Standardize ASP filenames: remove underscores

Renamed 45 ASP files to follow lowercase concatenated naming convention:
- Direct handlers: save_machine_direct.asp -> savemachinedirect.asp
- USB files: checkin_usb.asp -> checkinusb.asp
- API files: api_usb.asp -> apiusb.asp
- Map files: network_map.asp -> networkmap.asp
- Printer files: printer_lookup.asp -> printerlookup.asp

Also:
- Updated 84+ internal references across all ASP and JS files
- Deleted 6 test/duplicate files (editmacine.asp, test_*.asp)
- Updated production migration guide with filename changes
- Added rename scripts for Linux (bash) and Windows (PowerShell)

savecheckinusb.asp

@@ -0,0 +1,109 @@
+<%
+'=============================================================================
+' FILE: savecheckinusb.asp
+' PURPOSE: Process USB check-in request
+' SECURITY: Parameterized queries, input validation
+' CREATED: 2025-12-07
+'=============================================================================
+%>
+<!--#include file="./includes/sql.asp"-->
+<!--#include file="./includes/response.asp"-->
+<%
+	' Get form values
+	Dim checkoutid, waswiped, notes
+	checkoutid = Trim(Request.Form("checkoutid"))
+	waswiped = Trim(Request.Form("waswiped"))
+	notes = Trim(Request.Form("notes"))
+
+	' Validate checkoutid
+	If checkoutid = "" Or Not IsNumeric(checkoutid) Then
+		objConn.Close
+		ShowError "Invalid checkout ID.", "checkinusb.asp"
+		Response.End
+	End If
+
+	' Validate waswiped - must be checked (value = "1")
+	Dim wipedValue
+	If waswiped = "1" Then
+		wipedValue = 1
+	Else
+		objConn.Close
+		ShowError "You must confirm the USB has been wiped before check-in.", "checkinusb.asp"
+		Response.End
+	End If
+
+	' Verify the checkout record exists and is still open
+	Dim checkSQL, cmdCheck, rsCheck
+	checkSQL = "SELECT uc.checkoutid, uc.machineid, uc.sso, m.serialnumber, m.alias " & _
+	           "FROM usbcheckouts uc " & _
+	           "JOIN machines m ON uc.machineid = m.machineid " & _
+	           "WHERE uc.checkoutid = ? AND uc.checkin_time IS NULL"
+
+	Set cmdCheck = Server.CreateObject("ADODB.Command")
+	cmdCheck.ActiveConnection = objConn
+	cmdCheck.CommandText = checkSQL
+	cmdCheck.CommandType = 1
+	cmdCheck.Parameters.Append cmdCheck.CreateParameter("@checkoutid", 3, 1, , CLng(checkoutid))
+
+	Set rsCheck = cmdCheck.Execute
+
+	If rsCheck.EOF Then
+		rsCheck.Close
+		Set rsCheck = Nothing
+		Set cmdCheck = Nothing
+		objConn.Close
+		ShowError "Checkout record not found or already checked in.", "checkinusb.asp"
+		Response.End
+	End If
+
+	Dim serialnumber, usbAlias, sso
+	serialnumber = rsCheck("serialnumber") & ""
+	usbAlias = rsCheck("alias") & ""
+	sso = rsCheck("sso") & ""
+
+	rsCheck.Close
+	Set rsCheck = Nothing
+	Set cmdCheck = Nothing
+
+	' Update checkout record with check-in info
+	Dim updateSQL, cmdUpdate
+	updateSQL = "UPDATE usbcheckouts SET checkin_time = NOW(), was_wiped = ?, checkin_notes = ? WHERE checkoutid = ?"
+
+	Set cmdUpdate = Server.CreateObject("ADODB.Command")
+	cmdUpdate.ActiveConnection = objConn
+	cmdUpdate.CommandText = updateSQL
+	cmdUpdate.CommandType = 1
+	cmdUpdate.Parameters.Append cmdUpdate.CreateParameter("@waswiped", 3, 1, , wipedValue)
+
+	If notes = "" Then
+		cmdUpdate.Parameters.Append cmdUpdate.CreateParameter("@notes", 200, 1, 1000, Null)
+	Else
+		cmdUpdate.Parameters.Append cmdUpdate.CreateParameter("@notes", 200, 1, 1000, notes)
+	End If
+
+	cmdUpdate.Parameters.Append cmdUpdate.CreateParameter("@checkoutid", 3, 1, , CLng(checkoutid))
+
+	On Error Resume Next
+	cmdUpdate.Execute
+
+	If Err.Number = 0 Then
+		Set cmdUpdate = Nothing
+		objConn.Close
+
+		' Build display name
+		Dim displayName
+		If usbAlias <> "" And usbAlias <> serialnumber Then
+			displayName = serialnumber & " (" & usbAlias & ")"
+		Else
+			displayName = serialnumber
+		End If
+
+		ShowSuccess "USB '" & Server.HTMLEncode(displayName) & "' checked in successfully. Previously held by SSO " & Server.HTMLEncode(sso) & ".", "displayusb.asp", "USB Check-in"
+	Else
+		Dim updateErr
+		updateErr = Err.Description
+		Set cmdUpdate = Nothing
+		objConn.Close
+		ShowError "Error checking in USB: " & Server.HTMLEncode(updateErr), "checkinusb.asp"
+	End If
+%>