refactor(FN-2162): rename kb-agent identifiers to fn-agent

- Rename core loader, dashboard server chat/planning routes, and frontend agent IDs/storage keys from kb-agent to fn-agent naming
- Update dashboard hooks and components (agent list, chat view, quick chat) to use the new fn agent key prefixes consistently
- Refresh engine, dashboard, core, and CLI tests/mocks to remove remaining kb-agent route and temp prefix references
- Update storage/gap-analysis docs to reflect fn agent key names and add a @gsxdsm/fusion patch changeset for the rename

packages/core/src/agent-store.test.ts

@@ -21,7 +21,7 @@ import { createHash } from "node:crypto";
 import { CheckoutConflictError, type AgentCapability, type AgentState } from "./types.js";
 
 function makeTmpDir(): string {
-  return mkdtempSync(join(tmpdir(), "kb-agent-store-test-"));
+  return mkdtempSync(join(tmpdir(), "fn-agent-store-test-"));
 }
 
 describe("AgentStore", () => {

packages/core/src/ai-engine-loader.ts

@@ -39,7 +39,7 @@ const engineReady: Promise<void> = initEngine();
  * Returns `createFnAgent` from `@fusion/engine`, or `undefined` if the engine
  * could not be loaded (typical in tests or when engine isn't installed).
  */
-export async function getKbAgent(): Promise<CreateFnAgent> {
+export async function getFnAgent(): Promise<CreateFnAgent> {
   await engineReady;
   return createFnAgent;
 }

packages/core/src/ai-summarize.ts

@@ -11,7 +11,7 @@
  * - Text length validation (201-2000 characters)
  */
 
-import { getKbAgent, type AgentMessage } from "./ai-engine-loader.js";
+import { getFnAgent, type AgentMessage } from "./ai-engine-loader.js";
 
 // ── Constants ───────────────────────────────────────────────────────────────
 
@@ -209,7 +209,7 @@ export async function summarizeTitle(
     return null; // Too short for summarization
   }
 
-  const createFnAgent = await getKbAgent();
+  const createFnAgent = await getFnAgent();
   if (!createFnAgent) {
     if (DEBUG) console.log("[ai-summarize] AI engine not available");
     throw new AiServiceError("AI engine not available");

packages/core/src/memory-compaction.ts

@@ -15,7 +15,7 @@
 
 import type { ProjectSettings } from "./types.js";
 import type { ScheduledTaskCreateInput } from "./automation.js";
-import { getKbAgent, type AgentMessage } from "./ai-engine-loader.js";
+import { getFnAgent, type AgentMessage } from "./ai-engine-loader.js";
 
 // ── Constants ───────────────────────────────────────────────────────────────
 
@@ -79,7 +79,7 @@ export async function compactMemoryWithAi(
   provider?: string,
   modelId?: string
 ): Promise<string> {
-  const createFnAgent = await getKbAgent();
+  const createFnAgent = await getFnAgent();
   if (!createFnAgent) {
     if (DEBUG) console.log("[memory-compaction] AI engine not available");
     throw new AiServiceError("AI engine not available");