banner: give the bit actual teeth

Previous staircase pattern was just trailing decoration — not real
key teeth. Redesigned the bit as a hanging rectangle with two
clearly-projecting notch-teeth on its right edge (the part that
engages a lock's wards). Switched to box-drawing chars for the bit
since they make sharper notches than 8/b/d glyphs; bow stays
ornate-ASCII style.

Bump 0.4.3 → 0.4.4.

README.md

@@ -10,20 +10,19 @@
        ,d8888b,
       d88'  `88b
      d88' ,db, `88b
-     88  d8''8b  88===========================================,
+     888  d8''8b  888===========================================╗
-     88  88  88  88                                            `=,
+     888  88  88  888                                           ║
-     88  `8bd8'  88                                              "Yb,
+     888  `8bd8'  888                                        ╔══╩═╗
-     `8b  `""'  d8'                                                Yb
+     `88b  `""'  d88'                                        ║    ╠═╗
-      Y8,      ,8P                                              ,d8'
+      `Y8,      ,8P'                                         ║    ║ ║
-       `Y8888P''                                              ,d8P'
+        `"Y8P"'                                              ║    ╠═╝
-                                                            d8P"
+                                                             ║    ║
+                                                             ║    ╠═╗
+                                                             ║    ║ ║
+                                                             ║    ╠═╝
+                                                             ╚════╝
 
- ███████╗██╗  ██╗███████╗██╗     ███████╗████████╗ ██████╗ ███╗   ██╗██╗  ██╗███████╗██╗   ██╗
+                       S K E L E T O N K E Y
- ██╔════╝██║ ██╔╝██╔════╝██║     ██╔════╝╚══██╔══╝██╔═══██╗████╗  ██║██║ ██╔╝██╔════╝╚██╗ ██╔╝
- ███████╗█████╔╝ █████╗  ██║     █████╗     ██║   ██║   ██║██╔██╗ ██║█████╔╝ █████╗   ╚████╔╝ 
- ╚════██║██╔═██╗ ██╔══╝  ██║     ██╔══╝     ██║   ██║   ██║██║╚██╗██║██╔═██╗ ██╔══╝    ╚██╔╝  
- ███████║██║  ██╗███████╗███████╗███████╗   ██║   ╚██████╔╝██║ ╚████║██║  ██╗███████╗   ██║   
- ╚══════╝╚═╝  ╚═╝╚══════╝╚══════╝╚══════╝   ╚═╝    ╚═════╝ ╚═╝  ╚═══╝╚═╝  ╚═╝╚══════╝   ╚═╝   
 ```
 
 > ⚠️ **Authorized testing only.** SKELETONKEY is a research and red-team

skeletonkey.c

@@ -28,29 +28,28 @@
 #include <string.h>
 #include <unistd.h>
 
-#define SKELETONKEY_VERSION "0.4.2"
+#define SKELETONKEY_VERSION "0.4.4"
 
 static const char BANNER[] =
 "\n"
 "       ,d8888b,\n"
 "      d88'  `88b\n"
 "     d88' ,db, `88b\n"
-"     88  d8''8b  88===========================================,\n"
+"     888  d8''8b  888===========================================╗\n"
-"     88  88  88  88                                            `=,\n"
+"     888  88  88  888                                           ║\n"
-"     88  `8bd8'  88                                              \"Yb,\n"
+"     888  `8bd8'  888                                        ╔══╩═╗\n"
-"     `8b  `\"\"'  d8'                                                Yb\n"
+"     `88b  `\"\"'  d88'                                        ║    ╠═╗\n"
-"      Y8,      ,8P                                              ,d8'\n"
+"      `Y8,      ,8P'                                         ║    ║ ║\n"
-"       `Y8888P''                                              ,d8P'\n"
+"        `\"Y8P\"'                                              ║    ╠═╝\n"
-"                                                            d8P\"\n"
+"                                                             ║    ║\n"
+"                                                             ║    ╠═╗\n"
+"                                                             ║    ║ ║\n"
+"                                                             ║    ╠═╝\n"
+"                                                             ╚════╝\n"
 "\n"
-" ███████╗██╗  ██╗███████╗██╗     ███████╗████████╗ ██████╗ ███╗   ██╗██╗  ██╗███████╗██╗   ██╗\n"
+"                       S K E L E T O N K E Y\n"
-" ██╔════╝██║ ██╔╝██╔════╝██║     ██╔════╝╚══██╔══╝██╔═══██╗████╗  ██║██║ ██╔╝██╔════╝╚██╗ ██╔╝\n"
+"           Curated Linux kernel LPE corpus — v" SKELETONKEY_VERSION "\n"
-" ███████╗█████╔╝ █████╗  ██║     █████╗     ██║   ██║   ██║██╔██╗ ██║█████╔╝ █████╗   ╚████╔╝ \n"
+"                AUTHORIZED TESTING ONLY — see docs/ETHICS.md\n";
-" ╚════██║██╔═██╗ ██╔══╝  ██║     ██╔══╝     ██║   ██║   ██║██║╚██╗██║██╔═██╗ ██╔══╝    ╚██╔╝  \n"
-" ███████║██║  ██╗███████╗███████╗███████╗   ██║   ╚██████╔╝██║ ╚████║██║  ██╗███████╗   ██║   \n"
-" ╚══════╝╚═╝  ╚═╝╚══════╝╚══════╝╚══════╝   ╚═╝    ╚═════╝ ╚═╝  ╚═══╝╚═╝  ╚═╝╚══════╝   ╚═╝   \n"
-"   Curated Linux kernel LPE corpus — v" SKELETONKEY_VERSION "\n"
-"   AUTHORIZED TESTING ONLY — see docs/ETHICS.md\n";
 
 static void usage(const char *prog)
 {