refactor: consolidate ai agent session flow

src/components/AiPanel.test.tsx

@@ -57,9 +57,10 @@ describe('AiPanel', () => {
     mockClearConversation.mockReset()
   })
 
-  it('renders panel with AI Chat header', () => {
+  it('renders panel with the default CLI agent header', () => {
     render(<AiPanel onClose={vi.fn()} vaultPath="/tmp/vault" />)
-    expect(screen.getByText('AI Chat')).toBeTruthy()
+    expect(screen.getByText('AI Agent')).toBeTruthy()
+    expect(screen.getByText('Claude Code')).toBeTruthy()
   })
 
   it('renders data-testid ai-panel', () => {
@@ -86,7 +87,7 @@ describe('AiPanel', () => {
 
   it('renders empty state without context', () => {
     render(<AiPanel onClose={vi.fn()} vaultPath="/tmp/vault" />)
-    expect(screen.getByText('Open a note, then ask the AI about it')).toBeTruthy()
+    expect(screen.getByText('Open a note, then ask Claude Code about it')).toBeTruthy()
   })
 
   it('renders contextual empty state when active entry is provided', () => {
@@ -94,7 +95,7 @@ describe('AiPanel', () => {
     render(
       <AiPanel onClose={vi.fn()} vaultPath="/tmp/vault" activeEntry={entry} entries={[entry]} />
     )
-    expect(screen.getByText('Ask about this note and its linked context')).toBeTruthy()
+    expect(screen.getByText('Ask Claude Code about this note and its linked context')).toBeTruthy()
   })
 
   it('shows context bar with active entry title', () => {

src/components/AiPanel.tsx

@@ -56,7 +56,6 @@ export function AiPanelView({
 }: AiPanelViewProps) {
   const defaultAiAgent = providedDefaultAiAgent ?? DEFAULT_AI_AGENT
   const defaultAiAgentReady = providedDefaultAiAgentReady ?? true
-  const useLegacyAiExperience = providedDefaultAiAgent === undefined && providedDefaultAiAgentReady === undefined
   const inputRef = useRef<HTMLDivElement>(null)
   const panelRef = useRef<HTMLElement>(null)
   const agentLabel = getAiAgentDefinition(defaultAiAgent).label
@@ -100,7 +99,6 @@ export function AiPanelView({
       <AiPanelHeader
         agentLabel={agentLabel}
         agentReady={defaultAiAgentReady}
-        legacyCopy={useLegacyAiExperience}
         onClose={onClose}
         onNewChat={handleNewChat}
       />
@@ -110,7 +108,6 @@ export function AiPanelView({
       <AiPanelMessageHistory
         agentLabel={agentLabel}
         agentReady={defaultAiAgentReady}
-        legacyCopy={useLegacyAiExperience}
         messages={agent.messages}
         isActive={isActive}
         onOpenNote={onOpenNote}

src/components/AiPanelChrome.tsx

@@ -10,7 +10,6 @@ import type { VaultEntry } from '../types'
 interface AiPanelHeaderProps {
   agentLabel: string
   agentReady: boolean
-  legacyCopy: boolean
   onClose: () => void
   onNewChat: () => void
 }
@@ -23,7 +22,6 @@ interface AiPanelContextBarProps {
 interface AiPanelMessageHistoryProps {
   agentLabel: string
   agentReady: boolean
-  legacyCopy: boolean
   messages: AiAgentMessage[]
   isActive: boolean
   onOpenNote?: (path: string) => void
@@ -58,8 +56,7 @@ function AiPanelEmptyState({
   agentLabel,
   agentReady,
   hasContext,
-  legacyCopy,
-}: Pick<AiPanelMessageHistoryProps, 'agentLabel' | 'agentReady' | 'hasContext' | 'legacyCopy'>) {
+}: Pick<AiPanelMessageHistoryProps, 'agentLabel' | 'agentReady' | 'hasContext'>) {
   if (!agentReady) {
     return (
       <div
@@ -85,8 +82,8 @@ function AiPanelEmptyState({
       <Robot size={24} style={{ marginBottom: 8, opacity: 0.5 }} />
       <p style={{ fontSize: 13, margin: '0 0 4px' }}>
         {hasContext
-          ? legacyCopy ? 'Ask about this note and its linked context' : `Ask ${agentLabel} about this note and its linked context`
-          : legacyCopy ? 'Open a note, then ask the AI about it' : `Open a note, then ask ${agentLabel} about it`
+          ? `Ask ${agentLabel} about this note and its linked context`
+          : `Open a note, then ask ${agentLabel} about it`
         }
       </p>
       <p style={{ fontSize: 11, margin: 0, opacity: 0.6 }}>
@@ -102,7 +99,6 @@ function AiPanelEmptyState({
 export function AiPanelHeader({
   agentLabel,
   agentReady,
-  legacyCopy,
   onClose,
   onNewChat,
 }: AiPanelHeaderProps) {
@@ -114,14 +110,12 @@ export function AiPanelHeader({
       <Robot size={16} className="shrink-0 text-muted-foreground" />
       <div className="flex flex-1 flex-col overflow-hidden">
         <span className="text-muted-foreground" style={{ fontSize: 13, fontWeight: 600 }}>
-          {legacyCopy ? 'AI Chat' : 'AI Agent'}
+          AI Agent
+        </span>
+        <span className="truncate text-[11px] text-muted-foreground">
+          {agentLabel}
+          {!agentReady ? ' · not installed' : ''}
         </span>
-        {!legacyCopy && (
-          <span className="truncate text-[11px] text-muted-foreground">
-            {agentLabel}
-            {!agentReady ? ' · not installed' : ''}
-          </span>
-        )}
       </div>
       <button
         className="shrink-0 border-none bg-transparent p-1 text-muted-foreground cursor-pointer hover:text-foreground transition-colors"
@@ -161,7 +155,6 @@ export function AiPanelContextBar({ activeEntry, linkedCount }: AiPanelContextBa
 export function AiPanelMessageHistory({
   agentLabel,
   agentReady,
-  legacyCopy,
   messages,
   isActive,
   onOpenNote,
@@ -180,7 +173,6 @@ export function AiPanelMessageHistory({
         <AiPanelEmptyState
           agentLabel={agentLabel}
           agentReady={agentReady}
-          legacyCopy={legacyCopy}
           hasContext={hasContext}
         />
       )}