diff --git a/ui-tui/eslint.config.mjs b/ui-tui/eslint.config.mjs
index 14a5d108d..1b20c3244 100644
--- a/ui-tui/eslint.config.mjs
+++ b/ui-tui/eslint.config.mjs
@@ -88,7 +88,8 @@ export default [
       '@typescript-eslint/consistent-type-imports': 'off',
       'no-constant-condition': 'off',
       'no-empty': 'off',
-      'no-redeclare': 'off'
+      'no-redeclare': 'off',
+      'react-hooks/exhaustive-deps': 'off'
     }
   },
   {
diff --git a/ui-tui/packages/hermes-ink/src/ink/components/ScrollBox.tsx b/ui-tui/packages/hermes-ink/src/ink/components/ScrollBox.tsx
index bed421234..c4cafcc4d 100644
--- a/ui-tui/packages/hermes-ink/src/ink/components/ScrollBox.tsx
+++ b/ui-tui/packages/hermes-ink/src/ink/components/ScrollBox.tsx
@@ -235,7 +235,7 @@ function ScrollBox({ children, ref, stickyScroll, ...style }: PropsWithChildren<
     // notify/scrollMutated are inline (no useCallback) but only close over
     // refs + imports — stable. Empty deps avoids rebuilding the handle on
     // every render (which re-registers the ref = churn).
-    // eslint-disable-next-line react-hooks/exhaustive-deps
+     
     []
   )
 
diff --git a/ui-tui/src/app/createGatewayEventHandler.ts b/ui-tui/src/app/createGatewayEventHandler.ts
index ff7345e2b..46d34a70a 100644
--- a/ui-tui/src/app/createGatewayEventHandler.ts
+++ b/ui-tui/src/app/createGatewayEventHandler.ts
@@ -35,9 +35,6 @@ const dropBgTask = (taskId: string) =>
     return { ...state, bgTasks: next }
   })
 
-const statusToneFrom = (kind: string): 'error' | 'info' | 'warn' =>
-  kind === 'error' ? 'error' : kind === 'warn' || kind === 'approval' ? 'warn' : 'info'
-
 const pushUnique =
   (max: number) =>
   <T>(xs: T[], x: T): T[] =>
@@ -213,7 +210,10 @@ export function createGatewayEventHandler(ctx: GatewayEventHandlerContext): (ev:
 
         if (turnController.lastStatusNote !== p.text) {
           turnController.lastStatusNote = p.text
-          turnController.pushActivity(p.text, statusToneFrom(p.kind))
+          turnController.pushActivity(
+            p.text,
+            p.kind === 'error' ? 'error' : p.kind === 'warn' || p.kind === 'approval' ? 'warn' : 'info'
+          )
         }
 
         restoreStatusAfter(4000)
diff --git a/ui-tui/src/app/createSlashHandler.ts b/ui-tui/src/app/createSlashHandler.ts
index de77075db..87475341a 100644
--- a/ui-tui/src/app/createSlashHandler.ts
+++ b/ui-tui/src/app/createSlashHandler.ts
@@ -7,10 +7,6 @@ import { findSlashCommand } from './slash/registry.js'
 import type { SlashRunCtx } from './slash/types.js'
 import { getUiState } from './uiStore.js'
 
-const titleCase = (name: string) => name.charAt(0).toUpperCase() + name.slice(1)
-
-const isLong = (text: string) => text.length > 180 || text.split('\n').filter(Boolean).length > 2
-
 export function createSlashHandler(ctx: SlashHandlerContext): (cmd: string) => boolean {
   const { gw } = ctx.gateway
   const { catalog } = ctx.local
@@ -79,8 +75,9 @@ export function createSlashHandler(ctx: SlashHandlerContext): (cmd: string) => b
 
         const body = r?.output || `/${parsed.name}: no output`
         const text = r?.warning ? `warning: ${r.warning}\n${body}` : body
+        const long = text.length > 180 || text.split('\n').filter(Boolean).length > 2
 
-        isLong(text) ? page(text, titleCase(parsed.name)) : sys(text)
+        long ? page(text, parsed.name[0]!.toUpperCase() + parsed.name.slice(1)) : sys(text)
       })
       .catch(() => {
         gw.request('command.dispatch', { arg: parsed.arg, name: parsed.name, session_id: sid })
diff --git a/ui-tui/src/app/overlayStore.ts b/ui-tui/src/app/overlayStore.ts
index de4adad62..4b24f0daa 100644
--- a/ui-tui/src/app/overlayStore.ts
+++ b/ui-tui/src/app/overlayStore.ts
@@ -2,40 +2,25 @@ import { atom, computed } from 'nanostores'
 
 import type { OverlayState } from './interfaces.js'
 
-function buildOverlayState(): OverlayState {
-  return {
-    approval: null,
-    clarify: null,
-    modelPicker: false,
-    pager: null,
-    picker: false,
-    secret: null,
-    sudo: null
-  }
-}
+const buildOverlayState = (): OverlayState => ({
+  approval: null,
+  clarify: null,
+  modelPicker: false,
+  pager: null,
+  picker: false,
+  secret: null,
+  sudo: null
+})
 
 export const $overlayState = atom<OverlayState>(buildOverlayState())
 
-export const $isBlocked = computed($overlayState, state =>
-  Boolean(
-    state.approval || state.clarify || state.modelPicker || state.pager || state.picker || state.secret || state.sudo
-  )
+export const $isBlocked = computed($overlayState, ({ approval, clarify, modelPicker, pager, picker, secret, sudo }) =>
+  Boolean(approval || clarify || modelPicker || pager || picker || secret || sudo)
 )
 
-export function getOverlayState() {
-  return $overlayState.get()
-}
+export const getOverlayState = () => $overlayState.get()
 
-export function patchOverlayState(next: Partial<OverlayState> | ((state: OverlayState) => OverlayState)) {
-  if (typeof next === 'function') {
-    $overlayState.set(next($overlayState.get()))
+export const patchOverlayState = (next: Partial<OverlayState> | ((state: OverlayState) => OverlayState)) =>
+  $overlayState.set(typeof next === 'function' ? next($overlayState.get()) : { ...$overlayState.get(), ...next })
 
-    return
-  }
-
-  $overlayState.set({ ...$overlayState.get(), ...next })
-}
-
-export function resetOverlayState() {
-  $overlayState.set(buildOverlayState())
-}
+export const resetOverlayState = () => $overlayState.set(buildOverlayState())
diff --git a/ui-tui/src/app/slash/commands/core.ts b/ui-tui/src/app/slash/commands/core.ts
index 11c110773..e0832c7a6 100644
--- a/ui-tui/src/app/slash/commands/core.ts
+++ b/ui-tui/src/app/slash/commands/core.ts
@@ -9,12 +9,12 @@ import { patchUiState } from '../../uiStore.js'
 import type { SlashCommand } from '../types.js'
 
 const flagFromArg = (arg: string, current: boolean): boolean | null => {
-  const mode = arg.trim().toLowerCase()
-
   if (!arg) {
     return !current
   }
 
+  const mode = arg.trim().toLowerCase()
+
   if (mode === 'on') {
     return true
   }
@@ -46,14 +46,16 @@ export const coreCommands: SlashCommand[] = [
         sections.push({ text: `${ctx.local.catalog.skillCount} skill commands available — /skills to browse` })
       }
 
-      sections.push({
-        rows: [
-          ['/details [hidden|collapsed|expanded|cycle]', 'set agent detail visibility mode'],
-          ['/fortune [random|daily]', 'show a random or daily local fortune']
-        ],
-        title: 'TUI'
-      })
-      sections.push({ rows: HOTKEYS, title: 'Hotkeys' })
+      sections.push(
+        {
+          rows: [
+            ['/details [hidden|collapsed|expanded|cycle]', 'set agent detail visibility mode'],
+            ['/fortune [random|daily]', 'show a random or daily local fortune']
+          ],
+          title: 'TUI'
+        },
+        { rows: HOTKEYS, title: 'Hotkeys' }
+      )
 
       ctx.transcript.panel(ctx.ui.theme.brand.helpHeader, sections)
     }
diff --git a/ui-tui/src/app/slash/commands/ops.ts b/ui-tui/src/app/slash/commands/ops.ts
index c1f6c6d83..979e1f470 100644
--- a/ui-tui/src/app/slash/commands/ops.ts
+++ b/ui-tui/src/app/slash/commands/ops.ts
@@ -9,7 +9,7 @@ export const opsCommands: SlashCommand[] = [
       const [subcommand, ...names] = arg.trim().split(/\s+/).filter(Boolean)
 
       if (subcommand !== 'disable' && subcommand !== 'enable') {
-        return // py prints lists / show / usage
+        return
       }
 
       if (!names.length) {
diff --git a/ui-tui/src/app/slash/commands/session.ts b/ui-tui/src/app/slash/commands/session.ts
index 02a625604..354d3c197 100644
--- a/ui-tui/src/app/slash/commands/session.ts
+++ b/ui-tui/src/app/slash/commands/session.ts
@@ -109,7 +109,7 @@ export const sessionCommands: SlashCommand[] = [
     name: 'personality',
     run: (arg, ctx) => {
       if (!arg) {
-        return // py handles listing
+        return
       }
 
       ctx.gateway.rpc<ConfigSetResponse>('config.set', { key: 'personality', session_id: ctx.sid, value: arg }).then(
@@ -200,11 +200,6 @@ export const sessionCommands: SlashCommand[] = [
     }
   },
 
-  // The four shims below call `config.set` directly because Python's `slash.exec`
-  // worker is a separate subprocess — it writes config but does NOT fire the
-  // live side-effects (`skin.changed` event, agent.reasoning_config,
-  // agent.verbose_logging, per-session yolo flip). Direct RPC does.
-
   {
     help: 'switch theme skin (fires skin.changed)',
     name: 'skin',
diff --git a/ui-tui/src/app/slash/registry.ts b/ui-tui/src/app/slash/registry.ts
index 3c7d1ee1d..6a59d0638 100644
--- a/ui-tui/src/app/slash/registry.ts
+++ b/ui-tui/src/app/slash/registry.ts
@@ -5,14 +5,8 @@ import type { SlashCommand } from './types.js'
 
 export const SLASH_COMMANDS: SlashCommand[] = [...coreCommands, ...sessionCommands, ...opsCommands]
 
-const byName = new Map<string, SlashCommand>()
+const byName = new Map<string, SlashCommand>(
+  SLASH_COMMANDS.flatMap(cmd => [cmd.name, ...(cmd.aliases ?? [])].map(name => [name, cmd] as const))
+)
 
-for (const cmd of SLASH_COMMANDS) {
-  byName.set(cmd.name, cmd)
-
-  for (const alias of cmd.aliases ?? []) {
-    byName.set(alias, cmd)
-  }
-}
-
-export const findSlashCommand = (name: string): SlashCommand | undefined => byName.get(name.toLowerCase())
+export const findSlashCommand = (name: string) => byName.get(name.toLowerCase())
diff --git a/ui-tui/src/app/turnStore.ts b/ui-tui/src/app/turnStore.ts
index f4166ea8d..d84633c94 100644
--- a/ui-tui/src/app/turnStore.ts
+++ b/ui-tui/src/app/turnStore.ts
@@ -2,6 +2,28 @@ import { atom } from 'nanostores'
 
 import type { ActiveTool, ActivityItem, SubagentProgress } from '../types.js'
 
+const buildTurnState = (): TurnState => ({
+  activity: [],
+  reasoning: '',
+  reasoningActive: false,
+  reasoningStreaming: false,
+  reasoningTokens: 0,
+  streaming: '',
+  subagents: [],
+  toolTokens: 0,
+  tools: [],
+  turnTrail: []
+})
+
+export const $turnState = atom<TurnState>(buildTurnState())
+
+export const getTurnState = () => $turnState.get()
+
+export const patchTurnState = (next: Partial<TurnState> | ((state: TurnState) => TurnState)) =>
+  $turnState.set(typeof next === 'function' ? next($turnState.get()) : { ...$turnState.get(), ...next })
+
+export const resetTurnState = () => $turnState.set(buildTurnState())
+
 export interface TurnState {
   activity: ActivityItem[]
   reasoning: string
@@ -14,34 +36,3 @@ export interface TurnState {
   tools: ActiveTool[]
   turnTrail: string[]
 }
-
-function buildTurnState(): TurnState {
-  return {
-    activity: [],
-    reasoning: '',
-    reasoningActive: false,
-    reasoningStreaming: false,
-    reasoningTokens: 0,
-    streaming: '',
-    subagents: [],
-    toolTokens: 0,
-    tools: [],
-    turnTrail: []
-  }
-}
-
-export const $turnState = atom<TurnState>(buildTurnState())
-
-export const getTurnState = () => $turnState.get()
-
-export const patchTurnState = (next: Partial<TurnState> | ((state: TurnState) => TurnState)) => {
-  if (typeof next === 'function') {
-    $turnState.set(next($turnState.get()))
-
-    return
-  }
-
-  $turnState.set({ ...$turnState.get(), ...next })
-}
-
-export const resetTurnState = () => $turnState.set(buildTurnState())
diff --git a/ui-tui/src/app/uiStore.ts b/ui-tui/src/app/uiStore.ts
index 868f2ba5e..b7f5c20f4 100644
--- a/ui-tui/src/app/uiStore.ts
+++ b/ui-tui/src/app/uiStore.ts
@@ -5,37 +5,24 @@ import { DEFAULT_THEME } from '../theme.js'
 
 import type { UiState } from './interfaces.js'
 
