chore: sync branch with latest master changes

SECURITY.md

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+# Security Policy
+
+## Supported Versions
+
+Use this section to tell people about which versions of your project are
+currently being supported with security updates.
+
+| Version | Supported          |
+| ------- | ------------------ |
+| 5.1.x   | :white_check_mark: |
+| 5.0.x   | :x:                |
+| 4.0.x   | :white_check_mark: |
+| < 4.0   | :x:                |
+
+## Reporting a Vulnerability
+
+Use this section to tell people how to report a vulnerability.
+
+Tell them where to go, how often they can expect to get an update on a
+reported vulnerability, what to expect if the vulnerability is accepted or
+declined, etc.

docs/IHP_OpenPDK_eSim.md

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+# Integration of IHP OpenPDK with eSim
+
+## Overview
+
+This contribution demonstrates the integration of the IHP OpenPDK with eSim
+to enable CMOS circuit design and simulation using open-source EDA tools.
+
+## Objective
+
+- Integrate IHP OpenPDK MOSFET SPICE models with eSim
+- Design and simulate a CMOS inverter
+- Perform DC sweep and transient analysis
+- Validate inverter switching behavior
+
+## Tools Used
+
+- eSim (KiCad + NgSpice)
+- IHP OpenPDK
+- NgSpice
+
+## Circuit Implemented
+
+- CMOS Inverter using IHP NMOS and PMOS models
+- Supply voltage: 1.8V
+
+## Simulations Performed
+
+### Transient Analysis
+
+- `.tran 0.1ns 20ns`
+- Verified correct logical inversion
+
+### DC Sweep Analysis
+
+- `.dc VIN 0 1.8 0.01`
+- Verified voltage transfer characteristics
+
+## Results
+
+- Correct inverter operation observed
+- Threshold voltage near mid-supply
+- Stable transient and DC behavior
+
+## Notes
+
+- Absolute paths were used for SPICE model inclusion
+- Convergence issues resolved by reducing timestep
+
+## Report and Demo
+
+The detailed report and demonstration video are provided via links
+in the corresponding GitHub Pull Request.

library/SubcircuitLibrary/54f64/3_and-cache.lib

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+EESchema-LIBRARY Version 2.3
+#encoding utf-8
+#
+# PORT
+#
+DEF PORT U 0 40 Y Y 26 F N
+F0 "U" 50 100 30 H V C CNN
+F1 "PORT" 0 0 30 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+A 325 225 285 -1421 -1278 0 1 0 N 100 50 150 0
+A 376 -275 356 1294 1408 0 1 0 N 150 0 100 -50
+S -100 50 100 -50 0 1 0 N
+X ~ 1 250 0 100 L 30 30 1 1 B
+X ~ 2 250 0 100 L 30 30 2 1 B
+X ~ 3 250 0 100 L 30 30 3 1 B
+X ~ 4 250 0 100 L 30 30 4 1 B
+X ~ 5 250 0 100 L 30 30 5 1 B
+X ~ 6 250 0 100 L 30 30 6 1 B
+X ~ 7 250 0 100 L 30 30 7 1 B
+X ~ 8 250 0 100 L 30 30 8 1 B
+X ~ 9 250 0 100 L 30 30 9 1 B
+X ~ 10 250 0 100 L 30 30 10 1 B
+X ~ 11 250 0 100 L 30 30 11 1 B
+X ~ 12 250 0 100 L 30 30 12 1 B
+X ~ 13 250 0 100 L 30 30 13 1 B
+X ~ 14 250 0 100 L 30 30 14 1 B
+X ~ 15 250 0 100 L 30 30 15 1 B
+X ~ 16 250 0 100 L 30 30 16 1 B
+X ~ 17 250 0 100 L 30 30 17 1 B
+X ~ 18 250 0 100 L 30 30 18 1 B
+X ~ 19 250 0 100 L 30 30 19 1 B
+X ~ 20 250 0 100 L 30 30 20 1 B
+X ~ 21 250 0 100 L 30 30 21 1 B
+X ~ 22 250 0 100 L 30 30 22 1 B
+X ~ 23 250 0 100 L 30 30 23 1 B
+X ~ 24 250 0 100 L 30 30 24 1 B
+X ~ 25 250 0 100 L 30 30 25 1 B
+X ~ 26 250 0 100 L 30 30 26 1 B
+ENDDRAW
+ENDDEF
+#
+# d_and
+#
+DEF d_and U 0 40 Y Y 1 F N
+F0 "U" 0 0 60 H V C CNN
+F1 "d_and" 50 100 60 H V C CNN
+F2 "" 0 0 60 H V C CNN
+F3 "" 0 0 60 H V C CNN
+DRAW
+A 149 50 100 -894 0 0 1 0 N 150 -50 250 50
+A 150 49 100 6 900 0 1 0 N 250 50 150 150
+P 4 0 1 0  150 -50  -250 -50  -250 150  150 150 N
+X IN1 1 -450 100 200 R 50 50 1 1 I
+X IN2 2 -450 0 200 R 50 50 1 1 I
+X OUT 3 450 50 200 L 50 50 1 1 O
+ENDDRAW
+ENDDEF
+#
+#End Library

