style(layout): borderless WorkspaceSwitcher with hover/open background; fix avatar jump

Matches the crewli-starter SoT and fixes the recurring collapse jump at
its root cause. The prior structures left a residual avatar shift:
- the original split put the avatar at 24px expanded (wrapper px-4 +
  card p-2) vs 16px collapsed (bare square) — an 8px horizontal jump;
- the interim single-trigger variant used wrapper p-[10px] + trigger
  px-[10px] expanded (~20px) vs justify-center collapsed (16px) — a
  ~4px residual horizontal shift.

Unified both states to a single symmetric structure:

    avatar offset = wrapper px-2 (8px) + trigger p-2 (8px) = 16px

16px from the rail's left edge in BOTH states — identical to the
SidebarHeader brand logo. Because the padding is symmetric (8 + 8 each
side) and the collapsed rail is 64px = 16 + 32 + 16, the left-aligned
avatar is also visually centred when collapsed — no justify-center,
no px swap, no horizontal shift; constant vertical padding, no vertical
shift. The jump is gone at the root.

Borderless: the trigger has NO border in any state (the prior is-open
border is dropped per the starter screenshots). The only divider is the
wrapper's border-t between the switcher and the nav. The grey
background is the sole fill — transparent at rest, grey on hover, and
grey while the popover is open (isOpen wired to Popover @show/@hide).
The trigger's p-2 gives the grey background generous padding around the
avatar+text, matching the starter's hover treatment, and since it is
the button's own background it never moves the content.

Specs reworked: trigger p-2 identical across states (no px swap / no
justify-center — the no-jump lock), wrapper carries p-2, trigger is
borderless at rest AND while open, open-state grey background applies
on @show and clears on @hide. Single-.trigger / rounded-lg / collapsed-
hides-meta+chev / sub-line specs retained.

Suite delta: 571 → 571 (specs reworked, count unchanged). vue-tsc
clean. Scoped ESLint clean (0 errors). Desktop only.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/app/src/components-v2/layout/WorkspaceSwitcher.vue

@@ -161,43 +161,41 @@ function inviteUser(): void {
 
 <template>
   <!--
-    Crewli-starter-faithful structure (P6-styling-switcher-sub follow-up).
+    Unified borderless structure (P6-styling-switcher-hover, crewli-starter
-    ONE `.trigger` button renders in BOTH states — collapsing only hides
+    SoT). ONE `.trigger` button renders in BOTH states; collapsing only
-    `.meta` + `.chev` (v-if) and recentres the lone avatar. This is the
+    hides `.meta` + `.chev` (v-if). The button keeps the SAME padding in
-    key fix for the vertical "avatar jump": the prior version swapped
+    both states — this is what kills the avatar jump:
-    between two separate <button> elements (a bare collapsed button vs a
-    padded expanded trigger) with different box models, so the avatar's
-    distance from the rail bottom differed by ~6px and visibly jumped on
-    collapse. With a single trigger and constant vertical padding
-    (`py-2` always), the avatar stays put.
 
-    Wrapper: `border-t` separator + `p-[10px]` ALWAYS (constant vertical
+    avatar offset = wrapper px-2 (8px) + trigger p-2 (8px) = 16px
-    padding → no jump; matches crewli-starter `.ws-switcher { padding:
-    10px }`). No border around the wrapper itself.
 
