fix(tui): slash.exec _pending_input commands, tool ANSI, terminal title

Additional TUI fixes discovered in the same audit:

1. /plan slash command was silently lost — process_command() queues the
   plan skill invocation onto _pending_input which nobody reads in the
   slash worker subprocess.  Now intercepted in slash.exec and routed
   through command.dispatch with a new 'send' dispatch type.

   Same interception added for /retry, /queue, /steer as safety nets
   (these already have correct TUI-local handlers in core.ts, but the
   server-side guard prevents regressions if the local handler is
   bypassed).

2. Tool results were stripping ANSI escape codes — the messageLine
   component used stripAnsi() + plain <Text> for tool role messages,
   losing all color/styling from terminal, search_files, etc.  Now
   uses <Ansi> component (already imported) when ANSI is detected.

3. Terminal tab title now shows model + busy status via useTerminalTitle
   hook from @hermes/ink (was never used).  Users can identify Hermes
   tabs and see at a glance whether the agent is busy or ready.

4. Added 'send' variant to CommandDispatchResponse type + asCommandDispatch
   parser + createSlashHandler handler for commands that need to inject
   a message into the conversation (plan, queue fallback, steer fallback).

ui-tui/src/__tests__/asCommandDispatch.test.ts

@@ -3,7 +3,7 @@ import { describe, expect, it } from 'vitest'
 import { asCommandDispatch } from '../lib/rpc.js'
 
 describe('asCommandDispatch', () => {
-  it('parses exec, alias, and skill', () => {
+  it('parses exec, alias, skill, and send', () => {
     expect(asCommandDispatch({ type: 'exec', output: 'hi' })).toEqual({ type: 'exec', output: 'hi' })
     expect(asCommandDispatch({ type: 'alias', target: 'help' })).toEqual({ type: 'alias', target: 'help' })
     expect(asCommandDispatch({ type: 'skill', name: 'x', message: 'do' })).toEqual({
@@ -11,11 +11,17 @@ describe('asCommandDispatch', () => {
       name: 'x',
       message: 'do'
     })
+    expect(asCommandDispatch({ type: 'send', message: 'hello world' })).toEqual({
+      type: 'send',
+      message: 'hello world'
+    })
   })
 
   it('rejects malformed payloads', () => {
     expect(asCommandDispatch(null)).toBeNull()
     expect(asCommandDispatch({ type: 'alias' })).toBeNull()
     expect(asCommandDispatch({ type: 'skill', name: 1 })).toBeNull()
+    expect(asCommandDispatch({ type: 'send' })).toBeNull()
+    expect(asCommandDispatch({ type: 'send', message: 42 })).toBeNull()
   })
 })

ui-tui/src/__tests__/createSlashHandler.test.ts

@@ -152,6 +152,36 @@ describe('createSlashHandler', () => {
     })
     expect(ctx.transcript.send).toHaveBeenCalledWith(skillMessage)
   })
+
+  it('handles send-type dispatch for /plan command', async () => {
+    const planMessage = 'Plan skill content loaded'
+
+    const ctx = buildCtx({
+      gateway: {
+        gw: {
+          getLogTail: vi.fn(() => ''),
+          request: vi.fn((method: string) => {
+            if (method === 'slash.exec') {
+              return Promise.reject(new Error('pending-input command'))
+            }
+
+            if (method === 'command.dispatch') {
+              return Promise.resolve({ type: 'send', message: planMessage })
+            }
+
+            return Promise.resolve({})
+          })
+        },
+        rpc: vi.fn(() => Promise.resolve({}))
+      }
+    })
+
+    const h = createSlashHandler(ctx)
+    expect(h('/plan create a REST API')).toBe(true)
+    await vi.waitFor(() => {
+      expect(ctx.transcript.send).toHaveBeenCalledWith(planMessage)
+    })
+  })
 })
 
 const buildCtx = (overrides: Partial<Ctx> = {}): Ctx => ({

ui-tui/src/app/createSlashHandler.ts

@@ -105,6 +105,10 @@ export function createSlashHandler(ctx: SlashHandlerContext): (cmd: string) => b
 
