feat: initial commit - Phase 1 & 2 core features

frontend/node_modules/element-plus/theme-chalk/el-timeline.css

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+.el-timeline{--el-timeline-node-size-normal:12px;--el-timeline-node-size-large:14px;--el-timeline-node-color:var(--el-border-color-light);font-size:var(--el-font-size-base);margin:0;list-style:none}.el-timeline .el-timeline-item:last-child .el-timeline-item__tail{display:none}.el-timeline .el-timeline-item__center{align-items:center;display:flex}.el-timeline .el-timeline-item__center .el-timeline-item__wrapper{width:100%}.el-timeline .el-timeline-item__center .el-timeline-item__tail{top:0}.el-timeline .el-timeline-item__center:first-child .el-timeline-item__tail{height:calc(50% + 10px);top:calc(50% - 10px)}.el-timeline .el-timeline-item__center:last-child .el-timeline-item__tail{height:calc(50% - 10px);display:block}.el-timeline.is-start{padding-left:40px;padding-right:0}.el-timeline.is-end{padding-left:0;padding-right:40px}.el-timeline.is-alternate{padding-left:20px;padding-right:20px}.el-timeline.is-alternate .el-timeline-item:nth-child(odd) .el-timeline-item__wrapper{width:calc(50% - 28px);left:calc(50% - var(--el-timeline-node-size-large) / 2);padding-left:28px}.el-timeline.is-alternate .el-timeline-item:nth-child(2n) .el-timeline-item__wrapper{width:calc(50% - 28px + var(--el-timeline-node-size-large) / 2);text-align:right;padding-right:28px}.el-timeline.is-alternate-reverse{padding-left:20px;padding-right:20px}.el-timeline.is-alternate-reverse .el-timeline-item:nth-child(odd) .el-timeline-item__wrapper{width:calc(50% - 28px + var(--el-timeline-node-size-large) / 2);text-align:right;padding-right:28px}.el-timeline.is-alternate-reverse .el-timeline-item:nth-child(2n) .el-timeline-item__wrapper{width:calc(50% - 28px);left:calc(50% - var(--el-timeline-node-size-large) / 2);padding-left:28px}