feat: pagina Clienti redesign Quiet Luxury — tabella tokenizzata + copia link

- /admin/clients replica design-reference/pagina-clienti (dual light/dark via token)
- ClientRow: colonne numeriche font-mono right-aligned, incassato come pill emerald,
  cella "Link profilo" con pill mono troncata + CopyLinkButton
- nuovo primitivo CopyLinkButton (copia URL assoluto, feedback check emerald)
- PageHeader con sottotitolo + footer conteggio clienti
- DESIGN-SYSTEM.md: inventory (CopyLinkButton, ClientRow) + note pagina Clienti

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.claude/settings.json

@@ -0,0 +1,31 @@
+{
+  "permissions": {
+    "allow": [
+      "mcp__plugin_claude-mem_mcp-search__get_observations",
+      "Bash(rtk tsc *)",
+      "Bash(rtk git *)",
+      "Bash(rtk grep *)",
+      "Read(//Users/simonecavalli/.claude/get-shit-done/references/**)",
+      "Skill(gsd-execute-phase)",
+      "Skill(gsd-execute-phase:*)",
+      "Skill(gsd-plan-phase)",
+      "Skill(gsd-plan-phase:*)",
+      "Skill(gsd-progress)",
+      "Skill(gsd-progress:*)",
+      "Skill(gsd-complete-milestone)",
+      "Skill(gsd-complete-milestone:*)",
+      "Read(//Users/simonecavalli/Downloads/**)"
+    ]
+  },
+  "enabledPlugins": {
+    "impeccable@impeccable": true
+  },
+  "extraKnownMarketplaces": {
+    "impeccable": {
+      "source": {
+        "source": "github",
+        "repo": "pbakaus/impeccable"
+      }
+    }
+  }
+}