library/SubcircuitLibrary/54f64/3_and.cir

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+* C:\Users\malli\eSim\src\SubcircuitLibrary\3_and\3_and.cir
+
+* EESchema Netlist Version 1.1 (Spice format) creation date: 03/26/19 18:42:57
+
+* To exclude a component from the Spice Netlist add [Spice_Netlist_Enabled] user FIELD set to: N
+* To reorder the component spice node sequence add [Spice_Node_Sequence] user FIELD and define sequence: 2,1,0
+
+* Sheet Name: /
+U2  Net-_U1-Pad1_ Net-_U1-Pad2_ Net-_U2-Pad3_ d_and		
+U3  Net-_U2-Pad3_ Net-_U1-Pad3_ Net-_U1-Pad4_ d_and		
+U1  Net-_U1-Pad1_ Net-_U1-Pad2_ Net-_U1-Pad3_ Net-_U1-Pad4_ PORT		
+
+.end

library/SubcircuitLibrary/54f64/3_and.cir.out

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+* c:\users\malli\esim\src\subcircuitlibrary\3_and\3_and.cir
+
+* u2  net-_u1-pad1_ net-_u1-pad2_ net-_u2-pad3_ d_and
+* u3  net-_u2-pad3_ net-_u1-pad3_ net-_u1-pad4_ d_and
+* u1  net-_u1-pad1_ net-_u1-pad2_ net-_u1-pad3_ net-_u1-pad4_ port
+a1 [net-_u1-pad1_ net-_u1-pad2_ ] net-_u2-pad3_ u2
+a2 [net-_u2-pad3_ net-_u1-pad3_ ] net-_u1-pad4_ u3
+* Schematic Name: d_and, NgSpice Name: d_and
+.model u2 d_and(fall_delay=1.0e-9 input_load=1.0e-12 rise_delay=1.0e-9 ) 
+* Schematic Name: d_and, NgSpice Name: d_and
+.model u3 d_and(fall_delay=1.0e-9 input_load=1.0e-12 rise_delay=1.0e-9 ) 
+.tran 0e-00 0e-00 0e-00
+
+* Control Statements 
+.control
+run
+print allv > plot_data_v.txt
+print alli > plot_data_i.txt
+.endc
+.end

library/SubcircuitLibrary/54f64/3_and.pro

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+update=Wed Mar 18 19:54:53 2020
+version=1
+last_client=eeschema
+[general]
+version=1
+RootSch=
+BoardNm=
+[pcbnew]
+version=1
+LastNetListRead=
+UseCmpFile=1
+PadDrill=0.600000000000
+PadDrillOvalY=0.600000000000
+PadSizeH=1.500000000000
+PadSizeV=1.500000000000
+PcbTextSizeV=1.500000000000
+PcbTextSizeH=1.500000000000
+PcbTextThickness=0.300000000000
+ModuleTextSizeV=1.000000000000
+ModuleTextSizeH=1.000000000000
+ModuleTextSizeThickness=0.150000000000
+SolderMaskClearance=0.000000000000
+SolderMaskMinWidth=0.000000000000
+DrawSegmentWidth=0.200000000000
+BoardOutlineThickness=0.100000000000
+ModuleOutlineThickness=0.150000000000
+[cvpcb]
+version=1
+NetIExt=net
+[eeschema]
+version=1
+LibDir=../../../kicadSchematicLibrary
+[eeschema/libraries]
+LibName1=eSim_Analog
+LibName2=eSim_Devices
+LibName3=eSim_Digital
+LibName4=eSim_Hybrid
+LibName5=eSim_Miscellaneous
+LibName6=eSim_Plot
+LibName7=eSim_Power
+LibName8=eSim_Sources
+LibName9=eSim_Subckt
+LibName10=eSim_User

