diff --git a/apps/operator/assets/styles/tokens.css b/apps/operator/assets/styles/tokens.css
index bb40023..0da2f4c 100644
--- a/apps/operator/assets/styles/tokens.css
+++ b/apps/operator/assets/styles/tokens.css
@@ -37,4 +37,47 @@
   --font-mono: 'JetBrains Mono', ui-monospace, 'Menlo', monospace;
 
   --input-bg: rgba(244, 243, 238, 0.04);
+
+  /* Cosmetic density. comfy=1, compact≈0.78. Used by page chrome that opts in
+     (PageHeader / table cells). Reading via calc() keeps layouts in one place. */
+  --density-scale: 1;
+}
+
+/* Tweaks: density overrides */
+:root[data-density='compact'] { --density-scale: 0.78; }
+
+/* Tweaks: light theme (warm cream, charcoal text). Overrides every surface
+   token so any component that uses var(--bg / --surface / --text / ...) flips
+   without code changes. Components that hard-code rgba(244,243,238,...) will
+   not flip — those should switch to tokens if they care about light mode. */
+:root[data-theme='light'] {
+  --bg:        #F6F4EF;
+  --surface:   #FAF8F2;
+  --elevated:  #FFFFFF;
+  --border:    #E2DED2;
+  --border-hi: #D0CBBC;
+
+  --text:      #1C1B17;
+  --text-dim:  rgba(28, 27, 23, 0.72);
+  --text-mute: rgba(28, 27, 23, 0.50);
+
+  --side-bg:     #F0EDE4;
+  --side-surf:   #FAF8F2;
+  --side-border: #E2DED2;
+  --side-text:   #1C1B17;
+  --side-dim:    rgba(28, 27, 23, 0.62);
+  --side-mute:   rgba(28, 27, 23, 0.42);
+  --side-hover:  rgba(28, 27, 23, 0.05);
+  --side-active: rgba(28, 27, 23, 0.08);
+
+  --accent: #1F8A5B;
+  --accent-fg: #FAF8F2;
+  --signal: #1F8A5B;
+
+  --ok:   #1F8A5B;
+  --warn: #C97F1F;
+  --bad:  #C03A3A;
+  --info: #2A6FDB;
+
+  --input-bg: rgba(28, 27, 23, 0.04);
 }
diff --git a/apps/operator/components/CommandPalette.vue b/apps/operator/components/CommandPalette.vue
new file mode 100644
index 0000000..c777043
--- /dev/null
+++ b/apps/operator/components/CommandPalette.vue
@@ -0,0 +1,366 @@
+<script setup lang="ts">
+import type { IconName } from './UiIcon.vue'
+import type { Tenant } from '~/types/tenant'
+import type { Partner } from '~/types/partner'
+import { FLAGS, INCIDENT } from '~/data/fixtures'
+
+// Each row in the palette. `action` decides what happens on Enter / click.
+// We try `to` first (a navigateTo) since most rows are navigation; `run` is
+// the escape hatch for actions that aren't a route (open modal, toast, etc.).
+interface Row {
+  id: string
+  groupLabel: string
+  title: string
+  subtitle?: string
+  icon?: IconName
+  badge?: string
+  to?: string
+  run?: () => void
+}
+
+const { isOpen, close } = useCommandPalette()
+const { open: openImpersonation } = useImpersonation()
+const { open: openIncident } = useIncidentModal()
+
+const query = ref('')
+const cursor = ref(0)
+const inputRef = ref<HTMLInputElement | null>(null)
+
+// Only fetch when the palette has been opened at least once, then refresh on
+// every open so newly-created tenants/partners show up. SSR is disabled (the
+// palette is client-only).
+const { data: tenants, refresh: rT } = useLazyFetch<Tenant[]>('/api/tenants', { default: () => [], server: false })
+const { data: partners, refresh: rP } = useLazyFetch<Partner[]>('/api/partners', { default: () => [], server: false })
+
+const NAV: { id: string; label: string; icon: IconName; to: string }[] = [
+  { id: 'n-overview', label: 'Overview',         icon: 'home',      to: '/' },
+  { id: 'n-tenants',  label: 'Tenants',          icon: 'building',  to: '/tenants' },
+  { id: 'n-partners', label: 'Partners',         icon: 'briefcase', to: '/partners' },
+  { id: 'n-users',    label: 'Users (global)',   icon: 'users',     to: '/users' },
+  { id: 'n-support',  label: 'Support',          icon: 'help',      to: '/support' },
+  { id: 'n-billing',  label: 'Platform billing', icon: 'card',      to: '/billing' },
+  { id: 'n-reports',  label: 'Reports',          icon: 'database',  to: '/reports' },
+  { id: 'n-infra',    label: 'Infrastructure',   icon: 'plug',      to: '/infrastructure' },
+  { id: 'n-flags',    label: 'Feature flags',    icon: 'shield',    to: '/flags' },
+  { id: 'n-audit',    label: 'Audit log',        icon: 'file',      to: '/audit' },
+  { id: 'n-team',     label: 'Operator team',    icon: 'users',     to: '/operator-team' },
+  { id: 'n-settings', label: 'Platform settings',icon: 'shield',    to: '/settings' },
+]
+
+function tenantRows(): Row[] {
+  return (tenants.value ?? []).map((t) => ({
+    id: `t-${t._id}`,
+    groupLabel: 'Tenants',
+    title: t.name,
+    subtitle: `${t.domains?.[0] ?? t.slug} · ${t.plan} · ${t.status}`,
+    icon: 'building',
+    badge: t.status,
+    to: `/tenants/${t.slug}`,
+  }))
+}
+
+function partnerRows(): Row[] {
+  return (partners.value ?? []).map((p) => ({
+    id: `p-${p._id}`,
+    groupLabel: 'Partners',
+    title: p.name,
+    subtitle: `${p.domain} · ${p.customers} customers · ${p.marginPct}% margin`,
+    icon: 'briefcase',
+    badge: p.status,
+    to: `/partners/${p.slug}`,
+  }))
+}
+
+function flagRows(): Row[] {
+  return FLAGS.slice(0, 6).map((f) => ({
+    id: `f-${f.key}`,
+    groupLabel: 'Feature flags',
+    title: f.key,
+    subtitle: f.state === 'rollout' ? `rollout · ${f.pct}% · ${f.scope}` : `${f.state} · ${f.scope}`,
+    icon: 'plug',
+    to: '/flags',
+  }))
+}
+
+function navRows(): Row[] {
+  return NAV.map((n) => ({
+    id: n.id, groupLabel: 'Navigation', title: n.label, subtitle: 'navigate', icon: n.icon, to: n.to,
+  }))
+}
+
+function actionRows(): Row[] {
+  const firstTenant = tenants.value?.[0]
+  return [
+    {
+      id: 'a-impersonate',
+      groupLabel: 'Actions',
+      title: 'Impersonate user…',
+      subtitle: firstTenant ? `enter ${firstTenant.name} as a user` : 'no tenants yet',
+      icon: 'key',
+      run: () => firstTenant && openImpersonation(firstTenant),
+    },
+    {
+      id: 'a-incident',
+      groupLabel: 'Actions',
+      title: 'Open active incident',
+      subtitle: INCIDENT.title,
+      icon: 'bell',
+      run: () => openIncident(),
+    },
+    {
+      id: 'a-toggle-theme',
+      groupLabel: 'Actions',
+      title: 'Toggle theme',
+      subtitle: 'dark / light',
+      icon: 'shield',
+      run: () => {
+        const { state, setTheme } = useTweaks()
