fix: rag tool embeddings config

* fix: ensure config is not flattened, add tests

* chore: refactor inits to model_validator

* chore: refactor rag tool config parsing

* chore: add initial docs

* chore: add additional validation aliases for provider env vars

* chore: add solid docs

* chore: move imports to top

* fix: revert circular import

* fix: lazy import qdrant-client

* fix: allow collection name config

* chore: narrow model names for google

* chore: update additional docs

* chore: add backward compat on model name aliases

* chore: add tests for config changes

docs/en/tools/search-research/githubsearchtool.mdx

@@ -75,10 +75,10 @@ tool = GithubSearchTool(
             ),
         ),
         embedder=dict(
-            provider="google", # or openai, ollama, ...
+            provider="google-generativeai", # or openai, ollama, ...
             config=dict(
-                model="models/embedding-001",
-                task_type="retrieval_document",
+                model_name="gemini-embedding-001",
+                task_type="RETRIEVAL_DOCUMENT",
                 # title="Embeddings",
             ),
         ),