feat: Implement CodexLens multi-provider embedding rotation management

- Added functions to get and update CodexLens embedding rotation configuration.
- Introduced functionality to retrieve enabled embedding providers for rotation.
- Created endpoints for managing rotation configuration via API.
- Enhanced dashboard UI to support multi-provider rotation configuration.
- Updated internationalization strings for new rotation features.
- Adjusted CLI commands and embedding manager to support increased concurrency limits.
- Modified hybrid search weights for improved ranking behavior.

codex-lens/src/codexlens/cli/commands.py

@@ -103,12 +103,12 @@ def init(
         "-l",
         help="Limit indexing to specific languages (repeat or comma-separated).",
     ),
-    workers: Optional[int] = typer.Option(None, "--workers", "-w", min=1, max=16, help="Parallel worker processes (default: auto-detect based on CPU count, max 16)."),
+    workers: Optional[int] = typer.Option(None, "--workers", "-w", min=1, max=32, help="Parallel worker processes (default: auto-detect based on CPU count, max 32)."),
     force: bool = typer.Option(False, "--force", "-f", help="Force full reindex (skip incremental mode)."),
     no_embeddings: bool = typer.Option(False, "--no-embeddings", help="Skip automatic embedding generation (if semantic deps installed)."),
     embedding_backend: str = typer.Option("fastembed", "--embedding-backend", help="Embedding backend: fastembed (local) or litellm (remote API)."),
     embedding_model: str = typer.Option("code", "--embedding-model", help="Embedding model: profile name for fastembed (fast/code/multilingual/balanced) or model name for litellm (e.g. text-embedding-3-small)."),
-    max_workers: int = typer.Option(1, "--max-workers", min=1, max=16, help="Max concurrent API calls for embedding generation. Recommended: 4-8 for litellm backend."),
+    max_workers: int = typer.Option(1, "--max-workers", min=1, max=32, help="Max concurrent API calls for embedding generation. Recommended: 4-8 for litellm backend."),
     json_mode: bool = typer.Option(False, "--json", help="Output JSON response."),
     verbose: bool = typer.Option(False, "--verbose", "-v", help="Enable debug logging."),
 ) -> None:
@@ -351,7 +351,7 @@ def search(
       Use 'codexlens embeddings-generate' to create embeddings first.
 
     Hybrid Mode:
-      Default weights: exact=0.4, fuzzy=0.3, vector=0.3
+      Default weights: exact=0.3, fuzzy=0.1, vector=0.6
       Use --weights to customize (e.g., --weights 0.5,0.3,0.2)
 
     Examples:
@@ -1852,7 +1852,7 @@ def embeddings_generate(
         "--max-workers",
         "-w",
         min=1,
-        max=16,
+        max=32,
         help="Max concurrent API calls. Recommended: 4-8 for litellm backend. Default: 1 (sequential).",
     ),
     json_mode: bool = typer.Option(False, "--json", help="Output JSON response."),

codex-lens/src/codexlens/cli/embedding_manager.py

@@ -331,7 +331,7 @@ def generate_embeddings(
     if max_workers is None:
         if embedding_backend == "litellm":
             if endpoint_count > 1:
-                max_workers = min(endpoint_count * 2, 16)  # Cap at 16 workers
+                max_workers = min(endpoint_count * 2, 32)  # Cap at 32 workers
             else:
                 max_workers = 4
         else:
@@ -806,7 +806,7 @@ def generate_embeddings_recursive(
     if max_workers is None:
         if embedding_backend == "litellm":
             if endpoint_count > 1:
-                max_workers = min(endpoint_count * 2, 16)
+                max_workers = min(endpoint_count * 2, 32)
             else:
                 max_workers = 4
         else: