feat: Enhance Pinecone Index configuration for local and cloud environments

- Update PineconeIndex to handle both local and cloud Pinecone index configurations
- Add base_url default to Pinecone cloud API
- Improve logging for base URL selection
- Update documentation notebook to reflect new configuration approach

CONTRIBUTING.md

@@ -13,7 +13,7 @@ Please follow these guidelines when making a contribution:
         - Navigating to /semantic-router.
         - Running `make lint` to fix linting issues.
         - Running `black .` to fix `black` linting issues.
-        - Running `ruff . --fix` to fix `ruff` linting issues (where possible, others may need manual changes).
+        - Running `ruff check . --fix` to fix `ruff` linting issues (where possible, others may need manual changes).
         - Running `mypy .` and then fixing any of the issues that are raised.
         - Confirming the linters pass using `make lint` again.
     - Ensure that, for any new code, new [PyTests are written](https://github.com/aurelio-labs/semantic-router/tree/main/tests/unit). If any code is removed, then ensure that corresponding PyTests are also removed. Finally, ensure that all remaining PyTests pass using `pytest ./tests` (to avoid integration tests you can run `pytest ./tests/unit`.

semantic_router/index/pinecone.py

@@ -137,7 +137,7 @@ class PineconeIndex(BaseIndex):
         region: str = "us-east-1",
         host: str = "",
         namespace: Optional[str] = "",
-        base_url: Optional[str] = "",
+        base_url: Optional[str] = "https://api.pinecone.io",
         init_async_index: bool = False,
     ):
         super().__init__()
@@ -151,7 +151,9 @@ class PineconeIndex(BaseIndex):
             "User-Agent": "source_tag=semanticrouter",
         }
 
-        self.base_url = base_url or os.getenv("PINECONE_API_BASE_URL")
+        if base_url is not None or os.getenv("PINECONE_API_BASE_URL"):
+            logger.info("Using pinecone remote API.")
+            self.base_url = base_url or os.getenv("PINECONE_API_BASE_URL")
 
         if self.base_url and "api.pinecone.io" in self.base_url:
             self.headers["X-Pinecone-API-Version"] = "2024-07"