+        setTheme(state.value.theme === 'dark' ? 'light' : 'dark')
+      },
+    },
+  ]
+}
+
+interface Group { label: string; items: Row[] }
+
+const groups = computed<Group[]>(() => {
+  const q = query.value.trim().toLowerCase()
+  const all: Row[] = [
+    ...tenantRows(),
+    ...partnerRows(),
+    ...flagRows(),
+    ...navRows(),
+    ...actionRows(),
+  ]
+  const matches = q
+    ? all.filter((r) => r.title.toLowerCase().includes(q) || (r.subtitle ?? '').toLowerCase().includes(q))
+    : all
+  const grouped = new Map<string, Row[]>()
+  for (const r of matches) {
+    const arr = grouped.get(r.groupLabel) ?? []
+    arr.push(r)
+    grouped.set(r.groupLabel, arr)
+  }
+  // Stable group order
+  const order = ['Tenants', 'Partners', 'Feature flags', 'Navigation', 'Actions']
+  return order
+    .filter((g) => grouped.has(g))
+    .map((g) => ({ label: g, items: (grouped.get(g) ?? []).slice(0, 8) }))
+})
+
+const flat = computed(() => groups.value.flatMap((g) => g.items))
+
+watch(isOpen, async (v) => {
+  if (!v) return
+  query.value = ''
+  cursor.value = 0
+  await Promise.all([rT(), rP()])
+  await nextTick()
+  inputRef.value?.focus()
+})
+
+watch(query, () => {
+  cursor.value = 0
+})
+
+function activate(row?: Row) {
+  if (!row) return
+  if (row.run) row.run()
+  if (row.to) navigateTo(row.to)
+  close()
+}
+
+function onKey(e: KeyboardEvent) {
+  if (e.key === 'Escape') {
+    e.preventDefault()
+    close()
+  }
+  if (e.key === 'ArrowDown') {
+    e.preventDefault()
+    cursor.value = Math.min(cursor.value + 1, Math.max(0, flat.value.length - 1))
+  }
+  if (e.key === 'ArrowUp') {
+    e.preventDefault()
+    cursor.value = Math.max(0, cursor.value - 1)
+  }
+  if (e.key === 'Enter') {
+    e.preventDefault()
+    activate(flat.value[cursor.value])
+  }
+}
+</script>
+
+<template>
+  <Teleport to="body">
+    <div v-if="isOpen" class="palette-backdrop" @click="close">
+      <div class="palette" role="dialog" aria-label="Command palette" @click.stop>
+        <div class="input-row">
+          <UiIcon name="search" :size="14" />
+          <input
+            ref="inputRef"
+            v-model="query"
+            type="text"
+            placeholder="Search tenants, partners, actions…"
+            autocomplete="off"
+            @keydown="onKey"
+          />
+          <span class="kbd">ESC</span>
+        </div>
+
+        <div class="results">
+          <template v-if="groups.length">
+            <div v-for="g in groups" :key="g.label" class="group">
+              <div class="group-label">{{ g.label }}</div>
+              <button
+                v-for="item in g.items"
+                :key="item.id"
+                type="button"
+                :class="['row', { active: item.id === flat[cursor]?.id }]"
+                @mouseenter="cursor = flat.findIndex((x) => x.id === item.id)"
+                @click="activate(item)"
+              >
+                <span class="icon-tile">
+                  <UiIcon v-if="item.icon" :name="item.icon" :size="13" />
+                </span>
+                <span class="row-body">
+                  <span class="row-title">{{ item.title }}</span>
+                  <span v-if="item.subtitle" class="row-sub">{{ item.subtitle }}</span>
+                </span>
+                <Mono v-if="item.badge" dim>{{ item.badge }}</Mono>
+              </button>
+            </div>
+          </template>
+          <div v-else class="empty">
+            <Mono dim>// no matches for "{{ query }}"</Mono>
+          </div>
+        </div>
+
+        <footer>
+          <Mono dim>{{ flat.length }} {{ flat.length === 1 ? 'result' : 'results' }}</Mono>
+          <Mono dim>↑↓ navigate · ↵ open · esc close</Mono>
+        </footer>
+      </div>
+    </div>
+  </Teleport>
+</template>
+
+<style scoped>
+.palette-backdrop {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.55);
+  display: flex;
+  align-items: flex-start;
+  justify-content: center;
+  padding: 15vh 24px 24px 24px;
+  z-index: 200;
+}
+
+.palette {
+  width: 100%;
+  max-width: 640px;
+  background: var(--elevated);
+  color: var(--text);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
+  display: flex;
+  flex-direction: column;
+  max-height: 70vh;
+  overflow: hidden;
+}
+
+.input-row {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 14px 18px;
+  border-bottom: 1px solid var(--border);
+  color: var(--text-mute);
+}
+.input-row input {
+  flex: 1;
+  border: 0;
+  outline: 0;
+  background: transparent;
+  font-family: inherit;
+  font-size: 15px;
+  color: var(--text);
+}
+.kbd {
+  font-family: var(--font-mono);
+  font-size: 10px;
+  padding: 2px 6px;
+  background: var(--surface);
+  border-radius: 3px;
+  color: var(--text-mute);
+  letter-spacing: 0.04em;
+}
+
+.results {
+  flex: 1;
+  overflow-y: auto;
+  padding: 6px;
+}
+.group { margin-bottom: 4px; }
+.group-label {
+  padding: 10px 14px 4px 14px;
+  font-family: var(--font-mono);
+  font-size: 10px;
+  letter-spacing: 0.14em;
+  text-transform: uppercase;
+  font-weight: 500;
+  color: var(--text-mute);
+}
+
+.row {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  width: 100%;
+  padding: 8px 14px;
+  background: transparent;
+  border: 0;
+  border-left: 2px solid transparent;
+  border-radius: 6px;
+  color: var(--text);
+  font-family: inherit;
+  cursor: pointer;
+  text-align: left;
+}
+.row.active {
+  background: rgba(212, 255, 58, 0.08);
+  border-left-color: var(--accent);
+}
+.icon-tile {
+  width: 22px;
+  height: 22px;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  color: var(--text-mute);
+  flex-shrink: 0;
+}
+.row.active .icon-tile { color: var(--accent); }
+
+.row-body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
+.row-title { font-size: 13px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
+.row-sub {
+  font-size: 11px;
+  color: var(--text-mute);
+  font-family: var(--font-mono);
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+}
+
+.empty { padding: 40px 18px; text-align: center; }
+
+footer {
+  padding: 8px 14px;
+  border-top: 1px solid var(--border);
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+}
+</style>