               return d.message?.trim() ? send(d.message) : sys(`/${parsed.name}: skill payload missing message`)
             }
+
+            if (d.type === 'send') {
+              return d.message?.trim() ? send(d.message) : sys(`/${parsed.name}: empty message`)
+            }
           })
           .catch(guardedErr)
       })

ui-tui/src/app/useMainApp.ts

@@ -1,4 +1,4 @@
-import { type ScrollBoxHandle, useApp, useHasSelection, useSelection, useStdout } from '@hermes/ink'
+import { type ScrollBoxHandle, useApp, useHasSelection, useSelection, useStdout, useTerminalTitle } from '@hermes/ink'
 import { useStore } from '@nanostores/react'
 import { useCallback, useEffect, useMemo, useRef, useState } from 'react'
 
@@ -284,6 +284,13 @@ export function useMainApp(gw: GatewayClient) {
 
   useConfigSync({ gw, setBellOnComplete, setVoiceEnabled, sid: ui.sid })
 
+  // ── Terminal tab title ─────────────────────────────────────────────
+  // Show model name + status so users can identify the Hermes tab.
+  const shortModel = ui.info?.model?.replace(/^.*\//, '') ?? ''
+  const titleStatus = ui.busy ? '⏳' : '✓'
+  const terminalTitle = shortModel ? `${titleStatus} ${shortModel} — Hermes` : 'Hermes'
+  useTerminalTitle(terminalTitle)
+
   useEffect(() => {
     if (!ui.sid || !stdout) {
       return

ui-tui/src/components/messageLine.tsx

@@ -28,12 +28,18 @@ export const MessageLine = memo(function MessageLine({
   }
 
   if (msg.role === 'tool') {
+    const preview = compactPreview(hasAnsi(msg.text) ? stripAnsi(msg.text) : msg.text, Math.max(24, cols - 14)) ||
+      '(empty tool result)'
+
     return (
       <Box alignSelf="flex-start" borderColor={t.color.dim} borderStyle="round" marginLeft={3} paddingX={1}>
-        <Text color={t.color.dim} wrap="truncate-end">
-          {compactPreview(hasAnsi(msg.text) ? stripAnsi(msg.text) : msg.text, Math.max(24, cols - 14)) ||
-            '(empty tool result)'}
-        </Text>
+        {hasAnsi(msg.text) ? (
+          <Ansi>{compactPreview(msg.text, Math.max(24, cols - 14)) || '(empty tool result)'}</Ansi>
+        ) : (
+          <Text color={t.color.dim} wrap="truncate-end">
+            {preview}
+          </Text>
+        )}
       </Box>
     )
   }

ui-tui/src/gatewayTypes.ts

@@ -47,6 +47,7 @@ export type CommandDispatchResponse =
   | { output?: string; type: 'exec' | 'plugin' }
   | { target: string; type: 'alias' }
   | { message?: string; name: string; type: 'skill' }
+  | { message: string; type: 'send' }
 
 // ── Config ───────────────────────────────────────────────────────────
 

ui-tui/src/lib/rpc.ts

@@ -26,6 +26,10 @@ export const asCommandDispatch = (value: unknown): CommandDispatchResponse | nul
     return { type: 'skill', name: o.name, message: typeof o.message === 'string' ? o.message : undefined }
   }
 
+  if (t === 'send' && typeof o.message === 'string') {
+    return { type: 'send', message: o.message }
+  }
+
   return null
 }
 

ui-tui/src/types/hermes-ink.d.ts

@@ -93,6 +93,7 @@ declare module '@hermes/ink' {
   export function useHasSelection(): boolean
   export function useStdout(): { readonly stdout?: NodeJS.WriteStream }
   export function useTerminalFocus(): boolean
+  export function useTerminalTitle(title: string | null): void
   export function useDeclaredCursor(args: {
     readonly line: number
     readonly column: number