Snake: the snake was initialized with its head at the left end while
moving right, so the first gravity step walked the head into its own
body and the game started at Game Over. Initialize the head at the
right end (cx) so the initial direction is valid.
Tetris: enlarge the playfield cell (10 -> 12px) so pieces are not too
small, and slow gravity (800ms base, gentler per-level ramp, 250ms
floor) so pieces do not fall too fast.
Both: brighten the secondary/dim text colour (0x0a3a0a -> 0x2f9f2f)
so score/label/menu text is actually legible on the black background.
Also wire the Games section into the real main menu: the system menu
is hardcoded in the dwm-plugin dmenu (src/sxmo-dmenu/dmenu.c), not in
sxmo_appmenu.sh, so add a 'games' builtin menu that loads
sxmo_hook_games.sh and a Games entry after Apps in the sys menu, plus
scripts/build-dmenu.sh to cross-compile dmenu.so.
Text-input dialogs (Wi-Fi SSID/Passphrase, search queries, config
prompts, etc.) invoke dmenu with -p but never -t, so the XIM/fcitx
routing that was gated solely by use_text_input was never enabled and
fcitx never activated on dmenu input; on the numeric keypad only raw
digits could be entered, making the dialogs non-functional.
Decouple the fcitx/IME routing from the -t flag via a new engage_ime
flag (default on) while keeping use_text_input for its output/selection
semantics, and skip routing Enter to fcitx when a menu list is present
so menu selection is never stolen by the T9 commit. XFilterEvent already
returns False when fcitx is toggled off via the mode switcher, so the
dialogs now respect the Fcitx mode switcher automatically.
Luxferre