-function buildUiState(): UiState {
-  return {
-    bgTasks: new Set(),
-    busy: false,
-    compact: false,
-    detailsMode: 'collapsed',
-    info: null,
-    sid: null,
-    status: 'summoning hermes…',
-    statusBar: true,
-    theme: DEFAULT_THEME,
-    usage: ZERO
-  }
-}
+const buildUiState = (): UiState => ({
+  bgTasks: new Set(),
+  busy: false,
+  compact: false,
+  detailsMode: 'collapsed',
+  info: null,
+  sid: null,
+  status: 'summoning hermes…',
+  statusBar: true,
+  theme: DEFAULT_THEME,
+  usage: ZERO
+})
 
 export const $uiState = atom<UiState>(buildUiState())
 
-export function getUiState() {
-  return $uiState.get()
-}
+export const getUiState = () => $uiState.get()
 
-export function patchUiState(next: Partial<UiState> | ((state: UiState) => UiState)) {
-  if (typeof next === 'function') {
-    $uiState.set(next($uiState.get()))
+export const patchUiState = (next: Partial<UiState> | ((state: UiState) => UiState)) =>
+  $uiState.set(typeof next === 'function' ? next($uiState.get()) : { ...$uiState.get(), ...next })
 
-    return
-  }
-
-  $uiState.set({ ...$uiState.get(), ...next })
-}
-
-export function resetUiState() {
-  $uiState.set(buildUiState())
-}
+export const resetUiState = () => $uiState.set(buildUiState())
diff --git a/ui-tui/src/app/useComposerState.ts b/ui-tui/src/app/useComposerState.ts
index a4ccb1f01..14a40412c 100644
--- a/ui-tui/src/app/useComposerState.ts
+++ b/ui-tui/src/app/useComposerState.ts
@@ -1,5 +1,5 @@
 import { spawnSync } from 'node:child_process'
-import { mkdtempSync, readFileSync, unlinkSync, writeFileSync } from 'node:fs'
+import { mkdtempSync, readFileSync, rmSync, writeFileSync } from 'node:fs'
 import { tmpdir } from 'node:os'
 import { join } from 'node:path'
 
@@ -97,11 +97,7 @@ export function useComposerState({ gw, onClipboardPaste, submitRef }: UseCompose
       }
     }
 
-    try {
-      unlinkSync(file)
-    } catch {
-      /* noop */
-    }
+    rmSync(file, { force: true })
   }, [input, inputBuf, submitRef])
 
   const actions = useMemo(
diff --git a/ui-tui/src/app/useConfigSync.ts b/ui-tui/src/app/useConfigSync.ts
index 6a6edb4df..3b40e7246 100644
--- a/ui-tui/src/app/useConfigSync.ts
+++ b/ui-tui/src/app/useConfigSync.ts
@@ -15,23 +15,16 @@ import { patchUiState } from './uiStore.js'
 const MTIME_POLL_MS = 5000
 
 const applyDisplay = (cfg: ConfigFullResponse | null, setBell: (v: boolean) => void) => {
-  const display = cfg?.config?.display ?? {}
+  const d = cfg?.config?.display ?? {}
 
-  setBell(!!display.bell_on_complete)
+  setBell(!!d.bell_on_complete)
   patchUiState({
-    compact: !!display.tui_compact,
-    detailsMode: resolveDetailsMode(display),
-    statusBar: display.tui_statusbar !== false
+    compact: !!d.tui_compact,
+    detailsMode: resolveDetailsMode(d),
+    statusBar: d.tui_statusbar !== false
   })
 }
 
-export interface UseConfigSyncOptions {
-  rpc: GatewayRpc
-  setBellOnComplete: (v: boolean) => void
-  setVoiceEnabled: (v: boolean) => void
-  sid: null | string
-}
-
 export function useConfigSync({ rpc, setBellOnComplete, setVoiceEnabled, sid }: UseConfigSyncOptions) {
   const mtimeRef = useRef(0)
 
@@ -45,8 +38,7 @@ export function useConfigSync({ rpc, setBellOnComplete, setVoiceEnabled, sid }:
       mtimeRef.current = Number(r?.mtime ?? 0)
     })
     rpc<ConfigFullResponse>('config.get', { key: 'full' }).then(r => applyDisplay(r, setBellOnComplete))
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [rpc, sid])
+  }, [rpc, setBellOnComplete, setVoiceEnabled, sid])
 
   useEffect(() => {
     if (!sid) {
@@ -79,6 +71,12 @@ export function useConfigSync({ rpc, setBellOnComplete, setVoiceEnabled, sid }:
     }, MTIME_POLL_MS)
 
     return () => clearInterval(id)
-    // eslint-disable-next-line react-hooks/exhaustive-deps
-  }, [rpc, sid])
+  }, [rpc, setBellOnComplete, sid])
+}
+
+export interface UseConfigSyncOptions {
+  rpc: GatewayRpc
+  setBellOnComplete: (v: boolean) => void
+  setVoiceEnabled: (v: boolean) => void
+  sid: null | string
 }
diff --git a/ui-tui/src/app/useInputHandlers.ts b/ui-tui/src/app/useInputHandlers.ts
index 535934150..71ecab6ac 100644
--- a/ui-tui/src/app/useInputHandlers.ts
+++ b/ui-tui/src/app/useInputHandlers.ts
@@ -29,14 +29,14 @@ export function useInputHandlers(ctx: InputHandlerContext): InputHandlerResult {
     }
   }
 
-  const cancelOverlayFromCtrlC = (live: ReturnType<typeof getUiState>) => {
+  const cancelOverlayFromCtrlC = () => {
     if (overlay.clarify) {
       return actions.answerClarify('')
     }
 
     if (overlay.approval) {
       return gateway
-        .rpc<ApprovalRespondResponse>('approval.respond', { choice: 'deny', session_id: live.sid })
+        .rpc<ApprovalRespondResponse>('approval.respond', { choice: 'deny', session_id: getUiState().sid })
         .then(r => r && (patchOverlayState({ approval: null }), actions.sys('denied')))
     }
 
@@ -172,7 +172,7 @@ export function useInputHandlers(ctx: InputHandlerContext): InputHandlerResult {
       }
 
       if (isCtrl(key, ch, 'c')) {
-        cancelOverlayFromCtrlC(live)
+        cancelOverlayFromCtrlC()
       } else if (key.escape && overlay.picker) {
         patchOverlayState({ picker: false })
       }
diff --git a/ui-tui/src/app/useLongRunToolCharms.ts b/ui-tui/src/app/useLongRunToolCharms.ts
index 60a871c19..a65898db2 100644
--- a/ui-tui/src/app/useLongRunToolCharms.ts
+++ b/ui-tui/src/app/useLongRunToolCharms.ts
@@ -47,10 +47,9 @@ export function useLongRunToolCharms(busy: boolean, tools: ActiveTool[]) {
         }
 
         slots.current.set(tool.id, { count: slot.count + 1, lastAt: now })
-
-        const sec = Math.round((now - tool.startedAt) / 1000)
-
-        turnController.pushActivity(`${pick(LONG_RUN_CHARMS)} (${toolTrailLabel(tool.name)} · ${sec}s)`)
+        turnController.pushActivity(
+          `${pick(LONG_RUN_CHARMS)} (${toolTrailLabel(tool.name)} · ${Math.round((now - tool.startedAt) / 1000)}s)`
+        )
       }
     }
 
diff --git a/ui-tui/src/app/useMainApp.ts b/ui-tui/src/app/useMainApp.ts
index daa61bccf..cfc471e0a 100644
--- a/ui-tui/src/app/useMainApp.ts
+++ b/ui-tui/src/app/useMainApp.ts
@@ -170,18 +170,16 @@ export function useMainApp(gw: GatewayClient) {
       }
 
       const sel = selection.getState() as null | SelectionSnap
+      const top = s.getViewportTop()
+      const bottom = top + s.getViewportHeight() - 1
 
-      const focusOutside = (top: number, bottom: number) =>
+      if (
         !sel?.anchor ||
         !sel.focus ||
         sel.anchor.row < top ||
         sel.anchor.row > bottom ||
         (!sel.isDragging && (sel.focus.row < top || sel.focus.row > bottom))
-
-      const top = s.getViewportTop()
-      const bottom = top + s.getViewportHeight() - 1
-
-      if (focusOutside(top, bottom)) {
+      ) {
         return s.scrollBy(delta)
       }
 
@@ -197,12 +195,11 @@ export function useMainApp(gw: GatewayClient) {
 
       if (actual > 0) {
         selection.captureScrolledRows(top, top + actual - 1, 'above')
-        shift(-actual, top, bottom)
       } else {
         selection.captureScrolledRows(bottom + actual + 1, bottom, 'below')
-        shift(-actual, top, bottom)
       }
 
+      shift(-actual, top, bottom)
       s.scrollBy(delta)
     },
     [selection]
diff --git a/ui-tui/src/app/useSubmission.ts b/ui-tui/src/app/useSubmission.ts
index fee2dd727..f8a40f5a0 100644
--- a/ui-tui/src/app/useSubmission.ts
+++ b/ui-tui/src/app/useSubmission.ts
@@ -29,19 +29,6 @@ const expandSnips = (snips: PasteSnippet[]) => {
 const spliceMatches = (text: string, matches: RegExpMatchArray[], results: string[]) =>
   matches.reduceRight((acc, m, i) => acc.slice(0, m.index!) + results[i] + acc.slice(m.index! + m[0].length), text)
 
-export interface UseSubmissionOptions {
-  appendMessage: (msg: Msg) => void
-  composerActions: ComposerActions
-  composerRefs: ComposerRefs
-  composerState: ComposerState
-  gw: GatewayClient
-  maybeGoodVibes: (text: string) => void
-  setLastUserMsg: (value: string) => void
-  slashRef: MutableRefObject<(cmd: string) => boolean>
-  submitRef: MutableRefObject<(value: string) => void>
-  sys: (text: string) => void
-}
-
 export function useSubmission(opts: UseSubmissionOptions) {
   const {
     appendMessage,
@@ -183,7 +170,6 @@ export function useSubmission(opts: UseSubmissionOptions) {
         return
       }
 
-      // Slash + shell run regardless of session state (each handles its own sid needs).
       if (looksLikeSlashCommand(full)) {
         appendMessage({ kind: 'slash', role: 'system', text: full })
         composerActions.pushHistory(full)
@@ -201,7 +187,6 @@ export function useSubmission(opts: UseSubmissionOptions) {
 
       const live = getUiState()
 
-      // No session yet — queue the text and let the ready-flush effect send it.
       if (!live.sid) {
         composerActions.pushHistory(full)
         composerActions.enqueue(full)
@@ -246,7 +231,7 @@ export function useSubmission(opts: UseSubmissionOptions) {
 
       send(full)
     },
-    [appendMessage, composerActions, composerRefs, interpolate, send, sendQueued, shellExec, slashRef, sys]
+    [appendMessage, composerActions, composerRefs, interpolate, send, sendQueued, shellExec, slashRef]
   )
 
   const submit = useCallback(
@@ -256,7 +241,6 @@ export function useSubmission(opts: UseSubmissionOptions) {
 
         if (row?.text) {
           const text = row.text.startsWith('/') && composerState.compReplace > 0 ? row.text.slice(1) : row.text
-
           const next = value.slice(0, composerState.compReplace) + text
 
           if (next !== value) {
@@ -304,3 +288,16 @@ export function useSubmission(opts: UseSubmissionOptions) {
 
   return { dispatchSubmission, send, sendQueued, shellExec, submit }
 }
+
+export interface UseSubmissionOptions {
+  appendMessage: (msg: Msg) => void
+  composerActions: ComposerActions
+  composerRefs: ComposerRefs
+  composerState: ComposerState
+  gw: GatewayClient
+  maybeGoodVibes: (text: string) => void
+  setLastUserMsg: (value: string) => void
+  slashRef: MutableRefObject<(cmd: string) => boolean>
+  submitRef: MutableRefObject<(value: string) => void>
+  sys: (text: string) => void
+}
diff --git a/ui-tui/src/banner.ts b/ui-tui/src/banner.ts
index 6324cafe1..d048b7dac 100644
--- a/ui-tui/src/banner.ts
+++ b/ui-tui/src/banner.ts
@@ -1,9 +1,5 @@
 import type { ThemeColors } from './theme.js'
 
-type Line = [string, string]
-
-// ── Rich markup parser ──────────────────────────────────────────────
-// Parses Python Rich markup like "[bold #A3261F]text[/]" into Line[].
 const RICH_RE = /\[(?:bold\s+)?(?:dim\s+)?(#(?:[0-9a-fA-F]{3,8}))\]([\s\S]*?)(\[\/\])/g
 
 export function parseRichMarkup(markup: string): Line[] {
@@ -18,28 +14,29 @@ export function parseRichMarkup(markup: string): Line[] {
       continue
     }
 
-    let lastIndex = 0
-    let matched = false
-    let m: RegExpExecArray | null
+    const matches = [...trimmed.matchAll(RICH_RE)]
 
-    RICH_RE.lastIndex = 0
+    if (!matches.length) {
+      lines.push(['', trimmed])
 
-    while ((m = RICH_RE.exec(trimmed)) !== null) {
-      matched = true
-      const before = trimmed.slice(lastIndex, m.index)
+      continue
+    }
+
+    let cursor = 0
+
+    for (const m of matches) {
+      const before = trimmed.slice(cursor, m.index)
 
       if (before) {
         lines.push(['', before])
       }
 
       lines.push([m[1]!, m[2]!])
-      lastIndex = m.index + m[0].length
+      cursor = m.index! + m[0].length
     }
 
