShowCanvas(true); setViewMode(isPreviewRenderable(previewData as PreviewData) ? "preview" : "code"); }}
-                                                className="bg-blue-600 hover:bg-blue-500 text-white font-black uppercase text-[10px] tracking-widest py-4 rounded-xl shadow-lg shadow-blue-500/20"
-                                            >
-                                                <Zap className="h-3.5 w-3.5 mr-1.5" /> {t.activateArtifact}
-                                            </Button>
-                                            <Button
-                                                onClick={() => { setAssistStep("idle"); setInput("Modify this: "); setTimeout(() => { const el = document.querySelector<HTMLInputElement>(`[data-ai-input]`); if (el) el.focus(); }, 100); }}
-                                                variant="outline"
-                                                className="bg-slate-500/10 hover:bg-slate-500/20 border-slate-500/20 text-slate-300 font-black uppercase text-[10px] tracking-widest py-4 rounded-xl"
-                                            >
-                                                <LayoutPanelLeft className="h-3.5 w-3.5 mr-1.5" /> Request Modifications
-                                            </Button>
-                                        </div>'''
-
-new_grid = '''<div className="mt-4 grid grid-cols-3 gap-2 animate-in zoom-in-95 duration-300">
-                                            <Button
-                                                onClick={() => { setShowCanvas(true); setViewMode(isPreviewRenderable(previewData as PreviewData) ? "preview" : "code"); }}
-                                                className="bg-blue-600 hover:bg-blue-500 text-white font-black uppercase text-[10px] tracking-widest py-4 rounded-xl shadow-lg shadow-blue-500/20"
-                                            >
-                                                <Zap className="h-3.5 w-3.5 mr-1.5" /> {t.activateArtifact}
-                                            </Button>
-                                            <Button
-                                                onClick={reviewCode}
-                                                disabled={!previewData?.data}
-                                                variant="outline"
-                                                className="bg-emerald-500/10 hover:bg-emerald-500/20 border-emerald-500/20 text-emerald-300 font-black uppercase text-[10px] tracking-widest py-4 rounded-xl"
-                                            >
-                                                <ShieldCheck className="h-3.5 w-3.5 mr-1.5" /> Review Code
-                                            </Button>
-                                            <Button
-                                                onClick={() => { setAssistStep("idle"); setInput("Modify this: "); setTimeout(() => { const el = document.querySelector<HTMLInputElement>(`[data-ai-input]`); if (el) el.focus(); }, 100); }}
-                                                variant="outline"
-                                                className="bg-slate-500/10 hover:bg-slate-500/20 border-slate-500/20 text-slate-300 font-black uppercase text-[10px] tracking-widest py-4 rounded-xl"
-                                            >
-                                                <LayoutPanelLeft className="h-3.5 w-3.5 mr-1.5" /> Request Modifications
-                                            </Button>
-                                        </div>'''
-
-if old_grid in content:
-    content = content.replace(old_grid, new_grid, 1)
-    changes += 1
-    print("Change 4: Added Review Code button (grid-cols-3)")
-else:
-    print("WARNING: Could not find post-coding buttons block")
-
-# ============================================================
-# CHANGE 5: Add webSearchEnabled state after isProcessing
-# ============================================================
-old_state = '    const [isProcessing, setIsProcessing] = useState(false);'
-new_state = '    const [isProcessing, setIsProcessing] = useState(false);\n    const [webSearchEnabled, setWebSearchEnabled] = useState(false);'
-
-if old_state in content:
-    content = content.replace(old_state, new_state, 1)
-    changes += 1
-    print("Change 5: Added webSearchEnabled state")
-else:
-    print("WARNING: Could not find isProcessing state")
-
-# ============================================================
-# CHANGE 6: Add web search toggle button in toolbar
-# (After the model select closing </select> and before the
-#  canvas toggle div)
-# ============================================================
-old_toolbar = '''                                </select>
-                                <div className="flex items-center gap-1 ml-1 border-l border-blue-100 dark:border-blue-900 pl-2">'''
-
-new_toolbar = '''                                </select>
-                                <button
-                                    onClick={() => setWebSearchEnabled(prev => !prev)}
-                                    className={`flex items-center gap-1 h-8 px-2 rounded-lg text-[10px] font-bold transition-all border ${
-                                        webSearchEnabled
-                                            ? "bg-amber-500/20 border-amber-500/40 text-amber-300"
-                                            : "bg-transparent border-transparent text-slate-400/70 hover:text-slate-300 hover:bg-slate-500/10"
-                                    }`}
-                                >
-                                    <Search className="h-3.5 w-3.5" /> {webSearchEnabled ? "ON" : "Search"}
-                                </button>
-                                <div className="flex items-center gap-1 ml-1 border-l border-blue-100 dark:border-blue-900 pl-2">'''
-
-if old_toolbar in content:
-    content = content.replace(old_toolbar, new_toolbar, 1)
-    changes += 1
-    print("Change 6: Added web search toggle button")
-else:
-    print("WARNING: Could not find toolbar insertion point")
-
-# ============================================================
-# CHANGE 7: Add web search enrichment in handleSendMessage
-# Before generateAIAssistStream call, after formattedHistory
-# ============================================================
-old_stream = '''            const response = await modelAdapter.generateAIAssistStream(
-                {
-                    messages: [...formattedHistory, { role: "user" as const, content: finalInput, timestamp: new Date() }],'''
-
-new_stream = '''            // Web search grounding: enrich prompt with search results if enabled
-            let enrichedInput = finalInput;
-            if (webSearchEnabled) {
-                setStatus("Searching the web...");
-                try {
-                    const searchRes = await fetch("/api/search?q=" + encodeURIComponent(finalInput.split("\\n")[0].substring(0, 200)));
-                    if (searchRes.ok) {
-                        const searchData = await searchRes.json();
-                        if (searchData.results && searchData.results.length > 0) {
-                            const searchContext = searchData.results.slice(0, 5).map((r: { title: string; url: string; snippet: string }, i: number) =>
-                                `${i + 1}. **${r.title}** (${r.url}) - ${r.snippet}`
-                            ).join("\\n");
-                            enrichedInput = `[WEB SEARCH CONTEXT - Top 5 relevant results]\\n${searchContext}\\n\\n---\\nUsing the above search results as reference context, answer the user query. Cite sources when relevant.\\n\\nUser query: ${finalInput}`;
-                        }
-                    }
-                } catch (e) {
-                    console.warn("Web search failed:", e);
-                }
-                setStatus(null);
-            }
-
-            const response = await modelAdapter.generateAIAssistStream(
-                {
-                    messages: [...formattedHistory, { role: "user" as const, content: enrichedInput, timestamp: new Date() }],'''
-
-if old_stream in content:
-    content = content.replace(old_stream, new_stream, 1)
-    changes += 1
-    print("Change 7: Added web search enrichment before AI call")
-else:
-    print("WARNING: Could not find generateAIAssistStream call")
-
-with open(fp, 'w') as f:
-    f.write(content)
-
-print(f"\nApplied {changes}/7 changes to AIAssist.tsx")