diff --git a/apps/operator/components/ImpersonationBanner.vue b/apps/operator/components/ImpersonationBanner.vue
new file mode 100644
index 0000000..4a58d24
--- /dev/null
+++ b/apps/operator/components/ImpersonationBanner.vue
@@ -0,0 +1,86 @@
+<script setup lang="ts">
+// Persistent red banner at the very top of the operator chrome. Renders
+// whenever useImpersonation().active is set. Sits OUTSIDE the sidebar/topbar
+// so it spans the full window width.
+
+const { active, asUser, exit } = useImpersonation()
+</script>
+
+<template>
+  <div v-if="active" class="banner" role="alert">
+    <span class="pill">
+      <span class="dot" />
+      Operator impersonation
+    </span>
+    <div class="body">
+      Viewing <strong>{{ active.name }}</strong> as <strong>{{ asUser }}</strong>.
+      Every action you take is logged with your operator identity.
+    </div>
+    <button class="log-note" type="button">Log note</button>
+    <button class="exit" type="button" @click="exit">
+      <UiIcon name="x" :size="12" />
+      Exit impersonation
+    </button>
+  </div>
+</template>
+
+<style scoped>
+.banner {
+  background: #9F1D1D;
+  color: #FEEEEE;
+  padding: 8px 20px;
+  display: flex;
+  align-items: center;
+  gap: 14px;
+  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
+  flex-shrink: 0;
+  animation: impersonationGlow 1.4s ease-in-out infinite alternate;
+}
+.pill {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  padding: 4px 10px;
+  background: rgba(255, 255, 255, 0.14);
+  border-radius: 4px;
+  font-family: var(--font-mono);
+  font-size: 10px;
+  letter-spacing: 0.14em;
+  text-transform: uppercase;
+  font-weight: 700;
+}
+.dot { width: 6px; height: 6px; border-radius: 999px; background: #fff; }
+.body { flex: 1; min-width: 0; font-size: 13px; }
+.body strong { font-weight: 700; }
+
+.log-note, .exit {
+  border: 0;
+  font-family: inherit;
+  cursor: pointer;
+  white-space: nowrap;
+  flex-shrink: 0;
+  border-radius: 4px;
+}
+.log-note {
+  background: transparent;
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  color: #FEEEEE;
+  font-size: 12px;
+  padding: 5px 12px;
+}
+.exit {
+  background: #FEEEEE;
+  color: #9F1D1D;
+  font-size: 12px;
+  font-weight: 600;
+  padding: 6px 14px;
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+}
+
+@keyframes impersonationGlow {
+  from { box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.1); }
+  to   { box-shadow: inset 0 -1px 0 rgba(255, 200, 200, 0.3); }
+}
+</style>
diff --git a/apps/operator/components/ImpersonationModal.vue b/apps/operator/components/ImpersonationModal.vue
new file mode 100644
index 0000000..82d7994
--- /dev/null
+++ b/apps/operator/components/ImpersonationModal.vue
@@ -0,0 +1,158 @@
+<script setup lang="ts">
+const { candidate, cancel, confirm } = useImpersonation()
+const reason = ref('Customer reported issue — investigating')
+const asUser = ref('first-user@example.com · Owner')
+
+watch(candidate, (v) => {
+  if (v) {
+    reason.value = 'Customer reported issue — investigating'
+  }
+})
+
+function onConfirm() {
+  if (!reason.value.trim()) return
+  confirm(reason.value.trim(), asUser.value)
+}
+</script>
+
+<template>
+  <Teleport to="body">
+    <div v-if="candidate" class="backdrop" @click="cancel">
+      <div class="modal" role="dialog" :aria-label="`Impersonate inside ${candidate.name}`" @click.stop>
+        <header>
+          <div>
+            <Eyebrow>Operator action · logged</Eyebrow>
+            <h2>Impersonate inside {{ candidate.name }}</h2>
+          </div>
+          <button class="x" type="button" aria-label="Close" @click="cancel">
+            <UiIcon name="x" :size="12" />
+          </button>
+        </header>
+
+        <div class="body">
+          <div class="warn">
+            <UiIcon name="shield" :size="15" />
+            <p>
+              You'll see <strong>{{ candidate.name }}</strong>'s workspace exactly as one of their users sees it.
+              Any state-changing action will be flagged in their audit log as an operator action with your name
+              attached. <Mono dim>// stub — no real session is created</Mono>
+            </p>
+          </div>
+
+          <label class="field">
+            <span>Impersonate as</span>
+            <input v-model="asUser" type="text" />
+          </label>
+
+          <label class="field">
+            <span>Reason (required)</span>
+            <input v-model="reason" type="text" />
+          </label>
+
+          <Mono dim class="note">// logged as op.impersonate · session expires after 30 min idle</Mono>
+        </div>
+
+        <footer>
+          <UiButton variant="ghost" @click="cancel">Cancel</UiButton>
+          <UiButton variant="danger" :disabled="!reason.trim()" @click="onConfirm">
+            <template #leading><UiIcon name="key" :size="13" /></template>
+            Enter impersonation mode
+          </UiButton>
+        </footer>
+      </div>
+    </div>
+  </Teleport>
+</template>
+
+<style scoped>
+.backdrop {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.55);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 24px;
+  z-index: 180;
+}
+.modal {
+  width: 100%;
+  max-width: 520px;
+  background: var(--elevated);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+header {
+  padding: 16px 20px;
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-start;
+  border-bottom: 1px solid var(--border);
+}
+h2 { margin: 4px 0 0 0; font-family: var(--font-display); font-weight: 600; font-size: 17px; }
+.x {
+  width: 26px; height: 26px;
+  border: 0; border-radius: 6px; background: transparent;
+  color: var(--text-mute); cursor: pointer;
+  display: inline-flex; align-items: center; justify-content: center;
+}
+.x:hover { background: var(--surface); color: var(--text); }
+
+.body {
+  padding: 16px 20px;
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+}
+
+.warn {
+  display: flex;
+  align-items: flex-start;
+  gap: 10px;
+  padding: 12px 14px;
+  background: rgba(226, 48, 48, 0.06);
+  border: 1px solid rgba(226, 48, 48, 0.24);
+  border-left: 3px solid var(--bad);
+  border-radius: 6px;
+  color: var(--bad);
+}
+.warn p { margin: 0; font-size: 12px; color: var(--text-dim); line-height: 1.55; }
+.warn strong { color: var(--text); }
+
