feat(app): new tabs styling (#15284)

Co-authored-by: David Hill <iamdavidhill@gmail.com>

packages/app/src/components/session/session-sortable-tab.tsx

@@ -46,6 +46,7 @@ export function SortableTab(props: { tab: string; onTabClose: (tab: string) => v
               title={language.t("common.closeTab")}
               keybind={command.keybind("tab.close")}
               placement="bottom"
+              gutter={10}
             >
               <IconButton
                 icon="close-small"

packages/app/src/pages/session/review-tab.tsx

@@ -1,5 +1,4 @@
 import { createEffect, on, onCleanup, type JSX } from "solid-js"
-import { createStore } from "solid-js/store"
 import type { FileDiff } from "@opencode-ai/sdk/v2"
 import { SessionReview } from "@opencode-ai/ui/session-review"
 import type { SelectedLineRange } from "@/context/file"
@@ -31,38 +30,8 @@ export interface SessionReviewTabProps {
 }
 
 export function StickyAddButton(props: { children: JSX.Element }) {
-  const [state, setState] = createStore({ stuck: false })
-  let button: HTMLDivElement | undefined
-
-  createEffect(() => {
-    const node = button
-    if (!node) return
-
-    const scroll = node.parentElement
-    if (!scroll) return
-
-    const handler = () => {
-      const rect = node.getBoundingClientRect()
-      const scrollRect = scroll.getBoundingClientRect()
-      setState("stuck", rect.right >= scrollRect.right && scroll.scrollWidth > scroll.clientWidth)
-    }
-
-    scroll.addEventListener("scroll", handler, { passive: true })
-    const observer = new ResizeObserver(handler)
-    observer.observe(scroll)
-    handler()
-    onCleanup(() => {
-      scroll.removeEventListener("scroll", handler)
-      observer.disconnect()
-    })
-  })
-
   return (
-    <div
-      ref={button}
-      class="bg-background-base h-full shrink-0 sticky right-0 z-10 flex items-center justify-center border-b border-border-weak-base px-3"
-      classList={{ "border-l": state.stuck }}
-    >
+    <div class="bg-background-stronger h-full shrink-0 sticky right-0 z-10 flex items-center justify-center pr-3">
       {props.children}
     </div>
   )

packages/app/src/pages/session/session-side-panel.tsx

@@ -219,13 +219,11 @@ export function SessionSidePanel(props: {
                     }}
                   >
                     <Show when={reviewTab()}>
-                      <Tabs.Trigger value="review" classes={{ button: "!pl-6" }}>
+                      <Tabs.Trigger value="review">
                         <div class="flex items-center gap-1.5">
                           <div>{language.t("session.tab.review")}</div>
                           <Show when={hasReview()}>
-                            <div class="text-12-medium text-text-strong h-4 px-2 flex flex-col items-center justify-center rounded-full bg-surface-base">
-                              {reviewCount()}
-                            </div>
+                            <div>{reviewCount()}</div>
                           </Show>
                         </div>
                       </Tabs.Trigger>
@@ -234,7 +232,7 @@ export function SessionSidePanel(props: {
                       <Tabs.Trigger
                         value="context"
                         closeButton={
-                          <Tooltip value={language.t("common.closeTab")} placement="bottom">
+                          <Tooltip value={language.t("common.closeTab")} placement="bottom" gutter={10}>
                             <IconButton
                               icon="close-small"
                               variant="ghost"
@@ -266,6 +264,7 @@ export function SessionSidePanel(props: {
                           icon="plus-small"
                           variant="ghost"
                           iconSize="large"
+                          class="!rounded-md"
                           onClick={() => dialog.show(() => <DialogSelectFile mode="files" onOpenFile={showAllFiles} />)}
                           aria-label={language.t("command.file.open")}
                         />
@@ -312,7 +311,7 @@ export function SessionSidePanel(props: {
                   {(tab) => {
                     const path = createMemo(() => file.pathFromTab(tab))
                     return (
-                      <div class="relative px-6 h-12 flex items-center bg-background-stronger border-x border-border-weak-base border-b border-b-transparent">
+                      <div data-component="tabs-drag-preview">
                         <Show when={path()}>{(p) => <FileVisual active path={p()} />}</Show>
                       </div>
                     )