chore: Use new VSCode Python env extention

https://devblogs.microsoft.com/python/python-in-visual-studio-code-february-2026-release/

Author: eliasbenb

.devcontainer/devcontainer.json

@@ -15,7 +15,10 @@
                 "ms-python.python",
                 "tamasfe.even-better-toml",
                 "yzhang.markdown-all-in-one"
-            ]
+            ],
+            "settings": {
+                "python-envs.terminal.autoActivationType": "shellStartup"
+            }
         }
     },
     "postCreateCommand": "uv sync --all-extras --all-groups --all-packages",

.vscode/settings.json

@@ -22,13 +22,10 @@
     "editor.insertSpaces": true,
     "editor.tabSize": 4,
     "prettier.tabWidth": 4,
-    "python.defaultInterpreterPath": "${workspaceFolder}/.venv/bin/python",
-    "python.envFile": "",
+    "python.useEnvironmentsExtension": true,
     "python.languageServer": "None",
-    "python.terminal.activateEnvInCurrentTerminal": true,
     "python.testing.pytestArgs": ["tests"],
     "python.testing.pytestEnabled": true,
-    "python.testing.unittestEnabled": false,
     "ruff.fixAll": true,
     "ruff.importStrategy": "fromEnvironment",
     "ruff.organizeImports": true