+.field { display: flex; flex-direction: column; gap: 6px; }
+.field span {
+  font-family: var(--font-mono);
+  font-size: 10px;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+  color: var(--text-mute);
+  font-weight: 500;
+}
+.field input {
+  height: 34px;
+  padding: 0 12px;
+  border: 1px solid var(--border);
+  background: var(--input-bg);
+  color: var(--text);
+  border-radius: 6px;
+  font-family: inherit;
+  font-size: 13px;
+  outline: 0;
+}
+.field input:focus { border-color: var(--border-hi); }
+
+.note { padding-top: 2px; }
+
+footer {
+  padding: 12px 20px;
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  border-top: 1px solid var(--border);
+  background: var(--surface);
+}
+</style>
diff --git a/apps/operator/components/IncidentModal.vue b/apps/operator/components/IncidentModal.vue
new file mode 100644
index 0000000..f6b43ed
--- /dev/null
+++ b/apps/operator/components/IncidentModal.vue
@@ -0,0 +1,167 @@
+<script setup lang="ts">
+import { INCIDENT } from '~/data/fixtures'
+
+const { isOpen, close } = useIncidentModal()
+const draft = ref('')
+
+onMounted(() => {
+  const onKey = (e: KeyboardEvent) => {
+    if (e.key === 'Escape' && isOpen.value) close()
+  }
+  document.addEventListener('keydown', onKey)
+  onBeforeUnmount(() => document.removeEventListener('keydown', onKey))
+})
+</script>
+
+<template>
+  <Teleport to="body">
+    <div v-if="isOpen" class="backdrop" @click="close">
+      <div class="modal" role="dialog" :aria-label="INCIDENT.title" @click.stop>
+        <header>
+          <div>
+            <Eyebrow>{{ INCIDENT.id }} · {{ INCIDENT.severity }}</Eyebrow>
+            <h2>{{ INCIDENT.title }}</h2>
+          </div>
+          <button class="x" type="button" aria-label="Close" @click="close">
+            <UiIcon name="x" :size="12" />
+          </button>
+        </header>
+
+        <div class="body">
+          <div class="metrics">
+            <MetricCell label="status" :value="INCIDENT.state" tone="warn" />
+            <MetricCell label="started" :value="INCIDENT.started" />
+            <MetricCell label="duration" :value="INCIDENT.duration" />
+            <MetricCell label="affected" value="12 tenants" />
+            <MetricCell label="incident lead" :value="INCIDENT.ic" />
+            <MetricCell label="severity" :value="INCIDENT.severity" tone="bad" />
+          </div>
+
+          <Eyebrow>Updates</Eyebrow>
+          <div class="timeline">
+            <div v-for="(u, i) in INCIDENT.updates" :key="i" class="upd">
+              <span class="bullet" :class="{ first: i === 0 }" />
+              <div>
+                <div class="upd-head">
+                  <Mono>{{ u.t }}</Mono>
+                  <span class="who">{{ u.who }}</span>
+                </div>
+                <p>{{ u.msg }}</p>
+              </div>
+            </div>
+          </div>
+
+          <div class="compose">
+            <input v-model="draft" type="text" placeholder="Add update… (markdown supported)" />
+            <div class="compose-foot">
+              <Mono dim>// will notify on-call + post to #incidents</Mono>
+              <UiButton variant="primary" :disabled="!draft.trim()">Post update</UiButton>
+            </div>
+          </div>
+        </div>
+
+        <footer>
+          <UiButton variant="ghost" @click="close">Close</UiButton>
+          <UiButton variant="secondary">
+            <template #leading><UiIcon name="bell" :size="13" /></template>
+            Notify customers
+          </UiButton>
+          <UiButton variant="primary">Mark resolved</UiButton>
+        </footer>
+      </div>
+    </div>
+  </Teleport>
+</template>
+
+<style scoped>
+.backdrop {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.55);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  padding: 24px;
+  z-index: 180;
+}
+.modal {
+  width: 100%;
+  max-width: 680px;
+  max-height: 86vh;
+  background: var(--elevated);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+header {
+  padding: 16px 20px;
+  display: flex;
+  justify-content: space-between;
+  align-items: flex-start;
+  border-bottom: 1px solid var(--border);
+}
+h2 { margin: 4px 0 0 0; font-family: var(--font-display); font-weight: 600; font-size: 18px; }
+.x {
+  width: 26px; height: 26px;
+  border: 0; border-radius: 6px; background: transparent;
+  color: var(--text-mute); cursor: pointer;
+  display: inline-flex; align-items: center; justify-content: center;
+}
+.x:hover { background: var(--surface); color: var(--text); }
+
+.body {
+  padding: 20px;
+  overflow-y: auto;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
+
+.timeline { display: flex; flex-direction: column; gap: 14px; padding-left: 14px; border-left: 1px solid var(--border); margin-left: 6px; }
+.upd { position: relative; }
+.bullet {
+  position: absolute;
+  left: -19px; top: 5px;
+  width: 8px; height: 8px;
+  border-radius: 999px;
+  background: var(--text-mute);
+}
+.bullet.first { background: var(--accent); }
+.upd-head { display: flex; align-items: baseline; gap: 8px; }
+.who { font-size: 12px; font-weight: 500; }
+.upd p { margin: 4px 0 0 0; font-size: 13px; color: var(--text-dim); }
+
+.compose {
+  background: var(--bg);
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  padding: 10px 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+}
+.compose input {
+  height: 32px;
+  background: transparent;
+  border: 0;
+  outline: 0;
+  font-family: inherit;
+  font-size: 13px;
+  color: var(--text);
+}
+.compose-foot { display: flex; justify-content: space-between; align-items: center; }
+
+footer {
+  padding: 12px 20px;
+  display: flex;
+  justify-content: flex-end;
+  gap: 8px;
+  border-top: 1px solid var(--border);
+  background: var(--surface);
+}
+</style>
diff --git a/apps/operator/components/OpTopbar.vue b/apps/operator/components/OpTopbar.vue
index d2701ed..06d6082 100644
--- a/apps/operator/components/OpTopbar.vue
+++ b/apps/operator/components/OpTopbar.vue
@@ -1,12 +1,9 @@
 <script setup lang="ts">
-type Env = 'prod' | 'staging' | 'dev'
-
-withDefaults(
-  defineProps<{ env?: Env; oncall?: boolean }>(),
-  { env: 'prod', oncall: true },
-)
+withDefaults(defineProps<{ oncall?: boolean }>(), { oncall: true })
 
