chore(assets): migrate zibll img resources to assets/img

Copy Zibll's widget/visual reference assets into assets/img for
1:1 replication (Phase 5 resource migration):
- slider-bg.jpg, slider-layer-1.png, slider-layer-2.png
- user_t.jpg, avatar-default.png
- null*.svg (null, null-2, null-cap, null-love, null-money,
  null-order, null-post, null-search, null-set, null-user)
- thumbnail*.svg (thumbnail, thumbnail-lg, thumbnail-sm,
  thumbnail-null)
- medal/ (31 medal-*.svg badges)

These are reference placeholders to be progressively replaced;
no CSF framework ported. user-level-1..10.png already present.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

assets/img/medal/medal-11.svg

@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 484.83 484.83"><defs><style>.cls-1{fill:#cd9427;}.cls-12,.cls-2{fill:none;}.cls-3{isolation:isolate;}.cls-4{fill:#60ba76;}.cls-5{fill:#56b769;}.cls-6,.cls-7,.cls-8{opacity:0.41;}.cls-6{fill:url(#未命名的渐变_16);}.cls-7{fill:url(#未命名的渐变_16-2);}.cls-8{fill:url(#未命名的渐变_16-3);}.cls-9{fill:#6b7;}.cls-10,.cls-12{stroke-miterlimit:10;}.cls-10{stroke-width:0.64px;fill:url(#未命名的渐变_32);stroke:url(#未命名的渐变_16-4);}.cls-11{fill:url(#未命名的渐变_33);}.cls-12{stroke:#fff;stroke-width:0.6px;}.cls-13,.cls-36{mix-blend-mode:multiply;}.cls-13{opacity:0.6;}.cls-14{clip-path:url(#clip-path);}.cls-15{clip-path:url(#clip-path-2);}.cls-16{clip-path:url(#clip-path-3);}.cls-17{clip-path:url(#clip-path-4);}.cls-18{clip-path:url(#clip-path-5);}.cls-19{clip-path:url(#clip-path-6);}.cls-20{clip-path:url(#clip-path-7);}.cls-21{fill:#828282;}.cls-22{clip-path:url(#clip-path-8);}.cls-23{clip-path:url(#clip-path-9);}.cls-24{clip-path:url(#clip-path-10);}.cls-25{clip-path:url(#clip-path-11);}.cls-26{clip-path:url(#clip-path-12);}.cls-27{clip-path:url(#clip-path-13);}.cls-28{clip-path:url(#clip-path-14);}.cls-29{clip-path:url(#clip-path-15);}.cls-30{clip-path:url(#clip-path-16);}.cls-31{clip-path:url(#clip-path-17);}.cls-32{fill:#aaa;}.cls-33{clip-path:url(#clip-path-18);}.cls-34{clip-path:url(#clip-path-19);}.cls-35{clip-path:url(#clip-path-20);}.cls-36{opacity:0.4;}.cls-37{clip-path:url(#clip-path-21);}.cls-38{fill:#9f9fa0;}.cls-39{fill:#a3a3a4;}.cls-40{fill:#a7a8a8;}.cls-41{clip-path:url(#clip-path-22);}.cls-42{fill:#a3a3a3;}.cls-43{clip-path:url(#clip-path-23);}.cls-44{fill:#b7b8b8;}.cls-45{clip-path:url(#clip-path-24);}.cls-46{fill:#abacac;}.cls-47{fill:#afb0b0;}.cls-48{fill:#b3b4b4;}.cls-49{clip-path:url(#clip-path-25);}.cls-50{fill:#858585;}.cls-51{clip-path:url(#clip-path-26);}.cls-52{fill:#a3a4a4;}.cls-53{fill:#9a9b9b;}.cls-54{clip-path:url(#clip-path-27);}.cls-55{fill:#a1a1a1;}.cls-56{fill:#b5b6b6;}.cls-57{clip-path:url(#clip-path-28);}.cls-58{clip-path:url(#clip-path-29);}.cls-59{fill:gray;}.cls-60{clip-path:url(#clip-path-30);}.cls-61{clip-path:url