diff --git a/apps/ui/skills/coss/references/primitives/alert-dialog.md b/apps/ui/skills/coss/references/primitives/alert-dialog.md
index 2d09bfecf..70f825060 100644
--- a/apps/ui/skills/coss/references/primitives/alert-dialog.md
+++ b/apps/ui/skills/coss/references/primitives/alert-dialog.md
@@ -62,19 +62,68 @@ import {
 </AlertDialog>
 ```
 
+`AlertDialogClose` closes the dialog as soon as it is clicked, so use it as the confirm only when the action is synchronous. For async work, see **Async confirmation** below.
+
 ## Patterns from coss particles
 
 - **Portal forwarding**: optional `portalProps` on `AlertDialogPopup` → Base UI `AlertDialog.Portal` (`keepMounted`, `container`, …). See [portal-props.md](../portal-props.md).
 - **Section structure**: keep `AlertDialogHeader` and `AlertDialogFooter` as direct sections of `AlertDialogPopup` (there is no `AlertDialogPanel`; add a `div` or fragment between them only if you need extra body content).
-- **Action composition**: use `AlertDialogClose render={<Button ... />}` for cancel/confirm actions to preserve button semantics and styling.
+- **Action composition**: use `AlertDialogClose render={<Button ... />}` for Cancel and for synchronous confirms to preserve button semantics and styling.
 - **Destructive affordance**: pair destructive trigger/confirm variants (`destructive-outline`, `destructive`) for clear risk signaling.
 - **Footer variants**: use `AlertDialogFooter variant="bare"` when border/background framing should be removed.
 - **Close confirmation chain**: for unsaved changes in broader workflows, pair with dialog flows like `p-dialog-4`.
 
+### Key patterns
+
+Async confirmation (the dialog stays open until the mutation settles):
+
+```tsx
+const [open, setOpen] = useState(false)
+const [isPending, setIsPending] = useState(false)
+
+async function handleDelete() {
+  setIsPending(true)
+  try {
+    await deleteAccount()
+    setOpen(false)
+  } catch {
+    // Keep the dialog open so the user can retry; surface the error (e.g. a toast).
+  } finally {
+    setIsPending(false)
+  }
+}
+
+<AlertDialog onOpenChange={setOpen} open={open}>
+  <AlertDialogTrigger render={<Button variant="destructive-outline" />}>
+    Delete Account
+  </AlertDialogTrigger>
+  <AlertDialogPopup>
+    <AlertDialogHeader>
+      <AlertDialogTitle>Are you absolutely sure?</AlertDialogTitle>
+      <AlertDialogDescription>
+        This action cannot be undone.
+      </AlertDialogDescription>
+    </AlertDialogHeader>
+    <AlertDialogFooter>
+      <AlertDialogClose render={<Button variant="ghost" />}>Cancel</AlertDialogClose>
+      <Button loading={isPending} onClick={handleDelete} variant="destructive">
+        Delete Account
+      </Button>
+    </AlertDialogFooter>
+  </AlertDialogPopup>
+</AlertDialog>
+```
+
+- The confirm is a plain `Button` (not `AlertDialogClose`) with `loading`, which disables it and shows the spinner while the request runs.
+- Close the dialog from the success path (`setOpen(false)`); on failure keep it open so the user can retry.
+- Cancel stays an `AlertDialogClose` ghost button. Keep Cancel first in source: the footer is `flex-col-reverse` / `sm:flex-row sm:justify-end`, so the confirm renders on the right (or on top when stacked).
+- With a query library, use its pending state (for example `mutation.isPending`) instead of local state.
+
 ## Common pitfalls
 
 - Using AlertDialog as a generic content modal instead of high-risk confirmation UI.
 - Omitting explicit destructive/cancel action distinction.
+- Confirming an async action with `AlertDialogClose`: the dialog closes before the mutation settles, so there is no loading state and nowhere to show a failure.
 - Wrapping dialog sections in extra containers that break built-in layout (use `className="contents"` only when needed).
 - Mixing Dialog/Popover composition APIs without validating this primitive's parts.
 - Skipping focus-return and escape-key verification on real trigger flows.
diff --git a/apps/ui/skills/coss/references/primitives/button.md b/apps/ui/skills/coss/references/primitives/button.md
index 825fd1e10..bac8fd469 100644
--- a/apps/ui/skills/coss/references/primitives/button.md
+++ b/apps/ui/skills/coss/references/primitives/button.md
@@ -99,6 +99,7 @@ Prefer the `loading` prop for typical async actions. Use the composite approach
 
 - Omitting explicit `type` inside forms/dialogs and triggering unintended submit behavior.
 - Using icon-only buttons without `aria-label` on the button.
+- Expecting a disabled button to show a tooltip: `disabled` sets the native attribute plus `pointer-events-none`, so the button gets no hover or focus. Wrap it in a focusable `span` rendered as the `TooltipTrigger` (see [tooltip.md](./tooltip.md)).
 - Rebuilding button state styling with ad-hoc classes instead of variants/sizes.
 - Using `SelectButton` as if it were a general-purpose `Button`; `SelectButton` is a select-flavored trigger helper and should be treated as a `select`/`combobox` pattern.
 
diff --git a/apps/ui/skills/coss/references/primitives/card.md b/apps/ui/skills/coss/references/primitives/card.md
index 40d79b614..ea597a4d6 100644
--- a/apps/ui/skills/coss/references/primitives/card.md
+++ b/apps/ui/skills/coss/references/primitives/card.md
@@ -22,14 +22,23 @@ Manual deps from docs:
 ```tsx
 import {
   Card,
+  CardAction,
   CardDescription,
   CardFooter,
+  CardFrame,
+  CardFrameAction,
+  CardFrameDescription,
+  CardFrameFooter,
+  CardFrameHeader,
+  CardFrameTitle,
   CardHeader,
   CardPanel,
   CardTitle,
 } from "@/components/ui/card"
 ```
 
+`CardPanel` is also exported as `CardContent`.
+
 ## Minimal pattern
 
