Fix test failures: update to new AddDependencyParams field names

- Update tests to use issue_id/depends_on_id instead of from_id/to_id
- Fix test_client_lazy_initialization to mock create_bd_client instead of BdClient
- Add workspace setup for lazy initialization test
- Fixes 2 test failures (now 123 passing, down from 121)

Amp-Thread-ID: https://ampcode.com/threads/T-71b3ce65-87cb-451a-a30d-162d76d92f9c
Co-authored-by: Amp <amp@ampcode.com>

integrations/beads-mcp/tests/test_mcp_server_integration.py

@@ -348,8 +348,8 @@ async def test_ready_work_tool(mcp_client):
     await mcp_client.call_tool(
         "dep",
         {
-            "from_id": blocked_issue["id"],
-            "to_id": blocking_issue["id"],
+            "issue_id": blocked_issue["id"],
+            "depends_on_id": blocking_issue["id"],
             "dep_type": "blocks",
         },
     )
@@ -573,8 +573,8 @@ async def test_blocked_tool(mcp_client):
     await mcp_client.call_tool(
         "dep",
         {
-            "from_id": blocked_issue["id"],
-            "to_id": blocking_issue["id"],
+            "issue_id": blocked_issue["id"],
+            "depends_on_id": blocking_issue["id"],
             "dep_type": "blocks",
         },
     )