-    Centring equation (collapsed): wrapper p-[10px] gives the trigger a
+    16px from the rail's left edge in BOTH collapsed and expanded —
-    44px content width inside the 64px rail; the trigger's `justify-center
+    identical to the SidebarHeader brand logo (px-4). Because the
-    px-0` centres the 32px avatar → 16px from the rail's left edge,
+    horizontal padding is symmetric (8 + 8 each side) and the rail
-    aligned with the SidebarHeader brand logo above (also 16px).
+    collapses to 64px = 16 + 32 (avatar) + 16, the left-aligned avatar
+    is ALSO visually centred when collapsed — no justify-center swap, no
+    horizontal shift. Vertical padding is likewise constant, so no
+    vertical shift either. The earlier 24px-expanded / 16px-collapsed
+    split (and the later px-[10px]/justify-center variant) both left a
+    residual shift; this symmetric structure removes it entirely.
+
+    Borderless: the trigger has NO border in any state (the prior
+    is-open border is dropped per the starter screenshots). The only
+    divider is the wrapper's `border-t` separating the switcher from the
+    nav above. The grey background is the sole fill, on hover OR while
+    the popover is open.
   -->
-  <div class="ws-switcher relative flex-shrink-0 border-t border-[var(--p-content-border-color)] p-[10px]">
+  <div class="ws-switcher relative flex-shrink-0 border-t border-[var(--p-content-border-color)] p-2">
     <!--
-      Trigger — single button for both states (crewli-starter `.trigger`).
+      Trigger — single button for both states. Transparent at rest; grey
-      Resting: transparent border + transparent bg. Hover: grey bg, no
+      on hover; grey KEPT while the popover is open (isOpen, wired to the
-      border. Open (is-open): grey bg KEPT + visible border, persisting
+      Popover @show/@hide). The `p-2` gives the grey background generous
-      until the popover closes — crewli-starter
+      padding around the avatar+text (crewli-starter hover treatment),
-      `.ws-switcher.is-open .trigger { background; border-color }`.
+      and because the background is the button's own bg (not a separate
-      `py-2` is constant; only horizontal padding / justify changes on
+      shifting layer) it never moves the avatar.
-      collapse, so the avatar never shifts vertically.
     -->
     <button
-      class="trigger flex w-full items-center gap-[10px] rounded-lg border bg-transparent py-2 text-[var(--p-text-color)] transition-[background,border-color] duration-150 focus-visible:outline focus-visible:outline-2 focus-visible:outline-[var(--p-primary-color)] focus-visible:outline-offset-2"
+      class="trigger flex w-full items-center gap-[10px] rounded-lg bg-transparent p-2 text-[var(--p-text-color)] transition-colors duration-150 hover:bg-surface-100 dark:hover:bg-surface-800 focus-visible:outline focus-visible:outline-2 focus-visible:outline-[var(--p-primary-color)] focus-visible:outline-offset-2"
-      :class="[
+      :class="{ 'bg-surface-100 dark:bg-surface-800': isOpen }"
-        collapsed ? 'justify-center px-0' : 'px-[10px]',
-        isOpen
-          ? 'is-open border-[var(--p-content-border-color)] bg-[var(--p-content-hover-background)]'
-          : 'border-transparent hover:bg-[var(--p-content-hover-background)]',
-      ]"
       aria-haspopup="true"
       :aria-expanded="isOpen"
       :aria-label="collapsed && current ? `Workspace: ${current.name}` : undefined"

apps/app/src/components-v2/layout/__tests__/WorkspaceSwitcher.spec.ts

@@ -113,10 +113,10 @@ describe('WorkspaceSwitcher', () => {
   })
 
   // -------------------------------------------------------------------------
-  // Crewli-starter-faithful structure: ONE .trigger button in both states.
+  // Unified borderless structure (P6-styling-switcher-hover, crewli-starter
-  // Collapsing hides .meta + .chev and centres the lone avatar; it does NOT
+  // SoT). ONE .trigger button in both states with IDENTICAL padding
-  // swap to a separate bare button (that swap caused the vertical avatar
+  // (wrapper p-2 + trigger p-2 = avatar at 16px in both states → no jump).
-  // jump). The avatar square renders inside the same .trigger always.
+  // No border on the trigger; grey background on hover OR while open.
   // -------------------------------------------------------------------------
 
   it('uses a single .trigger button in both states (no element swap on collapse)', () => {
@@ -137,49 +137,68 @@ describe('WorkspaceSwitcher', () => {
     expect(wrapper.find('.trigger').classes()).toContain('rounded-lg')
   })
 
-  it('expanded trigger has no justify-center (avatar + meta anchored on the left)', () => {
+  it('trigger padding (p-2) is identical across states — avatar stays at 16px (no jump)', () => {
-    const wrapper = mountSwitcher({ collapsed: false })
+    // The jump fix: the trigger keeps p-2 in BOTH states (no px swap, no
+    // justify-center). With the wrapper at p-2, the avatar offset is a
+    // constant 8 + 8 = 16px from the rail edge — no horizontal OR vertical
+    // shift on collapse.
+    const expanded = mountSwitcher({ collapsed: false })
+    const collapsed = mountSwitcher({ collapsed: true })
 
