M6: Merge data files into spreadsheet (FDF, XFDF, filled PDF forms → CSV); form_merge_data tool

Co-Authored-By: Claude Opus 5.5 <[email protected]>

assets/icons/file-spreadsheet.svg

@@ -0,0 +1,20 @@
+<!-- @license lucide-static v1.49.0 - ISC -->
+<svg
+  class="lucide lucide-file-spreadsheet"
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M6 22a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h8a2.4 2.4 0 0 1 1.704.706l3.588 3.588A2.4 2.4 0 0 1 20 8v12a2 2 0 0 1-2 2z" />
+  <path d="M14 2v5a1 1 0 0 0 1 1h5" />
+  <path d="M8 13h2" />
+  <path d="M14 13h2" />
+  <path d="M8 17h2" />
+  <path d="M14 17h2" />
+</svg>