feat(seo): expand PyPI search classifiers, keywords, and document off…

[Vishnu-2345]

…line benchmark comparison

?? Summary of Changes

---

?? Subsystems Affected

• localrag.indexer (Document harvesting, boundary chunking)
• localrag.storage (SQLite schemas, FTS5 BM25, vector BLOBs)
• localrag.retrieval (Dense cosine similarity, Reciprocal Rank Fusion)
• localrag.providers (Ollama, OpenAI, feature hasher embeddings)
• localrag.server / Web UI (FastAPI, SSE streaming, citation drawer)
• localrag.cli (Rich terminal interface, query commands)
• Documentation / Tests

---

?? Type of Change

• ?? Bug Fix (non-breaking fix)
• ? New Feature (new file parser, embedding provider, UI component)
• ? Performance Improvement (SIMD vector operations, batching)
• ??? Security / Privacy Hardening
• ?? Tests Added / Updated
• ?? Documentation Update

---

?? Verification & Air-Gapped Checklist

• Tests Passing: Ran pytest tests/ locally and all tests passed.
• Zero Telemetry: Confirmed that no external tracking or outbound cloud requests are introduced.
• SQL Parameterization: All SQLite and FTS5 queries use parameterized inputs (?).
• Code Formatting: Passes formatting with ruff check . / black --check ..
• Documentation: Updated CLI usage and function docstrings where applicable.

---

?? Demonstration / Terminal Output (if applicable)