fix: LIGHT variant bg animations, decoration grid spacing, bug doc updates

- chatBackground.ts: remove animRainGlowKeyframe and animGridBrightnessKeyframe
  from LIGHT anim-rain and anim-pulse definitions (these were removed from the
  import and from DARK variants in the previous session but the LIGHT variants
  were missed, leaving stale references that would cause a build error)
- ProfileDecoration.tsx: increase decoration grid gap 20→36 (visual gap was
  only 4px due to 8px image overflow beyond each 52×52 button), fix paddingBottom
  4→8 and add paddingRight:8 to prevent edge clipping
- LOTUS_BUGS.md: correct bug #8 root cause (CSP, not lazy-loading), add
  bugs #9 (grid spacing) and #10 (Windows taskbar badge)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

LOTUS_BUGS.md

@@ -113,6 +113,7 @@ This document tracks identified bugs, edge cases, and architectural discrepancie
 *   **Root Cause:** `filter` and `opacity` CSS properties affect an element AND all its descendants. Applying these as part of the `animation` shorthand on the `Page` container made them "inherited" visually by everything inside the room view.
 *   **Side Effect:** `filter` animation also created a CSS stacking context on Page, which pushed Seasonal Theme overlays (position:fixed; z-index:9997) behind the Page compositor layer.
 *   **Fix Applied:** Removed `animRainGlowKeyframe`, `animGridBrightnessKeyframe`, `animFirefliesGlowKeyframe`, and `animFirefliesBlinkKeyframe` from `chatBackground.ts`. Only `backgroundPosition` / `backgroundSize` animations remain — these are safe and do not affect descendants or create stacking contexts.
+*   **Follow-up (June 2026):** The initial fix only removed glow/brightness keyframes from the DARK variant definitions. The LIGHT variant `anim-rain` and `anim-pulse` entries still referenced `animRainGlowKeyframe` and `animGridBrightnessKeyframe` (which were no longer imported, causing a build error). Both references removed from LIGHT variants to complete the fix.
 
 ### 7. Seasonal Themes Display Behind Chat Background
 **File:** `src/app/components/seasonal/SeasonalEffect.tsx`
@@ -123,9 +124,29 @@ This document tracks identified bugs, edge cases, and architectural discrepancie
 *   **Fix Applied:** See Bug #6. No additional changes to SeasonalEffect required.
 
 ### 8. Avatar Decoration Images Not Rendering in Settings
-**File:** `src/app/features/settings/account/ProfileDecoration.tsx`
+**File:** `src/app/features/settings/account/ProfileDecoration.tsx` / LXC 106 nginx
 **Status:** ✅ RESOLVED (June 2026)
 
 *   **Issue:** Under Settings → Account → Avatar Decoration, no decoration images were visible.
-*   **Root Cause:** The `DecorationPreviewCell` used `loading="lazy"` on decoration images. The browser's lazy-loading algorithm determines image visibility from the viewport, but the decoration grid is inside a nested `overflowY: auto` scroll container inside a settings panel — the browser did not correctly detect these images as near the viewport and never triggered them to load.
-*   **Fix Applied:** Changed `loading="lazy"` to `loading="eager"` in `DecorationPreviewCell`. The settings panel is user-initiated, so eager loading is appropriate.
+*   **Initial (incorrect) diagnosis:** Suspected `loading="lazy"` in a nested scroll container. Changed to `loading="eager"` — images still did not render.
+*   **Actual Root Cause:** The server nginx Content Security Policy (`img-src` directive) on LXC 106 did not include `https://drive.lotusguild.org`. The browser silently blocked all 99 APNG requests with CSP violation errors (206 violations visible in DevTools console). The lazy-loading change was a red herring.
+*   **Fix Applied:** Added `https://drive.lotusguild.org` to the `img-src` directive in `/etc/nginx/sites-available/cinny` on LXC 106 (cinny-web-server) and reloaded nginx. Updated config is tracked in `pve-infra/containers/106-cinny-web-server/etc/nginx/sites-available/cinny`.
+
+### 9. Avatar Decoration Grid Spacing Too Tight
+**File:** `src/app/features/settings/account/ProfileDecoration.tsx`
+**Status:** ✅ RESOLVED (June 2026)
+
+*   **Issue:** Decoration preview cells in the settings picker appeared vertically and horizontally squished together with almost no gap between images.
+*   **Root Cause:** The flex container used `gap: 20px`, but each `52×52` button renders its decoration image with `position: absolute; top: -8px; left: -8px` (INSET=8), so each image bleeds 8px outside the button on all sides. The visual gap between images was `20 - 8 - 8 = 4px` — nearly nothing. Additionally `paddingBottom: 4` clipped the bottom overflow of the last row, and `paddingRight` was absent so the rightmost column clipped.
+*   **Fix Applied:** Increased `gap` from `20` to `36` (visual gap = 36 - 8 - 8 = 20px), changed `paddingBottom` from `4` to `INSET` (8px), added `paddingRight: INSET`.
+
+### 10. Windows Taskbar Badge Has Black Square Background and Small Number
+**File:** `src-tauri/src/lib.rs` (cinny-desktop) — `set_badge_count` command
+**Status:** ✅ RESOLVED (June 2026)
+
+*   **Issue:** The notification badge overlaid on the Windows taskbar icon had a solid black square background instead of a transparent circle, and the number was too small to read at a glance.
+*   **Root Cause (black square):** `CreateDIBSection` initialises the pixel buffer to zero (BGRA `0x00000000`). GDI drawing functions (`Ellipse`, `DrawTextW`) paint RGB values but never touch the alpha channel — all pixels retain `A=0`. When every pixel has `A=0`, Windows cannot use per-pixel alpha compositing and falls back to the monochrome mask (`hbm_mask`, all zeros = fully opaque), so the entire 16×16 bitmap is drawn opaque. The corner pixels outside the ellipse are `RGB(0,0,0)` = black, producing the black square.
+*   **Root Cause (small number):** Bitmap was 16×16 with an 11px font, giving very little room, especially for two-digit counts.
+*   **Fix Applied:**
+    1. After all GDI drawing, iterate the pixel buffer and set `alpha = 0xFF` for every non-zero pixel (`*pixel |= 0xFF00_0000`). Corner pixels (zero) retain `A=0` and composite as transparent.
+    2. Increased bitmap size from `16` to `20` and font height from `11` to `14`.