chore: polish oss metadata and cosmetic typing/docs

.gitignore

@@ -38,3 +38,4 @@ htmlcov/
 output-smoke/
 litresearch.toml
 .opencode/LESSONS.md
+.opencode/PROJECT_STATE.md

pyproject.toml

@@ -8,6 +8,17 @@ authors = [
     { name = "Silas Pignotti", email = "pignottisilas@gmail.com" },
 ]
 license = { text = "MIT" }
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Environment :: Console",
+    "Intended Audience :: Science/Research",
+    "License :: OSI Approved :: MIT License",
+    "Programming Language :: Python",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering :: Information Analysis",
+    "Typing :: Typed",
+]
 dependencies = [
     "httpx>=0.28.1",
     "litellm==1.82.6",
@@ -24,6 +35,9 @@ dependencies = [
 [project.urls]
 Homepage = "https://github.com/spignotti/litresearch"
 Repository = "https://github.com/spignotti/litresearch"
+Documentation = "https://github.com/spignotti/litresearch#readme"
+Changelog = "https://github.com/spignotti/litresearch/blob/main/CHANGELOG.md"
+Issues = "https://github.com/spignotti/litresearch/issues"
 
 [project.scripts]
 litresearch = "litresearch.cli:main"

src/litresearch/config.py

@@ -3,7 +3,12 @@
 from typing import Literal
 
 from pydantic import computed_field
-from pydantic_settings import BaseSettings, SettingsConfigDict, TomlConfigSettingsSource
+from pydantic_settings import (
+    BaseSettings,
+    PydanticBaseSettingsSource,
+    SettingsConfigDict,
+    TomlConfigSettingsSource,
+)
 
 
 class Settings(BaseSettings):
@@ -19,11 +24,11 @@ class Settings(BaseSettings):
     def settings_customise_sources(
         cls,
         settings_cls: type[BaseSettings],
-        init_settings,
-        env_settings,
-        dotenv_settings,
-        file_secret_settings,
-    ):
+        init_settings: PydanticBaseSettingsSource,
+        env_settings: PydanticBaseSettingsSource,
+        dotenv_settings: PydanticBaseSettingsSource,
+        file_secret_settings: PydanticBaseSettingsSource,
+    ) -> tuple[PydanticBaseSettingsSource, ...]:
         """Load settings from init, env, dotenv, TOML, then secrets."""
         return (
             init_settings,

src/litresearch/stages/__init__.py

@@ -0,0 +1 @@
+"""Pipeline stage modules for litresearch."""