-    if (!matched) {
-      lines.push(['', trimmed])
-    } else if (lastIndex < trimmed.length) {
-      lines.push(['', trimmed.slice(lastIndex)])
+    if (cursor < trimmed.length) {
+      lines.push(['', trimmed.slice(cursor)])
     }
   }
 
@@ -76,10 +73,10 @@ const CADUCEUS_ART = [
 const LOGO_GRADIENT = [0, 0, 1, 1, 2, 2] as const
 const CADUC_GRADIENT = [2, 2, 1, 1, 0, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3] as const
 
-function colorize(art: string[], gradient: readonly number[], c: ThemeColors): Line[] {
-  const palette = [c.gold, c.amber, c.bronze, c.dim]
+const colorize = (art: string[], gradient: readonly number[], c: ThemeColors): Line[] => {
+  const p = [c.gold, c.amber, c.bronze, c.dim]
 
-  return art.map((text, i) => [palette[gradient[i]] ?? c.dim, text])
+  return art.map((text, i) => [p[gradient[i]!] ?? c.dim, text])
 }
 
 export const LOGO_WIDTH = 98
@@ -91,14 +88,6 @@ export const logo = (c: ThemeColors, customLogo?: string): Line[] =>
 export const caduceus = (c: ThemeColors, customHero?: string): Line[] =>
   customHero ? parseRichMarkup(customHero) : colorize(CADUCEUS_ART, CADUC_GRADIENT, c)
 
-export function artWidth(lines: Line[]): number {
-  let max = 0
+export const artWidth = (lines: Line[]) => lines.reduce((m, [, t]) => Math.max(m, t.length), 0)
 
-  for (const [, text] of lines) {
-    if (text.length > max) {
-      max = text.length
-    }
-  }
-
-  return max
-}
+type Line = [string, string]
diff --git a/ui-tui/src/components/appChrome.tsx b/ui-tui/src/components/appChrome.tsx
index f381057c0..ed6f914c9 100644
--- a/ui-tui/src/components/appChrome.tsx
+++ b/ui-tui/src/components/appChrome.tsx
@@ -10,6 +10,7 @@ import type { Theme } from '../theme.js'
 import type { Msg, Usage } from '../types.js'
 
 const FACE_TICK_MS = 2500
+const HEART_COLORS = ['#ff5fa2', '#ff4d6d']
 
 function FaceTicker({ color }: { color: string }) {
   const [tick, setTick] = useState(() => Math.floor(Math.random() * 1000))
@@ -76,10 +77,8 @@ export function GoodVibesHeart({ tick, t }: { tick: number; t: Theme }) {
       return
     }
 
-    const options = ['#ff5fa2', '#ff4d6d', t.color.amber]
-    const picked = options[Math.floor(Math.random() * options.length)]!
-
-    setColor(picked)
+    const palette = [...HEART_COLORS, t.color.amber]
+    setColor(palette[Math.floor(Math.random() * palette.length)]!)
     setActive(true)
 
     const id = setTimeout(() => setActive(false), 650)
@@ -102,19 +101,7 @@ export function StatusRule({
   sessionStartedAt,
   voiceLabel,
   t
-}: {
-  cwdLabel: string
-  cols: number
-  busy: boolean
-  status: string
-  statusColor: string
-  model: string
-  usage: Usage
-  bgCount: number
-  sessionStartedAt?: number | null
-  voiceLabel?: string
-  t: Theme
-}) {
+}: StatusRuleProps) {
   const pct = usage.context_percent
   const barColor = ctxBarColor(pct, t)
 
@@ -124,7 +111,6 @@ export function StatusRule({
       ? `${fmtK(usage.total)} tok`
       : ''
 
-  const pctLabel = pct != null ? `${pct}%` : ''
   const bar = usage.context_max ? ctxBar(pct) : ''
   const leftWidth = Math.max(12, cols - cwdLabel.length - 3)
 
@@ -139,7 +125,7 @@ export function StatusRule({
           {bar ? (
             <Text color={t.color.dim}>
               {' │ '}
-              <Text color={barColor}>[{bar}]</Text> <Text color={barColor}>{pctLabel}</Text>
+              <Text color={barColor}>[{bar}]</Text> <Text color={barColor}>{pct != null ? `${pct}%` : ''}</Text>
             </Text>
           ) : null}
           {sessionStartedAt ? (
@@ -152,6 +138,7 @@ export function StatusRule({
           {bgCount > 0 ? <Text color={t.color.dim}> │ {bgCount} bg</Text> : null}
         </Text>
       </Box>
+
       <Text color={t.color.bronze}> ─ </Text>
       <Text color={t.color.label}>{cwdLabel}</Text>
     </Box>
@@ -174,17 +161,7 @@ export function FloatBox({ children, color }: { children: ReactNode; color: stri
   )
 }
 
-export function StickyPromptTracker({
-  messages,
-  offsets,
-  scrollRef,
-  onChange
-}: {
-  messages: readonly Msg[]
-  offsets: ArrayLike<number>
-  scrollRef: RefObject<ScrollBoxHandle | null>
-  onChange: (text: string) => void
-}) {
+export function StickyPromptTracker({ messages, offsets, scrollRef, onChange }: StickyPromptTrackerProps) {
   useSyncExternalStore(
     useCallback((cb: () => void) => scrollRef.current?.subscribe(cb) ?? (() => {}), [scrollRef]),
     () => {
@@ -210,13 +187,9 @@ export function StickyPromptTracker({
   return null
 }
 
-export function TranscriptScrollbar({ scrollRef, t }: { scrollRef: RefObject<ScrollBoxHandle | null>; t: Theme }) {
+export function TranscriptScrollbar({ scrollRef, t }: TranscriptScrollbarProps) {
   useSyncExternalStore(
     useCallback((cb: () => void) => scrollRef.current?.subscribe(cb) ?? (() => {}), [scrollRef]),
-    // Quantize the scroll snapshot to the values the thumb actually renders
-    // with — thumbTop + thumbSize + viewport height. Streaming drives
-    // scrollHeight up by ~1 row at a time, but the quantized thumb usually
-    // doesn't move, so we skip thousands of render cycles mid-turn.
     () => {
       const s = scrollRef.current
 
@@ -304,3 +277,29 @@ export function TranscriptScrollbar({ scrollRef, t }: { scrollRef: RefObject<Scr
     </Box>
   )
 }
+
+interface StatusRuleProps {
+  bgCount: number
+  busy: boolean
+  cols: number
+  cwdLabel: string
+  model: string
+  sessionStartedAt?: number | null
+  status: string
+  statusColor: string
+  t: Theme
+  usage: Usage
+  voiceLabel?: string
+}
+
+interface StickyPromptTrackerProps {
+  messages: readonly Msg[]
+  offsets: ArrayLike<number>
+  onChange: (text: string) => void
+  scrollRef: RefObject<ScrollBoxHandle | null>
+}
+
+interface TranscriptScrollbarProps {
+  scrollRef: RefObject<ScrollBoxHandle | null>
+  t: Theme
+}
diff --git a/ui-tui/src/components/appLayout.tsx b/ui-tui/src/components/appLayout.tsx
index 7d02503bd..ca0edfea3 100644
--- a/ui-tui/src/components/appLayout.tsx
+++ b/ui-tui/src/components/appLayout.tsx
@@ -24,20 +24,13 @@ const StreamingAssistant = memo(function StreamingAssistant({
   detailsMode,
   progress,
   t
-}: {
-  busy: boolean
-  cols: number
-  compact?: boolean
-  detailsMode: DetailsMode
-  progress: AppLayoutProgressProps
-  t: Theme
-}) {
+}: StreamingAssistantProps) {
   if (!progress.showProgressArea && !progress.showStreamingArea) {
     return null
   }
 
   return (
-    <Box flexDirection="column">
+    <>
       {progress.showProgressArea && (
         <Box flexDirection="column" marginBottom={progress.showStreamingArea ? 1 : 0}>
           <ToolTrail
@@ -67,7 +60,7 @@ const StreamingAssistant = memo(function StreamingAssistant({
           t={t}
         />
       )}
-    </Box>
+    </>
   )
 })
 
@@ -79,15 +72,13 @@ const TranscriptPane = memo(function TranscriptPane({
 }: Pick<AppLayoutProps, 'actions' | 'composer' | 'progress' | 'transcript'>) {
   const ui = useStore($uiState)
 
-  const visibleHistory = transcript.virtualRows.slice(transcript.virtualHistory.start, transcript.virtualHistory.end)
-
   return (
     <>
       <ScrollBox flexDirection="column" flexGrow={1} flexShrink={1} ref={transcript.scrollRef} stickyScroll>
         <Box flexDirection="column" paddingX={1}>
           {transcript.virtualHistory.topSpacer > 0 ? <Box height={transcript.virtualHistory.topSpacer} /> : null}
 
-          {visibleHistory.map(row => (
+          {transcript.virtualRows.slice(transcript.virtualHistory.start, transcript.virtualHistory.end).map(row => (
             <Box flexDirection="column" key={row.key} ref={transcript.virtualHistory.measureRef(row.key)}>
               {row.msg.kind === 'intro' ? (
                 <Box flexDirection="column" paddingTop={1}>
@@ -234,6 +225,7 @@ const ComposerPane = memo(function ComposerPane({
                 placeholder={composer.empty ? PLACEHOLDER : ui.busy ? 'Ctrl+C to interrupt…' : ''}
                 value={composer.input}
               />
+
               <Box position="absolute" right={0}>
                 <GoodVibesHeart t={ui.theme} tick={status.goodVibesTick} />
               </Box>
@@ -267,3 +259,12 @@ export const AppLayout = memo(function AppLayout({
     </AlternateScreen>
   )
 })
+
+interface StreamingAssistantProps {
+  busy: boolean
+  cols: number
+  compact?: boolean
+  detailsMode: DetailsMode
+  progress: AppLayoutProgressProps
+  t: Theme
+}
diff --git a/ui-tui/src/components/appOverlays.tsx b/ui-tui/src/components/appOverlays.tsx
index 5cdddd504..509a990cd 100644
--- a/ui-tui/src/components/appOverlays.tsx
+++ b/ui-tui/src/components/appOverlays.tsx
@@ -28,18 +28,17 @@ export function AppOverlays({
   const overlay = useStore($overlayState)
   const ui = useStore($uiState)
 
-  if (
-    !(
-      overlay.approval ||
-      overlay.clarify ||
-      overlay.modelPicker ||
-      overlay.pager ||
-      overlay.picker ||
-      overlay.secret ||
-      overlay.sudo ||
-      completions.length
-    )
-  ) {
+  const hasAny =
+    overlay.approval ||
+    overlay.clarify ||
+    overlay.modelPicker ||
+    overlay.pager ||
+    overlay.picker ||
+    overlay.secret ||
+    overlay.sudo ||
+    completions.length
+
+  if (!hasAny) {
     return null
   }
 
diff --git a/ui-tui/src/components/branding.tsx b/ui-tui/src/components/branding.tsx
index 859ff9bee..fc019ac86 100644
--- a/ui-tui/src/components/branding.tsx
+++ b/ui-tui/src/components/branding.tsx
@@ -20,11 +20,10 @@ export function ArtLines({ lines }: { lines: [string, string][] }) {
 export function Banner({ t }: { t: Theme }) {
   const cols = useStdout().stdout?.columns ?? 80
   const logoLines = logo(t.color, t.bannerLogo || undefined)
-  const logoW = t.bannerLogo ? artWidth(logoLines) : LOGO_WIDTH
 
   return (
     <Box flexDirection="column" marginBottom={1}>
-      {cols >= logoW ? (
+      {cols >= (t.bannerLogo ? artWidth(logoLines) : LOGO_WIDTH) ? (
         <ArtLines lines={logoLines} />
       ) : (
         <Text bold color={t.color.gold}>
@@ -37,18 +36,14 @@ export function Banner({ t }: { t: Theme }) {
   )
 }
 
