Add printer lookup page and fiscal week theme styling

- Add printerlookup.asp for Zabbix integration (lookup by IP/FQDN)
- Add fiscal week sidebar styling for all 16 themes
- Update CLAUDE.md with External Integrations section
- Fix fiscal week box centering with inline styles

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

printerlookup.asp

@@ -0,0 +1,40 @@
+<%@ Language="VBScript" %>
+<%
+Option Explicit
+Response.Buffer = True
+%>
+<!--#include file="includes/sql.asp"-->
+<%
+' Lookup printer by IP address or FQDN and redirect to displayprinter.asp
+' Used by Zabbix to link directly to printer details
+Dim ip, fqdn, lookupValue, cmd, rs
+
+ip = Trim(Request.QueryString("ip") & "")
+fqdn = Trim(Request.QueryString("fqdn") & "")
+
+If ip <> "" Then
+    lookupValue = ip
+ElseIf fqdn <> "" Then
+    lookupValue = fqdn
+Else
+    Response.Write "No IP or FQDN provided. Usage: printerlookup.asp?ip=x.x.x.x or printerlookup.asp?fqdn=hostname"
+    Response.End
+End If
+
+Set cmd = Server.CreateObject("ADODB.Command")
+cmd.ActiveConnection = objConn
+cmd.CommandText = "SELECT printerid FROM printers WHERE address = ? AND isactive = 1"
+cmd.Parameters.Append cmd.CreateParameter("@addr", 200, 1, 100, lookupValue)
+Set rs = cmd.Execute()
+
+If Not rs.EOF Then
+    Response.Redirect "displayprinter.asp?printerid=" & rs("printerid")
+Else
+    Response.Write "Printer not found: " & Server.HTMLEncode(lookupValue)
+End If
+
+rs.Close
+Set rs = Nothing
+Set cmd = Nothing
+objConn.Close
+%>