Restructure package for domain-driven design

Reorganise package structure to improve separation of concerns:
- instruments/ - SCPI, transport, drivers, interfaces, factory
- simulation/ - physics engine, virtual instruments, server
- framework/ - test runner, logger, limits, context
- tests/ - thermal/, electrical/ (DVT test implementations)
- data/ - repository, models
- reporting/ - generator, templates
- app/ - CLI, config, dashboard

This structure enables:
- Reusable instruments package for other test suites
- Clear separation of simulation (dev) vs production code
- Domain-focused package organisation

Updated documentation to reflect new paths.

src/py_dvt_ate/app/__init__.py

@@ -0,0 +1,5 @@
+"""Application entry points.
+
+Contains CLI, dashboard, and configuration loading for the
+py_dvt_ate application.
+"""

src/py_dvt_ate/app/dashboard/__init__.py

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+"""Streamlit dashboard for real-time monitoring.
+
+Provides visualisation of instrument status, test progress,
+and historical results.
+"""

src/py_dvt_ate/cli/__init__.py

@@ -1 +0,0 @@
-"""Command-line interface."""

src/py_dvt_ate/config/__init__.py

@@ -1 +0,0 @@
-"""Configuration handling."""

src/py_dvt_ate/dashboard/__init__.py

@@ -1 +0,0 @@
-"""Streamlit dashboard."""

src/py_dvt_ate/drivers/__init__.py

@@ -1 +0,0 @@
-"""Instrument SCPI drivers."""

src/py_dvt_ate/executive/__init__.py

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-"""Test execution framework."""

src/py_dvt_ate/framework/__init__.py

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+"""Test execution framework.
+
+Provides test sequencing, measurement logging, limit checking,
+and runtime context management for DVT characterisation tests.
+"""

src/py_dvt_ate/hal/__init__.py

@@ -1 +0,0 @@
-"""Hardware Abstraction Layer."""

src/py_dvt_ate/hal/impl/__init__.py

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-"""HAL implementations."""

src/py_dvt_ate/instruments/__init__.py

@@ -1 +1,9 @@
-"""Virtual instrument implementations."""
+"""Instrument control package.
+
+This package provides everything needed to communicate with lab instruments:
+- Protocol interfaces (IThermalChamber, IPowerSupply, IMultimeter)
+- SCPI command parsing
+- Transport layer (TCP, VISA)
+- Instrument drivers
+- Factory for creating configured instrument sets
+"""

src/py_dvt_ate/instruments/drivers/__init__.py

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+"""SCPI driver implementations for lab instruments.
+
+Each driver translates high-level operations into SCPI commands
+and handles responses from instruments.
+"""

src/py_dvt_ate/instruments/transport/__init__.py

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+"""Transport layer for instrument communication.
+
+Provides connection abstractions for different backends:
+- TCP sockets (for simulation server)
+- PyVISA (for real instruments)
+"""

src/py_dvt_ate/physics/__init__.py

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-"""Physics simulation engine."""

src/py_dvt_ate/physics/dut/__init__.py

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-"""Device Under Test models."""

src/py_dvt_ate/reporting/__init__.py

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+"""Report generation.
+
+Generates test reports from stored data in various formats
+including PDF and HTML.
+"""

src/py_dvt_ate/server/__init__.py

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-"""Simulation server."""

src/py_dvt_ate/simulation/__init__.py

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+"""Physics simulation package.
+
+Provides virtual instruments backed by a coupled thermal-electrical
+physics engine. Used for development and testing without real hardware.
+"""

src/py_dvt_ate/simulation/physics/__init__.py

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+"""Physics engine for thermal-electrical simulation.
+
+Implements coupled thermal and electrical domain models with
+realistic time constants and temperature-dependent behaviour.
+"""

src/py_dvt_ate/simulation/physics/models/__init__.py

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+"""Device Under Test (DUT) models.
+
+Provides thermal and electrical models for various device types
+including LDO regulators, op-amps, and other components.
+"""

src/py_dvt_ate/simulation/virtual/__init__.py

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+"""Virtual instrument implementations.
+
+SCPI-compliant virtual instruments that respond like real hardware
+but are backed by the physics simulation engine.
+"""

src/py_dvt_ate/tests/__init__.py

@@ -1 +1,6 @@
-"""DVT test implementations."""
+"""DVT test implementations.
+
+Contains characterisation test suites organised by category:
+- thermal/ - Temperature-related tests (TempCo, etc.)
+- electrical/ - Electrical tests (load regulation, etc.)
+"""

src/py_dvt_ate/tests/electrical/__init__.py

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+"""Electrical characterisation tests.
+
+Tests for electrical performance including load regulation,
+line regulation, and output accuracy.
+"""

src/py_dvt_ate/tests/thermal/__init__.py

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+"""Thermal characterisation tests.
+
+Tests related to temperature behaviour including temperature
+coefficient (TempCo) measurements and thermal stability.
+"""

src/py_dvt_ate/transport/__init__.py

@@ -1 +0,0 @@
-"""Communication layer."""