feat(v0.3): M3 themes/font settings + M7 session dashboard

- M3: settings.ts (⚙ panel: dark/light/solarized theme + font size A-/A+),
  persisted to localStorage; terminal-session.applyTheme; TabApp.applySettings
  applies to all + new tabs
- M7: dashboard.ts (▦ overlay listing every tab with connection dot + folder +
  Claude status; click a row to focus; live re-render while open);
  TabApp.snapshot()/focusTab()
- Browser-verified: light theme renders + persists; dashboard lists tabs and
  focuses on click. 208 tests green, typechecks + build ok.

public/dashboard.ts

@@ -0,0 +1,94 @@
+/**
+ * public/dashboard.ts — all-sessions overview (M7).
+ *
+ * A ▦ toolbar button opens an overlay listing every tab with its connection
+ * dot, folder name, and Claude status; click a row to focus that tab. While
+ * open it re-renders every second so statuses stay live.
+ */
+
+export interface TabInfo {
+  idx: number
+  title: string
+  conn: string // SessionStatus
+  claude: string // ClaudeStatus
+  active: boolean
+  pending: boolean
+}
+
+export interface DashboardHooks {
+  snapshot: () => TabInfo[]
+  focus: (idx: number) => void
+}
+
+function claudeText(claude: string): string {
+  if (claude === 'working') return '⚙ working'
+  if (claude === 'waiting') return '⏳ needs approval'
+  if (claude === 'idle') return '✓ idle'
+  return ''
+}
+
+export function mountDashboard(toolbar: HTMLElement, hooks: DashboardHooks): void {
+  const overlay = document.createElement('div')
+  overlay.id = 'dashboard'
+  overlay.style.display = 'none'
+
+  const card = document.createElement('div')
+  card.className = 'dash-card'
+  overlay.appendChild(card)
+  document.body.appendChild(overlay)
+
+  let timer: ReturnType<typeof setInterval> | null = null
+
+  const render = (): void => {
+    card.replaceChildren()
+    const title = document.createElement('div')
+    title.className = 'dash-title'
+    title.textContent = 'Sessions'
+    card.appendChild(title)
+
+    for (const t of hooks.snapshot()) {
+      const row = document.createElement('div')
+      row.className = t.active ? 'dash-row active' : 'dash-row'
+
+      const dot = document.createElement('span')
+      dot.className = `tab-dot dot-${t.conn}`
+      const name = document.createElement('span')
+      name.className = 'dash-name'
+      name.textContent = t.title
+      const claude = document.createElement('span')
+      claude.className = t.pending ? 'dash-claude pending' : 'dash-claude'
+      claude.textContent = claudeText(t.claude)
+
+      row.append(dot, name, claude)
+      row.addEventListener('click', () => {
+        hooks.focus(t.idx)
+        hide()
+      })
+      card.appendChild(row)
+    }
+  }
+
+  const open = (): void => {
+    render()
+    overlay.style.display = 'flex'
+    timer = setInterval(render, 1000)
+  }
+  const hide = (): void => {
+    overlay.style.display = 'none'
+    if (timer !== null) {
+      clearInterval(timer)
+      timer = null
+    }
+  }
+  overlay.addEventListener('click', (e) => {
+    if (e.target === overlay) hide()
+  })
+
+  const btn = document.createElement('button')
+  btn.className = 'toolbtn'
+  btn.textContent = '▦'
+  btn.title = 'All sessions'
+  btn.setAttribute('aria-label', 'All sessions')
+  btn.addEventListener('click', () => (overlay.style.display === 'none' ? open() : hide()))
+  toolbar.appendChild(btn)
+}

public/main.ts

@@ -15,6 +15,8 @@ import { mountKeybar } from './keybar.js'
 import { TabApp } from './tabs.js'
 import { mountSearch } from './search.js'
 import { mountQrConnect } from './qr.js'
+import { mountSettings, loadSettings, type Settings } from './settings.js'
+import { mountDashboard } from './dashboard.js'
 
 const paneHost = document.getElementById('term')
 const tabs = document.getElementById('tabs')
@@ -25,6 +27,10 @@ if (!toolbar) throw new Error('#toolbar element not found in DOM')
 
 const app = new TabApp(paneHost, tabs)
 
+// Apply saved theme/font (M3) to the restored tabs.
+let settings: Settings = loadSettings()
+app.applySettings(settings)
+
 // Key bar (mobile + desktop) sends to whichever tab is active.
 mountKeybar((data) => app.sendToActive(data))
 
@@ -33,6 +39,18 @@ mountSearch(toolbar, {
   find: (query, dir) => app.findInActive(query, dir),
   clear: () => app.clearActiveSearch(),
 })
+mountSettings(
+  toolbar,
+  () => settings,
+  (s) => {
+    settings = s
+    app.applySettings(s)
+  },
+)
+mountDashboard(toolbar, {
+  snapshot: () => app.snapshot(),
+  focus: (idx) => app.focusTab(idx),
+})
 mountQrConnect(toolbar)
 
