fix: font metrics for better vertical alignment and change Slanted to Oblique

[caidanw]

Summary

This pull request includes updates to the fonts/ServerMono.glyphs file to adjust font metric values for improved vertical alignment and spacing. As well as switching to the more intentional name Oblique instead of Slanted (was causing some problems with certain tools).

Font metric adjustments:

• hheaAscender, typoAscender, and winAscent values were increased from 750 to 900 to provide more vertical space above the baseline.
• hheaDescender, typoDescender, and winDescent values were adjusted from -250 to -200 to reduce the vertical space below the baseline.

Visuals

Before:

After:

It's a subtle change, but it does make a big impact on legibility and getting it aligned with the rest of the design. This also fixes the visual bug when patching with Nerd Fonts, where the icons and the letters were not aligned correctly.

[Copilot]

Pull Request Overview

This PR updates the ServerMono font metrics to improve vertical alignment and spacing.

• Increased hhea, typo, and win ascender values.
• Reduced hhea and typo descender values and decreased win descent.
• Updated a guide position and refined the glyph list.

Comments suppressed due to low confidence (1)

fonts/ServerMono.glyphs:19

• The '◂' glyph has been removed from the glyph list; confirm if this removal is intentional. If this symbol is still needed for proper rendering, please restore it.

"/.notdef ▂▃▄▅▆▇█▀▔▏▎▍▌▋▊▉▐▕▖▗▘▙▚▛▜▝▞▟░▒▓●○◦◊■□▲▶▼◀▴▾◂╦╗╔═╩╝╚║╬╣╠╥╖╓┰┒┧┎┟╁┯┑┩┍┡╇╤╕╒╍╏╻┳┓┏━╸╾┉┋╺┅┇╹┻┛╿┗┃╋┫┣╅┭┵┽┲┺╊╃╮╭╯╰╌╎╳╲╱╷┬┐┌─╴╼┈┊╶┄┆╵╽┴┘└│┼┤├╆┮┶┾┱┹╉╄╨╜╙╀┸┦┚┞┖╈┷┪┙┢┕╧╛╘╫╢╟╂┨┠┿┥┝╪╡╞",