Expand PyPI classifiers, keywords, and project URLs for discoverability

Add 14 classifiers (was 8), 18 keywords (was 5), and project URLs
(Documentation, Issues, Changelog) to improve PyPI search ranking
and project page completeness.

Author: remete618

pyproject.toml

@@ -10,16 +10,27 @@ readme = "README.md"
 license = "Apache-2.0"
 requires-python = ">=3.10"
 authors = [{ name = "Radu Cioplea", email = "radu@cioplea.com" }]
-keywords = ["ai", "memory", "llm", "embeddings", "vector-search"]
+keywords = [
+    "ai", "memory", "llm", "embeddings", "vector-search",
+    "agent-memory", "conversational-memory", "rag", "semantic-search",
+    "openai", "anthropic", "ollama", "faiss", "qdrant",
+    "long-term-memory", "mem0", "ai-agents", "chatbot-memory",
+]
 classifiers = [
     "Development Status :: 4 - Beta",
     "Intended Audience :: Developers",
+    "Intended Audience :: Science/Research",
     "License :: OSI Approved :: Apache Software License",
+    "Operating System :: OS Independent",
     "Programming Language :: Python :: 3",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: Scientific/Engineering :: Artificial Intelligence",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Text Processing :: Linguistic",
+    "Typing :: Typed",
 ]
 dependencies = [
     "pydantic>=2.0",
@@ -52,6 +63,9 @@ packages = ["widemem"]
 [project.urls]
 Homepage = "https://widemem.ai"
 Repository = "https://github.com/remete618/widemem-ai"
+Documentation = "https://github.com/remete618/widemem-ai#readme"
+Issues = "https://github.com/remete618/widemem-ai/issues"
+Changelog = "https://github.com/remete618/widemem-ai/releases"
 
 [tool.ruff]
 target-version = "py310"