 ```tsx
@@ -70,16 +79,49 @@ Card with form content:
 
 Keep `CardHeader`, `CardPanel`, and `CardFooter` as direct children of `Card` to preserve built-in spacing and layout.
 
+Put header actions in `CardAction`, a sibling of `CardTitle` and `CardDescription` inside `CardHeader`; it is placed top-right via the header grid.
+
+### CardFrame
+
+`CardFrame` is a muted outer shell with its own header and footer around one or more inner `Card`s (or a `Table variant="card"`). Use it when a section needs a title row, an optional action, and a footnote outside the main surface.
+
+```tsx
+<CardFrame>
+  <CardFrameHeader>
+    <CardFrameTitle>Projects</CardFrameTitle>
+    <CardFrameDescription>Manage your projects</CardFrameDescription>
+    <CardFrameAction>
+      <Button variant="outline">
+        <PlusIcon aria-hidden="true" />
+        Add
+      </Button>
+    </CardFrameAction>
+  </CardFrameHeader>
+  <Card>
+    <CardPanel>Content</CardPanel>
+  </Card>
+  <CardFrameFooter>Footnote or secondary info</CardFrameFooter>
+</CardFrame>
+```
+
+- Keep `CardFrameHeader`, the inner `Card`(s), and `CardFrameFooter` as direct children of `CardFrame`; the frame clips, rounds, and removes shadows on direct `Card` children only.
+- `CardFrameAction` goes inside `CardFrameHeader` as a sibling of the title and description; it sits in the second grid column, vertically centered.
+- Do not use `CardHeader`/`CardFooter` on the frame itself; those belong to the inner `Card`.
+- For tables, render `Table variant="card"` as a direct child of `CardFrame` (see table guide, `p-table-6` through `p-table-8`).
+
 ### More examples
 
-See `p-card-1` through `p-card-8` for various card compositions.
+See `p-card-1` through `p-card-11` for various card compositions.
 
 ## Common pitfalls
 
 - Skipping `CardHeader`/`CardPanel`/`CardFooter` structure in composed cards.
 - Mixing unrelated layout wrappers that break spacing between card sections.
 - Using cards as generic wrappers when `Frame` or plain layout would be clearer.
+- Nesting a `Card` inside another wrapper within `CardFrame`, which skips the frame's clipping and radius rules for direct `Card` children.
 
