feat: add favorite task templates and optimize evidence exports

apps/showcase_ui/src/app/components/featured-tasks/featured-tasks.component.scss

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+:host{display:block;width:100%;color:#334155}.featured{margin-top:26px}.heading{display:flex;align-items:center;justify-content:space-between;gap:16px}h2{display:flex;align-items:center;gap:7px;margin:0;font-size:16px;font-weight:650;color:#1e293b}h2 span{font-size:20px;color:#d29a32}.heading p{font-size:12px;color:#64748b;margin:6px 0 0}.heading>input{max-width:210px;width:40%;border-radius:20px;background:#fff}.filters{display:flex;gap:5px;flex-wrap:wrap;margin:17px 0}.filters button{border:0;padding:6px 13px;border-radius:18px;font-size:12px;background:transparent;color:#64748b}.filters button.selected{background:#e0e7ff;color:#4338ca;font-weight:600}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:14px;align-items:start}.card{padding:16px;border:1px solid #e2e8f0;border-radius:16px;background:#fff;min-width:0;transition:border-color .15s,box-shadow .15s}.card:hover{border-color:#c7d2fe;box-shadow:0 4px 16px #33415508}.card.expanded{border-color:#a5b4fc}.card-heading{display:flex;align-items:center;justify-content:space-between}.mode{padding:3px 8px;background:#f1f5f9;color:#475569;border-radius:6px;font-size:11px;line-height:16px}.mode.pro{background:#ede9fe;color:#6d28d9}.mode.explore{background:#e0f2fe;color:#0369a1}.star{display:flex;padding:3px;border:0;background:transparent;color:#c58b23}.star span{font-size:19px;font-variation-settings:'FILL' 1}h3{font-size:14px;line-height:1.5;margin:13px 0 7px;overflow-wrap:anywhere;color:#1e293b}.model-summary{font-size:12px;color:#64748b;margin:0;overflow-wrap:anywhere}.card-title{display:flex;align-items:flex-start;gap:6px;margin:13px 0 7px}.card-title h3{flex:1;min-width:0;margin:0}.card-title .star{flex-shrink:0;width:24px;height:24px;align-items:center;justify-content:center;padding:0}.card-actions{display:flex;align-items:center;justify-content:space-between;margin-top:18px;gap:10px}.card-actions button{display:flex;align-items:center;gap:4px;padding:7px 10px;border-radius:8px;font-size:12px;white-space:nowrap}.card-actions span{font-size:16px}.configure{color:#64748b;border:0;background:transparent}.primary{border:1px solid #6366f1;background:#6366f1;color:white}.primary:hover{background:#4f46e5}.configuration{border-top:1px solid #e2e8f0;margin-top:14px;padding-top:14px;display:grid;gap:12px}.configuration label{display:grid;gap:6px;font-size:12px;color:#475569}.configuration .checkbox{display:flex;align-items:center}.checkbox input{width:auto}input,select{box-sizing:border-box;min-width:0;width:100%;padding:8px 10px;border:1px solid #cbd5e1;border-radius:8px;color:#334155;background:white;font:inherit;font-size:12px}option{color:#334155;background:#fff}.hint{font-size:11px;color:#64748b;line-height:1.5;margin:7px 0 0}.inherited{color:#927044}.save{justify-self:start;padding:7px 10px;border:1px solid #cbd5e1;background:#fff;color:#475569;border-radius:8px;font-size:12px}details{border:1px solid #e2e8f0;padding:10px;border-radius:9px}details summary{font-size:12px;cursor:pointer;overflow-wrap:anywhere}details[open]>label,details[open]>app-setting-slider{margin-top:12px;display:block}button{font-family:inherit;cursor:pointer}button:disabled{opacity:.5;cursor:default}button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid #818cf8;outline-offset:2px}.empty{display:flex;flex-direction:column;align-items:center;text-align:center;padding:28px 18px;border:1px dashed #cbd5e1;border-radius:16px;color:#64748b;font-size:12px;line-height:1.7}.empty>span{font-size:28px;color:#c5a365;margin-bottom:9px}.empty strong{font-size:14px;color:#475569}.empty p{max-width:440px;margin:8px 0 0}.error,.notice{padding:10px 12px;border-radius:8px;font-size:12px;line-height:1.6}.error{background:#fff1f2;color:#b91c1c}.notice{background:#f0fdf4;color:#166534}@media(max-width:560px){.heading{align-items:flex-start;flex-direction:column}.heading>input{width:100%;max-width:none}.cards{grid-template-columns:1fr}}