tweak(stream-header): collapse peek1/peek2 into single peek snap so one drag reveals both action chips at once

src/app/components/stream-header/StreamHeader.css.ts

@@ -161,16 +161,15 @@ export const segmentDot = recipe({
   },
 });
 
-// Chip row — outer clip-strip. Each row reveals from underneath the
-// curtain when the user drags down to the corresponding peek stage.
+// Chip row — outer clip-strip. Both rows reveal together when the
+// user drags the curtain down to the `peek` snap.
 //
 // The `marginBottom` math is load-bearing for the snap-top
-// calculation: the resting `top` of `peek1`/`peek2` lands the curtain
-// exactly where the next row would have begun, so the breather never
-// "steals" pixels from the next chip's paddingTop. Two different
-// values:
+// calculation: the resting `top` of `peek` lands the curtain exactly
+// where the next row would have begun, so the breather never "steals"
+// pixels from the next chip's paddingTop. Two different values:
 //   - default (chip-to-chip): `CHIP_GAP_PX` — tighter, so the two
-//     pills read as a related pair when both are revealed at peek2.
+//     pills read as a related pair when both are revealed.
 //   - `:last-child` (chip-to-curtain): `CURTAIN_BREATHER_PX` — wider,
 //     so the curtain's rounded top has comfortable air above the
 //     chip pill it lands above.

src/app/components/stream-header/StreamHeader.tsx

@@ -237,7 +237,7 @@ export function StreamHeader({ scrollRef, children, bottomPinned }: StreamHeader
                 iconSrc={Icons.Search}
                 label={t('Search.search')}
                 onClick={openSearch}
-                hidden={curtain.snap === 'closed'}
+                hidden={curtain.snap !== 'peek'}
               />
             </div>
             <div className={css.chipRow}>
@@ -245,7 +245,7 @@ export function StreamHeader({ scrollRef, children, bottomPinned }: StreamHeader
                 iconSrc={Icons.Plus}
                 label={t('Direct.create_chat')}
                 onClick={openChat}
-                hidden={curtain.snap !== 'peek2'}
+                hidden={curtain.snap !== 'peek'}
               />
             </div>
           </>

src/app/components/stream-header/geometry.ts

@@ -10,8 +10,8 @@
 //
 // Snap stops (curtain.top, px):
 //   closed       = TABS_ROW_PX
-//   peek1        = TABS_ROW_PX + CHIP_ROW_PX
-//   peek2        = TABS_ROW_PX + CHIP_ROW_PX * 2
+//   peek         = TABS_ROW_PX + 2·CHIP_ROW_PX + CHIP_GAP_PX
+//                              + CURTAIN_BREATHER_PX
 //   form:*       = TABS_ROW_PX + formHeight + CURTAIN_BREATHER_PX
 // ────────────────────────────────────────────────────────────────────
 

src/app/components/stream-header/useCurtainGesture.ts

@@ -7,7 +7,7 @@ import {
   DIRECTION_DEAD_ZONE_PX,
   RUBBER_BAND,
 } from './geometry';
-import { CurtainSnap, isFormSnap, isPeekSnap } from './useCurtainState';
+import { CurtainSnap, isFormSnap } from './useCurtainState';
 
 type Args = {
   // The scroll viewport that hosts the chat list inside the curtain.
@@ -29,9 +29,9 @@ type Args = {
 // Touch-gesture driver for the curtain. Native-only: on web/PC the
 // listeners aren't attached at all.
 //
-// Peek path: drag down from `closed`/`peek1`/`peek2` rubber-bands the
-// live delta and on release commits to the nearest stage. Drag UP from
-// peek retreats toward `closed` via the same threshold logic.
+// Peek path: drag down from `closed` rubber-bands the live delta and
+// on release past the threshold commits to `peek` (both chips
+// revealed in one motion). Drag UP from `peek` retreats to `closed`.
 //
 // Form-close path: drag UP from a form snap tracks the finger 1:1; on
 // release past `ACTIVE_CLOSE_THRESHOLD_PX` commits to `closed`.
@@ -92,14 +92,14 @@ export function useCurtainGesture({ scrollRef, snap, setLiveDrag, commit }: Args
         if (Math.abs(delta) < DIRECTION_DEAD_ZONE_PX) return;
         direction = delta > 0 ? 'down' : 'up';
 