 const { user } = useOidcAuth()
+const { state: tweaks } = useTweaks()
+const { open: openPalette } = useCommandPalette()
 
 const ENVS = {
   prod:    { label: 'PROD',    fg: 'var(--text)', bg: 'rgba(244,243,238,0.08)', border: 'rgba(244,243,238,0.15)' },
@@ -14,11 +11,7 @@ const ENVS = {
   dev:     { label: 'DEV',     fg: '#D4AAFF',     bg: 'rgba(159,98,212,0.18)',  border: 'rgba(159,98,212,0.36)' },
 } as const
 
-function openPalette() {
-  // ⌘K palette lands in O.8 — this is the trigger surface.
-  // eslint-disable-next-line no-console
-  console.log('[palette] open requested')
-}
+const env = computed(() => tweaks.value.env)
 </script>
 
 <template>
diff --git a/apps/operator/components/TweaksPanel.vue b/apps/operator/components/TweaksPanel.vue
new file mode 100644
index 0000000..5c62fce
--- /dev/null
+++ b/apps/operator/components/TweaksPanel.vue
@@ -0,0 +1,152 @@
+<script setup lang="ts">
+// Floating cosmetic-tweaks panel. Lives in the bottom-right corner. Lets the
+// operator flip theme/density/env without touching settings pages. All three
+// are pure-cosmetic — env in particular is just a colored chip in the topbar,
+// not a real environment switch.
+
+const { state, setTheme, setDensity, setEnv } = useTweaks()
+const open = ref(false)
+</script>
+
+<template>
+  <div class="tweaks-root">
+    <button class="trigger" :class="{ on: open }" type="button" :title="open ? 'Close tweaks' : 'Open tweaks'" @click="open = !open">
+      <UiIcon :name="open ? 'x' : 'shield'" :size="14" />
+    </button>
+
+    <Transition name="tweaks">
+      <div v-if="open" class="panel" role="dialog" aria-label="Cosmetic tweaks">
+        <header>
+          <Eyebrow>Tweaks</Eyebrow>
+          <button class="x" type="button" aria-label="Close" @click="open = false">
+            <UiIcon name="x" :size="11" />
+          </button>
+        </header>
+
+        <section>
+          <label class="row-label">Theme</label>
+          <div class="seg">
+            <button :class="{ on: state.theme === 'dark' }" type="button" @click="setTheme('dark')">Dark</button>
+            <button :class="{ on: state.theme === 'light' }" type="button" @click="setTheme('light')">Light</button>
+          </div>
+        </section>
+
+        <section>
+          <label class="row-label">Density</label>
+          <div class="seg">
+            <button :class="{ on: state.density === 'comfy' }" type="button" @click="setDensity('comfy')">Comfy</button>
+            <button :class="{ on: state.density === 'compact' }" type="button" @click="setDensity('compact')">Compact</button>
+          </div>
+        </section>
+
+        <section>
+          <label class="row-label">Env badge</label>
+          <div class="seg three">
+            <button :class="{ on: state.env === 'prod' }" type="button" @click="setEnv('prod')">PROD</button>
+            <button :class="{ on: state.env === 'staging' }" type="button" @click="setEnv('staging')">STAGING</button>
+            <button :class="{ on: state.env === 'dev' }" type="button" @click="setEnv('dev')">DEV</button>
+          </div>
+        </section>
+
+        <footer>
+          <Mono dim>// cosmetic only — saved to localStorage</Mono>
+        </footer>
+      </div>
+    </Transition>
+  </div>
+</template>
+
+<style scoped>
+.tweaks-root {
+  position: fixed;
+  right: 16px;
+  bottom: 16px;
+  z-index: 50;
+}
+
+.trigger {
+  width: 34px;
+  height: 34px;
+  border-radius: 999px;
+  border: 1px solid var(--border);
+  background: var(--surface);
+  color: var(--text-dim);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
+}
+.trigger:hover { color: var(--text); border-color: var(--border-hi); }
+.trigger.on { background: var(--text); color: var(--bg); border-color: var(--text); }
+
+.panel {
+  position: absolute;
+  right: 0;
+  bottom: 44px;
+  width: 260px;
+  background: var(--elevated);
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  padding: 12px;
+  display: flex;
+  flex-direction: column;
+  gap: 12px;
+  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.32);
+}
+
+header { display: flex; justify-content: space-between; align-items: center; }
+.x {
+  width: 22px;
+  height: 22px;
+  border: 0;
+  background: transparent;
+  color: var(--text-mute);
+  border-radius: 6px;
+  cursor: pointer;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+.x:hover { background: var(--surface); color: var(--text); }
+
+section { display: flex; flex-direction: column; gap: 6px; }
+.row-label {
+  font-family: var(--font-mono);
+  font-size: 10px;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+  color: var(--text-mute);
+  font-weight: 500;
+}
+
+.seg {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 4px;
+  padding: 3px;
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 7px;
+}
+.seg.three { grid-template-columns: 1fr 1fr 1fr; }
+.seg button {
+  appearance: none;
+  border: 0;
+  background: transparent;
+  color: var(--text-dim);
+  font-family: inherit;
+  font-size: 12px;
+  font-weight: 500;
+  padding: 6px 8px;
+  border-radius: 5px;
+  cursor: pointer;
+}
+.seg button:hover { color: var(--text); }
+.seg button.on { background: var(--text); color: var(--bg); }