 // PWA: register the service worker (installable + offline shell, M4).

public/settings.ts

@@ -0,0 +1,128 @@
+/**
+ * public/settings.ts — theme + font-size settings (M3).
+ *
+ * A ⚙ toolbar button opens a small panel; choices persist to localStorage and
+ * apply to every terminal via the onChange callback.
+ */
+
+import type { ITheme } from '@xterm/xterm'
+
+export interface Settings {
+  theme: string
+  fontSize: number
+}
+
+export const THEMES: Record<string, ITheme> = {
+  dark: { background: '#1a1a1a', foreground: '#e8e8e8', cursor: '#e8e8e8' },
+  light: {
+    background: '#f5f5f5',
+    foreground: '#1a1a1a',
+    cursor: '#1a1a1a',
+    selectionBackground: '#bcd3f5',
+  },
+  solarized: { background: '#002b36', foreground: '#93a1a1', cursor: '#93a1a1' },
+}
+
+const KEY = 'web-terminal:settings'
+export const DEFAULT_SETTINGS: Settings = { theme: 'dark', fontSize: 14 }
+
+export function loadSettings(): Settings {
+  try {
+    const raw = localStorage.getItem(KEY)
+    if (raw) {
+      const s = JSON.parse(raw) as Partial<Settings>
+      return {
+        theme: typeof s.theme === 'string' && THEMES[s.theme] ? s.theme : DEFAULT_SETTINGS.theme,
+        fontSize:
+          typeof s.fontSize === 'number' && s.fontSize >= 10 && s.fontSize <= 24
+            ? s.fontSize
+            : DEFAULT_SETTINGS.fontSize,
+      }
+    }
+  } catch {
+    // ignore
+  }
+  return { ...DEFAULT_SETTINGS }
+}
+
+function saveSettings(s: Settings): void {
+  try {
+    localStorage.setItem(KEY, JSON.stringify(s))
+  } catch {
+    // ignore
+  }
+}
+
+export function mountSettings(
+  toolbar: HTMLElement,
+  current: () => Settings,
+  onChange: (s: Settings) => void,
+): void {
+  const panel = document.createElement('div')
+  panel.id = 'settingspanel'
+  panel.style.display = 'none'
+
+  const apply = (next: Settings): void => {
+    saveSettings(next)
+    onChange(next)
+    render()
+  }
+
+  function render(): void {
+    const s = current()
+    panel.replaceChildren()
+
+    const themeRow = document.createElement('div')
+    themeRow.className = 'settings-row'
+    themeRow.append(label('Theme'))
+    for (const key of Object.keys(THEMES)) {
+      const b = document.createElement('button')
+      b.textContent = key
+      b.className = key === s.theme ? 'settings-opt active' : 'settings-opt'
+      b.addEventListener('click', () => apply({ ...s, theme: key }))
+      themeRow.appendChild(b)
+    }
+
+    const fontRow = document.createElement('div')
+    fontRow.className = 'settings-row'
+    fontRow.append(label('Font'))
+    const minus = document.createElement('button')
+    minus.className = 'settings-opt'
+    minus.textContent = 'A−'
+    minus.addEventListener('click', () => apply({ ...s, fontSize: Math.max(10, s.fontSize - 1) }))
+    const size = document.createElement('span')
+    size.className = 'settings-size'
+    size.textContent = String(s.fontSize)
+    const plus = document.createElement('button')
+    plus.className = 'settings-opt'
+    plus.textContent = 'A+'
+    plus.addEventListener('click', () => apply({ ...s, fontSize: Math.min(24, s.fontSize + 1) }))
+    fontRow.append(minus, size, plus)
+
+    panel.append(themeRow, fontRow)
+  }
+
+  function label(text: string): HTMLElement {
+    const el = document.createElement('span')
+    el.className = 'settings-label'
+    el.textContent = text
+    return el
+  }
+
+  document.body.appendChild(panel)
+
+  const toggle = document.createElement('button')
+  toggle.className = 'toolbtn'
+  toggle.textContent = '⚙'
+  toggle.title = 'Settings (theme, font)'
+  toggle.setAttribute('aria-label', 'Settings')
+  toggle.addEventListener('click', () => {
+    if (panel.style.display === 'none') {
+      render()
+      panel.style.display = 'block'
+    } else {
+      panel.style.display = 'none'
+    }
+  })
+  toolbar.appendChild(toggle)
+}