(#clip-path-31);}.cls-62{clip-path:url(#clip-path-32);}.cls-63{clip-path:url(#clip-path-33);}.cls-64{clip-path:url(#clip-path-34);}.cls-65{clip-path:url(#clip-path-35);}.cls-66{clip-path:url(#clip-path-36);}.cls-67{fill:#9e9e9e;}.cls-68{fill:#999;}.cls-69{fill:#949494;}.cls-70{fill:#8f8f8f;}.cls-71{fill:#8a8a8a;}.cls-72{fill:#ababac;}.cls-73{clip-path:url(#clip-path-37);}.cls-74{clip-path:url(#clip-path-38);}.cls-75{clip-path:url(#clip-path-39);}.cls-76{fill:#9d9d9d;}.cls-77{clip-path:url(#clip-path-40);}.cls-78{clip-path:url(#clip-path-41);}.cls-79{clip-path:url(#clip-path-42);}.cls-80{clip-path:url(#clip-path-43);}.cls-81{clip-path:url(#clip-path-44);}.cls-82{clip-path:url(#clip-path-45);}.cls-83{clip-path:url(#clip-path-46);}.cls-84{fill:#b2b3b3;}.cls-85{clip-path:url(#clip-path-47);}.cls-86{fill:#e2e3e3;}.cls-87{fill:#dedede;}.cls-88{clip-path:url(#clip-path-48);}.cls-89{clip-path:url(#clip-path-49);}.cls-90{clip-path:url(#clip-path-50);}.cls-91{clip-path:url(#clip-path-51);}.cls-92{clip-path:url(#clip-path-52);}.cls-93{clip-path:url(#clip-path-53);}.cls-94{clip-path:url(#clip-path-54);}.cls-95{clip-path:url(#clip-path-55);}.cls-96{clip-path:url(#clip-path-56);}.cls-97{clip-path:url(#clip-path-57);}.cls-98{clip-path:url(#clip-path-58);}.cls-99{clip-path:url(#clip-path-59);}.cls-100{clip-path:url(#clip-path-60);}.cls-101{clip-path:url(#clip-path-61);}.cls-102{clip-path:url(#clip-path-62);}.cls-103{clip-path:url(#clip-path-63);}.cls-104{clip-path:url(#clip-path-64);}.cls-105{clip-path:url(#clip-path-65);}.cls-106{clip-path:url(#clip-path-66);}.cls-107{clip-path:url(#clip-path-67);}.cls-108{clip-path:url(#clip-path-68);}.cls-109{clip-path:url(#clip-path-69);}.cls-110{clip-path:url(#clip-path-70);}.cls-111{clip-path:url(#clip-path-71);}.cls-112{clip-path:url(#clip-path-72);}.cls-113{clip-path:url(#clip-path-73);}.cls-114{clip-path:url(#clip-path-74);}.cls-115{clip-path:url(#clip-path-75);}.cls-116{clip-path:url(#clip-path-76);}.cls-117{clip-path:url(#clip-path-77);}.cls-118{clip-path:url(#clip-path-78);}.cls-119{clip-path:url(#clip-path-79);}.cls-120{clip-path:url(#clip-path-80);}.cls-121{clip-path:url(#clip-path-81);}.cls-122{clip-path:url(#clip-path-82);}.cls-123{clip-path:url(#clip-path-83);}.cls-124{clip-path:url(#clip-path-84);}.cls-125{clip-path:url(#clip-path-85);}.cls-126{clip-path:url(#clip-path-86);}.cls-127{clip-path:url(#clip-path-87);}.cls-128{clip-path:url(#clip-path-88);}.cls-129{clip-path:url(#clip-path-89);}.cls-130{clip-path:url(#clip-path-90);}.cls-131{clip-path:url(#clip-path-91);}.cls-132{clip-path:url(#clip-path-92);}.cls-133{clip-path:url(#clip-path-93);}.cls-134{clip-path:url(#clip-path-94);}.cls-135{clip-path:url(#clip-path-95);}.cls-136{clip-path:url(#clip-path-96);}.cls-137{clip-path:url(#clip-path-97);}.cLine truncated