+
+footer { padding-top: 4px; border-top: 1px dashed var(--border); }
+
+.tweaks-enter-active, .tweaks-leave-active { transition: opacity 0.12s, transform 0.12s; }
+.tweaks-enter-from, .tweaks-leave-to { opacity: 0; transform: translateY(4px); }
+</style>
diff --git a/apps/operator/composables/useCommandPalette.ts b/apps/operator/composables/useCommandPalette.ts
new file mode 100644
index 0000000..16f7107
--- /dev/null
+++ b/apps/operator/composables/useCommandPalette.ts
@@ -0,0 +1,19 @@
+// Shared open/close state for the ⌘K command palette. The trigger lives on
+// the topbar and on the global keyboard shortcut handler, while the rendered
+// panel lives in the default layout — they all read/write the same ref via
+// this composable.
+
+const isOpen = ref(false)
+
+export const useCommandPalette = () => ({
+  isOpen,
+  open: () => {
+    isOpen.value = true
+  },
+  close: () => {
+    isOpen.value = false
+  },
+  toggle: () => {
+    isOpen.value = !isOpen.value
+  },
+})
diff --git a/apps/operator/composables/useImpersonation.ts b/apps/operator/composables/useImpersonation.ts
new file mode 100644
index 0000000..96670e2
--- /dev/null
+++ b/apps/operator/composables/useImpersonation.ts
@@ -0,0 +1,34 @@
+// Visual-only impersonation state. Real impersonation requires an OAuth
+// on-behalf-of grant or admin-impersonation token endpoint; this composable
+// just tracks whether the modal is open + which tenant we're "viewing" so the
+// red banner and topbar warning surface render correctly. Tracked as a
+// follow-up in OPERATOR-PLAN.md.
+
+import type { Tenant } from '~/types/tenant'
+
+const candidate = ref<Tenant | null>(null) // shown in the confirm modal
+const active = ref<Tenant | null>(null) // shown in the persistent banner
+const asUser = ref<string>('first-user@example.com')
+
+export const useImpersonation = () => ({
+  candidate,
+  active,
+  asUser,
+  open: (tenant: Tenant) => {
+    candidate.value = tenant
+  },
+  cancel: () => {
+    candidate.value = null
+  },
+  confirm: (reason: string, userLabel?: string) => {
+    if (!candidate.value) return
+    active.value = candidate.value
+    asUser.value = userLabel ?? asUser.value
+    candidate.value = null
+    // eslint-disable-next-line no-console
+    console.log('[impersonation] entered', { tenant: active.value.slug, reason, asUser: asUser.value })
+  },
+  exit: () => {
+    active.value = null
+  },
+})
diff --git a/apps/operator/composables/useIncidentModal.ts b/apps/operator/composables/useIncidentModal.ts
new file mode 100644
index 0000000..5ea31d1
--- /dev/null
+++ b/apps/operator/composables/useIncidentModal.ts
@@ -0,0 +1,11 @@
+const isOpen = ref(false)
+
+export const useIncidentModal = () => ({
+  isOpen,
+  open: () => {
+    isOpen.value = true
+  },
+  close: () => {
+    isOpen.value = false
+  },
+})
diff --git a/apps/operator/composables/useTweaks.ts b/apps/operator/composables/useTweaks.ts
new file mode 100644
index 0000000..7b9bf69
--- /dev/null
+++ b/apps/operator/composables/useTweaks.ts
@@ -0,0 +1,69 @@
+// Cosmetic tweaks for the operator shell — theme (dark/light), density
+// (comfy/compact), env badge (prod/staging/dev). Persisted in localStorage so
+// the choices survive page reloads. The values are applied to <html> as
+// data-* attributes; tokens.css picks them up via selector overrides.
+
+export type ThemeMode = 'dark' | 'light'
+export type Density = 'comfy' | 'compact'
+export type Env = 'prod' | 'staging' | 'dev'
+
+interface TweakState {
+  theme: ThemeMode
+  density: Density
+  env: Env
+}
+
+const STORAGE_KEY = 'dezky-operator-tweaks'
+
+const DEFAULTS: TweakState = { theme: 'dark', density: 'comfy', env: 'dev' }
+
+const state = ref<TweakState>({ ...DEFAULTS })
+const hydrated = ref(false)
+
+function apply() {
+  if (!import.meta.client) return
+  const root = document.documentElement
+  root.setAttribute('data-theme', state.value.theme)
+  root.setAttribute('data-density', state.value.density)
+}
+
+function persist() {
+  if (!import.meta.client) return
+  try {
+    localStorage.setItem(STORAGE_KEY, JSON.stringify(state.value))
+  } catch {
+    // localStorage can throw in private mode; tweaks are cosmetic so swallow.
+  }
+}
+
+function hydrate() {
+  if (!import.meta.client || hydrated.value) return
+  try {
+    const raw = localStorage.getItem(STORAGE_KEY)
+    if (raw) {
+      const parsed = JSON.parse(raw) as Partial<TweakState>
+      state.value = { ...DEFAULTS, ...parsed }
+    }
+  } catch {
+    // ignore corrupt JSON
+  }
+  apply()
+  hydrated.value = true
+}
+
+export const useTweaks = () => {
+  if (import.meta.client) hydrate()
+
+  function set<K extends keyof TweakState>(key: K, value: TweakState[K]) {
+    state.value = { ...state.value, [key]: value }
+    apply()
+    persist()
+  }
+
+  return {
+    state,
+    setTheme: (v: ThemeMode) => set('theme', v),
+    setDensity: (v: Density) => set('density', v),
+    setEnv: (v: Env) => set('env', v),
+  }
+}
diff --git a/apps/operator/layouts/default.vue b/apps/operator/layouts/default.vue
index 50732b1..21c254b 100644
--- a/apps/operator/layouts/default.vue
+++ b/apps/operator/layouts/default.vue
@@ -5,6 +5,9 @@
 
