fix(terminal): default 80x20 portal feel; frame 79x19

Per operator: "let's actually try 80x20 as the GLOBAL DEFAULTS!!
Make sure MiOS Dashboards/fastfetch/hints can all fit and print in
an 80x20 window!!!".

mios.toml [terminal]:
  rows         = 20  (was 30; 30 = the alternative "console" feel)
  frame_height = 19  (= rows - 1)

mios-config.html: terminal section placeholders updated to 20/19;
legend "(80x20 = MiOS portal default; 80x30 for taller console)".

The dashboard rendering side (Show-MiosDashboard in the MiOS PS
profile body) lands in mios-bootstrap concurrently with a compact
mode that fits 80x20: 1-line title (no multi-line ASCII logo),
paired-column fastfetch capped to available rows, 1-line verb-only
hints band. ~10 rows total, fits cleanly in frame_height 19 with
9 rows of slack.

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

Author: Kabuki94

usr/share/mios/configurator/index.html

@@ -468,17 +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 (80x30 = MiOS default; 80x20 = portal feel)</legend>
+        <legend>terminal (80x20 = MiOS portal default; 80x30 for taller console)</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="30">
+        <input type="text" id="f-term-rows" data-key="terminal.rows" data-type="int" placeholder="20">
         <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">
+        <input type="text" id="f-term-fh" data-key="terminal.frame_height" data-type="int" placeholder="19">
       </fieldset>
       <fieldset>
         <legend>theme</legend>

usr/share/mios/mios.toml

@@ -1296,10 +1296,10 @@ disk_size_gb        = 100
 # ----------------------------------------------------------------------------
 [terminal]
 cols                = 80
-rows                = 30      # 30 = MiOS default; bump to 20 for a tighter portal-feel
+rows                = 20      # 20 = MiOS portal-feel default; 30 for taller "console" feel
 scrollback_rows     = 9000
 frame_width         = 79      # cols - 1 -- dashboard box width
-frame_height        = 29      # rows - 1 -- dashboard box max height
+frame_height        = 19      # rows - 1 -- dashboard box max height
 
 # ----------------------------------------------------------------------------
 # [theme] -- visual styling tokens. The [colors] table above defines