fix: remove duplicate move_schematic_component tool registration and add regression test

The PR added a second server.tool("move_schematic_component", ...) at line 1127
without removing the original registration at line 722, causing the server to
fail on startup with "Tool move_schematic_component is already registered".

Also adds tests/test_ts_tool_registry.py which scans all src/tools/**/*.ts files
for duplicate server.tool() names so this class of bug is caught automatically.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/tools/schematic.ts

@@ -717,48 +717,6 @@ Note: operates on .kicad_sch files only. To modify a PCB footprint use edit_comp
     },
   );
 
-  // Move schematic component
-  server.tool(
-    "move_schematic_component",
-    "Move a placed symbol to a new position in the schematic.",
-    {
-      schematicPath: z.string().describe("Path to the .kicad_sch file"),
-      reference: z.string().describe("Reference designator (e.g., R1, U1)"),
-      position: z
-        .object({
-          x: z.number(),
-          y: z.number(),
-        })
-        .describe("New position"),
-    },
-    async (args: {
-      schematicPath: string;
-      reference: string;
-      position: { x: number; y: number };
-    }) => {
-      const result = await callKicadScript("move_schematic_component", args);
-      if (result.success) {
-        return {
-          content: [
-            {
-              type: "text",
-              text: `Moved ${args.reference} from (${result.oldPosition.x}, ${result.oldPosition.y}) to (${result.newPosition.x}, ${result.newPosition.y})`,
-            },
-          ],
-        };
-      }
-      return {
-        content: [
-          {
-            type: "text",
-            text: `Failed to move component: ${result.message || "Unknown error"}`,
-          },
-        ],
-        isError: true,
-      };
-    },
-  );
-
   // Rotate schematic component
   server.tool(
     "rotate_schematic_component",

tests/test_ts_tool_registry.py

@@ -0,0 +1,61 @@
+"""
+Regression test: no MCP tool name is registered more than once across all
+TypeScript tool files in src/tools/.
+
+This caught a real bug where move_schematic_component was registered twice
+(once in the original code and once in the PR adding wire-preservation),
+causing the server to fail on startup with:
+  Error: Tool move_schematic_component is already registered
+"""
+
+import re
+from collections import Counter
+from pathlib import Path
+
+import pytest
+
+SRC_TOOLS_DIR = Path(__file__).parent.parent / "src" / "tools"
+
+# Pattern matches the tool-name argument to server.tool(
+#   server.tool(
+#     "some_tool_name",
+_SERVER_TOOL_RE = re.compile(r'server\.tool\(\s*["\']([a-zA-Z0-9_]+)["\']')
+
+
+@pytest.mark.unit
+class TestTsToolRegistry:
+    def _collect_registrations(self):
+        """Return list of (tool_name, file, line_no) for every server.tool() call."""
+        registrations = []
+        for ts_file in sorted(SRC_TOOLS_DIR.glob("**/*.ts")):
+            text = ts_file.read_text(encoding="utf-8")
+            for m in _SERVER_TOOL_RE.finditer(text):
+                line_no = text[: m.start()].count("\n") + 1
+                registrations.append((m.group(1), ts_file.name, line_no))
+        return registrations
+
+    def test_no_duplicate_tool_names(self):
+        """Every tool name must appear exactly once across all TS tool files."""
+        registrations = self._collect_registrations()
+        assert registrations, "No server.tool() calls found — check SRC_TOOLS_DIR path"
+
+        counts = Counter(name for name, _, _ in registrations)
+        duplicates = {name: count for name, count in counts.items() if count > 1}
+
+        if duplicates:
+            details = []
+            for dup_name in sorted(duplicates):
+                locations = [
+                    f"  {fname}:{line}" for name, fname, line in registrations if name == dup_name
+                ]
+                details.append(f"{dup_name} ({duplicates[dup_name]}x):\n" + "\n".join(locations))
+            pytest.fail(
+                "Duplicate MCP tool registrations found — server will fail to start:\n\n"
+                + "\n\n".join(details)
+            )
+
+    def test_tool_files_exist(self):
+        """Sanity check: src/tools/ directory must be present and contain TS files."""
+        assert SRC_TOOLS_DIR.is_dir(), f"src/tools/ not found at {SRC_TOOLS_DIR}"
+        ts_files = list(SRC_TOOLS_DIR.glob("**/*.ts"))
+        assert ts_files, "No .ts files found in src/tools/"