Fix multiply-defined LaTeX labels for figures

Pandoc extracts \label{} from caption text and also auto-generates a
figure label, causing the label to be defined twice. Remove explicit
\label{} from captions and replace \autoref{} with plain text references.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: TomeHirata

paper/paper.md

@@ -60,13 +60,13 @@ In the R ecosystem, packages like `qte` provide quantile treatment effect estima
 
 All estimators implement a consistent API with three primary methods: `predict_dte()` for distributional treatment effects, `predict_pte()` for probability treatment effects over intervals, and `predict_qte()` for quantile treatment effects. The adjusted estimators use K-fold cross-fitting to prevent overfitting and support both single-task and multi-task learning modes [@hirata2025efficientscalableestimationdistributional] for computational efficiency. Bootstrap methods provide confidence intervals with multiple variance estimation approaches.
 
-![Distributional treatment effects for the Hillstrom email marketing dataset [@hillstrom2008], comparing Women's vs Men's email campaigns. The simple estimator (left, purple) and ML-adjusted estimator (right, green) show that adjustment substantially tightens confidence bands, demonstrating the variance reduction benefit of regression adjustment.\label{fig:hillstrom}](hillstrom_dte.png)
+![Distributional treatment effects for the Hillstrom email marketing dataset [@hillstrom2008], comparing Women's vs Men's email campaigns. The simple estimator (left, purple) and ML-adjusted estimator (right, green) show that adjustment substantially tightens confidence bands, demonstrating the variance reduction benefit of regression adjustment.](hillstrom_dte.png)
 
-![Local distributional treatment effects for emergency department costs in the Oregon Health Insurance Experiment [@finkelstein2012], estimated using `SimpleLocalDistributionEstimator` (left) and `AdjustedLocalDistributionEstimator` (right). Health insurance coverage shifts the distribution of ED costs, with ML adjustment again yielding narrower confidence intervals.\label{fig:oregon}](oregon_ldte_costs_comparison.png)
+![Local distributional treatment effects for emergency department costs in the Oregon Health Insurance Experiment [@finkelstein2012], estimated using `SimpleLocalDistributionEstimator` (left) and `AdjustedLocalDistributionEstimator` (right). Health insurance coverage shifts the distribution of ED costs, with ML adjustment again yielding narrower confidence intervals.](oregon_ldte_costs_comparison.png)
 
 # Research Impact Statement
 
-The methods implemented in `dte_adj` have been published at top machine learning venues: ICML 2024 [@byambadalai2024estimatingdistributionaltreatmenteffects] and ICML 2025 [@byambadalai2025efficientestimationdistributionaltreatment]. The package has been used internally at CyberAgent, Inc. for analyzing A/B tests where distributional impacts are critical, such as evaluating interventions on user engagement metrics where tail behavior matters more than averages. The documentation includes tutorials demonstrating applications to the Hillstrom email marketing dataset (\autoref{fig:hillstrom}) and the Oregon Health Insurance Experiment (\autoref{fig:oregon}), facilitating adoption by researchers in economics, marketing, and healthcare.
+The methods implemented in `dte_adj` have been published at top machine learning venues: ICML 2024 [@byambadalai2024estimatingdistributionaltreatmenteffects] and ICML 2025 [@byambadalai2025efficientestimationdistributionaltreatment]. The package has been used internally at CyberAgent, Inc. for analyzing A/B tests where distributional impacts are critical, such as evaluating interventions on user engagement metrics where tail behavior matters more than averages. The documentation includes tutorials demonstrating applications to the Hillstrom email marketing dataset (Figure 1) and the Oregon Health Insurance Experiment (Figure 2), facilitating adoption by researchers in economics, marketing, and healthcare.
 
 # AI Usage Disclosure