diff --git a/.github/workflows/pr-preview.yml b/.github/workflows/pr-preview.yml
index f93eb0f4..c70d1f60 100644
--- a/.github/workflows/pr-preview.yml
+++ b/.github/workflows/pr-preview.yml
@@ -109,10 +109,20 @@ jobs:
             echo "Dockerfile unchanged, will reuse main branch image"
           fi
 
+      - name: Clean Tailscale cache
+        run: rm -f ~/.cache/tailscale.tgz
+
+      - name: Stop any running Tailscale
+        run: |
+          sudo pkill -f tailscaled 2>/dev/null || true
+          sudo rm -f /usr/local/bin/tailscale /usr/local/bin/tailscaled 2>/dev/null || true
+          sleep 2
+
       - name: Connect to Tailscale
         uses: tailscale/github-action@v4
         with:
           authkey: ${{ secrets.TAILSCALE_AUTHKEY }}
+          use-cache: false
 
       - name: Extract PR number
         id: pr
@@ -298,10 +308,20 @@ jobs:
       contents: read
 
     steps:
+      - name: Clean Tailscale cache
+        run: rm -f ~/.cache/tailscale.tgz
+
+      - name: Stop any running Tailscale
+        run: |
+          sudo pkill -f tailscaled 2>/dev/null || true
+          sudo rm -f /usr/local/bin/tailscale /usr/local/bin/tailscaled 2>/dev/null || true
+          sleep 2
+
       - name: Connect to Tailscale
         uses: tailscale/github-action@v4
         with:
           authkey: ${{ secrets.TAILSCALE_AUTHKEY }}
+          use-cache: false
 
       - name: Extract PR number
         id: pr
diff --git a/Dockerfile b/Dockerfile
index 3a52ecfb..a922c824 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,5 @@
 # Multi-stage build for production deployment
+# Trigger rebuild: 2026-04-23
 # Builder stage
 FROM node:22-slim AS builder
 
diff --git a/src/components/preview/PreviewPanel.tsx b/src/components/preview/PreviewPanel.tsx
index 3d48cf24..5dc7fda6 100644
--- a/src/components/preview/PreviewPanel.tsx
+++ b/src/components/preview/PreviewPanel.tsx
@@ -70,6 +70,8 @@ interface PreviewPanelProps {
 		userMessageCount: number,
 		isStreaming: boolean,
 	) => void;
+	/** Callback to send a "Fix with Doce" message to the chat */
+	onFixWithDoce?: (errorMessage: string) => void;
 }
 
 type PreviewState =
@@ -92,6 +94,7 @@ export function PreviewPanel({
 	models = [],
 	onOpenFile,
 	onStreamingStateChange,
+	onFixWithDoce,
 }: PreviewPanelProps) {
 	const isMobile = useIsMobile();
 	const { baseUrl } = useBaseUrlSetting();
@@ -673,9 +676,19 @@ export function PreviewPanel({
 											{message || "Check the terminal for details."}
 										</p>
 									</div>
-									<Button variant="outline" onClick={handleRetry}>
-										Try Again
-									</Button>
+									<div className="flex items-center gap-2">
+										<Button variant="outline" onClick={handleRetry}>
+											Try Again
+										</Button>
+										{onFixWithDoce && message && (
+											<Button
+												variant="default"
+												onClick={() => onFixWithDoce(message)}
+											>
+												Fix with Doce
+											</Button>
+										)}
+									</div>
 								</div>
 							) : null}
 						</div>
diff --git a/src/components/projects/ProjectContentWrapper.tsx b/src/components/projects/ProjectContentWrapper.tsx
index 4dade1a9..25dfbb61 100644
--- a/src/components/projects/ProjectContentWrapper.tsx
+++ b/src/components/projects/ProjectContentWrapper.tsx
@@ -6,6 +6,7 @@ import { ErrorBoundary } from "@/components/error/ErrorBoundary";
 import { PreviewPanel } from "@/components/preview/PreviewPanel";
 import { ResizableSeparator } from "@/components/preview/ResizableSeparator";
 import { ContainerStartupDisplay } from "@/components/setup/ContainerStartupDisplay";
+import { useChatPanel } from "@/hooks/useChatPanel";
 import { useLiveState } from "@/hooks/useLiveState";
 import { useResizablePanel } from "@/hooks/useResizablePanel";
 import { useChatLayout } from "@/stores/useChatLayout";
@@ -57,6 +58,21 @@ export function ProjectContentWrapper({
 		(s) => s.pendingByProjectId.get(projectId) ?? null,
 	);
 
