ns-optimize-function

From README

Acquire the Target Function The user selects a function via code-lens, names it, or pastes its code. Read it from the workspace. If they name it but don't point at a location, search the workspace for the definition and confirm the match before proceeding. Do not guess which definition they meant when multiple exist — ask. Record the exact file path, start/end lines, and the function signature. Analyze Context & Impact This is the grounding step. Do not write any optimization yet. Read the function body and everything it references (helpers, constants, external imports, closures). Search the workspace for call sites and tests to understand real and the actual input shapes callers pass in. Assess and state explicitly: What it does and its current complexity — the algorithmic shape (loops, nested iterations, recursion, allocations, serialization, I/O).