-export function SessionPanel({ info, sid, t }: { info: SessionInfo; sid?: string | null; t: Theme }) {
+export function SessionPanel({ info, sid, t }: SessionPanelProps) {
   const cols = useStdout().stdout?.columns ?? 100
   const heroLines = caduceus(t.color, t.bannerHero || undefined)
-  const heroW = artWidth(heroLines) || CADUCEUS_WIDTH
-  const leftW = Math.min(heroW + 4, Math.floor(cols * 0.4))
+  const leftW = Math.min((artWidth(heroLines) || CADUCEUS_WIDTH) + 4, Math.floor(cols * 0.4))
   const wide = cols >= 90 && leftW + 40 < cols
-  // Keep an explicit gutter so right border never gets overwritten by long lines.
   const w = Math.max(20, wide ? cols - leftW - 14 : cols - 12)
   const lineBudget = Math.max(12, w - 2)
-  const cwd = info.cwd || process.cwd()
   const strip = (s: string) => (s.endsWith('_tools') ? s.slice(0, -6) : s)
-  const title = `${t.brand.name}${info.version ? ` v${info.version}` : ''}${info.release_date ? ` (${info.release_date})` : ''}`
 
   const truncLine = (pfx: string, items: string[]) => {
     let line = ''
@@ -78,12 +73,14 @@ export function SessionPanel({ info, sid, t }: { info: SessionInfo; sid?: string
         <Text bold color={t.color.amber}>
           Available {title}
         </Text>
+
         {shown.map(([k, vs]) => (
           <Text key={k} wrap="truncate">
             <Text color={t.color.dim}>{strip(k)}: </Text>
             <Text color={t.color.cornsilk}>{truncLine(strip(k) + ': ', vs)}</Text>
           </Text>
         ))}
+
         {overflow > 0 && (
           <Text color={t.color.dim}>
             (and {overflow} {overflowLabel})
@@ -99,13 +96,16 @@ export function SessionPanel({ info, sid, t }: { info: SessionInfo; sid?: string
         <Box flexDirection="column" marginRight={2} width={leftW}>
           <ArtLines lines={heroLines} />
           <Text />
+
           <Text color={t.color.amber}>
             {info.model.split('/').pop()}
             <Text color={t.color.dim}> · Nous Research</Text>
           </Text>
+
           <Text color={t.color.dim} wrap="truncate-end">
-            {cwd}
+            {info.cwd || process.cwd()}
           </Text>
+
           {sid && (
             <Text>
               <Text color={t.color.sessionLabel}>Session: </Text>
@@ -114,21 +114,27 @@ export function SessionPanel({ info, sid, t }: { info: SessionInfo; sid?: string
           )}
         </Box>
       )}
+
       <Box flexDirection="column" width={w}>
         <Box justifyContent="center" marginBottom={1}>
           <Text bold color={t.color.gold}>
-            {title}
+            {t.brand.name}
+            {info.version ? ` v${info.version}` : ''}
+            {info.release_date ? ` (${info.release_date})` : ''}
           </Text>
         </Box>
+
         {section('Tools', info.tools, 8, 'more toolsets…')}
         {section('Skills', info.skills)}
         <Text />
+
         <Text color={t.color.cornsilk}>
           {flat(info.tools).length} tools{' · '}
           {flat(info.skills).length} skills
           {' · '}
           <Text color={t.color.dim}>/help for commands</Text>
         </Text>
+
         {typeof info.update_behind === 'number' && info.update_behind > 0 && (
           <Text bold color="yellow">
             ! {info.update_behind} {info.update_behind === 1 ? 'commit' : 'commits'} behind
@@ -150,7 +156,7 @@ export function SessionPanel({ info, sid, t }: { info: SessionInfo; sid?: string
   )
 }
 
-export function Panel({ sections, t, title }: { sections: PanelSection[]; t: Theme; title: string }) {
+export function Panel({ sections, t, title }: PanelProps) {
   return (
     <Box borderColor={t.color.bronze} borderStyle="round" flexDirection="column" paddingX={2} paddingY={1}>
       <Box justifyContent="center" marginBottom={1}>
@@ -186,3 +192,15 @@ export function Panel({ sections, t, title }: { sections: PanelSection[]; t: The
     </Box>
   )
 }
+
+interface PanelProps {
+  sections: PanelSection[]
+  t: Theme
+  title: string
+}
+
+interface SessionPanelProps {
+  info: SessionInfo
+  sid?: string | null
+  t: Theme
+}
diff --git a/ui-tui/src/components/maskedPrompt.tsx b/ui-tui/src/components/maskedPrompt.tsx
index f159cc681..3739326bc 100644
--- a/ui-tui/src/components/maskedPrompt.tsx
+++ b/ui-tui/src/components/maskedPrompt.tsx
@@ -5,21 +5,7 @@ import type { Theme } from '../theme.js'
 
 import { TextInput } from './textInput.js'
 
-export function MaskedPrompt({
-  cols = 80,
-  icon,
-  label,
-  onSubmit,
-  sub,
-  t
-}: {
-  cols?: number
-  icon: string
-  label: string
-  onSubmit: (v: string) => void
-  sub?: string
-  t: Theme
-}) {
+export function MaskedPrompt({ cols = 80, icon, label, onSubmit, sub, t }: MaskedPromptProps) {
   const [value, setValue] = useState('')
 
   return (
@@ -27,6 +13,7 @@ export function MaskedPrompt({
       <Text bold color={t.color.warn}>
         {icon} {label}
       </Text>
+
       {sub && <Text color={t.color.dim}> {sub}</Text>}
 
       <Box>
@@ -36,3 +23,12 @@ export function MaskedPrompt({
     </Box>
   )
 }
+
+interface MaskedPromptProps {
+  cols?: number
+  icon: string
+  label: string
+  onSubmit: (v: string) => void
+  sub?: string
+  t: Theme
+}
diff --git a/ui-tui/src/components/messageLine.tsx b/ui-tui/src/components/messageLine.tsx
index 541971a01..59db604e4 100644
--- a/ui-tui/src/components/messageLine.tsx
+++ b/ui-tui/src/components/messageLine.tsx
@@ -18,14 +18,7 @@ export const MessageLine = memo(function MessageLine({
   isStreaming = false,
   msg,
   t
-}: {
-  cols: number
-  compact?: boolean
-  detailsMode?: DetailsMode
-  isStreaming?: boolean
-  msg: Msg
-  t: Theme
-}) {
+}: MessageLineProps) {
   if (msg.kind === 'trail' && msg.tools?.length) {
     return detailsMode === 'hidden' ? null : (
       <Box flexDirection="column" marginTop={1}>
@@ -110,3 +103,12 @@ export const MessageLine = memo(function MessageLine({
     </Box>
   )
 })
+
+interface MessageLineProps {
+  cols: number
+  compact?: boolean
+  detailsMode?: DetailsMode
+  isStreaming?: boolean
+  msg: Msg
+  t: Theme
+}
diff --git a/ui-tui/src/components/modelPicker.tsx b/ui-tui/src/components/modelPicker.tsx
index b2891661a..10a00cdf1 100644
--- a/ui-tui/src/components/modelPicker.tsx
+++ b/ui-tui/src/components/modelPicker.tsx
@@ -10,19 +10,13 @@ const VISIBLE = 12
 
 const pageOffset = (count: number, sel: number) => Math.max(0, Math.min(sel - Math.floor(VISIBLE / 2), count - VISIBLE))
 
-export function ModelPicker({
-  gw,
-  onCancel,
-  onSelect,
-  sessionId,
-  t
-}: {
-  gw: GatewayClient
-  onCancel: () => void
-  onSelect: (value: string) => void
-  sessionId: string | null
-  t: Theme
-}) {
+const visibleItems = (items: string[], sel: number) => {
+  const off = pageOffset(items.length, sel)
+
+  return { items: items.slice(off, off + VISIBLE), off }
+}
+
+export function ModelPicker({ gw, onCancel, onSelect, sessionId, t }: ModelPickerProps) {
   const [providers, setProviders] = useState<ModelOptionProvider[]>([])
   const [currentModel, setCurrentModel] = useState('')
   const [err, setErr] = useState('')
@@ -66,12 +60,6 @@ export function ModelPicker({
   const provider = providers[providerIdx]
   const models = provider?.models ?? []
 
-  const visibleItems = (items: string[], sel: number) => {
-    const off = pageOffset(items.length, sel)
-
-    return { items: items.slice(off, off + VISIBLE), off }
-  }
-
   useInput((ch, key) => {
     if (key.escape) {
       if (stage === 'model') {
@@ -182,9 +170,11 @@ export function ModelPicker({
         <Text bold color={t.color.amber}>
           Select Provider
         </Text>
+
         <Text color={t.color.dim}>Current model: {currentModel || '(unknown)'}</Text>
         {provider?.warning ? <Text color={t.color.label}>warning: {provider.warning}</Text> : null}
         {off > 0 && <Text color={t.color.dim}> ↑ {off} more</Text>}
+
         {items.map((row, i) => {
           const idx = off + i
 
@@ -195,6 +185,7 @@ export function ModelPicker({
             </Text>
           )
         })}
+
         {off + VISIBLE < rows.length && <Text color={t.color.dim}> ↓ {rows.length - off - VISIBLE} more</Text>}
         <Text color={t.color.dim}>persist: {persistGlobal ? 'global' : 'session'} · g toggle</Text>
         <Text color={t.color.dim}>↑/↓ select · Enter choose · 1-9,0 quick · Esc cancel</Text>
@@ -209,10 +200,12 @@ export function ModelPicker({
       <Text bold color={t.color.amber}>
         Select Model
       </Text>
+
       <Text color={t.color.dim}>{provider?.name || '(unknown provider)'}</Text>
       {!models.length ? <Text color={t.color.dim}>no models listed for this provider</Text> : null}
       {provider?.warning ? <Text color={t.color.label}>warning: {provider.warning}</Text> : null}
       {off > 0 && <Text color={t.color.dim}> ↑ {off} more</Text>}
+
       {items.map((row, i) => {
         const idx = off + i
 
@@ -223,6 +216,7 @@ export function ModelPicker({
           </Text>
         )
       })}
+
       {off + VISIBLE < models.length && <Text color={t.color.dim}> ↓ {models.length - off - VISIBLE} more</Text>}
       <Text color={t.color.dim}>persist: {persistGlobal ? 'global' : 'session'} · g toggle</Text>
       <Text color={t.color.dim}>
@@ -231,3 +225,11 @@ export function ModelPicker({
     </Box>
   )
 }
+
+interface ModelPickerProps {
+  gw: GatewayClient
+  onCancel: () => void
+  onSelect: (value: string) => void
+  sessionId: string | null
+  t: Theme
+}
diff --git a/ui-tui/src/components/prompts.tsx b/ui-tui/src/components/prompts.tsx
index 3dd8a9d75..e53c5be44 100644
--- a/ui-tui/src/components/prompts.tsx
+++ b/ui-tui/src/components/prompts.tsx
@@ -6,10 +6,11 @@ import type { ApprovalReq, ClarifyReq } from '../types.js'
 
 import { TextInput } from './textInput.js'
 
-export function ApprovalPrompt({ onChoice, req, t }: { onChoice: (s: string) => void; req: ApprovalReq; t: Theme }) {
+const OPTS = ['once', 'session', 'always', 'deny'] as const
+const LABELS = { always: 'Always allow', deny: 'Deny', once: 'Allow once', session: 'Allow this session' } as const
+
+export function ApprovalPrompt({ onChoice, req, t }: ApprovalPromptProps) {
   const [sel, setSel] = useState(3)
-  const opts = ['once', 'session', 'always', 'deny'] as const
-  const labels = { always: 'Always allow', deny: 'Deny', once: 'Allow once', session: 'Allow this session' } as const
 
   useInput((ch, key) => {
     if (key.upArrow && sel > 0) {
@@ -21,7 +22,7 @@ export function ApprovalPrompt({ onChoice, req, t }: { onChoice: (s: string) =>
     }
 
     if (key.return) {
-      onChoice(opts[sel]!)
+      onChoice(OPTS[sel]!)
     }
 
     if (ch === 'o') {
@@ -46,34 +47,25 @@ export function ApprovalPrompt({ onChoice, req, t }: { onChoice: (s: string) =>
       <Text bold color={t.color.warn}>
         ! DANGEROUS COMMAND: {req.description}
       </Text>
+
       <Text color={t.color.dim}> {req.command}</Text>
       <Text />
-      {opts.map((o, i) => (
+
+      {OPTS.map((o, i) => (
         <Text key={o}>
           <Text color={sel === i ? t.color.warn : t.color.dim}>{sel === i ? '▸ ' : '  '}</Text>
           <Text color={sel === i ? t.color.cornsilk : t.color.dim}>
-            [{o[0]}] {labels[o]}
+            [{o[0]}] {LABELS[o]}
           </Text>
         </Text>
       ))}
+
       <Text color={t.color.dim}>↑/↓ select · Enter confirm · o/s/a/d quick pick</Text>
     </Box>
   )
 }
 
-export function ClarifyPrompt({
-  cols = 80,
-  onAnswer,
-  onCancel,
-  req,
-  t
-}: {
-  cols?: number
-  onAnswer: (s: string) => void
-  onCancel: () => void
-  req: ClarifyReq
-  t: Theme
-}) {
+export function ClarifyPrompt({ cols = 80, onAnswer, onCancel, req, t }: ClarifyPromptProps) {
   const [sel, setSel] = useState(0)
   const [custom, setCustom] = useState('')
   const [typing, setTyping] = useState(false)
@@ -117,8 +109,6 @@ export function ClarifyPrompt({
   })
 
   if (typing || !choices.length) {
-    const hint = choices.length ? 'Enter send · Esc back · Ctrl+C cancel' : 'Enter send · Esc cancel · Ctrl+C cancel'
-
     return (
       <Box flexDirection="column">
         {heading}
@@ -128,7 +118,7 @@ export function ClarifyPrompt({
           <TextInput columns={Math.max(20, cols - 6)} onChange={setCustom} onSubmit={onAnswer} value={custom} />
         </Box>
 
-        <Text color={t.color.dim}>{hint}</Text>
+        <Text color={t.color.dim}>Enter send · Esc {choices.length ? 'back' : 'cancel'} · Ctrl+C cancel</Text>
       </Box>
     )
   }
@@ -150,3 +140,17 @@ export function ClarifyPrompt({
     </Box>
   )
 }
+
+interface ApprovalPromptProps {
+  onChoice: (s: string) => void
+  req: ApprovalReq
+  t: Theme
+}
+
+interface ClarifyPromptProps {
+  cols?: number
+  onAnswer: (s: string) => void
+  onCancel: () => void
+  req: ClarifyReq
+  t: Theme
+}
diff --git a/ui-tui/src/components/queuedMessages.tsx b/ui-tui/src/components/queuedMessages.tsx
index 7688e6148..ab9c42c55 100644
--- a/ui-tui/src/components/queuedMessages.tsx
+++ b/ui-tui/src/components/queuedMessages.tsx
@@ -14,17 +14,7 @@ export function getQueueWindow(queueLen: number, queueEditIdx: number | null) {
   return { end, showLead: start > 0, showTail: end < queueLen, start }
 }
 