public/style.css

@@ -153,6 +153,106 @@ html, body {
   font: inherit;
 }
 
+/* Settings panel (M3) */
+#settingspanel {
+  position: fixed;
+  top: calc(var(--tabbar-h) + 6px);
+  right: 8px;
+  z-index: 1100;
+  background: #2a2a2a;
+  border: 1px solid #3a3a3a;
+  border-radius: 6px;
+  padding: 10px;
+  min-width: 210px;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
+  color: #ddd;
+}
+.settings-row {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  margin: 6px 0;
+}
+.settings-label {
+  width: 48px;
+  color: #aaa;
+  font-size: 13px;
+}
+.settings-opt {
+  background: #333;
+  border: 1px solid #444;
+  color: #ddd;
+  border-radius: 4px;
+  padding: 4px 9px;
+  cursor: pointer;
+  font: inherit;
+  font-size: 12px;
+}
+.settings-opt.active {
+  background: #4a9eff;
+  color: #fff;
+  border-color: #4a9eff;
+}
+.settings-size {
+  min-width: 22px;
+  text-align: center;
+}
+
+/* Dashboard (M7) */
+#dashboard {
+  position: fixed;
+  inset: 0;
+  z-index: 1200;
+  display: flex;
+  align-items: flex-start;
+  justify-content: center;
+  padding-top: 56px;
+  background: rgba(0, 0, 0, 0.6);
+}
+.dash-card {
+  background: #222;
+  border: 1px solid #3a3a3a;
+  border-radius: 10px;
+  min-width: 320px;
+  max-width: 90vw;
+  max-height: 70vh;
+  overflow-y: auto;
+  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
+}
+.dash-title {
+  padding: 12px 16px;
+  font-weight: 600;
+  color: #fff;
+  border-bottom: 1px solid #3a3a3a;
+}
+.dash-row {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  padding: 10px 16px;
+  cursor: pointer;
+  color: #ddd;
+  border-bottom: 1px solid #2a2a2a;
+}
+.dash-row:hover {
+  background: #2a2a2a;
+}
+.dash-row.active {
+  background: #1a1a1a;
+  box-shadow: inset 3px 0 0 #4a9eff;
+}
+.dash-name {
+  flex: 1;
+}
+.dash-claude {
+  color: #aaa;
+  font-size: 13px;
+}
+.dash-claude.pending {
+  color: #ffcf8f;
+  font-weight: 600;
+}
+
 .tab {
   display: flex;
   align-items: center;

public/tabs.ts

@@ -17,6 +17,7 @@
  */
 
 import { TerminalSession } from './terminal-session.js'
+import { THEMES, DEFAULT_SETTINGS, type Settings } from './settings.js'
 
 const TABS_KEY = 'web-terminal:tabs'
 const ACTIVE_KEY = 'web-terminal:active'
@@ -41,6 +42,7 @@ export class TabApp {
   private editingIndex = -1
   private dragIndex = -1
   private notifyAsked = false
+  private settings: Settings = DEFAULT_SETTINGS
   private readonly paneHost: HTMLElement
   private readonly tabBar: HTMLElement
   private readonly approvalBar: HTMLDivElement
@@ -181,6 +183,7 @@ export class TabApp {
     })
     this.paneHost.appendChild(entry.session.el)
     this.tabs.push(entry)
+    entry.session.applyTheme(THEMES[this.settings.theme] ?? THEMES['dark']!, this.settings.fontSize)
     entry.session.connect()
     return entry
   }
@@ -251,6 +254,36 @@ export class TabApp {
     this.tabs[this.activeIndex]?.session.send(data)
   }
 
+  /** Apply theme + font settings to every terminal (M3). */
+  applySettings(s: Settings): void {
+    this.settings = s
+    const theme = THEMES[s.theme] ?? THEMES['dark']!
+    for (const t of this.tabs) t.session.applyTheme(theme, s.fontSize)
+  }
+
+  /** A read-only view of all tabs for the dashboard (M7). */
+  snapshot(): Array<{
+    idx: number
+    title: string
+    conn: string
+    claude: string
+    active: boolean
+    pending: boolean
+  }> {
+    return this.tabs.map((t, idx) => ({
+      idx,
+      title: this.displayTitle(t, idx),
+      conn: t.session.status,
+      claude: t.session.claudeStatus,
+      active: idx === this.activeIndex,
+      pending: t.session.pendingApproval,
+    }))
+  }
+
+  focusTab(idx: number): void {
+    this.activate(idx)
+  }
+
   /** Scrollback search in the active tab (M1). */
   findInActive(query: string, dir: 'next' | 'prev'): void {
     const s = this.tabs[this.activeIndex]?.session

public/terminal-session.ts

@@ -9,6 +9,7 @@
  */
 
 import { Terminal } from '@xterm/xterm'
+import type { ITheme } from '@xterm/xterm'
 import { FitAddon } from '@xterm/addon-fit'
 import { SearchAddon } from '@xterm/addon-search'
 import { WebLinksAddon } from '@xterm/addon-web-links'
@@ -302,6 +303,16 @@ export class TerminalSession {
     this.searchAddon.clearDecorations()
   }
 
+  /** Apply a theme + font size (M3) and re-fit if visible. */
+  applyTheme(theme: ITheme, fontSize: number): void {
+    this.term.options.theme = theme
+    this.term.options.fontSize = fontSize
+    if (this.el.style.display !== 'none') {
+      const dims = this.safefit()
+      if (dims !== null) this.sendResize(dims.cols, dims.rows)
+    }
+  }
+
   /** Make this pane visible, fit it, and focus it. */
   show(): void {
     this.el.style.display = 'block'