feat: add official mem0 CLI (Python & TypeScript) (#4575)

cli/python/development.md

@@ -0,0 +1,76 @@
+# Development
+
+## Prerequisites
+
+- Python **3.10+**
+
+## Setup
+
+All commands below should be run from the `python/` directory:
+
+```bash
+cd python
+```
+
+## Install local (editable) + run
+
+```bash
+python3 -m venv .venv
+source .venv/bin/activate
+python -m pip install -U pip
+
+# Install in editable mode
+pip install -e .
+
+# Run
+mem0 --help
+mem0 version
+```
+
+> **After moving to the new directory structure:** If you previously had the CLI installed from the old repo root, you need to re-run `pip install -e .` from inside the `python/` directory to pick up the new location.
+
+## Run without installing globally
+
+This still installs the package into your active virtualenv (editable), but you can invoke it via module execution:
+
+```bash
+source .venv/bin/activate
+pip install -e .
+python -m mem0_cli --help
+```
+
+## Optional extras
+
+### OSS integration extras
+
+```bash
+pip install -e ".[oss]"
+```
+
+### Dev tools (tests/lint)
+
+```bash
+pip install -e ".[dev]"
+```
+
+## Run tests
+
+```bash
+pip install -e ".[dev]"
+
+# Run all tests
+pytest
+
+# Run a specific test file
+pytest tests/test_cli_integration.py
+
+# Run a single test
+pytest -k test_help
+```
+
+## Lint
+
+```bash
+ruff check .
+ruff format .
+```