library/SubcircuitLibrary/54f64/3_and.sch

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+EESchema Schematic File Version 2
+LIBS:power
+LIBS:texas
+LIBS:intel
+LIBS:audio
+LIBS:interface
+LIBS:digital-audio
+LIBS:philips
+LIBS:display
+LIBS:cypress
+LIBS:siliconi
+LIBS:opto
+LIBS:atmel
+LIBS:contrib
+LIBS:valves
+LIBS:eSim_Analog
+LIBS:eSim_Devices
+LIBS:eSim_Digital
+LIBS:eSim_Hybrid
+LIBS:eSim_Miscellaneous
+LIBS:eSim_Plot
+LIBS:eSim_Power
+LIBS:eSim_PSpice
+LIBS:eSim_Sources
+LIBS:eSim_Subckt
+LIBS:eSim_User
+LIBS:3_and-cache
+EELAYER 25 0
+EELAYER END
+$Descr A4 11693 8268
+encoding utf-8
+Sheet 1 1
+Title ""
+Date ""
+Rev ""
+Comp ""
+Comment1 ""
+Comment2 ""
+Comment3 ""
+Comment4 ""
+$EndDescr
+$Comp
+L d_and U2
+U 1 1 5C9A24D8
+P 4250 2700
+F 0 "U2" H 4250 2700 60  0000 C CNN
+F 1 "d_and" H 4300 2800 60  0000 C CNN
+F 2 "" H 4250 2700 60  0000 C CNN
+F 3 "" H 4250 2700 60  0000 C CNN
+	1    4250 2700
+	1    0    0    -1  
+$EndComp
+$Comp
+L d_and U3
+U 1 1 5C9A2538
+P 5150 2900
+F 0 "U3" H 5150 2900 60  0000 C CNN
+F 1 "d_and" H 5200 3000 60  0000 C CNN
+F 2 "" H 5150 2900 60  0000 C CNN
+F 3 "" H 5150 2900 60  0000 C CNN
+	1    5150 2900
+	1    0    0    -1  
+$EndComp
+$Comp
+L PORT U1
+U 1 1 5C9A259A
+P 3050 2600
+F 0 "U1" H 3100 2700 30  0000 C CNN
+F 1 "PORT" H 3050 2600 30  0000 C CNN
+F 2 "" H 3050 2600 60  0000 C CNN
+F 3 "" H 3050 2600 60  0000 C CNN
+	1    3050 2600
+	1    0    0    -1  
+$EndComp
+$Comp
+L PORT U1
+U 2 1 5C9A25D9
+P 3050 2800
+F 0 "U1" H 3100 2900 30  0000 C CNN
+F 1 "PORT" H 3050 2800 30  0000 C CNN
+F 2 "" H 3050 2800 60  0000 C CNN
+F 3 "" H 3050 2800 60  0000 C CNN
+	2    3050 2800
+	1    0    0    -1  
+$EndComp
+$Comp
+L PORT U1
+U 3 1 5C9A260A
+P 3050 3100
+F 0 "U1" H 3100 3200 30  0000 C CNN
+F 1 "PORT" H 3050 3100 30  0000 C CNN
+F 2 "" H 3050 3100 60  0000 C CNN
+F 3 "" H 3050 3100 60  0000 C CNN
+	3    3050 3100
+	1    0    0    -1  
+$EndComp
+$Comp
+L PORT U1
+U 4 1 5C9A2637
+P 6900 2850
+F 0 "U1" H 6950 2950 30  0000 C CNN
+F 1 "PORT" H 6900 2850 30  0000 C CNN
+F 2 "" H 6900 2850 60  0000 C CNN
+F 3 "" H 6900 2850 60  0000 C CNN
+	4    6900 2850
+	-1   0    0    1   
+$EndComp
+Wire Wire Line
+	4700 2650 4700 2800
+Wire Wire Line
+	5600 2850 6650 2850
+Wire Wire Line
+	3800 2600 3300 2600
+Wire Wire Line
+	3800 2700 3300 2700
+Wire Wire Line
+	3300 2700 3300 2800
+Wire Wire Line
+	3300 3100 4700 3100
+Wire Wire Line
+	4700 3100 4700 2900
+Text Notes 3500 2600 0    60   ~ 12
+in1
+Text Notes 3450 2800 0    60   ~ 12
+in2\n
+Text Notes 3500 3100 0    60   ~ 12
+in3
+Text Notes 6100 2850 0    60   ~ 12
+out
+$EndSCHEMATC

