Improve retry configuration and remove yfinance dependency

README.md

@@ -59,7 +59,7 @@ transport:
 		connect_seconds: 10.0
 		read_seconds: 120.0
 	retry:
-		max_attempts: 10
+		max_attempts: 20
 		backoff_seconds: 2
 ```
 
@@ -174,7 +174,7 @@ The current V1 forecast request contract is:
 
 V1 column descriptors support the server fields `name`, `modality`, `role`, `nullable`, `vocabulary_size`, `level_count`, `mapping`, `lower_bound`, `upper_bound`, `time_value_kind`, `time_value_scale_seconds`, `time_value_use_local_normalized_time`, `time_value_calendar_id`, and `time_value_timezone`.
 
-DataFrame helpers and the notebook examples are available through one optional extra that pulls in `pandas` and `yfinance` (the latter powers the Yahoo Finance download in `notebooks/forecast_trading.ipynb`):
+DataFrame helpers and the notebook examples are available through one optional extra that pulls in `pandas`:
 
 ```bash
 uv add "jointfm-client[notebooks]"

config.sample.yaml

@@ -29,12 +29,13 @@ transport:
     connect_seconds: 10.0
     read_seconds: 120.0
   retry:
-    max_attempts: 10
+    max_attempts: 20
     backoff_seconds: 2
     max_backoff_seconds: 60.0
     status_codes:
       - 408
       - 429
+      - 470
       - 500
       - 502
       - 503

pyproject.toml

@@ -45,7 +45,6 @@ jointfm-client = "jointfm_client.cli:main"
 [project.optional-dependencies]
 notebooks = [
     "pandas>=3.0.2",
-    "yfinance>=0.2,<1",
 ]
 
 [dependency-groups]

src/jointfm_client/configuration.py

@@ -144,10 +144,13 @@ def _validate_positive_finite(cls, value: float) -> float:
 class RetryConfig(_ConfigModel):
     """Default retry policy for transient HTTP failures."""
 
-    max_attempts: int = 10
+    max_attempts: int = 20
     backoff_seconds: float = 2
     max_backoff_seconds: float = 60.0
-    status_codes: tuple[int, ...] = (408, 429, 500, 502, 503, 504)
+    # 470 is DataRobot's non-standard "prediction was not successful" code,
+    # returned while a deployment's custom model is stopped or still warming
+    # up; retrying bridges warm-up windows after a deployment (re)start.
+    status_codes: tuple[int, ...] = (408, 429, 470, 500, 502, 503, 504)
 
     @field_validator("max_attempts")
     @classmethod

tests/test_notebooks.py

@@ -132,7 +132,6 @@ def test_example_notebooks_start_with_bootstrap_cell() -> None:
         "forecast_mean.ipynb",
         "forecast_quantiles.ipynb",
         "forecast_samples.ipynb",
-        "forecast_trading.ipynb",
         "pandas_result_conversion.ipynb",
         "predict_json.ipynb",
         "service_health.ipynb",