[P3][Simplicity] Aggressive Simplification of Knowledge Base and Agents

[Dan-StrategicAutomation]

Reflects findings from `005-pending-p3-code-simplicity-reviewer-finding.md`.

Problem Statement

The codebase is well-structured but overly complex for its domain, with signs of over-engineering and YAGNI violations.

Key Tasks

• Refactoring: Split the `KnowledgeBase` class into focused components (Storage, Indexer, Retriever).
• Consolidation: Reduce CLI command proliferation and simplify the 6-level configuration priority system.
• YAGNI: Remove redundant specialized agents and simplify verbose DSPy signatures.

Findings Details

• Location: `utils/knowledge/core.py`, `agents/review/`, `cli.py`, `config.py`
• Severity: P3