fix: update CI setup and installation instructions in README

- change how we use pip to install deps properly

Author: funkatron

.github/workflows/ci.yml

@@ -24,7 +24,8 @@ jobs:
       - name: Install dependencies
         run: |
           uv sync
-          uv sync requirements-dev.txt
+          uv pip install .
+          uv pip install .[dev]
 
       - name: Run tests
         run: |

README.md

@@ -35,8 +35,9 @@ Development Installation
 
 3. Install development dependencies:
     ```bash
-    pip install -e ".[dev]"
-    pip install -r pyproject.toml -r requirements-dev.txt
+    pip install .
+    pip install .[dev]
+    pip install -r pyproject.toml
     ```
 
 Usage