 const route = useRoute()
 const { toggle } = useSidebar()
+const { toggle: togglePalette } = useCommandPalette()
+// Touch useTweaks so the persisted theme/density hydrate on first paint.
+useTweaks()
 
 // Derive the active nav row from the route. Matches OpSidebar's `id` keys.
 const currentNav = computed(() => {
@@ -24,13 +27,17 @@ const currentNav = computed(() => {
   return ''
 })
 
-// Keyboard shortcut: ⌘[ toggles sidebar. ⌘K palette lands in O.8.
+// Keyboard shortcuts: ⌘[ toggles sidebar, ⌘K opens the command palette.
 onMounted(() => {
   const onKey = (e: KeyboardEvent) => {
     if ((e.metaKey || e.ctrlKey) && e.key === '[') {
       e.preventDefault()
       toggle()
     }
+    if ((e.metaKey || e.ctrlKey) && e.key.toLowerCase() === 'k') {
+      e.preventDefault()
+      togglePalette()
+    }
   }
   document.addEventListener('keydown', onKey)
   onBeforeUnmount(() => document.removeEventListener('keydown', onKey))
@@ -39,23 +46,32 @@ onMounted(() => {
 
 <template>
   <div class="shell">
-    <OpSidebar :current="currentNav" />
-    <main>
-      <OpTopbar />
-      <div class="content">
-        <slot />
-      </div>
-    </main>
+    <ImpersonationBanner />
+    <div class="cols">
+      <OpSidebar :current="currentNav" />
+      <main>
+        <OpTopbar />
+        <div class="content">
+          <slot />
+        </div>
+      </main>
+    </div>
+    <CommandPalette />
+    <ImpersonationModal />
+    <IncidentModal />
+    <TweaksPanel />
   </div>
 </template>
 
 <style scoped>
 .shell {
   display: flex;
+  flex-direction: column;
   min-height: 100vh;
   background: var(--bg);
   color: var(--text);
 }
+.cols { display: flex; flex: 1; min-height: 0; }
 
 main { flex: 1; min-width: 0; display: flex; flex-direction: column; }
 .content { flex: 1; min-width: 0; overflow-y: auto; }
diff --git a/apps/operator/pages/index.vue b/apps/operator/pages/index.vue
index 768f8c3..ae160fa 100644
--- a/apps/operator/pages/index.vue
+++ b/apps/operator/pages/index.vue
@@ -8,6 +8,8 @@ const { data: tenants, pending: tp, refresh: rT } = await useFetch<Tenant[]>('/a
 const { data: partners, pending: pp, refresh: rP } = await useFetch<Partner[]>('/api/partners', { default: () => [] })
 const { data: users, pending: up, refresh: rU } = await useFetch<PlatformUser[]>('/api/users', { default: () => [] })
 
