diff --git a/landing/src/App.tsx b/landing/src/App.tsx
index 97ec91a87..3c4c37e3e 100644
--- a/landing/src/App.tsx
+++ b/landing/src/App.tsx
@@ -1,4 +1,5 @@
-import React, { useState, useEffect, useCallback, useRef } from "react";
+import type React from "react";
+import { useState, useEffect, useCallback, useRef } from "react";
 import { Diagram } from "./components/Diagram";
 import { SlackPanel } from "./components/SlackPanel";
 import { StepIndicator } from "./components/StepIndicator";
@@ -56,7 +57,7 @@ const App: React.FC = () => {
       setCurrentStepIndex(index);
       setIsPlaying(false);
     },
-    [clearTimer],
+    [clearTimer]
   );
 
   const handleTogglePlay = useCallback(() => {
@@ -76,7 +77,7 @@ const App: React.FC = () => {
       setCurrentStepIndex(0);
       setIsPlaying(true);
     },
-    [clearTimer],
+    [clearTimer]
   );
 
   const currentStep = steps[currentStepIndex];
@@ -93,8 +94,7 @@ const App: React.FC = () => {
                 width: 32,
                 height: 32,
                 borderRadius: 8,
-                background:
-                  "linear-gradient(135deg, #10B981 0%, #059669 100%)",
+                background: "linear-gradient(135deg, #10B981 0%, #059669 100%)",
                 display: "flex",
                 alignItems: "center",
                 justifyContent: "center",
@@ -170,19 +170,13 @@ const App: React.FC = () => {
 
             {/* SVG Diagram */}
             <div style={{ flex: 1, padding: "0 16px" }}>
-              <Diagram
-                currentStep={currentStep}
-                prompt={selectedPrompt}
-              />
+              <Diagram currentStep={currentStep} prompt={selectedPrompt} />
             </div>
           </div>
 
           {/* Slack chat panel */}
           <div style={layout.slackPanel}>
-            <SlackPanel
-              steps={steps}
-              currentStepIndex={currentStepIndex}
-            />
+            <SlackPanel steps={steps} currentStepIndex={currentStepIndex} />
           </div>
         </div>
 
diff --git a/landing/src/components/AnimatedPacket.tsx b/landing/src/components/AnimatedPacket.tsx
index b66075d75..aa13ca73d 100644
--- a/landing/src/components/AnimatedPacket.tsx
+++ b/landing/src/components/AnimatedPacket.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 import { motion } from "framer-motion";
 import { NODES } from "../nodes";
 
diff --git a/landing/src/components/ConnectionLine.tsx b/landing/src/components/ConnectionLine.tsx
index 6a179455a..44d0755f2 100644
--- a/landing/src/components/ConnectionLine.tsx
+++ b/landing/src/components/ConnectionLine.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 import { colors } from "../styles";
 import { NODES } from "../nodes";
 
diff --git a/landing/src/components/Diagram.tsx b/landing/src/components/Diagram.tsx
index 6515d8c72..96d76c3f2 100644
--- a/landing/src/components/Diagram.tsx
+++ b/landing/src/components/Diagram.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 import { AnimatePresence } from "framer-motion";
 import { NODES, CONNECTIONS } from "../nodes";
 import type { FlowStep, PromptOption } from "../types";
@@ -49,10 +49,12 @@ export const Diagram: React.FC<DiagramProps> = ({ currentStep, prompt }) => {
       viewBox="0 0 800 540"
       preserveAspectRatio="xMidYMid meet"
       style={{ display: "block" }}
+      aria-hidden="true"
     >
       {/* Defs for gradients */}
       <defs>
-        <linearGradient id="lineGrad" x1="0%" y1="0%" x2="100%" y2="0%">
+        {/* biome-ignore lint/correctness/useUniqueElementIds: SVG gradient ID is scoped within this component's SVG element */}
+        <linearGradient id="diagram-lineGrad" x1="0%" y1="0%" x2="100%" y2="0%">
           <stop offset="0%" stopColor="rgba(74, 158, 255, 0.1)" />
           <stop offset="50%" stopColor="rgba(74, 158, 255, 0.3)" />
           <stop offset="100%" stopColor="rgba(74, 158, 255, 0.1)" />
diff --git a/landing/src/components/DiagramNode.tsx b/landing/src/components/DiagramNode.tsx
index ebe5c1151..5b02ba1b0 100644
--- a/landing/src/components/DiagramNode.tsx
+++ b/landing/src/components/DiagramNode.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 import { motion } from "framer-motion";
 import type { NodePosition } from "../types";
 import { NodeIcon } from "./NodeIcon";
@@ -67,12 +67,7 @@ export const DiagramNode: React.FC<DiagramNodeProps> = ({
         />
 