-        // Direction guards: nothing higher than closed; nothing lower
-        // than peek2; form snaps only close (up).
+        // Direction guards: nothing higher than `closed`; nothing
+        // lower than `peek`; form snaps only close (up).
         if (currentSnap === 'closed' && direction === 'up') {
           startY = null;
           direction = null;
           return;
         }
-        if (currentSnap === 'peek2' && direction === 'down') {
+        if (currentSnap === 'peek' && direction === 'down') {
           startY = null;
           direction = null;
           return;
@@ -143,17 +143,15 @@ export function useCurtainGesture({ scrollRef, snap, setLiveDrag, commit }: Args
         if (Math.abs(lastDelta) >= ACTIVE_CLOSE_THRESHOLD_PX) {
           next = 'closed';
         }
-      } else if (isPeekSnap(currentSnap) || currentSnap === 'closed') {
-        const progressStages = lastDelta / CHIP_ROW_PX;
-        let baseStage = 0;
-        if (currentSnap === 'peek1') baseStage = 1;
-        else if (currentSnap === 'peek2') baseStage = 2;
-        if (Math.abs(progressStages) >= COMMIT_THRESHOLD) {
-          const target = Math.max(0, Math.min(2, Math.round(baseStage + progressStages)));
-          let resolved: CurtainSnap = 'closed';
-          if (target === 1) resolved = 'peek1';
-          else if (target === 2) resolved = 'peek2';
-          next = resolved;
+      } else {
+        // Single-stage peek toggle. Threshold is COMMIT_THRESHOLD of a
+        // chip-row worth of rubber-banded drag — same touch effort as
+        // the old per-stage commit, but now flips the WHOLE peek in
+        // one motion (`closed` ⇄ `peek`).
+        const progress = lastDelta / CHIP_ROW_PX;
+        if (Math.abs(progress) >= COMMIT_THRESHOLD) {
+          if (currentSnap === 'closed' && progress > 0) next = 'peek';
+          else if (currentSnap === 'peek' && progress < 0) next = 'closed';
         }
       }
 

src/app/components/stream-header/useCurtainState.ts

@@ -13,8 +13,7 @@ import {
 // is no separate «active vs peek» mode flag — the snap encodes both.
 export type CurtainSnap =
   | 'closed' // curtain flush under tabs row; nothing peeking
-  | 'peek1' // search chip revealed
-  | 'peek2' // search + new-chat chips revealed
+  | 'peek' // both action chips (search + new chat) revealed
   | 'form-search' // full search form revealed
   | 'form-chat'; // full new-chat form revealed
 
@@ -23,8 +22,7 @@ export const isFormSnap = (
 ): snap is 'form-search' | 'form-chat' =>
   snap === 'form-search' || snap === 'form-chat';
 
-export const isPeekSnap = (snap: CurtainSnap): snap is 'peek1' | 'peek2' =>
-  snap === 'peek1' || snap === 'peek2';
+export const isPeekSnap = (snap: CurtainSnap): snap is 'peek' => snap === 'peek';
 
 // Form kind currently rendered in the header. Stays set during the
 // curtain's close transition so the form has content to slide behind;
@@ -81,9 +79,7 @@ export function snapTopPx(snap: CurtainSnap, formH: number | null): number {
   switch (snap) {
     case 'closed':
       return TABS_ROW_PX;
-    case 'peek1':
-      return TABS_ROW_PX + CHIP_ROW_PX + CURTAIN_BREATHER_PX;
-    case 'peek2':
+    case 'peek':
       return (
         TABS_ROW_PX +
         CHIP_ROW_PX +