Update interfaces.md with documentation for reranker functionality

.note/interfaces.md

@@ -514,6 +514,117 @@ rate_limits = handler.get_rate_limit_info()
 - **Description**: Gets information about the API's rate limits
 - **Returns**: Dict[str, Any] - Dictionary with rate limit information
 
+## Ranking Module
+
+### JinaReranker Class
+
+The `JinaReranker` class provides document reranking functionality using Jina AI's Reranker API.
+
+#### Initialization
+```python
+reranker = JinaReranker(
+    api_key=None,  # Optional, will use environment variable if not provided
+    model="jina-reranker-v2-base-multilingual",  # Default model
+    endpoint="https://api.jina.ai/v1/rerank"  # Default endpoint
+)
+```
+- **Description**: Initializes the JinaReranker with the specified API key, model, and endpoint
+- **Parameters**:
+  - `api_key` (Optional[str]): Jina AI API key (defaults to environment variable)
+  - `model` (str): The reranker model to use
+  - `endpoint` (str): The API endpoint
+- **Requirements**: JINA_API_KEY environment variable must be set if api_key is not provided
+- **Raises**: ValueError if API key is not available
+
+#### rerank
+```python
+reranked_docs = reranker.rerank(query, documents, top_n=None)
+```
+- **Description**: Reranks a list of documents based on their relevance to the query
+- **Parameters**:
+  - `query` (str): The query string
+  - `documents` (List[str]): List of document strings to rerank
+  - `top_n` (Optional[int]): Number of top documents to return (defaults to all)
+- **Returns**: List[Dict[str, Any]] - List of reranked documents with scores
+- **Example Return Format**:
+```json
+[
+  {
+    "index": 0,
+    "score": 0.95,
+    "document": "Document content here"
+  },
+  {
+    "index": 3,
+    "score": 0.82,
+    "document": "Another document content"
+  }
+]
+```
+
+#### get_jina_reranker
+```python
+reranker = get_jina_reranker()
+```
+- **Description**: Factory function to get a JinaReranker instance with configuration from the config file
+- **Returns**: JinaReranker - Initialized reranker instance
+- **Raises**: ValueError if API key is not available
+
+### Usage Examples
+
+#### Basic Usage
+```python
+from ranking.jina_reranker import JinaReranker
+
+reranker = JinaReranker()
+query = "What is quantum computing?"
+documents = [
+    "Quantum computing is a computation system that uses quantum mechanics.",
+    "Classical computers use bits while quantum computers use qubits.",
+    "Artificial intelligence is transforming various industries."
+]
+
+reranked = reranker.rerank(query, documents)
+for doc in reranked:
+    print(f"Score: {doc['score']}, Document: {doc['document']}")
+```
+
+#### Integration with ResultCollector
+```python
+from execution.result_collector import ResultCollector
+from ranking.jina_reranker import get_jina_reranker
+
+# Initialize components
+reranker = get_jina_reranker()
+collector = ResultCollector(reranker=reranker)
+
+# Process search results with reranking
+reranked_results = collector.process_results(
+    search_results,
+    dedup=True,
+    max_results=20,
+    use_reranker=True
+)
+```
+
+#### Testing
+```python
+# Simple test script
+import json
+from ranking.jina_reranker import get_jina_reranker
+
+reranker = get_jina_reranker()
+query = "What is quantum computing?"
+documents = [
+    "Quantum computing is a type of computation that harnesses quantum mechanics.",
+    "Classical computers use bits, while quantum computers use qubits.",
+    "Machine learning is a subset of artificial intelligence."
+]
+
+reranked = reranker.rerank(query, documents)
+print(json.dumps(reranked, indent=2))
+```
+
 ## Search Execution Testing
 
 The search execution module has been tested to ensure it correctly executes search queries across multiple search engines and processes the results.