+const { open: openIncident } = useIncidentModal()
+
 const pending = computed(() => tp.value || pp.value || up.value)
 
 async function refresh() {
@@ -63,7 +65,7 @@ function fmtDate(d: string) {
     </PageHeader>
 
     <div class="stage">
-      <button v-if="incidentActive" class="incident" type="button">
+      <button v-if="incidentActive" class="incident" type="button" @click="openIncident">
         <span class="pill">
           <span class="dot" />
           {{ INCIDENT.severity }} · ACTIVE
diff --git a/apps/operator/pages/infrastructure.vue b/apps/operator/pages/infrastructure.vue
index 4615bca..62af2df 100644
--- a/apps/operator/pages/infrastructure.vue
+++ b/apps/operator/pages/infrastructure.vue
@@ -3,6 +3,7 @@ import { SERVICES, INCIDENT, type PlatformService } from '~/data/fixtures'
 
 const degradedCount = computed(() => SERVICES.filter((s) => s.status !== 'ok').length)
 const incidentActive = computed(() => degradedCount.value > 0)
+const { open: openIncident } = useIncidentModal()
 
 function tone(s: PlatformService): 'ok' | 'warn' | 'bad' {
   return s.status
@@ -41,7 +42,7 @@ function label(s: PlatformService) {
           <div class="title">{{ INCIDENT.title }}</div>
           <div class="sub">Started {{ INCIDENT.started }} · IC: {{ INCIDENT.ic }}</div>
         </div>
-        <UiButton variant="primary" disabled>Open incident</UiButton>
+        <UiButton variant="primary" @click="openIncident">Open incident</UiButton>
       </div>
 
       <div class="grid">
diff --git a/apps/operator/pages/tenants/[slug].vue b/apps/operator/pages/tenants/[slug].vue
index 62c4dc8..0519782 100644
--- a/apps/operator/pages/tenants/[slug].vue
+++ b/apps/operator/pages/tenants/[slug].vue
@@ -10,6 +10,8 @@ const { data: tenant, refresh: refreshTenant } = await useFetch<Tenant>(() => `/
 
 const activeTab = ref<'overview' | 'users' | 'resources' | 'billing' | 'audit' | 'support' | 'danger'>('overview')
 
+const impersonate = useImpersonation()
+
 // Lazy-fetch users only when the tab is opened.
 const { data: users, refresh: refreshUsers } = useLazyFetch<TenantUser[]>(
   () => `/api/tenants/${slug.value}/users`,
@@ -97,6 +99,10 @@ async function reconcile() {
       <template #actions>
         <Badge :tone="STATUS_TONE[tenant.status]" dot>{{ tenant.status }}</Badge>
         <Badge tone="neutral">{{ tenant.plan }}</Badge>
+        <UiButton variant="secondary" @click="impersonate.open(tenant)">
+          <template #leading><UiIcon name="key" :size="13" /></template>
+          Impersonate
+        </UiButton>
         <UiButton variant="secondary">
           <template #leading><UiIcon name="external" :size="13" /></template>
           Open workspace
diff --git a/docs/OPERATOR-PLAN.md b/docs/OPERATOR-PLAN.md
index e34b360..243c1bf 100644
--- a/docs/OPERATOR-PLAN.md
+++ b/docs/OPERATOR-PLAN.md
@@ -454,16 +454,25 @@ forward as bearer to platform-api.
       `components/OpPlaceholder.vue`, `server/api/users/index.get.ts`,
       `types/user.ts`.
 
-### O.8 · Interactions
+### O.8 · Interactions ✓
 
-- [ ] `CommandPalette.vue` — ⌘K opens, fuzzy search over tenants + partners
-      + flags + nav items + actions
-- [ ] `ImpersonationModal.vue` — visual stub with reason field, Demo-only
-      badge, no-op confirm + toast
-- [ ] `ImpersonationBanner.vue` — top banner shown when impersonating
-- [ ] `IncidentModal.vue` — mock incident render
-- [ ] `TweaksPanel.vue` — theme (light/dark), density (comfy/compact),
-      env (prod/staging/dev cosmetic switch)
+- [x] `CommandPalette.vue` + `useCommandPalette` — ⌘K opens, searches real
+      tenants/partners + mock flags + nav items + actions. Arrow keys + Enter
+      navigate, Escape/backdrop close.
+- [x] `ImpersonationModal.vue` + `useImpersonation` — confirm modal with
+      reason field, opens from tenant detail (`Impersonate` action) and from
+      the palette (`Impersonate user…` action). Stub — no real OBO token is
+      minted. Follow-up to wire OAuth Token Exchange remains.
+- [x] `ImpersonationBanner.vue` — full-width red banner at the top of the
+      shell, persists until `Exit impersonation` is clicked.
+- [x] `IncidentModal.vue` + `useIncidentModal` — opens from the Overview and
+      Infrastructure incident banners, renders mock `INCIDENT` data
+      (metrics + timeline + draft composer).
+- [x] `TweaksPanel.vue` + `useTweaks` — floating bottom-right panel. Theme
+      (dark/light), density (comfy/compact), env badge (prod/staging/dev).
+      Choices persist to localStorage, apply via `[data-theme]` / `[data-density]`
+      overrides in tokens.css.
+- [x] Layout wires ⌘K + ⌘[ globally. Topbar reads env from `useTweaks`.
 
 ### O.9 · Verification