docs: file ISSUES #147 (inventory scroll polish) + #148 (status-bar backpack toggles inventory)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/ISSUES.md

@@ -46,6 +46,35 @@ Copy this block when adding a new issue:
 
 ---
 
+## #148 — Status-bar backpack icon should toggle the inventory window (stateful open/closed)
+
+**Status:** OPEN
+**Severity:** MEDIUM
+**Filed:** 2026-06-22
+
+The backpack icon in the status bar / toolbar should be **clickable to open/close the inventory
+window** (toggle), and its art should reflect the inventory's state — a **closed** backpack when the
+inventory is closed, an **open** backpack when it's open. Today the inventory opens via F12 only;
+there's no clickable status-bar affordance and the icon isn't stateful. Wire the click → inventory
+toggle (the window manager / `UiHost` RegisterWindow + the F12 toggle path) and swap the icon sprite
+on the inventory window's visibility change. Investigate the retail status-bar backpack element +
+its open/closed sprites when picked up.
+
+---
+
+## #147 — Inventory item-grid scrolling polish
+
+**Status:** OPEN
+**Severity:** LOW
+**Filed:** 2026-06-22
+
+The inventory contents-grid scrolling (gutter scrollbar `0x100001C7` bound to `UiItemList.Scroll`,
+whole-row clip via `UiScrollable`) works but needs visual/UX polish — smoothness, thumb behavior,
+wheel step, row-clip edges. Confirm the exact symptoms with the user when picked up. Filed from the
+D.2b inventory visual gate.
+
+---
+
 ## #146 — D.2b inventory capacity-bar visual polish
 
 **Status:** OPEN