fix(terminal): default 80x30 with frame at cols-1/rows-1

Per operator: "make sure the GLOBAL MiOS tty0/console and local MiOS
terminal windows are all 80x30!!!! with GLOBAL framing -1 width and
height for fitting piping/framin withing the borderless and
scrollbar-less MiOS themed terminal window".

Reverts the [terminal].rows from 40 to 30 (the canonical TTY0 /
IBM text-mode-3+ size, also the existing
feedback_mios_terminal_dimensions memory's target -- the 40 in the
prior commit was a regression).

Adds [terminal].frame_width / frame_height = cols-1 / rows-1. The
PS profile body's Show-MiosDashboard reads frame_width into its
\$WIDTH so the box-drawing fits inside borderless + scrollbar-less
WT focus-mode windows without colliding with the line-wrap boundary
on pseudo-consoles that lie about their width.

mios-config.html: terminal section default placeholders bumped to
30/79/29; new frame_width / frame_height inputs with int coercion.

Operator-considered alternative: 80x20 for a tighter "application/
portal" feel. Switching is a 4-key edit in the configurator (cols,
rows, frame_width, frame_height) -- the MiOS terminal everywhere
re-skins on next launch.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: Kabuki94

usr/share/mios/configurator/index.html

@@ -468,13 +468,17 @@ <h1>MiOS configurator <span class="v" id="v-meta">schema 1.2.0 / mios 0.2.4</spa
     </p>
     <div class="grid">
       <fieldset>
-        <legend>terminal</legend>
+        <legend>terminal (80x30 = MiOS default; 80x20 = portal feel)</legend>
         <label for="f-term-cols">cols</label>
         <input type="text" id="f-term-cols" data-key="terminal.cols" data-type="int" placeholder="80">
         <label for="f-term-rows">rows</label>
-        <input type="text" id="f-term-rows" data-key="terminal.rows" data-type="int" placeholder="40">
+        <input type="text" id="f-term-rows" data-key="terminal.rows" data-type="int" placeholder="30">
         <label for="f-term-scroll">scrollback_rows</label>
         <input type="text" id="f-term-scroll" data-key="terminal.scrollback_rows" data-type="int" placeholder="9000">
+        <label for="f-term-fw">frame_width (cols - 1, borderless fit)</label>
+        <input type="text" id="f-term-fw" data-key="terminal.frame_width" data-type="int" placeholder="79">
+        <label for="f-term-fh">frame_height (rows - 1)</label>
+        <input type="text" id="f-term-fh" data-key="terminal.frame_height" data-type="int" placeholder="29">
       </fieldset>
       <fieldset>
         <legend>theme</legend>

usr/share/mios/mios.toml

@@ -1287,14 +1287,19 @@ disk_size_gb        = 100
 # ----------------------------------------------------------------------------
 # [terminal] -- canonical MiOS terminal dimensions. EVERY spawned shell
 # (wt.exe new-tab, conhost fallback, wsl.exe into MiOS-DEV, the
-# auto-elevated bootstrap window, the native-app launcher) opens at
-# exactly cols × rows so the dashboard's 80-col frame renders cleanly.
+# auto-elevated bootstrap window, the native-app launcher, Linux tty0
+# console via /etc/profile.d/mios-tty.sh) opens at exactly cols × rows.
+# Frame dims are cols-1 / rows-1 so the dashboard's box-drawing fits
+# inside the borderless + scrollbar-less MiOS terminal without the
+# right border colliding with the line-wrap boundary.
 # Per memory feedback_mios_terminal_dimensions.
 # ----------------------------------------------------------------------------
 [terminal]
 cols                = 80
-rows                = 40
+rows                = 30      # 30 = MiOS default; bump to 20 for a tighter portal-feel
 scrollback_rows     = 9000
+frame_width         = 79      # cols - 1 -- dashboard box width
+frame_height        = 29      # rows - 1 -- dashboard box max height
 
 # ----------------------------------------------------------------------------
 # [theme] -- visual styling tokens. The [colors] table above defines