diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..537172b
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,32 @@
+# Changelog
+
+All notable changes to **ecu-framework** are documented in this file.
+
+The format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+The single source of truth for the current version is `[project.version]` in
+`pyproject.toml`; at runtime it is exposed as `ecu_framework.__version__`.
+
+## [Unreleased]
+
+### Added
+- `pyproject.toml` — the framework is now `pip install -e .`-able.
+- Top-level `ecu_framework.__version__` is read from installed package metadata
+  via `importlib.metadata`, with a `"0.0.0+local"` fallback for source checkouts
+  that have not been `pip install`-ed.
+
+### Removed
+- Per-subpackage `__version__` strings on `lin`, `power`, `flashing`. Versioning
+  is centralized on the distribution; subpackages no longer carry their own.
+
+## [0.1.0] - 2026-05-14
+
+Initial tagged baseline. The framework already supports:
+
+- LIN abstraction (`LinInterface`, `LinFrame`) with mock, MUM, and deprecated BabyLIN adapters
+- Owon PSU control with cross-platform serial-port resolution
+- UDS-over-LIN flashing scaffold (`HexFlasher`)
+- Pytest plugin: requirement traceability, HTML report metadata, CI summary
+- LDF parsing helpers and generated per-frame `pack`/`unpack` APIs
+- Raspberry Pi deployment recipe and a Docker image for mock-only CI
diff --git a/ecu_framework/__init__.py b/ecu_framework/__init__.py
index 3fa41f5..24d7698 100644
--- a/ecu_framework/__init__.py
+++ b/ecu_framework/__init__.py
@@ -4,12 +4,24 @@ ECU Tests framework package.
 Provides:
 - config: YAML configuration loader and types
 - lin: LIN interface abstraction and adapters (mock, MUM, and the deprecated BabyLIN)
+- power: Owon PSU control and cross-platform serial-port resolution
+- flashing: UDS-over-LIN ECU programming scaffold (HexFlasher)
 
 Package version is exposed as __version__.
 """
 __all__ = [
     "config",
     "lin",
+    "power",
+    "flashing",
 ]
 
-__version__ = "0.1.0"
+from importlib.metadata import PackageNotFoundError, version as _pkg_version
+
+try:
+    __version__ = _pkg_version("ecu-framework")
+except PackageNotFoundError:
+    # Running from a source checkout without `pip install -e .`
+    __version__ = "0.0.0+local"
+
+del PackageNotFoundError, _pkg_version
diff --git a/ecu_framework/lin/__init__.py b/ecu_framework/lin/__init__.py
index 46dd9c6..98fee04 100644
--- a/ecu_framework/lin/__init__.py
+++ b/ecu_framework/lin/__init__.py
@@ -18,4 +18,4 @@ __all__ = [
     "LinInterface",
     "LinFrame",
     "MockBabyLinInterface",
-]
+]
\ No newline at end of file
diff --git a/ecu_framework/power/__init__.py b/ecu_framework/power/__init__.py
index fb1756e..361ca96 100644
--- a/ecu_framework/power/__init__.py
+++ b/ecu_framework/power/__init__.py
@@ -27,4 +27,4 @@ __all__ = [
     "resolve_port",
     "windows_com_to_linux",
     "linux_serial_to_windows",
-]
+]
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..3053390
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,71 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+
+[project]
+name = "ecu-framework"
+version = "0.1.0"
+description = "ECU testing framework: LIN abstraction (mock / MUM / BabyLIN), Owon PSU control, UDS-over-LIN flashing scaffold, and pytest plugins."
+readme = "README.md"
+requires-python = ">=3.10"
+authors = [
+    { name = "Mohamed Elsabagh"    , email = "mohamed.elsabagh@teqanylogix.com"    },
+    { name = "Samer Boules"        , email = "samer.boules@teqanylogix.com"        },
+    { name = "Hosam-Eldin Mosatafa", email = "hosam-eldin.mostafa@teqanylogix.com" },
+]
+keywords = ["ecu", "lin", "automotive", "testing", "pytest", "mum", "babylin"]
+classifiers = [
+    "Development Status :: 3 - Alpha",
+    "Framework :: Pytest",
+    "Intended Audience :: Developers",
+    "Operating System :: POSIX :: Linux",
+    "Operating System :: Microsoft :: Windows",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Software Development :: Testing",
+]
+
+# Core runtime deps. Hardware-only deps (Melexis pylin / pymumclient,
+# BabyLIN SDK) are intentionally NOT listed — those install paths are
+# documented separately and are not needed for mock-only usage.
+dependencies = [
+    "pyyaml>=6,<7",
+    "pyserial>=3,<4",
+    "ldfparser>=0.26,<1",
+    "colorlog>=6,<7",
+    "typing-extensions>=4.12,<5",
+    "intelhex>=2.1",
+]
+
+[project.optional-dependencies]
+# Testing extras — install with: pip install -e ".[test]"
+test = [
+    "pytest>=8,<9",
+    "pytest-xdist>=3.6,<4",
+    "pytest-html>=4,<5",
+    "pytest-cov>=5,<6",
+]
+# Pull in the transitive deps the Melexis stack (pylin / pymumclient) needs.
+# The Melexis wheels themselves come from the bundled tarball, not PyPI.
+melexis-transitive = [
+    "six>=1.16,<2",
+    "pyparsing>=3.0.9,<3.1",
+    "natsort>=7.1.0",
+    "pygdbmi>=0.9,<0.10",
+    "crcmod>=1.7",
+    "packaging>=20.3",
+    "zeroconf>=0.37.0",
+]
+
+[tool.hatch.build.targets.wheel]
+packages = ["ecu_framework"]
+
+[tool.hatch.build.targets.sdist]
+include = [
+    "/ecu_framework",
+    "/README.md",
+    "/CHANGELOG.md",
+    "/requirements.txt",
+]