library/SubcircuitLibrary/54f64/3_and.sub

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+* Subcircuit 3_and
+.subckt 3_and net-_u1-pad1_ net-_u1-pad2_ net-_u1-pad3_ net-_u1-pad4_ 
+* c:\users\malli\esim\src\subcircuitlibrary\3_and\3_and.cir
+* u2  net-_u1-pad1_ net-_u1-pad2_ net-_u2-pad3_ d_and
+* u3  net-_u2-pad3_ net-_u1-pad3_ net-_u1-pad4_ d_and
+a1 [net-_u1-pad1_ net-_u1-pad2_ ] net-_u2-pad3_ u2
+a2 [net-_u2-pad3_ net-_u1-pad3_ ] net-_u1-pad4_ u3
+* Schematic Name: d_and, NgSpice Name: d_and
+.model u2 d_and(fall_delay=1.0e-9 input_load=1.0e-12 rise_delay=1.0e-9 )
+* Schematic Name: d_and, NgSpice Name: d_and
+.model u3 d_and(fall_delay=1.0e-9 input_load=1.0e-12 rise_delay=1.0e-9 )
+* Control Statements
+
+.ends 3_and

library/SubcircuitLibrary/54f64/3_and_Previous_Values.xml

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+<KicadtoNgspice><source /><model><u2 name="type">d_and<field1 name="Enter Fall Delay (default=1.0e-9)" /><field2 name="Enter Input Load (default=1.0e-12)" /><field3 name="Enter Rise Delay (default=1.0e-9)" /></u2><u3 name="type">d_and<field4 name="Enter Fall Delay (default=1.0e-9)" /><field5 name="Enter Input Load (default=1.0e-12)" /><field6 name="Enter Rise Delay (default=1.0e-9)" /></u3></model><devicemodel /><subcircuit /><analysis><ac><field1 name="Lin">true</field1><field2 name="Dec">false</field2><field3 name="Oct">false</field3><field4 name="Start Frequency" /><field5 name="Stop Frequency" /><field6 name="No. of points" /><field7 name="Start Fre Combo">Hz</field7><field8 name="Stop Fre Combo">Hz</field8></ac><dc><field1 name="Source 1" /><field2 name="Start" /><field3 name="Increment" /><field4 name="Stop" /><field5 name="Operating Point">0</field5><field6 name="Start Combo">Volts or Amperes</field6><field7 name="Increment Combo">Volts or Amperes</field7><field8 name="Stop Combo">Volts or Amperes</field8><field9 name="Source 2" /><field10 name="Start" /><field11 name="Increment" /><field12 name="Stop" /><field13 name="Start Combo">Volts or Amperes</field13><field14 name="Increment Combo">Volts or Amperes</field14><field15 name="Stop Combo">Volts or Amperes</field15></dc><tran><field1 name="Start Time" /><field2 name="Step Time" /><field3 name="Stop Time" /><field4 name="Start Combo">Sec</field4><field5 name="Step Combo">Sec</field5><field6 name="Stop Combo">Sec</field6></tran></analysis></KicadtoNgspice>