fix: Update MCP CI workflows to use dependency groups

- Change from --extra dev to --group dev in CI workflows
- Remove duplicate [dependency-groups] header in pyproject.toml
- Fix CI failures for format-and-lint and test-mcp-server jobs

.github/workflows/mcp-server-lint.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Install MCP server dependencies
         run: |
           cd mcp_server
-          uv sync --extra dev
+          uv sync --group dev
 
       - name: Add ruff to dependencies
         run: |

.github/workflows/mcp-server-tests.yml

@@ -61,7 +61,7 @@ jobs:
       - name: Install MCP server dependencies
         run: |
           cd mcp_server
-          uv sync --extra dev
+          uv sync --group dev
 
       - name: Run configuration tests
         run: |

mcp_server/pyproject.toml

@@ -23,8 +23,6 @@ providers = [
     "voyageai>=0.2.3",
     "sentence-transformers>=2.0.0",
 ]
-
-[dependency-groups]
 dev = [
     "graphiti-core>=0.16.0",
     "httpx>=0.28.1",