Transition to unified complexity documentation across language implementations

Goal: Unified Complexity Documentation

The repository currently lets each language folder document algorithmic complexity in its own style, which makes cross‑language comparison difficult. A single, language‑agnostic schema would let contributors annotate time and space bounds consistently while preserving idiomatic code.

Constraints include a decentralized contribution model, no central versioning, and the need to keep implementations readable for learners.

• What schema can capture complexity annotations in a language‑agnostic way?
• How can automated checks verify parity between different language implementations?
• What governance model would maintain the standard as new languages are added?