Enhancement suggestion to the current design of 辶 component for TW/HK, and 廴 component for CN/TW/HK

I know, it's me again. This is about revising, or I'd see it as enhancing, the stroke form of the 辶 and 廴 components in the future. The proposal is to update the component design from this:


To something like this:


There are two main reasons for this suggestion:
1. The current design features a decoration that exists in fonts with flared terminals, and Source Han Sans isn't one of them.
2. The proposed design fits more in a modern typeface like Source Han Sans.

I have prepared the issue details in a PDF file, in presentation format:

Revised 2025/10 => [shs-boat-proposal.2025-10.pdf](https://github.com/user-attachments/files/22673468/shs-boat-proposal.2025-10.pdf)
The original one => [proposal.pdf](https://github.com/user-attachments/files/17365125/proposal.pdf)

The PDF explains how the revised design came up by adjustment the current design, why I think this design direction suits better for Source Han Sans, and other information. It also tries to address the concerns some may have. Not sure my argument about the current design (that it has features of flared terminals) is convincing enough; I will try to provide more information when needed.

Here is the [list of affected glyphs](https://github.com/user-attachments/files/17445443/characters-all.md) *(edit: added 1 glyph in 2014/10/19)*

Thank you for considering!