fix(界面): 能点的文字平时就是绿色，不用再把鼠标移上去才看得出能点

首页「全部」、提交详情的用户名和题名、题目页「点开看全部」「有 N 道差一点」、
班级对抗的班级名、知识点、后台标题等 30 多处原来和正文同色，鼠标移上去才变色，
手机上根本没有「移上去」。现在一律主题绿，移上去加下划线；没设颜色的文字按钮补上
type="primary"。排名名字列、整行可点的列表、后台 quaternary 次要按钮不动。

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

apps/web/src/oj/problem/components/FlowchartResult.vue

@@ -297,7 +297,7 @@ function goCode() {
             <n-button text type="primary" size="small" @click="versionZoom = true">
               放大看
             </n-button>
-            <n-button text size="small" @click="versionOpen = !versionOpen">
+            <n-button text type="primary" size="small" @click="versionOpen = !versionOpen">
               {{ versionOpen ? "收起" : "展开" }}
             </n-button>
           </div>

apps/web/src/oj/problem/components/ProblemContent.vue

@@ -272,7 +272,7 @@ const astRequirements = computed(() => Object.entries(problem.value?.astRequirem
         <n-button text type="primary" size="small" @click="myFlowchartZoom = true">
           放大看
         </n-button>
-        <n-button text size="small" @click="myFlowchartOpen = !myFlowchartOpen">
+        <n-button text type="primary" size="small" @click="myFlowchartOpen = !myFlowchartOpen">
           {{ myFlowchartOpen ? "收起" : "展开" }}
         </n-button>
       </div>

apps/web/src/oj/problem/components/ProblemSubmission.vue

@@ -325,7 +325,7 @@ watch(query, () => {
                   放回编辑器
                 </n-button>
                 <n-button size="small" @click="copy(row.id)">复制</n-button>
-                <n-button size="small" text class="more" @click="openDetail(row.id)">
+                <n-button size="small" text type="primary" class="more" @click="openDetail(row.id)">
                   完整详情 ›
                 </n-button>
               </div>
@@ -499,12 +499,12 @@ watch(query, () => {
   border: 0;
   background: transparent;
   font: inherit;
-  color: v-bind("theme.textColor3");
+  color: v-bind("theme.primaryColor");
   cursor: pointer;
 }
 
 .code-more:hover {
-  color: v-bind("theme.primaryColor");
+  text-decoration: underline;
 }
 
 .detail-actions {

apps/web/src/oj/problem/components/ProgressRow.vue

@@ -169,11 +169,11 @@ const fresh = computed(() => props.progress.solved === 0)
 
 .next b {
   font-weight: 600;
-  color: v-bind("theme.textColor1");
+  color: v-bind("theme.primaryColor");
 }
 
 .next:hover b {
-  color: v-bind("theme.primaryColor");
+  text-decoration: underline;
 }
 
 .almost {
@@ -181,7 +181,7 @@ const fresh = computed(() => props.progress.solved === 0)
   padding: 0;
   background: transparent;
   font: inherit;
-  color: v-bind("theme.textColor3");
+  color: v-bind("theme.primaryColor");
   display: inline-flex;
   align-items: center;
   gap: 3px;
@@ -189,7 +189,7 @@ const fresh = computed(() => props.progress.solved === 0)
 }
 
 .almost:hover {
-  color: v-bind("theme.primaryColor");
+  text-decoration: underline;
 }
 
 .start {

apps/web/src/oj/problem/components/SimilarProblems.vue

@@ -10,6 +10,7 @@ const cache = new Map<string, Promise<ProblemRow[]>>()
 
 <script setup lang="ts">
 import { storeToRefs } from "pinia"
+import { useThemeVars } from "naive-ui"
 import { getSimilarProblems } from "oj/api"
 import { useProblemStore } from "oj/store/problem"
 
@@ -19,6 +20,8 @@ import { useProblemStore } from "oj/store/problem"
  */
 const props = defineProps<{ title: string }>()
 
+const theme = useThemeVars()
+
 const { problem } = storeToRefs(useProblemStore())
 const list = ref<ProblemRow[]>([])
 
@@ -90,6 +93,7 @@ function difficultyType(difficulty: string) {
 }
 
 .name {
+  color: v-bind("theme.primaryColor");
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;