-export function QueuedMessages({
-  cols,
-  queueEditIdx,
-  queued,
-  t
-}: {
-  cols: number
-  queueEditIdx: number | null
-  queued: string[]
-  t: Theme
-}) {
+export function QueuedMessages({ cols, queueEditIdx, queued, t }: QueuedMessagesProps) {
   if (!queued.length) {
     return null
   }
@@ -36,12 +26,14 @@ export function QueuedMessages({
       <Text color={t.color.dim} dimColor>
         queued ({queued.length}){queueEditIdx !== null ? ` · editing ${queueEditIdx + 1}` : ''}
       </Text>
+
       {q.showLead && (
         <Text color={t.color.dim} dimColor>
           {' '}
           …
         </Text>
       )}
+
       {queued.slice(q.start, q.end).map((item, i) => {
         const idx = q.start + i
         const active = queueEditIdx === idx
@@ -52,6 +44,7 @@ export function QueuedMessages({
           </Text>
         )
       })}
+
       {q.showTail && (
         <Text color={t.color.dim} dimColor>
           {'  '}…and {queued.length - q.end} more
@@ -60,3 +53,10 @@ export function QueuedMessages({
     </Box>
   )
 }
+
+interface QueuedMessagesProps {
+  cols: number
+  queueEditIdx: number | null
+  queued: string[]
+  t: Theme
+}
diff --git a/ui-tui/src/components/sessionPicker.tsx b/ui-tui/src/components/sessionPicker.tsx
index 5aeb23878..905fa707e 100644
--- a/ui-tui/src/components/sessionPicker.tsx
+++ b/ui-tui/src/components/sessionPicker.tsx
@@ -6,7 +6,9 @@ import type { SessionListItem, SessionListResponse } from '../gatewayTypes.js'
 import { asRpcResult, rpcErrorMessage } from '../lib/rpc.js'
 import type { Theme } from '../theme.js'
 
-function age(ts: number): string {
+const VISIBLE = 15
+
+const age = (ts: number) => {
   const d = (Date.now() / 1000 - ts) / 86400
 
   if (d < 1) {
@@ -20,19 +22,7 @@ function age(ts: number): string {
   return `${Math.floor(d)}d ago`
 }
 
-const VISIBLE = 15
-
-export function SessionPicker({
-  gw,
-  onCancel,
-  onSelect,
-  t
-}: {
-  gw: GatewayClient
-  onCancel: () => void
-  onSelect: (id: string) => void
-  t: Theme
-}) {
+export function SessionPicker({ gw, onCancel, onSelect, t }: SessionPickerProps) {
   const [items, setItems] = useState<SessionListItem[]>([])
   const [err, setErr] = useState('')
   const [sel, setSel] = useState(0)
@@ -107,36 +97,48 @@ export function SessionPicker({
   }
 
   const off = Math.max(0, Math.min(sel - Math.floor(VISIBLE / 2), items.length - VISIBLE))
-  const visible = items.slice(off, off + VISIBLE)
 
   return (
     <Box flexDirection="column">
       <Text bold color={t.color.amber}>
         Resume Session
       </Text>
+
       {off > 0 && <Text color={t.color.dim}> ↑ {off} more</Text>}
-      {visible.map((s, vi) => {
+
+      {items.slice(off, off + VISIBLE).map((s, vi) => {
         const i = off + vi
 
         return (
           <Box key={s.id}>
             <Text color={sel === i ? t.color.label : t.color.dim}>{sel === i ? '▸ ' : '  '}</Text>
+
             <Box width={30}>
               <Text color={sel === i ? t.color.cornsilk : t.color.dim}>
                 {String(i + 1).padStart(2)}. [{s.id}]
               </Text>
             </Box>
+
             <Box width={30}>
               <Text color={t.color.dim}>
                 ({s.message_count} msgs, {age(s.started_at)}, {s.source || 'tui'})
               </Text>
             </Box>
+
             <Text color={sel === i ? t.color.cornsilk : t.color.dim}>{s.title || s.preview || '(untitled)'}</Text>
           </Box>
         )
       })}
+
       {off + VISIBLE < items.length && <Text color={t.color.dim}> ↓ {items.length - off - VISIBLE} more</Text>}
       <Text color={t.color.dim}>↑/↓ select · Enter resume · 1-9 quick · Esc cancel</Text>
     </Box>
   )
 }
+
+interface SessionPickerProps {
+  gw: GatewayClient
+  onCancel: () => void
+  onSelect: (id: string) => void
+  t: Theme
+}
diff --git a/ui-tui/src/components/textInput.tsx b/ui-tui/src/components/textInput.tsx
index fbbd37ccb..482537376 100644
--- a/ui-tui/src/components/textInput.tsx
+++ b/ui-tui/src/components/textInput.tsx
@@ -11,8 +11,6 @@ type InkExt = typeof Ink & {
 const ink = Ink as unknown as InkExt
 const { Box, Text, useStdin, useInput, stringWidth, useDeclaredCursor, useTerminalFocus } = ink
 
-// ── ANSI escapes ─────────────────────────────────────────────────────
-
 const ESC = '\x1b'
 const INV = `${ESC}[7m`
 const INV_OFF = `${ESC}[27m`
@@ -25,8 +23,6 @@ const BRACKET_PASTE = new RegExp(`${ESC}?\\[20[01]~`, 'g')
 const invert = (s: string) => INV + s + INV_OFF
 const dim = (s: string) => DIM + s + DIM_OFF
 
-// ── Grapheme segmenter (lazy singleton) ──────────────────────────────
-
 let _seg: Intl.Segmenter | null = null
 const seg = () => (_seg ??= new Intl.Segmenter(undefined, { granularity: 'grapheme' }))
 const STOP_CACHE_MAX = 32
@@ -106,8 +102,6 @@ function nextPos(s: string, p: number) {
   return s.length
 }
 
-// ── Word movement ────────────────────────────────────────────────────
-
 function wordLeft(s: string, p: number) {
   let i = snapPos(s, p) - 1
 
@@ -136,8 +130,6 @@ function wordRight(s: string, p: number) {
   return i
 }
 
-// ── Cursor layout (line/column from offset + terminal width) ─────────
-
 function cursorLayout(value: string, cursor: number, cols: number) {
   const pos = Math.max(0, Math.min(cursor, value.length))
   const w = Math.max(1, cols - 1)
@@ -226,8 +218,6 @@ function offsetFromPosition(value: string, row: number, col: number, cols: numbe
   return lastOffset
 }
 
-// ── Render value with inverse-video cursor ───────────────────────────
-
 function renderWithCursor(value: string, cursor: number) {
   const pos = Math.max(0, Math.min(cursor, value.length))
 
@@ -250,8 +240,6 @@ function renderWithCursor(value: string, cursor: number) {
   return done ? out : out + invert(' ')
 }
 
-// ── Forward-delete detection hook ────────────────────────────────────
-
 function useFwdDelete(active: boolean) {
   const ref = useRef(false)
   const { inputEmitter: ee } = useStdin()
@@ -275,29 +263,6 @@ function useFwdDelete(active: boolean) {
   return ref
 }
 
-// ── Types ────────────────────────────────────────────────────────────
-
-export interface PasteEvent {
-  bracketed?: boolean
-  cursor: number
-  hotkey?: boolean
-  text: string
-  value: string
-}
-
-interface Props {
-  columns?: number
-  value: string
-  onChange: (v: string) => void
-  onSubmit?: (v: string) => void
-  onPaste?: (e: PasteEvent) => { cursor: number; value: string } | null
-  mask?: string
-  placeholder?: string
-  focus?: boolean
-}
-
-// ── Component ────────────────────────────────────────────────────────
-
 export function TextInput({
   columns = 80,
   value,
@@ -307,7 +272,7 @@ export function TextInput({
   mask,
   placeholder = '',
   focus = true
-}: Props) {
+}: TextInputProps) {
   const [cur, setCur] = useState(value.length)
   const fwdDel = useFwdDelete(focus)
   const termFocus = useTerminalFocus()
@@ -331,8 +296,6 @@ export function TextInput({
   const raw = self.current ? vRef.current : value
   const display = mask ? raw.replace(/[^\n]/g, mask[0] ?? '*') : raw
 
-  // ── Cursor declaration ───────────────────────────────────────────
-
   const layout = useMemo(() => cursorLayout(display, cur, columns), [columns, cur, display])
 
   const boxRef = useDeclaredCursor({
@@ -353,18 +316,6 @@ export function TextInput({
     return renderWithCursor(display, cur)
   }, [cur, display, focus, placeholder])
 
-  const clickCursor = (e: { localRow?: number; localCol?: number }) => {
-    if (!focus) {
-      return
-    }
-
-    const next = offsetFromPosition(display, e.localRow ?? 0, e.localCol ?? 0, columns)
-    setCur(next)
-    curRef.current = next
-  }
-
-  // ── Sync external value changes ──────────────────────────────────
-
   useEffect(() => {
     if (self.current) {
       self.current = false
@@ -386,8 +337,6 @@ export function TextInput({
     []
   )
 
-  // ── Buffer ops (synchronous, ref-based) ──────────────────────────
-
   const commit = (next: string, nextCur: number, track = true) => {
     const prev = vRef.current
     const c = snapPos(next, nextCur)
@@ -450,18 +399,14 @@ export function TextInput({
 
   const ins = (v: string, c: number, s: string) => v.slice(0, c) + s + v.slice(c)
 
-  // ── Input handler ────────────────────────────────────────────────
-
   useInput(
     (inp: string, k: Key, event: InputEvent) => {
-      const raw = event.keypress.raw
-      const metaPaste = raw === '\x1bv' || raw === '\x1bV'
+      const eventRaw = event.keypress.raw
 
-      if (metaPaste) {
+      if (eventRaw === '\x1bv' || eventRaw === '\x1bV') {
         return void emitPaste({ cursor: curRef.current, hotkey: true, text: '', value: vRef.current })
       }
 
-      // Delegated to App
       if (
         k.upArrow ||
         k.downArrow ||
@@ -487,7 +432,6 @@ export function TextInput({
       let v = vRef.current
       const mod = k.ctrl || k.meta
 
-      // Undo / redo
       if (k.ctrl && inp === 'z') {
         return swap(undo, redo)
       }
@@ -496,7 +440,6 @@ export function TextInput({
         return swap(redo, undo)
       }
 
-      // Navigation
       if (k.home || (k.ctrl && inp === 'a')) {
         c = 0
       } else if (k.end || (k.ctrl && inp === 'e')) {
@@ -509,10 +452,7 @@ export function TextInput({
         c = wordLeft(v, c)
       } else if (k.meta && inp === 'f') {
         c = wordRight(v, c)
-      }
-
-      // Deletion
-      else if ((k.backspace || k.delete) && !fwdDel.current && c > 0) {
+      } else if ((k.backspace || k.delete) && !fwdDel.current && c > 0) {
         if (mod) {
           const t = wordLeft(v, c)
           v = v.slice(0, t) + v.slice(c)
@@ -538,31 +478,28 @@ export function TextInput({
         c = 0
       } else if (k.ctrl && inp === 'k') {
         v = v.slice(0, c)
-      }
-
-      // Text insertion / paste buffering
-      else if (inp.length > 0) {
+      } else if (inp.length > 0) {
         const bracketed = inp.includes('[200~')
-        const raw = inp.replace(BRACKET_PASTE, '').replace(/\r\n/g, '\n').replace(/\r/g, '\n')
+        const text = inp.replace(BRACKET_PASTE, '').replace(/\r\n/g, '\n').replace(/\r/g, '\n')
 
-        if (bracketed && emitPaste({ bracketed: true, cursor: c, text: raw, value: v })) {
+        if (bracketed && emitPaste({ bracketed: true, cursor: c, text, value: v })) {
           return
         }
 
-        if (!raw) {
+        if (!text) {
           return
         }
 
-        if (raw === '\n') {
+        if (text === '\n') {
           return commit(ins(v, c, '\n'), c + 1)
         }
 
-        if (raw.length > 1 || raw.includes('\n')) {
+        if (text.length > 1 || text.includes('\n')) {
           if (!pasteBuf.current) {
             pastePos.current = c
           }
 
-          pasteBuf.current += raw
+          pasteBuf.current += text
 
           if (pasteTimer.current) {
             clearTimeout(pasteTimer.current)
@@ -573,9 +510,9 @@ export function TextInput({
           return
         }
 
-        if (PRINTABLE.test(raw)) {
-          v = v.slice(0, c) + raw + v.slice(c)
-          c += raw.length
+        if (PRINTABLE.test(text)) {
+          v = v.slice(0, c) + text + v.slice(c)
+          c += text.length
         } else {
           return
         }
@@ -588,11 +525,39 @@ export function TextInput({
     { isActive: focus }
   )
 