+	// Get chat send function for "Fix with Doce" feature
+	const { handleSend } = useChatPanel({
+		projectId,
+		models,
+		onStreamingStateChange: (count, streaming) => {
+			setUserMessageCount(count);
+			setIsStreaming(streaming);
+		},
+	});
+
+	const handleFixWithDoce = (errorMessage: string) => {
+		const prompt = `The preview server failed to start with this error:\n\n${errorMessage}\n\nPlease fix this issue.`;
+		void handleSend(prompt);
+	};
+
 	useEffect(() => {
 		if (!showStartupDisplay) return;
 		if (
@@ -115,10 +131,7 @@ export function ProjectContentWrapper({
 								isStreaming={isStreaming}
 								models={models}
 								onOpenFile={setFileToOpen}
-								onStreamingStateChange={(count, streaming) => {
-									setUserMessageCount(count);
-									setIsStreaming(streaming);
-								}}
+								onFixWithDoce={handleFixWithDoce}
 							/>
 						</div>
 					) : (
@@ -151,10 +164,7 @@ export function ProjectContentWrapper({
 												projectId={projectId}
 												models={models}
 												onOpenFile={setFileToOpen}
-												onStreamingStateChange={(count, streaming) => {
-													setUserMessageCount(count);
-													setIsStreaming(streaming);
-												}}
+												hideDetachToggle={false}
 											/>
 										</ErrorBoundary>
 									</motion.div>
@@ -194,6 +204,7 @@ export function ProjectContentWrapper({
 										onFileOpened={() => setFileToOpen(null)}
 										userMessageCount={userMessageCount}
 										isStreaming={isStreaming}
+										onFixWithDoce={handleFixWithDoce}
 									/>
 								</ErrorBoundary>
 							</motion.div>
@@ -203,10 +214,6 @@ export function ProjectContentWrapper({
 								projectId={projectId}
 								models={models}
 								onOpenFile={setFileToOpen}
-								onStreamingStateChange={(count, streaming) => {
-									setUserMessageCount(count);
-									setIsStreaming(streaming);
-								}}
 							/>
 						</>
 					)}
diff --git a/src/server/opencode/apiKeyValidation.ts b/src/server/opencode/apiKeyValidation.ts
index dfe53181..9358046a 100644
--- a/src/server/opencode/apiKeyValidation.ts
+++ b/src/server/opencode/apiKeyValidation.ts
@@ -67,14 +67,6 @@ function validateOpenAICompatibleKeyEffect(baseUrl: string) {
 		apiKey: string,
 	): Effect.Effect<ValidationResult, ApiKeyValidationError> =>
 		Effect.gen(function* () {
-			if (!apiKey.startsWith("sk-") && !apiKey.startsWith("api-")) {
-				return {
-					valid: false,
-					error:
-						"Invalid API key format. Keys typically start with 'sk-' or 'api-'.",
-				};
-			}
-
 			const response = yield* Effect.tryPromise({
 				try: () =>
 					fetch(`${baseUrl}/models`, {
@@ -197,14 +189,6 @@ function validateAnthropicKeyEffect(
 	apiKey: string,
 ): Effect.Effect<ValidationResult, ApiKeyValidationError> {
 	return Effect.gen(function* () {
-		if (!apiKey.startsWith("sk-ant-")) {
-			return {
-				valid: false,
-				error:
-					"Invalid Anthropic API key format. Keys should start with 'sk-ant-'.",
-			};
-		}
-
 		const response = yield* Effect.tryPromise({
 			try: () =>
 				fetch("https://api.anthropic.com/v1/models", {
@@ -276,13 +260,6 @@ function validateOpenAIKeyEffect(
 	apiKey: string,
 ): Effect.Effect<ValidationResult, ApiKeyValidationError> {
 	return Effect.gen(function* () {
-		if (!apiKey.startsWith("sk-")) {
-			return {
-				valid: false,
-				error: "Invalid OpenAI API key format. Keys should start with 'sk-'.",
-			};
-		}
-
 		const response = yield* Effect.tryPromise({
 			try: () =>
 				fetch("https://api.openai.com/v1/models", {
@@ -350,11 +327,5 @@ export async function validateOpenAIKey(
 function validateOpencodeKeyEffect(
 	apiKey: string,
 ): Effect.Effect<ValidationResult, ApiKeyValidationError> {
-	if (!apiKey.startsWith("sk-")) {
-		return Effect.succeed({
-			valid: false,
-			error: "Invalid OpenCode API key format. Keys should start with 'sk-'.",
-		});
-	}
 	return Effect.succeed({ valid: true });
 }