         {/* Icon */}
-        <foreignObject
-          x={node.x - 14}
-          y={nodeY + 10}
-          width={28}
-          height={28}
-        >
+        <foreignObject x={node.x - 14} y={nodeY + 10} width={28} height={28}>
           <div
             style={{
               color: isActive ? colors.accent : colors.textSecondary,
diff --git a/landing/src/components/NodeIcon.tsx b/landing/src/components/NodeIcon.tsx
index c819e3c57..0305ba077 100644
--- a/landing/src/components/NodeIcon.tsx
+++ b/landing/src/components/NodeIcon.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 
 interface NodeIconProps {
   type: string;
@@ -12,7 +12,13 @@ export const NodeIcon: React.FC<NodeIconProps> = ({ type, size = 28 }) => {
   switch (type) {
     case "slack":
       return (
-        <svg width={s} height={s} viewBox="0 0 24 24" fill="none">
+        <svg
+          width={s}
+          height={s}
+          viewBox="0 0 24 24"
+          fill="none"
+          aria-hidden="true"
+        >
           <path
             d="M5.042 15.165a2.528 2.528 0 0 1-2.52 2.523A2.528 2.528 0 0 1 0 15.165a2.527 2.527 0 0 1 2.522-2.52h2.52v2.52zm1.271 0a2.527 2.527 0 0 1 2.521-2.52 2.527 2.527 0 0 1 2.521 2.52v6.313A2.528 2.528 0 0 1 8.834 24a2.528 2.528 0 0 1-2.521-2.522v-6.313z"
             fill="#E01E5A"
@@ -34,7 +40,13 @@ export const NodeIcon: React.FC<NodeIconProps> = ({ type, size = 28 }) => {
 
     case "gateway":
       return (
-        <svg width={s} height={s} viewBox="0 0 24 24" fill="none">
+        <svg
+          width={s}
+          height={s}
+          viewBox="0 0 24 24"
+          fill="none"
+          aria-hidden="true"
+        >
           <rect
             x="2"
             y="3"
@@ -79,7 +91,13 @@ export const NodeIcon: React.FC<NodeIconProps> = ({ type, size = 28 }) => {
 
     case "sandbox":
       return (
-        <svg width={s} height={s} viewBox="0 0 24 24" fill="none">
+        <svg
+          width={s}
+          height={s}
+          viewBox="0 0 24 24"
+          fill="none"
+          aria-hidden="true"
+        >
           <rect
             x="3"
             y="3"
@@ -110,7 +128,13 @@ export const NodeIcon: React.FC<NodeIconProps> = ({ type, size = 28 }) => {
 
     case "mcp":
       return (
-        <svg width={s} height={s} viewBox="0 0 24 24" fill="none">
+        <svg
+          width={s}
+          height={s}
+          viewBox="0 0 24 24"
+          fill="none"
+          aria-hidden="true"
+        >
           <circle cx="12" cy="12" r="9" stroke={color} strokeWidth="1.5" />
           <path
             d="M12 3c-3 3-3 6 0 9s3 6 0 9"
@@ -134,7 +158,13 @@ export const NodeIcon: React.FC<NodeIconProps> = ({ type, size = 28 }) => {
 
