diff --git a/AGENTS.md b/AGENTS.md
index 5e1751b..915d173 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -27,7 +27,9 @@ echo '{"a":1}' | uv run rp  # Read from stdin
 ```
 
 ### Testing
-This project does not yet have automated tests. When adding tests:
+
+Run tests with pytest:
+
 ```bash
 # Run all tests
 uv run pytest
@@ -35,8 +37,11 @@ uv run pytest
 # Run a single test file
 uv run pytest tests/test_detect.py
 
+# Run a single test class
+uv run pytest tests/test_detect.py::TestExplicitType
+
 # Run a single test function
-uv run pytest tests/test_detect.py::test_detect_json_from_content
+uv run pytest tests/test_detect.py::TestExplicitType::test_explicit_overrides_everything
 
 # Run with verbose output
 uv run pytest -v
@@ -160,32 +165,76 @@ Version metadata must stay in sync between `pyproject.toml` and `src/rp/__init__
 
 ## Project Structure
 ```
-rich-viewer/
-├── pyproject.toml      # Project config, dependencies, entry point
-├── uv.lock             # Lockfile (commit this)
+rich-print/
+├── pyproject.toml # Project config, dependencies, entry point
+├── uv.lock # Lockfile (commit this)
 ├── .gitignore
 ├── README.md
-├── AGENTS.md           # This file
-└── src/
-    └── rp/
-        ├── __init__.py # Version metadata
-        ├── cli.py      # Typer CLI entry point
-        ├── detect.py   # File type detection
-        ├── render.py   # Rendering logic
-        ├── pager.py    # Pager integration
-        └── py.typed    # PEP 561 marker
+├── AGENTS.md # This file
+├── src/
+│   └── rp/
+│       ├── __init__.py # Version metadata
+│       ├── cli.py # Typer CLI entry point
+│       ├── detect.py # File type detection
+│       ├── render.py # Rendering logic
+│       ├── pager.py # Pager integration
+│       └── py.typed # PEP 561 marker
+└── tests/
+    ├── conftest.py
+    ├── test_cli.py
+    ├── test_detect.py
+    ├── test_render.py
+    └── test_pager.py
 ```
 
 ## Dependencies
+
 - `rich>=13.0` — Terminal rendering (Markdown, JSON, Syntax)
 - `typer>=0.12` — CLI framework
 
-Runtime dependencies. Dev dependencies: `ruff>=0.9`, `mypy>=1.14`.
+Runtime dependencies. Dev dependencies: `ruff>=0.9`, `mypy>=1.14`, `pytest>=8.0`, `pytest-cov>=5.0`.
 
-## Git Conventions
-- Write clear, imperative commit messages
-- Reference issues/PRs when applicable
-- Keep commits focused (one logical change per commit)
+## Git Workflow
+
+### Branches
+
+- **Long-lived branches**
+  - `main` — stable release branch; only updated via merges from `dev`
+  - `dev` — integration branch for day-to-day development
+- **Short-lived branches**
+  - `feature/<topic>` — new features
+  - `fix/<topic>` — bug fixes
+  - `docs/<topic>` — documentation changes
+  - `chore/<topic>` — maintenance, tooling, CI
+  - `refactor/<topic>` — refactoring without behavior change
+  - `test/<topic>` — adding or improving tests
+
+### Branching Rules
+
+- Start normal work from the latest `dev`
+- Keep branches short-lived and focused on one logical change
+- Do not commit directly to `main` or `dev` unless explicitly requested
+- Delete the short-lived branch after it is merged
+
+### Pull Requests
+
+- Open normal PRs into `dev`, not `main`
+- Use **squash merge** for PRs into `dev`
+- Ensure CI passes before merging
+- Keep PRs focused; split unrelated changes into separate PRs
+
+### Release Flow
+
+- Merge `dev` into `main` when changes are ready to release
+- Tag releases from `main` with version numbers (e.g., `v1.2.3`)
+- If a hotfix is made directly against `main`, merge it back to `dev`
+
+### Agent Expectations
+
+- Unless the user says otherwise, assume new work should target `dev`
+- If a branch must be created, follow the naming rules above
+- Do not create or push branches automatically unless the user asks
+- Do not commit changes unless the user explicitly asks
 
 ## Notes for Agents
 - This is a small, focused CLI tool — prefer simplicity over abstraction
diff --git a/README.md b/README.md
index d536232..f0dc286 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,14 @@ rp --version
 uv sync
 ```
 
+### Testing
+
+```bash
+uv run pytest           # Run all tests
+uv run pytest -v        # Verbose output
+uv run pytest tests/test_detect.py  # Single file
+```
+
 ### Linting & Type Checking
 
 ```bash
@@ -86,6 +94,13 @@ uv run mypy src/
 uv build
 ```
 
+## Workflow
+
+- `main` — stable release branch
+- `dev` — integration branch for day-to-day work
+- Short-lived branches: `feature/<topic>`, `fix/<topic>`, `docs/<topic>`
+- Open PRs into `dev` (squash merge); merge `dev` to `main` for releases
+
 ## License
 
 MIT