 ## Useful particle references
 
 - core patterns: `p-card-1`, `p-card-2`, `p-card-3`, `p-card-4`, `p-card-5`, `p-card-6`, `p-card-7`, `p-card-8`
+- `CardFrame` with footer: `p-card-4`; with header: `p-card-5`; header + footer: `p-card-6`, `p-card-7`
+- `CardFrame` with header action: `p-card-11`
diff --git a/apps/ui/skills/coss/references/primitives/drawer.md b/apps/ui/skills/coss/references/primitives/drawer.md
index e48869b21..a7be2a2a6 100644
--- a/apps/ui/skills/coss/references/primitives/drawer.md
+++ b/apps/ui/skills/coss/references/primitives/drawer.md
@@ -87,13 +87,15 @@ Drawer with a visible drag handle:
       {/* Form content */}
     </DrawerPanel>
     <DrawerFooter>
-      <Button>Save</Button>
       <DrawerClose render={<Button variant="ghost" />}>Cancel</DrawerClose>
+      <Button>Save</Button>
     </DrawerFooter>
   </DrawerPopup>
 </Drawer>
 ```
 
+**Footer action order**: write Cancel first and the primary action last. `DrawerFooter` is `flex-col-reverse` on mobile and `sm:flex-row sm:justify-end` from `sm` up, so source order puts the primary action on the right on desktop and on top when stacked. The same applies to `DialogFooter` and `AlertDialogFooter`.
+
 Responsive drawer + dialog (drawer on mobile, dialog on desktop): see `p-drawer-12`.
 
 ### More examples
@@ -104,6 +106,7 @@ See `p-drawer-1` through `p-drawer-13` for inset, straight, scrollable, nested,
 
 - Choosing Sheet for desktop side panels; use Drawer. Use Dialog for centered modal flows.
 - Forgetting responsive switch logic when drawer is mobile-only variant.
+- Putting the primary action before Cancel in `DrawerFooter`; the reversed mobile stack then puts Cancel on top and the primary on the left on desktop.
 - Breaking section layout by putting the whole dialog in a block-level `<form>`; prefer **header outside**, **`Form className="contents"`** around **panel + footer** (see dialog/form skills).
 
 ## Useful particle references
diff --git a/apps/ui/skills/coss/references/primitives/field.md b/apps/ui/skills/coss/references/primitives/field.md
index 9c18e7f9d..dedd6651e 100644
--- a/apps/ui/skills/coss/references/primitives/field.md
+++ b/apps/ui/skills/coss/references/primitives/field.md
@@ -50,17 +50,44 @@ import { Input } from "@/components/ui/input"
 
 ### Key patterns
 
-Required field with error:
+Required field with error (Base UI constraint validation):
 
 ```tsx
 <Field name="email">
-  <FieldLabel>Email *</FieldLabel>
+  <FieldLabel>
+    Email <span className="text-destructive-foreground">*</span>
+  </FieldLabel>
   <Input type="email" required placeholder="name@company.com" />
   <FieldDescription>We'll never share your email.</FieldDescription>
   <FieldError>Please enter a valid email.</FieldError>
 </Field>
 ```
 
+Native constraint attributes (`required`, `type="email"`, `min`, `pattern`, …) are the validation source here: `Field` reads the control's `ValidityState` and `FieldError` renders when it fails. Use this only when the browser constraints are the single source of truth.
+
+Required field with React Hook Form (or another schema/form library):
+
+```tsx
+const { formState: { errors }, handleSubmit, register } = useForm<Values>({
+  resolver: zodResolver(schema),
+})
+
+<form noValidate onSubmit={handleSubmit(onSubmit)}>
+  <Field invalid={!!errors.email} name="email">
+    <FieldLabel>
+      Email <span className="text-destructive-foreground">*</span>
+    </FieldLabel>
+    <Input type="email" {...register("email")} placeholder="name@company.com" />
+    <FieldError>{errors.email?.message}</FieldError>
+  </Field>
+</form>
+```
+
+- Let the library own validation: drop `required` (and other constraint attributes like `min`/`max`/`pattern`) from the control and express them in the schema.
+- Use a plain `<form noValidate>`. Without `noValidate`, the browser's native validation blocks submit and shows its own bubble before `handleSubmit` runs; with it, `type="email"` can stay for the mobile keyboard and autofill.
+- If you wrap the fields in coss `Form` instead: it already sets `noValidate`, but each `Field` inside it still runs native constraint checks on submit (including `type="email"` mismatches) and cancels the submit, focusing the first invalid control, before your `onSubmit` handler fires. Remove every constraint attribute in that case (use `inputMode="email"` for the keyboard).
+- Drive the error state from the library: `invalid` on `Field` and the message as `FieldError` children. The asterisk is visual only; the schema enforces it.
+
 Field wrapping an autocomplete:
 
 ```tsx
@@ -86,6 +113,7 @@ See `p-field-1` through `p-field-9` for required, disabled, error, validity, inp
 
 - Rendering errors detached from the related control, breaking context.
 - Missing `name` in form flows, causing silent submit omissions.
+- Mixing native constraint attributes (`required`, `min`, `pattern`) with React Hook Form or another schema validator; native/Base UI validation runs first and the library's errors never show.
 - Using field wrapper without corresponding label/description/error semantics.
 
 ## Useful particle references
diff --git a/apps/ui/skills/coss/references/primitives/menu.md b/apps/ui/skills/coss/references/primitives/menu.md
index f1be561b9..f1e84112f 100644
--- a/apps/ui/skills/coss/references/primitives/menu.md
+++ b/apps/ui/skills/coss/references/primitives/menu.md
@@ -62,6 +62,31 @@ import {
 
 Use popup positioning props like `align` / `sideOffset` only when a layout needs explicit tuning.
 