     case "llm":
       return (
-        <svg width={s} height={s} viewBox="0 0 24 24" fill="none">
+        <svg
+          width={s}
+          height={s}
+          viewBox="0 0 24 24"
+          fill="none"
+          aria-hidden="true"
+        >
           <path
             d="M12 3L20 7.5V16.5L12 21L4 16.5V7.5L12 3Z"
             stroke={color}
@@ -152,7 +182,13 @@ export const NodeIcon: React.FC<NodeIconProps> = ({ type, size = 28 }) => {
 
     default:
       return (
-        <svg width={s} height={s} viewBox="0 0 24 24" fill="none">
+        <svg
+          width={s}
+          height={s}
+          viewBox="0 0 24 24"
+          fill="none"
+          aria-hidden="true"
+        >
           <circle cx="12" cy="12" r="9" stroke={color} strokeWidth="1.5" />
         </svg>
       );
diff --git a/landing/src/components/PromptSwitcher.tsx b/landing/src/components/PromptSwitcher.tsx
index d36f9fada..cb09abef4 100644
--- a/landing/src/components/PromptSwitcher.tsx
+++ b/landing/src/components/PromptSwitcher.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 import { motion } from "framer-motion";
 import type { PromptOption } from "../types";
 import { colors } from "../styles";
diff --git a/landing/src/components/SlackPanel.tsx b/landing/src/components/SlackPanel.tsx
index e9a44f030..671807a3b 100644
--- a/landing/src/components/SlackPanel.tsx
+++ b/landing/src/components/SlackPanel.tsx
@@ -1,4 +1,5 @@
-import React, { useEffect, useState, useRef } from "react";
+import type React from "react";
+import { useEffect, useState, useRef } from "react";
 import { motion, AnimatePresence } from "framer-motion";
 import { colors } from "../styles";
 import type { FlowStep } from "../types";
@@ -74,6 +75,7 @@ export const SlackPanel: React.FC<SlackPanelProps> = ({
     }
   }, [currentStepIndex, steps]);
 
