fix: mobile terminal black screen - grid cell had 0 height

- Root cause: .mobile-terminal-wrapper used height: 100vh inside flex parent
- Fix: Use flex: 1 instead so grid properly allocates 1fr height to content
- Add .shell.mobile-terminal-shell CSS to ensure full viewport coverage
- Remove debug logging

apps/web/src/styles.css

@@ -3112,17 +3112,27 @@ a.nav-item,
    Mobile Terminal Styles
    ============================================ */
 
- .mobile-terminal-wrapper {
+/* Mobile terminal shell - fills viewport */
+.shell.mobile-terminal-shell {
+  height: 100vh;
+  height: 100dvh;
+  overflow: hidden;
+}
+
+.shell.mobile-terminal-shell > * {
+  flex: 1;
+  min-height: 0;
+}
+
+.mobile-terminal-wrapper {
   display: grid;
   grid-template-rows: auto 1fr auto;
   grid-template-areas:
     "header"
     "content"
     "keys";
-  height: 100vh;
-  height: 100dvh; /* Dynamic viewport height for mobile */
-  max-height: 100vh;
-  max-height: 100dvh;
+  flex: 1;
+  min-height: 0;
   background: #1e1e1e;
   position: relative;
   overflow: hidden;