fix(admin): clip rate chart at 100% — SVG clipPath + data cap

Two-layer fix:
- SVG clipPath on plot area: path physically cannot escape chart bounds
- Chart flush caps rpm at rateLimit: timing drift (two batches in one
  5 s window) no longer causes visual overshoot
Live label still shows true req/min and % including values > 100%.

Co-Authored-By: Mira Rehfeld <noreply@anthropic.com>

apix-admin/src/main/resources/templates/DashboardResource/global.html

@@ -106,6 +106,6 @@ nav {
 <script>var __D = {statsJson.raw};</script>
 <script src="https://cdn.jsdelivr.net/npm/d3@7/dist/d3.min.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/topojson-client@3/dist/topojson-client.min.js"></script>
-<script src="/admin.js?v=6"></script>
+<script src="/admin.js?v=7"></script>
 </body>
 </html>

apix-admin/src/main/resources/templates/DashboardResource/sandbox.html

@@ -151,6 +151,6 @@ button.promote:hover { background: #2ea043; }
 <script>var __D = {dataJson.raw};</script>
 <script src="https://cdn.jsdelivr.net/npm/d3@7/dist/d3.min.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/topojson-client@3/dist/topojson-client.min.js"></script>
-<script src="/admin.js?v=6"></script>
+<script src="/admin.js?v=7"></script>
 </body>
 </html>