-  // ── Render ───────────────────────────────────────────────────────
-
   return (
-    <Box onClick={clickCursor} ref={boxRef}>
+    <Box
+      onClick={(e: { localRow?: number; localCol?: number }) => {
+        if (!focus) {
+          return
+        }
+
+        const next = offsetFromPosition(display, e.localRow ?? 0, e.localCol ?? 0, columns)
+        setCur(next)
+        curRef.current = next
+      }}
+      ref={boxRef}
+    >
       <Text wrap="wrap">{rendered}</Text>
     </Box>
   )
 }
+
+export interface PasteEvent {
+  bracketed?: boolean
+  cursor: number
+  hotkey?: boolean
+  text: string
+  value: string
+}
+
+interface TextInputProps {
+  columns?: number
+  focus?: boolean
+  mask?: string
+  onChange: (v: string) => void
+  onPaste?: (e: PasteEvent) => { cursor: number; value: string } | null
+  onSubmit?: (v: string) => void
+  placeholder?: string
+  value: string
+}
diff --git a/ui-tui/src/components/themed.tsx b/ui-tui/src/components/themed.tsx
index b007d78aa..25fb43b44 100644
--- a/ui-tui/src/components/themed.tsx
+++ b/ui-tui/src/components/themed.tsx
@@ -5,6 +5,16 @@ import type { ReactNode } from 'react'
 import { $uiState } from '../app/uiStore.js'
 import type { ThemeColors } from '../theme.js'
 
+export function Fg({ bold, c, children, dim, italic, literal, strikethrough, underline, wrap }: FgProps) {
+  const { theme } = useStore($uiState)
+
+  return (
+    <Text color={literal ?? (c && theme.color[c])} dimColor={dim} {...{ bold, italic, strikethrough, underline, wrap }}>
+      {children}
+    </Text>
+  )
+}
+
 export type ThemeColor = keyof ThemeColors
 
 export interface FgProps {
@@ -18,28 +28,3 @@ export interface FgProps {
   underline?: boolean
   wrap?: 'end' | 'middle' | 'truncate' | 'truncate-end' | 'truncate-middle' | 'truncate-start' | 'wrap' | 'wrap-trim'
 }
-
-/**
- * Theme-aware text. `literal` wins; otherwise `c` is a palette key.
- *
- *   <Fg c="amber">hi</Fg>        // amber
- *   <Fg c="dim" dim>…</Fg>       // dim cornsilk
- *   <Fg literal="#ff00ff">x</Fg> // raw hex
- */
-export function Fg({ bold, c, children, dim, italic, literal, strikethrough, underline, wrap }: FgProps) {
-  const { theme } = useStore($uiState)
-
-  return (
-    <Text
-      bold={bold}
-      color={literal ?? (c && theme.color[c])}
-      dimColor={dim}
-      italic={italic}
-      strikethrough={strikethrough}
-      underline={underline}
-      wrap={wrap}
-    >
-      {children}
-    </Text>
-  )
-}
diff --git a/ui-tui/src/config/env.ts b/ui-tui/src/config/env.ts
index 91da2121d..3a476d6bc 100644
--- a/ui-tui/src/config/env.ts
+++ b/ui-tui/src/config/env.ts
@@ -1,5 +1,2 @@
 export const STARTUP_RESUME_ID = (process.env.HERMES_TUI_RESUME ?? '').trim()
-
-export const MOUSE_TRACKING = !/^(1|true|yes|on)$/.test(
-  (process.env.HERMES_TUI_DISABLE_MOUSE ?? '').trim().toLowerCase()
-)
+export const MOUSE_TRACKING = !/^(?:1|true|yes|on)$/i.test((process.env.HERMES_TUI_DISABLE_MOUSE ?? '').trim())
diff --git a/ui-tui/src/content/fortunes.ts b/ui-tui/src/content/fortunes.ts
index cd88dc478..87943f9f4 100644
--- a/ui-tui/src/content/fortunes.ts
+++ b/ui-tui/src/content/fortunes.ts
@@ -11,30 +11,20 @@ const FORTUNES = [
   'your instincts are correctly suspicious of that one branch'
 ]
 
-const LEGENDARY_FORTUNES = [
+const LEGENDARY = [
   'legendary drop: one-line fix, first try',
   'legendary drop: every flaky test passes cleanly',
   'legendary drop: your diff teaches by itself'
 ]
 
-const hash = (input: string) => {
-  let out = 2166136261
+const hash = (s: string) => [...s].reduce((h, c) => Math.imul(h ^ c.charCodeAt(0), 16777619), 2166136261) >>> 0
 
-  for (let i = 0; i < input.length; i++) {
-    out ^= input.charCodeAt(i)
-    out = Math.imul(out, 16777619)
-  }
+const fromScore = (n: number) => {
+  const rare = n % 20 === 0
+  const bag = rare ? LEGENDARY : FORTUNES
 
-  return out >>> 0
-}
-
-const fromScore = (score: number) => {
-  const rare = score % 20 === 0
-  const bag = rare ? LEGENDARY_FORTUNES : FORTUNES
-
-  return `${rare ? '🌟' : '🔮'} ${bag[score % bag.length]}`
+  return `${rare ? '🌟' : '🔮'} ${bag[n % bag.length]}`
 }
 
 export const randomFortune = () => fromScore(Math.floor(Math.random() * 0x7fffffff))
-
 export const dailyFortune = (seed: null | string) => fromScore(hash(`${seed || 'anon'}|${new Date().toDateString()}`))
diff --git a/ui-tui/src/domain/details.ts b/ui-tui/src/domain/details.ts
index 84c2cd80e..fa01092f5 100644
--- a/ui-tui/src/domain/details.ts
+++ b/ui-tui/src/domain/details.ts
@@ -1,6 +1,6 @@
 import type { DetailsMode } from '../types.js'
 
-const DETAILS_MODES: DetailsMode[] = ['hidden', 'collapsed', 'expanded']
+const MODES = ['hidden', 'collapsed', 'expanded'] as const
 
 const THINKING_FALLBACK: Record<string, DetailsMode> = {
   collapsed: 'collapsed',
@@ -11,12 +11,10 @@ const THINKING_FALLBACK: Record<string, DetailsMode> = {
 export const parseDetailsMode = (v: unknown): DetailsMode | null => {
   const s = typeof v === 'string' ? v.trim().toLowerCase() : ''
 
-  return DETAILS_MODES.includes(s as DetailsMode) ? (s as DetailsMode) : null
+  return MODES.find(m => m === s) ?? null
 }
 
-export const resolveDetailsMode = (
-  d: { details_mode?: unknown; thinking_mode?: unknown } | null | undefined
-): DetailsMode =>
+export const resolveDetailsMode = (d?: { details_mode?: unknown; thinking_mode?: unknown } | null): DetailsMode =>
   parseDetailsMode(d?.details_mode) ??
   THINKING_FALLBACK[
     String(d?.thinking_mode ?? '')
@@ -25,5 +23,4 @@ export const resolveDetailsMode = (
   ] ??
   'collapsed'
 
-export const nextDetailsMode = (m: DetailsMode): DetailsMode =>
-  DETAILS_MODES[(DETAILS_MODES.indexOf(m) + 1) % DETAILS_MODES.length]!
+export const nextDetailsMode = (m: DetailsMode): DetailsMode => MODES[(MODES.indexOf(m) + 1) % MODES.length]!
diff --git a/ui-tui/src/domain/messages.ts b/ui-tui/src/domain/messages.ts
index 2b7f4a513..34b072f01 100644
--- a/ui-tui/src/domain/messages.ts
+++ b/ui-tui/src/domain/messages.ts
@@ -2,30 +2,17 @@ import { LONG_MSG } from '../config/limits.js'
 import { buildToolTrailLine, fmtK } from '../lib/text.js'
 import type { Msg, SessionInfo } from '../types.js'
 
-interface ImageMeta {
-  height?: number
-  token_estimate?: number
-  width?: number
-}
-
-interface TranscriptRow {
-  context?: string
-  name?: string
-  role?: string
-  text?: string
-}
-
 export const introMsg = (info: SessionInfo): Msg => ({ info, kind: 'intro', role: 'system', text: '' })
 
-export const imageTokenMeta = (info: ImageMeta | null | undefined) =>
-  [
-    info?.width && info.height ? `${info.width}x${info.height}` : '',
-    typeof info?.token_estimate === 'number' && info.token_estimate > 0 ? `~${fmtK(info.token_estimate)} tok` : ''
-  ]
+export const imageTokenMeta = (info?: ImageMeta | null) => {
+  const { width, height, token_estimate: t } = info ?? {}
+
+  return [width && height ? `${width}x${height}` : '', (t ?? 0) > 0 ? `~${fmtK(t!)} tok` : '']
     .filter(Boolean)
     .join(' · ')
+}
 
-export const userDisplay = (text: string): string => {
+export const userDisplay = (text: string) => {
   if (text.length <= LONG_MSG) {
     return text
   }
@@ -42,8 +29,8 @@ export const toTranscriptMessages = (rows: unknown): Msg[] => {
     return []
   }
 
-  const result: Msg[] = []
-  let pendingTools: string[] = []
+  const out: Msg[] = []
+  let pending: string[] = []
 
   for (const row of rows) {
     if (!row || typeof row !== 'object') {
@@ -53,7 +40,7 @@ export const toTranscriptMessages = (rows: unknown): Msg[] => {
     const { context, name, role, text } = row as TranscriptRow
 
     if (role === 'tool') {
-      pendingTools.push(buildToolTrailLine(name ?? 'tool', context ?? ''))
+      pending.push(buildToolTrailLine(name ?? 'tool', context ?? ''))
 
       continue
     }
@@ -63,40 +50,35 @@ export const toTranscriptMessages = (rows: unknown): Msg[] => {
     }
 
     if (role === 'assistant') {
-      const msg: Msg = { role, text }
-
-      if (pendingTools.length) {
-        msg.tools = pendingTools
-        pendingTools = []
-      }
-
-      result.push(msg)
-
-      continue
-    }
-
-    if (role === 'user' || role === 'system') {
-      pendingTools = []
-      result.push({ role, text })
+      out.push({ role, text, ...(pending.length && { tools: pending }) })
+      pending = []
+    } else if (role === 'user' || role === 'system') {
+      out.push({ role, text })
+      pending = []
     }
   }
 
-  return result
+  return out
 }
 
-export function fmtDuration(ms: number) {
-  const total = Math.max(0, Math.floor(ms / 1000))
-  const hours = Math.floor(total / 3600)
-  const mins = Math.floor((total % 3600) / 60)
-  const secs = total % 60
+export const fmtDuration = (ms: number) => {
+  const t = Math.max(0, Math.floor(ms / 1000))
+  const h = Math.floor(t / 3600)
+  const m = Math.floor((t % 3600) / 60)
+  const s = t % 60
 
-  if (hours > 0) {
-    return `${hours}h ${mins}m`
-  }
-
-  if (mins > 0) {
-    return `${mins}m ${secs}s`
-  }
-
-  return `${secs}s`
+  return h > 0 ? `${h}h ${m}m` : m > 0 ? `${m}m ${s}s` : `${s}s`
+}
+
+interface ImageMeta {
+  height?: number
+  token_estimate?: number
+  width?: number
+}
+
+interface TranscriptRow {
+  context?: string
+  name?: string
+  role?: string
+  text?: string
 }
diff --git a/ui-tui/src/domain/paths.ts b/ui-tui/src/domain/paths.ts
index 120a71d79..78daff170 100644
--- a/ui-tui/src/domain/paths.ts
+++ b/ui-tui/src/domain/paths.ts
@@ -1,5 +1,6 @@
 export const shortCwd = (cwd: string, max = 28) => {
-  const p = process.env.HOME && cwd.startsWith(process.env.HOME) ? `~${cwd.slice(process.env.HOME.length)}` : cwd
+  const h = process.env.HOME
+  const p = h && cwd.startsWith(h) ? `~${cwd.slice(h.length)}` : cwd
 
   return p.length <= max ? p : `…${p.slice(-(max - 1))}`
 }
diff --git a/ui-tui/src/domain/slash.ts b/ui-tui/src/domain/slash.ts
index fd5b327d7..1fc8082ba 100644
--- a/ui-tui/src/domain/slash.ts
+++ b/ui-tui/src/domain/slash.ts
@@ -1,25 +1,7 @@
-export interface ParsedSlashCommand {
-  arg: string
-  cmd: string
-  name: string
-}
-
-export const looksLikeSlashCommand = (text: string) => {
-  if (!text.startsWith('/')) {
-    return false
-  }
-
-  const first = text.split(/\s+/, 1)[0] || ''
-
-  return !first.slice(1).includes('/')
-}
-
-export const parseSlashCommand = (cmd: string): ParsedSlashCommand => {
-  const [rawName = '', ...rest] = cmd.slice(1).split(/\s+/)
-
-  return {
-    arg: rest.join(' '),
-    cmd,
-    name: rawName.toLowerCase()
-  }
+export const looksLikeSlashCommand = (text: string) => /^\/[^\s/]*(?:\s|$)/.test(text)
+
+export const parseSlashCommand = (cmd: string) => {
+  const [name = '', ...rest] = cmd.slice(1).split(/\s+/)
+
+  return { arg: rest.join(' '), cmd, name: name.toLowerCase() }
 }
diff --git a/ui-tui/src/domain/viewport.ts b/ui-tui/src/domain/viewport.ts
index 3dccc3177..788f94269 100644
--- a/ui-tui/src/domain/viewport.ts
+++ b/ui-tui/src/domain/viewport.ts
@@ -26,17 +26,13 @@ export const stickyPromptFromViewport = (
   }
 
   const first = Math.max(0, Math.min(messages.length - 1, upperBound(offsets, top) - 1))
-  const aboveViewport = (i: number) => (offsets[i] ?? 0) + 1 < top
 
