docs: Add detailed use case sections for training, inference, and MLOps

Add comprehensive documentation extracted from V3 example notebooks
covering all training, inference, and MLOps use cases with V3 code
examples. New sections include local container training, distributed
training, hyperparameter management, JumpStart, custom InferenceSpec,
model optimization, inference pipelines, processing jobs, batch
transform, model registry, Clarify, EMR Serverless, MLflow integration,
and lineage tracking. Each section includes red NEW highlights for
change detection and expanded V2-to-V3 migration tables.

Author: nargokul

docs/_static/custom.css

@@ -179,6 +179,11 @@ p {
     padding-left: 16px;
     margin-left: 0;
 }
+section.new-content {
+    border-left: 4px solid #dc2626;
+    padding-left: 16px;
+    margin-left: 0;
+}
 .new-content-label::before {
     content: "NEW";
     background: #dc2626;
@@ -190,3 +195,14 @@ p {
     margin-right: 8px;
     vertical-align: middle;
 }
+p.new-content-label::before {
+    content: "NEW";
+    background: #dc2626;
+    color: white;
+    font-size: 0.7em;
+    font-weight: 700;
+    padding: 2px 8px;
+    border-radius: 3px;
+    margin-right: 8px;
+    vertical-align: middle;
+}

docs/ml_ops/index.rst

@@ -249,7 +249,7 @@ ML Operations Examples
 .. rst-class:: new-content
 
 E2E Pipeline with Model Registry
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------------
 
 .. rst-class:: new-content-label
 
@@ -297,7 +297,7 @@ Build a SageMaker Pipeline that preprocesses data, trains a model, and registers
 .. rst-class:: new-content
 
 Processing Jobs
-~~~~~~~~~~~~~~~~
+----------------
 
 .. rst-class:: new-content-label
 
@@ -326,7 +326,7 @@ Run data preprocessing with ``ScriptProcessor`` (sklearn) or ``FrameworkProcesso
 .. rst-class:: new-content
 
 Batch Transform Jobs
-~~~~~~~~~~~~~~~~~~~~~
+---------------------
 
 .. rst-class:: new-content-label
 
@@ -352,7 +352,7 @@ Run batch inference on large datasets using ``Transformer``.
 .. rst-class:: new-content
 
 Hyperparameter Tuning
-~~~~~~~~~~~~~~~~~~~~~~
+----------------------
 
 .. rst-class:: new-content-label
 
@@ -383,7 +383,7 @@ Optimize hyperparameters with ``HyperparameterTuner`` using ``ContinuousParamete
 .. rst-class:: new-content
 
 Model Registry
-~~~~~~~~~~~~~~~
+---------------
 
 .. rst-class:: new-content-label
 
@@ -413,7 +413,7 @@ Register models, create models from registry entries, and manage approval workfl
 .. rst-class:: new-content
 
 Clarify Bias and Explainability
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
 
 .. rst-class:: new-content-label
 
@@ -435,7 +435,7 @@ Run pre-training bias analysis and SHAP explainability using ``SageMakerClarifyP
 .. rst-class:: new-content
 
 EMR Serverless Pipeline Step
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-----------------------------
 
 .. rst-class:: new-content-label
 
@@ -466,7 +466,7 @@ Run PySpark jobs on EMR Serverless within a SageMaker Pipeline.
 .. rst-class:: new-content
 
 MLflow Integration
-~~~~~~~~~~~~~~~~~~~
+-------------------
 
 .. rst-class:: new-content-label
 
@@ -502,7 +502,7 @@ Migration from V2
 .. rst-class:: new-content-label
 
 MLOps Classes and Imports
-~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------
 
 .. list-table::
    :header-rows: 1
@@ -548,7 +548,7 @@ MLOps Classes and Imports
 .. rst-class:: new-content
 
 V3 Package Structure
-~~~~~~~~~~~~~~~~~~~~~
+---------------------
 
 .. rst-class:: new-content-label