+  // biome-ignore lint/correctness/useExhaustiveDependencies: scrollRef is a stable ref and does not need to be a dependency
   useEffect(() => {
     if (scrollRef.current) {
       scrollRef.current.scrollTop = scrollRef.current.scrollHeight;
@@ -307,9 +309,7 @@ const PermissionMessage: React.FC<{ text: string }> = ({ text }) => (
     >
       Permission Required
     </div>
-    <div
-      style={{ fontSize: 13, color: colors.text, marginBottom: 10 }}
-    >
+    <div style={{ fontSize: 13, color: colors.text, marginBottom: 10 }}>
       {text}
     </div>
     <div style={{ display: "flex", gap: 8 }}>
@@ -330,6 +330,7 @@ const PermissionMessage: React.FC<{ text: string }> = ({ text }) => (
         Allow for 1 hour
       </motion.button>
       <button
+        type="button"
         style={{
           background: "transparent",
           color: colors.textSecondary,
@@ -352,6 +353,7 @@ function renderMarkdownLight(text: string): React.ReactNode {
   return parts.map((part, i) => {
     if (part.startsWith("**") && part.endsWith("**")) {
       return (
+        // biome-ignore lint/suspicious/noArrayIndexKey: markdown parts are derived from static text and never reordered
         <strong key={i} style={{ fontWeight: 600 }}>
           {part.slice(2, -2)}
         </strong>
diff --git a/landing/src/components/StepIndicator.tsx b/landing/src/components/StepIndicator.tsx
index 78554484c..da4715fee 100644
--- a/landing/src/components/StepIndicator.tsx
+++ b/landing/src/components/StepIndicator.tsx
@@ -1,4 +1,4 @@
-import React from "react";
+import type React from "react";
 import { motion } from "framer-motion";
 import type { FlowStep } from "../types";
 import { colors } from "../styles";
@@ -50,7 +50,13 @@ export const StepIndicator: React.FC<StepIndicatorProps> = ({
         }}
       >
         {isPlaying ? (
-          <svg width="14" height="14" viewBox="0 0 14 14" fill="white">
+          <svg
+            width="14"
+            height="14"
+            viewBox="0 0 14 14"
+            fill="white"
+            aria-hidden="true"
+          >
             <rect x="2" y="1" width="3.5" height="12" rx="1" />
             <rect x="8.5" y="1" width="3.5" height="12" rx="1" />
           </svg>
@@ -60,6 +66,7 @@ export const StepIndicator: React.FC<StepIndicatorProps> = ({
             height="14"
             viewBox="0 0 14 14"
             fill="white"
+            aria-hidden="true"
           >
             <path d="M3 1.5L12 7L3 12.5V1.5Z" />
           </svg>
@@ -85,7 +92,13 @@ export const StepIndicator: React.FC<StepIndicatorProps> = ({
           color: colors.textSecondary,
         }}
       >
-        <svg width="14" height="14" viewBox="0 0 14 14" fill="currentColor">
+        <svg
+          width="14"
+          height="14"
+          viewBox="0 0 14 14"
+          fill="currentColor"
+          aria-hidden="true"
+        >
           <path d="M7 1a6 6 0 0 0-6 6h2a4 4 0 0 1 7.17-2.42L8.5 6H13V1.5l-1.76 1.76A5.98 5.98 0 0 0 7 1zM1 7v4.5l1.76-1.76A5.98 5.98 0 0 0 13 7h-2a4 4 0 0 1-7.17 2.42L5.5 8H1z" />
         </svg>
       </motion.button>
@@ -102,6 +115,7 @@ export const StepIndicator: React.FC<StepIndicatorProps> = ({
       >
         {steps.map((_, index) => (
           <motion.button
+            // biome-ignore lint/suspicious/noArrayIndexKey: steps array is static and never reordered
             key={index}
             onClick={() => onStepClick(index)}
             style={{
diff --git a/landing/src/main.tsx b/landing/src/main.tsx
index 385492962..f46c379cc 100644
--- a/landing/src/main.tsx
+++ b/landing/src/main.tsx
@@ -5,5 +5,5 @@ import App from "./App";
 ReactDOM.createRoot(document.getElementById("root")!).render(
   <React.StrictMode>
     <App />
-  </React.StrictMode>,
+  </React.StrictMode>
 );
diff --git a/landing/src/steps.ts b/landing/src/steps.ts
index b07cdfcc7..d71449dea 100644
--- a/landing/src/steps.ts
+++ b/landing/src/steps.ts
@@ -50,7 +50,8 @@ export function buildSteps(prompt: PromptOption): FlowStep[] {
     {
       id: "check-sandbox",
       title: "Check sandbox status",
-      description: "Gateway checks if a sandbox is already running for this user",
+      description:
+        "Gateway checks if a sandbox is already running for this user",
       activeNodes: ["gateway"],
       callout: {
         node: "gateway",
@@ -62,7 +63,8 @@ export function buildSteps(prompt: PromptOption): FlowStep[] {
     {
       id: "check-snapshot",
       title: "Look up snapshot",
-      description: "Gateway checks if a pre-built snapshot exists for the agent",
+      description:
+        "Gateway checks if a pre-built snapshot exists for the agent",
       activeNodes: ["gateway"],
       callout: {
         node: "gateway",
@@ -110,8 +112,7 @@ export function buildSteps(prompt: PromptOption): FlowStep[] {
     {
       id: "deliver-message",
       title: "Deliver prompt to sandbox",
-      description:
-        "Gateway sends the user's message to the sandbox runtime",
+      description: "Gateway sends the user's message to the sandbox runtime",
       activeNodes: ["gateway", "sandbox"],
       packet: {
         from: "gateway",
@@ -312,7 +313,8 @@ export function buildSteps(prompt: PromptOption): FlowStep[] {
     {
       id: "done",
       title: "Complete",
-      description: "User sees the response in Slack — all processing happened in an isolated sandbox",
+      description:
+        "User sees the response in Slack — all processing happened in an isolated sandbox",
       activeNodes: ["slack"],
       slackEvent: {
         type: "bot",