Refactoring curious pathfinding problem — Advent of Code 2023 day 17

This is *not* my solution for the 17th day puzzle of Advent of Code 2023. There's no video about that because i accidentally stopped the recording while solving that puzzle :/ This is an after-solve refactoring session. Links: Advent of Code 2023: https://adventofcode.com/2023 Source code repository: https://github.com/epidemian/advent-of-code-2023 Chapters: 0:00 Refactor plan and solution review 21:18 Implement part 1 & 2 with same function 31:38 Lil parse tweak 33:17 Adding debug print path visualization 54:45 Removing Dir enum 1:17:10 Trying out A* instead of Dijkstra 1:27:03 Parallelizing part 1 & 2 1:33:08 Trying out bespoke Dijkstra algo instead of external crate 1:41:05 Wrap-up