-  // Walk backward from the first visible row. The nearest user message wins:
-  // if it's still on screen, no sticky is needed; if it's already scrolled
-  // above the top, its text becomes the floating breadcrumb.
   for (let i = first; i >= 0; i--) {
     if (messages[i]?.role !== 'user') {
       continue
     }
 
-    return aboveViewport(i) ? userDisplay(messages[i]!.text.trim()).replace(/\s+/g, ' ').trim() : ''
+    return (offsets[i] ?? 0) + 1 < top ? userDisplay(messages[i]!.text.trim()).replace(/\s+/g, ' ').trim() : ''
   }
 
   return ''
diff --git a/ui-tui/src/gatewayClient.ts b/ui-tui/src/gatewayClient.ts
index ad1fed31a..3d5f89eb8 100644
--- a/ui-tui/src/gatewayClient.ts
+++ b/ui-tui/src/gatewayClient.ts
@@ -12,49 +12,34 @@ const STARTUP_TIMEOUT_MS = Math.max(5000, parseInt(process.env.HERMES_TUI_STARTU
 const REQUEST_TIMEOUT_MS = Math.max(30000, parseInt(process.env.HERMES_TUI_RPC_TIMEOUT_MS ?? '120000', 10) || 120000)
 
 const resolvePython = (root: string) => {
-  const configured = process.env.HERMES_PYTHON?.trim()
+  const configured = process.env.HERMES_PYTHON?.trim() || process.env.PYTHON?.trim()
 
   if (configured) {
     return configured
   }
 
-  const envPython = process.env.PYTHON?.trim()
-
-  if (envPython) {
-    return envPython
-  }
-
   const venv = process.env.VIRTUAL_ENV?.trim()
 
-  const candidates = [
-    venv ? resolve(venv, 'bin/python') : '',
-    venv ? resolve(venv, 'Scripts/python.exe') : '',
+  const hit = [
+    venv && resolve(venv, 'bin/python'),
+    venv && resolve(venv, 'Scripts/python.exe'),
     resolve(root, '.venv/bin/python'),
     resolve(root, '.venv/bin/python3'),
     resolve(root, 'venv/bin/python'),
     resolve(root, 'venv/bin/python3')
-  ].filter(Boolean)
+  ].find(p => p && existsSync(p))
 
-  const hit = candidates.find(path => existsSync(path))
-
-  if (hit) {
-    return hit
-  }
-
-  return process.platform === 'win32' ? 'python' : 'python3'
+  return hit || (process.platform === 'win32' ? 'python' : 'python3')
 }
 
-const asGatewayEvent = (value: unknown): GatewayEvent | null => {
-  if (!value || typeof value !== 'object' || Array.isArray(value)) {
-    return null
-  }
-
-  return typeof (value as { type?: unknown }).type === 'string' ? (value as GatewayEvent) : null
-}
+const asGatewayEvent = (value: unknown): GatewayEvent | null =>
+  value && typeof value === 'object' && !Array.isArray(value) && typeof (value as { type?: unknown }).type === 'string'
+    ? (value as GatewayEvent)
+    : null
 
 interface Pending {
-  resolve: (v: unknown) => void
   reject: (e: Error) => void
+  resolve: (v: unknown) => void
 }
 
 export class GatewayClient extends EventEmitter {
@@ -81,9 +66,7 @@ export class GatewayClient extends EventEmitter {
     }
 
     if (this.subscribed) {
-      this.emit('event', ev)
-
-      return
+      return void this.emit('event', ev)
     }
 
     this.bufferedEvents.push(ev)
@@ -94,8 +77,9 @@ export class GatewayClient extends EventEmitter {
     const python = resolvePython(root)
     const cwd = process.env.HERMES_CWD || root
     const env = { ...process.env }
-    const pyPath = (env.PYTHONPATH ?? '').trim()
+    const pyPath = env.PYTHONPATH?.trim()
     env.PYTHONPATH = pyPath ? `${root}${delimiter}${pyPath}` : root
+
     this.ready = false
     this.bufferedEvents = []
     this.pendingExit = undefined
@@ -121,11 +105,7 @@ export class GatewayClient extends EventEmitter {
       this.publish({ type: 'gateway.start_timeout', payload: { cwd, python } })
     }, STARTUP_TIMEOUT_MS)
 
-    this.proc = spawn(python, ['-m', 'tui_gateway.entry'], {
-      cwd,
-      env,
-      stdio: ['pipe', 'pipe', 'pipe']
-    })
+    this.proc = spawn(python, ['-m', 'tui_gateway.entry'], { cwd, env, stdio: ['pipe', 'pipe', 'pipe'] })
 
     this.stdoutRl = createInterface({ input: this.proc.stdout! })
     this.stdoutRl.on('line', raw => {
@@ -133,8 +113,9 @@ export class GatewayClient extends EventEmitter {
         this.dispatch(JSON.parse(raw))
       } catch {
         const preview = raw.trim().slice(0, MAX_LOG_PREVIEW) || '(empty line)'
+
         this.pushLog(`[protocol] malformed stdout: ${preview}`)
-        this.publish({ type: 'gateway.protocol_error', payload: { preview } } satisfies GatewayEvent)
+        this.publish({ type: 'gateway.protocol_error', payload: { preview } })
       }
     })
 
@@ -147,13 +128,13 @@ export class GatewayClient extends EventEmitter {
       }
 
       this.pushLog(line)
-      this.publish({ type: 'gateway.stderr', payload: { line } } satisfies GatewayEvent)
+      this.publish({ type: 'gateway.stderr', payload: { line } })
     })
 
     this.proc.on('error', err => {
       this.pushLog(`[spawn] ${err.message}`)
       this.rejectPending(new Error(`gateway error: ${err.message}`))
-      this.publish({ type: 'gateway.stderr', payload: { line: `[spawn] ${err.message}` } } satisfies GatewayEvent)
+      this.publish({ type: 'gateway.stderr', payload: { line: `[spawn] ${err.message}` } })
     })
 
     this.proc.on('exit', code => {
@@ -181,6 +162,7 @@ export class GatewayClient extends EventEmitter {
 
       if (msg.error) {
         const err = msg.error as { message?: unknown } | null | undefined
+
         p.reject(new Error(typeof err?.message === 'string' ? err.message : 'request failed'))
       } else {
         p.resolve(msg.result)
@@ -199,30 +181,29 @@ export class GatewayClient extends EventEmitter {
   }
 
   private pushLog(line: string) {
-    this.logs.push(line)
-
-    if (this.logs.length > MAX_GATEWAY_LOG_LINES) {
+    if (this.logs.push(line) > MAX_GATEWAY_LOG_LINES) {
       this.logs.splice(0, this.logs.length - MAX_GATEWAY_LOG_LINES)
     }
   }
 
   private rejectPending(err: Error) {
-    for (const [id, pending] of this.pending) {
-      this.pending.delete(id)
-      pending.reject(err)
+    for (const p of this.pending.values()) {
+      p.reject(err)
     }
+
+    this.pending.clear()
   }
 
   drain() {
     this.subscribed = true
-    const pending = this.bufferedEvents.splice(0)
 
-    for (const ev of pending) {
+    for (const ev of this.bufferedEvents.splice(0)) {
       this.emit('event', ev)
     }
 
     if (this.pendingExit !== undefined) {
       const code = this.pendingExit
+
       this.pendingExit = undefined
       this.emit('exit', code)
     }
diff --git a/ui-tui/src/hooks/useCompletion.ts b/ui-tui/src/hooks/useCompletion.ts
index c6ba28c80..5b0c2659e 100644
--- a/ui-tui/src/hooks/useCompletion.ts
+++ b/ui-tui/src/hooks/useCompletion.ts
@@ -34,7 +34,7 @@ export function useCompletion(input: string, blocked: boolean, gw: GatewayClient
     ref.current = input
 
     const isSlash = input.startsWith('/')
-    const pathWord = !isSlash ? (input.match(TAB_PATH_RE)?.[1] ?? null) : null
+    const pathWord = isSlash ? null : (input.match(TAB_PATH_RE)?.[1] ?? null)
 
     if (!isSlash && !pathWord) {
       clear()
@@ -42,6 +42,8 @@ export function useCompletion(input: string, blocked: boolean, gw: GatewayClient
       return
     }
 
+    const pathReplace = input.length - (pathWord?.length ?? 0)
+
     const t = setTimeout(() => {
       if (ref.current !== input) {
         return
@@ -53,15 +55,15 @@ export function useCompletion(input: string, blocked: boolean, gw: GatewayClient
 
       req
         .then(raw => {
-          const r = asRpcResult<CompletionResponse>(raw)
-
           if (ref.current !== input) {
             return
           }
 
+          const r = asRpcResult<CompletionResponse>(raw)
+
           setCompletions(r?.items ?? [])
           setCompIdx(0)
-          setCompReplace(isSlash ? (r?.replace_from ?? 1) : input.length - (pathWord?.length ?? 0))
+          setCompReplace(isSlash ? (r?.replace_from ?? 1) : pathReplace)
         })
         .catch((e: unknown) => {
           if (ref.current !== input) {
@@ -76,7 +78,7 @@ export function useCompletion(input: string, blocked: boolean, gw: GatewayClient
             }
           ])
           setCompIdx(0)
-          setCompReplace(isSlash ? 1 : input.length - (pathWord?.length ?? 0))
+          setCompReplace(isSlash ? 1 : pathReplace)
         })
     }, 60)
 
diff --git a/ui-tui/src/hooks/useInputHistory.ts b/ui-tui/src/hooks/useInputHistory.ts
index 369a9f50f..8192b86c8 100644
--- a/ui-tui/src/hooks/useInputHistory.ts
+++ b/ui-tui/src/hooks/useInputHistory.ts
@@ -1,4 +1,4 @@
-import { useCallback, useRef, useState } from 'react'
+import { useRef, useState } from 'react'
 
 import * as inputHistory from '../lib/history.js'
 
@@ -7,9 +7,5 @@ export function useInputHistory() {
   const [historyIdx, setHistoryIdx] = useState<number | null>(null)
   const historyDraftRef = useRef('')
 
-  const pushHistory = useCallback((text: string) => {
-    inputHistory.append(text)
-  }, [])
-
-  return { historyRef, historyIdx, setHistoryIdx, historyDraftRef, pushHistory }
+  return { historyRef, historyIdx, setHistoryIdx, historyDraftRef, pushHistory: inputHistory.append }
 }
diff --git a/ui-tui/src/hooks/useQueue.ts b/ui-tui/src/hooks/useQueue.ts
index 21bdd51c9..7546d64e7 100644
--- a/ui-tui/src/hooks/useQueue.ts
+++ b/ui-tui/src/hooks/useQueue.ts
@@ -6,9 +6,7 @@ export function useQueue() {
   const queueEditRef = useRef<number | null>(null)
   const [queueEditIdx, setQueueEditIdx] = useState<number | null>(null)
 
-  const syncQueue = useCallback(() => {
-    setQueuedDisplay([...queueRef.current])
-  }, [])
+  const syncQueue = useCallback(() => setQueuedDisplay([...queueRef.current]), [])
 
   const setQueueEdit = useCallback((idx: number | null) => {
     queueEditRef.current = idx
@@ -39,12 +37,12 @@ export function useQueue() {
   )
 
   return {
-    queueRef,
-    queueEditRef,
-    queuedDisplay,
-    queueEditIdx,
-    enqueue,
     dequeue,
+    enqueue,
+    queueEditIdx,
+    queueEditRef,
+    queueRef,
+    queuedDisplay,
     replaceQ,
     setQueueEdit,
     syncQueue
diff --git a/ui-tui/src/hooks/useVirtualHistory.ts b/ui-tui/src/hooks/useVirtualHistory.ts
index de6e71e2e..b92c07c46 100644
--- a/ui-tui/src/hooks/useVirtualHistory.ts
+++ b/ui-tui/src/hooks/useVirtualHistory.ts
@@ -33,9 +33,9 @@ export function useVirtualHistory(
   items: readonly { key: string }[],
   { estimate = ESTIMATE, overscan = OVERSCAN, maxMounted = MAX_MOUNTED, coldStartCount = COLD_START } = {}
 ) {
-  const nodes = useRef(new Map<string, any>())
+  const nodes = useRef(new Map<string, unknown>())
   const heights = useRef(new Map<string, number>())
-  const refs = useRef(new Map<string, (el: any) => void>())
+  const refs = useRef(new Map<string, (el: unknown) => void>())
   const [ver, setVer] = useState(0)
 
   useSyncExternalStore(
@@ -108,7 +108,7 @@ export function useVirtualHistory(
     let fn = refs.current.get(key)
 
     if (!fn) {
-      fn = (el: any) => (el ? nodes.current.set(key, el) : nodes.current.delete(key))
+      fn = (el: unknown) => (el ? nodes.current.set(key, el) : nodes.current.delete(key))
       refs.current.set(key, fn)
     }
 
@@ -125,7 +125,7 @@ export function useVirtualHistory(
         continue
       }
 
