Replace machinetypeid 33-43 checks with pctypeid throughout codebase

- PCs now identified by pctypeid IS NOT NULL (not machinetypeid >= 33)
- Equipment identified by pctypeid IS NULL (not machinetypeid < 33)
- Updated 8 files: search.asp, savemachineedit.asp, displaymachine.asp,
  displaypc.asp, displaypcs.asp, machine_map.asp, displaymachines.asp, api.asp
- Simplified queries and removed redundant machinetypeid checks
- Updated all related comments to reflect new pattern

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

displaymachine.asp

@@ -290,7 +290,7 @@ strControlPCSQL = "SELECT m.machineid, m.hostname, m.machinenumber FROM machiner
                   "JOIN relationshiptypes rt ON mr.relationshiptypeid = rt.relationshiptypeid " & _
                   "JOIN machines m ON mr.machineid = m.machineid " & _
                   "WHERE mr.related_machineid = ? AND rt.relationshiptype = 'Controls' AND mr.isactive = 1 " & _
-                  "AND m.machinetypeid >= 33 LIMIT 1"
+                  "AND m.pctypeid IS NOT NULL LIMIT 1"
 Set rsControlPC = ExecuteParameterizedQuery(objConn, strControlPCSQL, Array(machineid))
 
 If rsControlPC.EOF Then
@@ -300,7 +300,7 @@ If rsControlPC.EOF Then
                       "JOIN relationshiptypes rt ON mr.relationshiptypeid = rt.relationshiptypeid " & _
                       "JOIN machines m ON mr.related_machineid = m.machineid " & _
                       "WHERE mr.machineid = ? AND rt.relationshiptype = 'Controls' AND mr.isactive = 1 " & _
-                      "AND m.machinetypeid >= 33 LIMIT 1"
+                      "AND m.pctypeid IS NOT NULL LIMIT 1"
     Set rsControlPC = ExecuteParameterizedQuery(objConn, strControlPCSQL, Array(machineid))
 End If
 
@@ -412,7 +412,7 @@ End If
                             <tbody>
 <%
     ' Query PCs that control this machine (directly or via dualpath)
-    ' Check both directions - the PC is identified by machinetypeid IN (33-43)
+    ' Check both directions - the PC is identified by pctypeid IS NOT NULL
     ' Use GROUP_CONCAT to combine multiple IPs into one row per PC
     strSQL2 = "SELECT m.machineid, m.machinenumber, m.hostname, GROUP_CONCAT(DISTINCT c.address ORDER BY c.address SEPARATOR ', ') as address, 'Controls' as relationshiptype " & _
               "FROM machinerelationships mr " & _