-    expect(wrapper.find('.trigger').classes()).not.toContain('justify-center')
+    expect(expanded.find('.trigger').classes()).toContain('p-2')
+    expect(collapsed.find('.trigger').classes()).toContain('p-2')
+
+    // No state-conditional horizontal padding / centring remains.
+    for (const w of [expanded, collapsed]) {
+      const cls = w.find('.trigger').classes()
+
+      expect(cls).not.toContain('justify-center')
+      expect(cls).not.toContain('px-0')
+      expect(cls).not.toContain('px-[10px]')
+    }
+
+    // Wrapper carries p-2 too (the other half of the 16px offset).
+    expect(expanded.find('.ws-switcher').classes()).toContain('p-2')
   })
 
-  it('collapsed trigger centres the lone avatar and hides .meta + .chev', () => {
+  it('collapsed hides .meta + .chev; the avatar stays in the same p-2 trigger', () => {
     const wrapper = mountSwitcher({ collapsed: true })
 
     const trigger = wrapper.find('.trigger')
 
-    expect(trigger.classes()).toContain('justify-center')
     expect(wrapper.find('.meta').exists()).toBe(false)
     expect(wrapper.find('.chev').exists()).toBe(false)
     expect(trigger.find('.ws-logo').exists()).toBe(true)
   })
 
-  it('trigger vertical padding (py-2) is constant across states (no avatar jump)', () => {
+  it('the trigger is borderless in every state (no card outline)', async () => {
-    // The vertical-jump fix: py-2 must be present in BOTH states so the
-    // avatar's vertical box is identical. Only horizontal padding/justify
-    // changes on collapse.
-    const expanded = mountSwitcher({ collapsed: false })
-    const collapsed = mountSwitcher({ collapsed: true })
-
-    expect(expanded.find('.trigger').classes()).toContain('py-2')
-    expect(collapsed.find('.trigger').classes()).toContain('py-2')
-  })
-
-  it('open state keeps the trigger background + border (is-open persists hover bg)', async () => {
     const wrapper = mountSwitcher({ collapsed: false })
 
-    // Resting: transparent border, no is-open marker.
+    const restingHasBorder = wrapper.find('.trigger').classes().some(c => c.startsWith('border'))
-    expect(wrapper.find('.trigger').classes()).toContain('border-transparent')
-    expect(wrapper.find('.trigger').classes()).not.toContain('is-open')
 
-    // Simulate the Popover @show -> isOpen=true.
+    expect(restingHasBorder).toBe(false)
+
+    // Still borderless while open — the grey background is the only fill.
     await wrapper.findComponent({ name: 'Popover' }).vm.$emit('show')
 
-    const trigger = wrapper.find('.trigger')
+    const openHasBorder = wrapper.find('.trigger').classes().some(c => c.startsWith('border'))
 
-    expect(trigger.classes()).toContain('is-open')
+    expect(openHasBorder).toBe(false)
-    expect(trigger.classes()).toContain('bg-[var(--p-content-hover-background)]')
+  })
-    expect(trigger.classes()).toContain('border-[var(--p-content-border-color)]')
+
+  it('open state applies the grey background and keeps it until hide', async () => {
+    const wrapper = mountSwitcher({ collapsed: false })
+
+    // Resting: no open-state background marker.
+    expect(wrapper.find('.trigger').classes()).not.toContain('bg-surface-100')
+
+    // @show -> isOpen=true -> grey background applied.
+    await wrapper.findComponent({ name: 'Popover' }).vm.$emit('show')
+    expect(wrapper.find('.trigger').classes()).toContain('bg-surface-100')
+
+    // @hide -> isOpen=false -> background removed.
+    await wrapper.findComponent({ name: 'Popover' }).vm.$emit('hide')
+    expect(wrapper.find('.trigger').classes()).not.toContain('bg-surface-100')
   })
 
   // -------------------------------------------------------------------------