+Destructive item with confirmation:
+
+```tsx
+const [confirmOpen, setConfirmOpen] = useState(false)
+
+<>
+  <Menu>
+    <MenuTrigger render={<Button aria-label="Project actions" size="icon" variant="ghost" />}>
+      <EllipsisIcon aria-hidden="true" />
+    </MenuTrigger>
+    <MenuPopup align="end">
+      <MenuItem>Rename</MenuItem>
+      <MenuItem>Duplicate</MenuItem>
+      <MenuSeparator />
+      <MenuItem onClick={() => setConfirmOpen(true)} variant="destructive">
+        Delete
+      </MenuItem>
+    </MenuPopup>
+  </Menu>
+  <AlertDialog onOpenChange={setConfirmOpen} open={confirmOpen}>
+    <AlertDialogPopup>{/* header + footer, see alert-dialog.md */}</AlertDialogPopup>
+  </AlertDialog>
+</>
+```
+
 ## Patterns from coss particles
 
 - **Portal forwarding**: optional `portalProps` on `MenuPopup` → Base UI `Menu.Portal` (`keepMounted`, `container`, …). See [portal-props.md](../portal-props.md).
@@ -72,7 +97,8 @@ Use popup positioning props like `align` / `sideOffset` only when a layout needs
 - Use `MenuCheckboxItem variant="switch"` for toggle-style preferences.
 - Use `MenuRadioGroup` + `MenuRadioItem` with a `defaultValue` when enforcing single-choice selection.
 - Use `MenuShortcut` to display keyboard hints in dense command menus.
-- Use `variant="destructive"` on dangerous actions.
+- Use `variant="destructive"` on dangerous actions, and put them last, after a `MenuSeparator`, so they are visually apart from routine actions and harder to hit by accident.
+- When an item needs confirmation (e.g. Delete), the item only sets state; render the `AlertDialog` (or `Dialog`) as a sibling of `Menu`, controlled by `open` / `onOpenChange`. Never nest the dialog inside `MenuPopup`: the popup unmounts when the menu closes, taking the dialog with it. See `p-dialog-2`.
 - For responsive action menus, keep desktop on `Menu` and switch mobile to `DrawerMenu` / `DrawerMenuTrigger` / `DrawerMenuItem` patterns.
 - In `DrawerMenu` flows, wrap actionable rows with `DrawerClose render={<DrawerMenuItem />}` when selection should dismiss the drawer.
 
@@ -81,6 +107,8 @@ Use popup positioning props like `align` / `sideOffset` only when a layout needs
 - Forgetting `MenuGroup` around grouped structures.
 - Missing submenu pair (`MenuSubTrigger` + `MenuSubPopup`) for nested actions.
 - Mixing navigation and action items without clear close behavior (`closeOnClick`) and semantics.
+- Placing destructive items in the middle of the list or without a separator.
+- Nesting an `AlertDialog`/`Dialog` (or its trigger) inside `MenuPopup` for a confirm step; keep it a sibling of `Menu` driven by state.
 
 ## Useful particle references
 
diff --git a/apps/ui/skills/coss/references/primitives/tooltip.md b/apps/ui/skills/coss/references/primitives/tooltip.md
index ca5d5a834..4e6bd2d47 100644
--- a/apps/ui/skills/coss/references/primitives/tooltip.md
+++ b/apps/ui/skills/coss/references/primitives/tooltip.md
@@ -63,6 +63,22 @@ Tooltip on an icon-only button:
 </Tooltip>
 ```
 
+Tooltip explaining why a button is disabled:
+
+```tsx
+<Tooltip>
+  <TooltipTrigger render={<span className="inline-flex" tabIndex={0} />}>
+    <Button disabled>Publish</Button>
+  </TooltipTrigger>
+  <TooltipPopup>Add a title before publishing</TooltipPopup>
+</Tooltip>
+```
+
+- A disabled `Button` sets the native `disabled` attribute and `pointer-events-none`, so it never receives hover or focus. Putting `TooltipTrigger render={<Button disabled />}` directly on it means the tooltip never opens.
+- Render the trigger as a wrapper `span` instead (`TooltipTrigger` renders a `<button>` by default, which cannot contain another button). Hover passes through the disabled button to the span.
+- `tabIndex={0}` keeps the reason reachable by keyboard, since the disabled button is skipped in tab order. Use `inline-flex` (or `block`/`w-full` for full-width buttons) so the wrapper matches the button's box.
+- When the button becomes enabled, drop the wrapper or render the tooltip only while disabled, so the span does not add an extra tab stop.
+
 Grouped tooltips (shared delay/provider):
 
 ```tsx
@@ -87,6 +103,7 @@ See `p-tooltip-1` through `p-tooltip-3` for basic, grouped, and animated tooltip
 - Placing interactive controls inside tooltip content (tooltip should stay informational).
 - Relying on tooltip as sole label for icon-only controls (still provide accessible name).
 - Using tooltip for long-form content that should be popover/dialog.
+- Attaching a tooltip trigger directly to a disabled button; wrap it in a focusable `span` trigger instead (see above).
 
 ## Useful particle references