style: unify all views on Mission Control V2 design tokens

- Map legacy v1 CSS variables (--nx-*, --panel, --text-*, --surface*) to V2 tokens in nexus-tokens.css
- Restyle global shell (main.css), AppSidebar, AppHeader to match V2 Sidebar/Topbar (glass, gradients, Space Grotesk)
- Add GalaxyBackground to the v1 shell in App.vue
- Replace hardcoded v1 hex colors with V2 tokens in all deviating views (Agents, Calendar, Docs, Incidents, Memory, Notifications, ProjectDetail, Security, Team, TaskDetail, Settings)
- Keep JS status colors as hex where alpha suffixes are concatenated (AgentsIndex, Team, Notifications)
- Add Settings nav item (System group) + gear icon to V2 sidebar so it shows on the dashboard
- No component or layout structure changes; LoginView and TaskBoardView untouched

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

frontend/src/views/DocsView.vue

@@ -203,14 +203,14 @@ onMounted(loadDocs)
   border: 1px solid var(--line);
   border-radius: 8px;
   background: var(--panel);
-  color: #6f7889;
+  color: var(--tx-3);
 }
 .docs-search-bar input {
   flex: 1;
   border: none;
   outline: none;
   background: transparent;
-  color: #e8eaf0;
+  color: var(--tx);
   font: inherit;
   font-size: 13px;
 }
@@ -222,13 +222,13 @@ onMounted(loadDocs)
   border: 1px solid var(--line);
   border-radius: 8px;
   background: var(--panel);
-  color: #8991a1;
+  color: var(--tx-2);
 }
 .docs-filter-group select {
   border: none;
   outline: none;
   background: transparent;
-  color: #e8eaf0;
+  color: var(--tx);
   font: inherit;
   font-size: 12px;
   cursor: pointer;
@@ -241,7 +241,7 @@ onMounted(loadDocs)
 }
 .memory-sidebar {
   border: 1px solid var(--line);
-  border-radius: 9px;
+  border-radius: var(--r);
   background: var(--panel);
   padding: 8px;
   max-height: 640px;
@@ -250,7 +250,7 @@ onMounted(loadDocs)
 .memory-list-header {
   font-size: 9px;
   font-weight: 700;
-  color: #7065c8;
+  color: var(--a-mid);
   text-transform: uppercase;
   letter-spacing: 0.14em;
   padding: 10px 8px 6px;
@@ -264,7 +264,7 @@ onMounted(loadDocs)
   border: none;
   border-radius: 7px;
   background: transparent;
-  color: #e8eaf0;
+  color: var(--tx);
   text-align: left;
   cursor: pointer;
   font: inherit;
@@ -280,7 +280,7 @@ onMounted(loadDocs)
   display: grid;
   place-items: center;
   border-radius: 6px;
-  color: #a99cf5;
+  color: var(--a-mid);
   background: rgba(139,124,246,.1);
 }
 .memory-file-info strong {
@@ -305,41 +305,41 @@ onMounted(loadDocs)
 }
 .doc-category-badge.cat-phases {
   background: rgba(139,124,246,.12);
-  color: #a99cf5;
+  color: var(--a-mid);
 }
 .doc-category-badge.cat-skills {
   background: rgba(81,212,154,.1);
-  color: #51d49a;
+  color: var(--st-work);
 }
 .doc-category-badge.cat-workspace {
   background: rgba(229,176,94,.1);
-  color: #e5b05e;
+  color: var(--st-queue);
 }
 .doc-category-badge.cat-nexus {
   background: rgba(109,159,230,.1);
-  color: #6d9fe6;
+  color: var(--a-blue);
 }
 .doc-category-badge.cat-nexus-phases {
   background: rgba(225,110,117,.1);
-  color: #e16e75;
+  color: var(--st-block);
 }
 .doc-type-tag {
   font-size: 8px;
   padding: 1px 5px;
-  border: 1px solid #343947;
+  border: 1px solid var(--line-2);
   border-radius: 4px;
-  color: #8991a1;
+  color: var(--tx-2);
 }
 .memory-file-meta {
   display: flex;
   align-items: center;
   gap: 4px;
   font-size: 9px;
-  color: #7e8799;
+  color: var(--tx-3);
 }
 .memory-content {
   border: 1px solid var(--line);
-  border-radius: 9px;
+  border-radius: var(--r);
   background: var(--panel);
   padding: 24px;
   min-height: 480px;
@@ -363,7 +363,7 @@ onMounted(loadDocs)
   align-items: center;
   gap: 4px;
   font-size: 9px;
-  color: #7e8799;
+  color: var(--tx-3);
   margin-top: 4px;
 }
 .memory-back-btn {
@@ -374,13 +374,13 @@ onMounted(loadDocs)
   border: 1px solid var(--line);
   border-radius: 6px;
   background: transparent;
-  color: #8991a1;
+  color: var(--tx-2);
   font-size: 10px;
   cursor: pointer;
   flex-shrink: 0;
 }
 .memory-back-btn:hover {
-  color: #e8eaf0;
+  color: var(--tx);
   background: var(--accent-soft);
 }
 .memory-status {
@@ -389,11 +389,11 @@ onMounted(loadDocs)
   justify-content: center;
   gap: 8px;
   padding: 32px;
-  color: #7e8799;
+  color: var(--tx-3);
   font-size: 11px;
 }
 .memory-status.error {
-  color: #e16e75;
+  color: var(--st-block);
 }
 .memory-empty-state {
   display: flex;
@@ -402,27 +402,27 @@ onMounted(loadDocs)
   justify-content: center;
   text-align: center;
   min-height: 360px;
-  color: #6b7385;
+  color: var(--tx-3);
 }
 .memory-empty-state h3 {
   margin: 12px 0 6px;
   font-size: 14px;
-  color: #a5adba;
+  color: var(--tx-2);
 }
 .memory-empty-state p {
   margin: 0;
   font-size: 10px;
-  color: #7e8799;
+  color: var(--tx-3);
 }
 .memory-rendered {
   font-size: 12px;
   line-height: 1.7;
-  color: #d0d4dd;
+  color: var(--tx-2);
 }
 .memory-rendered :deep(h1),
 .memory-rendered :deep(h2),
 .memory-rendered :deep(h3) {
-  color: #e8eaf0;
+  color: var(--tx);
   margin: 1.2em 0 0.5em;
 }
 .memory-rendered :deep(h1) { font-size: 1.3rem; }
@@ -438,8 +438,8 @@ onMounted(loadDocs)
 .memory-rendered :deep(pre) {
   padding: 12px;
   border-radius: 8px;
-  background: #0d1016;
-  border: 1px solid var(--nx-line);
+  background: var(--space-2);
+  border: 1px solid var(--line);
   overflow-x: auto;
 }
 .memory-rendered :deep(pre code) {
@@ -447,7 +447,7 @@ onMounted(loadDocs)
   padding: 0;
 }
 .memory-rendered :deep(a) {
-  color: #a99cf5;
+  color: var(--a-mid);
   text-decoration: none;
 }
 .memory-rendered :deep(a:hover) {
@@ -461,11 +461,11 @@ onMounted(loadDocs)
 }
 .memory-rendered :deep(hr) {
   border: none;
-  border-top: 1px solid var(--nx-line);
+  border-top: 1px solid var(--line);
   margin: 1.2em 0;
 }
 .memory-rendered :deep(strong) {
-  color: #e8eaf0;
+  color: var(--tx);
 }
 .spin {
   animation: spin 1s linear infinite;