fix(tui): delegate unknown /tools subcommand to slash.exec

/tools' local handler silently returned for anything other than enable
or disable, so /tools list and friends looked broken even though the
Python CLI already implements them (hermes_cli/main.py registers
tools_sub for list/enable/disable).

Keep the client-owned enable/disable path (which has to run
session.setSessionStartedAt + resetVisibleHistory locally) and route
every other sub through slash.exec, matching createSlashHandler's
page/sys split for long vs short output.

ui-tui/src/app/slash/commands/core.ts

@@ -240,22 +240,28 @@ export const coreCommands: SlashCommand[] = [
         return ctx.transcript.sys('usage: /terminal-setup [auto|vscode|cursor|windsurf]')
       }
 
-      const runner = !target || target === 'auto' ? configureDetectedTerminalKeybindings() : configureTerminalKeybindings(target as 'cursor' | 'vscode' | 'windsurf')
+      const runner =
+        !target || target === 'auto'
+          ? configureDetectedTerminalKeybindings()
+          : configureTerminalKeybindings(target as 'cursor' | 'vscode' | 'windsurf')
 
-      void runner.then(result => {
-        if (ctx.stale()) {
-          return
-        }
+      void runner
+        .then(result => {
+          if (ctx.stale()) {
+            return
+          }
 
-        ctx.transcript.sys(result.message)
-        if (result.success && result.requiresRestart) {
-          ctx.transcript.sys('restart the IDE terminal for the new keybindings to take effect')
-        }
-      }).catch(error => {
-        if (!ctx.stale()) {
-          ctx.transcript.sys(`terminal setup failed: ${String(error)}`)
-        }
-      })
+          ctx.transcript.sys(result.message)
+
+          if (result.success && result.requiresRestart) {
+            ctx.transcript.sys('restart the IDE terminal for the new keybindings to take effect')
+          }
+        })
+        .catch(error => {
+          if (!ctx.stale()) {
+            ctx.transcript.sys(`terminal setup failed: ${String(error)}`)
+          }
+        })
     }
   },
 

ui-tui/src/app/slash/commands/ops.ts

@@ -1,4 +1,4 @@
-import type { ToolsConfigureResponse } from '../../../gatewayTypes.js'
+import type { SlashExecResponse, ToolsConfigureResponse } from '../../../gatewayTypes.js'
 import type { PanelSection } from '../../../types.js'
 import { patchOverlayState } from '../../overlayStore.js'
 import type { SlashCommand } from '../types.js'
@@ -207,10 +207,25 @@ export const opsCommands: SlashCommand[] = [
   {
     help: 'enable or disable tools (client-side history reset on change)',
     name: 'tools',
-    run: (arg, ctx) => {
+    run: (arg, ctx, cmd) => {
       const [subcommand, ...names] = arg.trim().split(/\s+/).filter(Boolean)
 
       if (subcommand !== 'disable' && subcommand !== 'enable') {
+        ctx.gateway.gw
+          .request<SlashExecResponse>('slash.exec', { command: cmd.slice(1), session_id: ctx.sid })
+          .then(r => {
+            if (ctx.stale()) {
+              return
+            }
+
+            const body = r?.output || '/tools: no output'
+            const text = r?.warning ? `warning: ${r.warning}\n${body}` : body
+            const long = text.length > 180 || text.split('\n').filter(Boolean).length > 2
+
+            long ? ctx.transcript.page(text, 'Tools') : ctx.transcript.sys(text)
+          })
+          .catch(ctx.guardedErr)
+
         return
       }
 

ui-tui/src/app/slash/commands/session.ts

@@ -1,4 +1,4 @@
-import { introMsg, toTranscriptMessages, attachedImageNotice } from '../../../domain/messages.js'
+import { attachedImageNotice, introMsg, toTranscriptMessages } from '../../../domain/messages.js'
 import type {
   BackgroundStartResponse,
   BtwStartResponse,