I plan to create a swaying procedural L-system fractal tree with p5.js, using the pre-provided library.The full production plan has already been worked out, and checking the current directory is the first step to be taken.

Dependency check passed, I'll create an HTML file with a wind-swaying L-system fractal tree.Core implementation points for the fractal tree project have been confirmed, and the corresponding code will be written next.

I will double-check my L-system depth tracking logic.It has been found that the previous L-system depth tracking logic is completely wrong, as confirmed by the sample tree structure I verified.It has been found that the previous recursion depth calculation logic was wrong. The correct approach is to track depth based on the number of unclosed branch push states, and I am re-evaluating the relevant rules.

After reviewing the code and existing L-system tree visualization logic, I've confirmed the root cause of the depth calculation error: the current implementation increments the depth counter for every "F" command, which incorrectly assigns different depths to forward drawing steps at the same branching level, leading to inconsistent segment thickness for same-generation branches. I've clarified the correct depth tracking rule: depth should represent the current branching level, starting at 0, only increasing when entering a new branch (after a "[") and decreasing when exiting a branch (after a "]"). I will adjust the segment length calculation logic next, setting a uniform base length for each "F" command and only shrinking length per generation to ensure same-level branches have consistent thickness.

I've confirmed the optimal solution: use stack depth (number of open brackets minus close brackets) as the branch level for both segment thickness and color, and I will rewrite the drawLSystem function accordingly.