diff --git a/apps/dashboard/src/components/vibe-coding/chat-adapters.ts b/apps/dashboard/src/components/vibe-coding/chat-adapters.ts
index dc4af39a8..24e383c91 100644
--- a/apps/dashboard/src/components/vibe-coding/chat-adapters.ts
+++ b/apps/dashboard/src/components/vibe-coding/chat-adapters.ts
@@ -108,21 +108,35 @@ export function createChatAdapter(
   });
 }
 
-export function createAnalyticsQueryChatAdapter(
+/**
+ * Chat adapter for the analytics table search bar's AI fallback. Uses the
+ * `filter-analytics-table` system prompt, which constrains the AI to row
+ * filters of the shape `SELECT * FROM <table> WHERE ...` so the grid's
+ * columns never change. The table being viewed is injected as a leading
+ * context exchange, mirroring the source-context pattern in
+ * `createChatAdapter` above.
+ */
+export function createAnalyticsTableFilterChatAdapter(
   backendBaseUrl: string,
   currentUser: CurrentUser | undefined,
   projectId: string | undefined,
+  tableName: string,
   onError?: (error: Error) => void,
 ): ChatModelAdapter {
   return createUnifiedAiChatAdapter({
     backendBaseUrl,
     currentUser,
-    systemPrompt: "build-analytics-query",
+    systemPrompt: "filter-analytics-table",
     tools: ["sql-query"],
     quality: "smart",
     speed: "fast",
     projectId,
     sanitizeContent: sanitizeAiContent,
+    transformMessages: (messages) => [
+      { role: "user", content: `The table I'm viewing is \`${tableName}\`.` },
+      { role: "assistant", content: `Got it — I'll only generate row filters of the form SELECT * FROM ${tableName} WHERE ... so the grid's columns stay the same.` },
+      ...messages,
+    ],
     onError: () => {
       const wrapped = new Error("Failed to get AI response. Please try again.");
       onError?.(wrapped);
diff --git a/apps/dashboard/src/components/vibe-coding/index.ts b/apps/dashboard/src/components/vibe-coding/index.ts
index bf911ccf3..48ec3b69c 100644
--- a/apps/dashboard/src/components/vibe-coding/index.ts
+++ b/apps/dashboard/src/components/vibe-coding/index.ts
@@ -1,5 +1,5 @@
 export { default as AssistantChat, type AssistantComposerApi } from './assistant-chat';
-export { createAnalyticsQueryChatAdapter, createChatAdapter, createDashboardChatAdapter, createHistoryAdapter } from './chat-adapters';
+export { createAnalyticsTableFilterChatAdapter, createChatAdapter, createDashboardChatAdapter, createHistoryAdapter } from './chat-adapters';
 export { default as CodeEditor } from './code-editor';
 export { default as VibeCodeLayout, type ViewportMode, type WysiwygDebugInfo } from './vibe-code-layout';