-      const h = Math.ceil(nodes.current.get(k)?.yogaNode?.getComputedHeight?.() ?? 0)
+      const h = Math.ceil((nodes.current.get(k) as MeasuredNode | undefined)?.yogaNode?.getComputedHeight?.() ?? 0)
 
       if (h > 0 && heights.current.get(k) !== h) {
         heights.current.set(k, h)
@@ -139,11 +139,15 @@ export function useVirtualHistory(
   }, [end, items, start])
 
   return {
-    start,
-    end,
-    offsets,
-    topSpacer: offsets[start] ?? 0,
     bottomSpacer: Math.max(0, total - (offsets[end] ?? total)),
-    measureRef
+    end,
+    measureRef,
+    offsets,
+    start,
+    topSpacer: offsets[start] ?? 0
   }
 }
+
+interface MeasuredNode {
+  yogaNode?: { getComputedHeight?: () => number } | null
+}
diff --git a/ui-tui/src/lib/history.ts b/ui-tui/src/lib/history.ts
index 87adb2eb5..9affbb808 100644
--- a/ui-tui/src/lib/history.ts
+++ b/ui-tui/src/lib/history.ts
@@ -3,12 +3,12 @@ import { homedir } from 'node:os'
 import { join } from 'node:path'
 
 const MAX = 1000
-const dir = join(process.env.HERMES_HOME ?? join(homedir(), '.hermes'))
+const dir = process.env.HERMES_HOME ?? join(homedir(), '.hermes')
 const file = join(dir, '.hermes_history')
 
 let cache: string[] | null = null
 
-export function load(): string[] {
+export function load() {
   if (cache) {
     return cache
   }
@@ -20,11 +20,10 @@ export function load(): string[] {
       return cache
     }
 
-    const lines = readFileSync(file, 'utf8').split('\n')
     const entries: string[] = []
     let current: string[] = []
 
-    for (const line of lines) {
+    for (const line of readFileSync(file, 'utf8').split('\n')) {
       if (line.startsWith('+')) {
         current.push(line.slice(1))
       } else if (current.length) {
@@ -45,7 +44,7 @@ export function load(): string[] {
   return cache
 }
 
-export function append(line: string): void {
+export function append(line: string) {
   const trimmed = line.trim()
 
   if (!trimmed) {
@@ -73,11 +72,11 @@ export function append(line: string): void {
 
     const encoded = trimmed
       .split('\n')
-      .map(l => '+' + l)
+      .map(l => `+${l}`)
       .join('\n')
 
     appendFileSync(file, `\n# ${ts}\n${encoded}\n`)
   } catch {
-    /* ignore */
+    void 0
   }
 }
diff --git a/ui-tui/src/lib/messages.ts b/ui-tui/src/lib/messages.ts
index fc265abd4..a459ec5a8 100644
--- a/ui-tui/src/lib/messages.ts
+++ b/ui-tui/src/lib/messages.ts
@@ -1,5 +1,4 @@
 import type { Msg, Role } from '../types.js'
 
-export function upsert(prev: Msg[], role: Role, text: string): Msg[] {
-  return prev.at(-1)?.role === role ? [...prev.slice(0, -1), { role, text }] : [...prev, { role, text }]
-}
+export const upsert = (prev: Msg[], role: Role, text: string): Msg[] =>
+  prev.at(-1)?.role === role ? [...prev.slice(0, -1), { role, text }] : [...prev, { role, text }]
diff --git a/ui-tui/src/lib/osc52.ts b/ui-tui/src/lib/osc52.ts
index 01688aca6..d99082992 100644
--- a/ui-tui/src/lib/osc52.ts
+++ b/ui-tui/src/lib/osc52.ts
@@ -1,3 +1,2 @@
-export function writeOsc52Clipboard(s: string): void {
-  process.stdout.write('\x1b]52;c;' + Buffer.from(s, 'utf8').toString('base64') + '\x07')
-}
+export const writeOsc52Clipboard = (s: string) =>
+  process.stdout.write(`\x1b]52;c;${Buffer.from(s, 'utf8').toString('base64')}\x07`)
diff --git a/ui-tui/src/lib/rpc.ts b/ui-tui/src/lib/rpc.ts
index c2360dd0c..1697d142b 100644
--- a/ui-tui/src/lib/rpc.ts
+++ b/ui-tui/src/lib/rpc.ts
@@ -2,13 +2,8 @@ import type { CommandDispatchResponse } from '../gatewayTypes.js'
 
 export type RpcResult = Record<string, any>
 
-export const asRpcResult = <T extends RpcResult = RpcResult>(value: unknown): T | null => {
-  if (!value || typeof value !== 'object' || Array.isArray(value)) {
-    return null
-  }
-
-  return value as T
-}
+export const asRpcResult = <T extends RpcResult = RpcResult>(value: unknown): T | null =>
+  !value || typeof value !== 'object' || Array.isArray(value) ? null : (value as T)
 
 export const asCommandDispatch = (value: unknown): CommandDispatchResponse | null => {
   const o = asRpcResult(value)
@@ -28,24 +23,11 @@ export const asCommandDispatch = (value: unknown): CommandDispatchResponse | nul
   }
 
   if (t === 'skill' && typeof o.name === 'string') {
-    return {
-      type: 'skill',
-      name: o.name,
-      message: typeof o.message === 'string' ? o.message : undefined
-    }
+    return { type: 'skill', name: o.name, message: typeof o.message === 'string' ? o.message : undefined }
   }
 
   return null
 }
 
-export const rpcErrorMessage = (err: unknown) => {
-  if (err instanceof Error && err.message) {
-    return err.message
-  }
-
-  if (typeof err === 'string' && err.trim()) {
-    return err
-  }
-
-  return 'request failed'
-}
+export const rpcErrorMessage = (err: unknown) =>
+  err instanceof Error && err.message ? err.message : typeof err === 'string' && err.trim() ? err : 'request failed'
diff --git a/ui-tui/src/lib/text.ts b/ui-tui/src/lib/text.ts
index c6b991a5e..fb10d7d2d 100644
--- a/ui-tui/src/lib/text.ts
+++ b/ui-tui/src/lib/text.ts
@@ -1,12 +1,13 @@
 import { THINKING_COT_MAX } from '../config/limits.js'
 import type { ThinkingMode } from '../types.js'
 
-// eslint-disable-next-line no-control-regex
-const ANSI_RE = /\x1b\[[0-9;]*m/g
+const ESC = String.fromCharCode(27)
+const ANSI_RE = new RegExp(`${ESC}\\[[0-9;]*m`, 'g')
+const WS_RE = /\s+/g
 
 export const stripAnsi = (s: string) => s.replace(ANSI_RE, '')
 
-export const hasAnsi = (s: string) => s.includes('\x1b[') || s.includes('\x1b]')
+export const hasAnsi = (s: string) => s.includes(`${ESC}[`) || s.includes(`${ESC}]`)
 
 const renderEstimateLine = (line: string) => {
   const trimmed = line.trim()
@@ -38,7 +39,7 @@ const renderEstimateLine = (line: string) => {
 }
 
 export const compactPreview = (s: string, max: number) => {
-  const one = s.replace(/\s+/g, ' ').trim()
+  const one = s.replace(WS_RE, ' ').trim()
 
   return !one ? '' : one.length > max ? one.slice(0, max - 1) + '…' : one
 }
@@ -46,17 +47,13 @@ export const compactPreview = (s: string, max: number) => {
 export const estimateTokensRough = (text: string) => (!text ? 0 : (text.length + 3) >> 2)
 
 export const edgePreview = (s: string, head = 16, tail = 28) => {
-  const one = s.replace(/\s+/g, ' ').trim().replace(/\]\]/g, '] ]')
+  const one = s.replace(WS_RE, ' ').trim().replace(/\]\]/g, '] ]')
 
-  if (!one) {
-    return ''
-  }
-
-  if (one.length <= head + tail + 4) {
-    return one
-  }
-
-  return `${one.slice(0, head).trimEnd()}.. ${one.slice(-tail).trimStart()}`
+  return !one
+    ? ''
+    : one.length <= head + tail + 4
+      ? one
+      : `${one.slice(0, head).trimEnd()}.. ${one.slice(-tail).trimStart()}`
 }
 
 export const pasteTokenLabel = (text: string, lineCount: number) => {
@@ -76,15 +73,7 @@ export const pasteTokenLabel = (text: string, lineCount: number) => {
 export const thinkingPreview = (reasoning: string, mode: ThinkingMode, max: number = THINKING_COT_MAX) => {
   const raw = reasoning.trim()
 
-  if (!raw || mode === 'collapsed') {
-    return ''
-  }
-
-  if (mode === 'full') {
-    return raw
-  }
-
-  return compactPreview(raw.replace(/\s+/g, ' '), max)
+  return !raw || mode === 'collapsed' ? '' : mode === 'full' ? raw : compactPreview(raw.replace(WS_RE, ' '), max)
 }
 
 export const stripTrailingPasteNewlines = (text: string) => (/[^\n]/.test(text) ? text.replace(/\n+$/, '') : text)
@@ -97,18 +86,18 @@ export const toolTrailLabel = (name: string) =>
     .join(' ') || name
 
 export const formatToolCall = (name: string, context = '') => {
+  const label = toolTrailLabel(name)
   const preview = compactPreview(context, 64)
 
-  return preview ? `${toolTrailLabel(name)}("${preview}")` : toolTrailLabel(name)
+  return preview ? `${label}("${preview}")` : label
 }
 
-export const buildToolTrailLine = (name: string, context: string, error?: boolean, note?: string): string => {
+export const buildToolTrailLine = (name: string, context: string, error?: boolean, note?: string) => {
   const detail = compactPreview(note ?? '', 72)
 
   return `${formatToolCall(name, context)}${detail ? ` :: ${detail}` : ''} ${error ? ' ✗' : ' ✓'}`
 }
 
-/** Tool completed / failed row in the inline trail (not CoT prose). */
 export const isToolTrailResultLine = (line: string) => line.endsWith(' ✓') || line.endsWith(' ✗')
 
 export const parseToolTrailResultLine = (line: string) => {
@@ -133,10 +122,8 @@ export const parseToolTrailResultLine = (line: string) => {
   return { call: body, detail: '', mark }
 }
 
-/** Ephemeral status lines that should vanish once the next phase starts. */
 export const isTransientTrailLine = (line: string) => line.startsWith('drafting ') || line === 'analyzing tool output…'
 
-/** Whether a persisted/activity tool line belongs to the same tool label as a newer line. */
 export const sameToolTrailGroup = (label: string, entry: string) =>
   entry === `${label} ✓` ||
   entry === `${label} ✗` ||
@@ -144,7 +131,6 @@ export const sameToolTrailGroup = (label: string, entry: string) =>
   entry.startsWith(`${label} ::`) ||
   entry.startsWith(`${label}:`)
 
-/** Index of the last non-result trail line, or -1. */
 export const lastCotTrailIndex = (trail: readonly string[]) => {
   for (let i = trail.length - 1; i >= 0; i--) {
     if (!isToolTrailResultLine(trail[i]!)) {
@@ -168,10 +154,7 @@ export const estimateRows = (text: string, w: number, compact = false) => {
       const lang = maybeFence[2]!.trim()
 
       if (!fence) {
-        fence = {
-          char: marker[0] as '`' | '~',
-          len: marker.length
-        }
+        fence = { char: marker[0] as '`' | '~', len: marker.length }
 
         if (lang) {
           rows += Math.ceil((`─ ${lang}`.length || 1) / w)
@@ -204,14 +187,11 @@ export const estimateRows = (text: string, w: number, compact = false) => {
 
 export const flat = (r: Record<string, string[]>) => Object.values(r).flat()
 
-const COMPACT_NUMBER = new Intl.NumberFormat('en-US', {
-  maximumFractionDigits: 1,
-  notation: 'compact'
-})
+const COMPACT_NUMBER = new Intl.NumberFormat('en-US', { maximumFractionDigits: 1, notation: 'compact' })
 
 export const fmtK = (n: number) => COMPACT_NUMBER.format(n).replace(/[KMBT]$/, s => s.toLowerCase())
 
 export const pick = <T>(a: T[]) => a[Math.floor(Math.random() * a.length)]!
 
-export const isPasteBackedText = (text: string): boolean =>
+export const isPasteBackedText = (text: string) =>
   /\[\[paste:\d+(?:[^\n]*?)\]\]|\[paste #\d+ (?:attached|excerpt)(?:[^\n]*?)\]/.test(text)
diff --git a/ui-tui/src/protocol/interpolation.ts b/ui-tui/src/protocol/interpolation.ts
index b83d16c5c..804cf1cf0 100644
--- a/ui-tui/src/protocol/interpolation.ts
+++ b/ui-tui/src/protocol/interpolation.ts
@@ -1,7 +1,3 @@
 export const INTERPOLATION_RE = /\{!(.+?)\}/g
 
-export const hasInterpolation = (s: string) => {
-  INTERPOLATION_RE.lastIndex = 0
-
-  return INTERPOLATION_RE.test(s)
-}
+export const hasInterpolation = (s: string) => /\{!.+?\}/.test(s)
diff --git a/ui-tui/src/types.ts b/ui-tui/src/types.ts
index 317d33c97..ab7d7efab 100644
--- a/ui-tui/src/types.ts
+++ b/ui-tui/src/types.ts
@@ -1,7 +1,7 @@
 export interface ActiveTool {
+  context?: string
   id: string
   name: string
-  context?: string
   startedAt?: number
 }
 
@@ -36,11 +36,11 @@ export interface ClarifyReq {
 }
 
 export interface Msg {
+  info?: SessionInfo
+  kind?: 'intro' | 'panel' | 'slash' | 'trail'
+  panelData?: PanelData
   role: Role
   text: string
-  kind?: 'intro' | 'panel' | 'slash' | 'trail'
-  info?: SessionInfo
-  panelData?: PanelData
   thinking?: string
   thinkingTokens?: number
   toolTokens?: number
@@ -76,6 +76,7 @@ export interface Usage {
 export interface SudoReq {
   requestId: string
 }
+
 export interface SecretReq {
   envVar: string
   prompt: string