Rename classifiers/ package to models/

Aligns module naming with the upcoming classification_neural lab,
which will use the same models/ package convention.

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

cli/main.py

@@ -2,12 +2,12 @@
 
 Usage:
     spam -e
-    spam classifiers.manual.ManualClassifier
-    spam classifiers.features.FeatureClassifier
-    spam classifiers.manual.ManualClassifier -t 0.2
-    spam classifiers.manual.ManualClassifier -a
-    spam classifiers.manual.ManualClassifier -a 5
-    spam classifiers.manual.ManualClassifier -f 20
+    spam models.manual.ManualClassifier
+    spam models.features.FeatureClassifier
+    spam models.manual.ManualClassifier -t 0.2
+    spam models.manual.ManualClassifier -a
+    spam models.manual.ManualClassifier -a 5
+    spam models.manual.ManualClassifier -f 20
 """
 
 import argparse
@@ -32,7 +32,7 @@ def main():
     parser.add_argument(
         "classifier",
         nargs="?",
-        help="Fully-qualified class, e.g. classifiers.manual.ManualClassifier",
+        help="Fully-qualified class, e.g. models.manual.ManualClassifier",
     )
     parser.add_argument(
         "-e", "--explore",

models/bow.py

@@ -5,7 +5,7 @@ from sklearn.feature_extraction import DictVectorizer
 from sklearn.linear_model import LogisticRegression
 from sklearn.pipeline import Pipeline
 
-from classifiers.cleaning import LowercaseTransformer, PunctuationRemover
+from models.cleaning import LowercaseTransformer, PunctuationRemover
 
 
 class FeatureExtractor:

pyproject.toml

@@ -16,4 +16,4 @@ requires = ["hatchling"]
 build-backend = "hatchling.build"
 
 [tool.hatch.build.targets.wheel]
-packages = ["cli", "classifiers"]
+packages = ["cli", "models"]