fix(case): keep the FPC clearance internal, unbroken bezel

The ribbon accommodation must not be visible from outside. Drop the cut
below the bezel lip so the flex folds back into the cavity with no notch
breaking the external face.

hardware/case/typoena-case.scad

@@ -177,9 +177,10 @@ module screen_cuts() {
             cube([A_ap_w, A_ap_h, 66], center=true);
         // glass pocket behind the lip — centred on the glass outline
         translate([0, 0, -30-lip_t]) cube([P_w, P_h, 60], center=true);
-        // ribbon bay: an open notch in the LEFT short edge (breaches the bezel
-        // lip) so the FPC exits and folds down to the DESPI-C579 breakout below
-        translate([-P_w/2, 0, 0]) cube([14, fpc_w, 70], center=true);
+        // FPC clearance: an internal notch in the LEFT recess wall, kept BELOW
+        // the bezel lip so it stays invisible from outside — the flex passes the
+        // glass's left edge and folds back into the cavity, to the breakout
+        translate([-P_w/2, 0, -30-lip_t]) cube([14, fpc_w, 60], center=true);
     }
 }
 
@@ -297,7 +298,7 @@ if (show == "assembled") {
     translate([W+30, D+30, foot_h])   color(C_bracket) bracket();
 } else if (show == "section") {
     // slice away the +X half: the cut face shows the screen clamp, and the
-    // retained LEFT half shows the open FPC ribbon bay on the left edge
+    // retained LEFT half exposes the internal FPC clearance behind the bezel
     difference() {
         union() {
             color(C_body)   case_body();