Add shui for persistent pak UI

docs/shutdown-architecture.md

@@ -0,0 +1,146 @@
+# Shutdown Architecture
+
+How device shutdown works in LessUI.
+
+## Shutdown Triggers
+
+### 1. keymon (MENU+POWER)
+
+keymon daemon monitors for MENU+POWER combo and calls shutdown directly:
+
+```c
+// workspace/*/keymon/keymon.c
+system("shutdown");
+while (1) pause();
+```
+
+Works regardless of what app is running.
+
+### 2. Power Button Hold (1 second)
+
+Applications call `PWR_update()` each frame, which detects power held for 1 second:
+
+```c
+// workspace/all/common/api.c - PWR_update()
+if (power_pressed_at && now - power_pressed_at >= 1000) {
+    if (before_sleep) before_sleep();
+    PWR_powerOff();
+}
+```
+
+`PWR_powerOff()` shows "Powering off" message and calls `PLAT_powerOff()`:
+
+```c
+void PWR_powerOff(void) {
+    if (pwr.can_poweroff) {
+        // ... show message ...
+        PLAT_powerOff();
+    }
+}
+```
+
+### 3. Auto-shutdown (after 2 min sleep)
+
+If device is sleeping for 2 minutes and not charging:
+
+```c
+// workspace/all/common/api.c - PWR_waitForWake()
+if (pwr.can_poweroff && SDL_GetTicks() - sleep_ticks >= 120000) {
+    if (pwr.is_charging)
+        sleep_ticks += 60000;  // check again in a minute
+    else
+        PWR_powerOff();
+}
+```
+
+### 4. Launcher Script Fallback
+
+MinUI.pak/launch.sh has shutdown at the end as a safety net:
+
+```sh
+while [ -f "$EXEC_PATH" ]; do
+    # ... main loop ...
+done
+
+shutdown  # just in case
+```
+
+## PLAT_powerOff() Implementation
+
+All platforms (except physical switch devices) call `system("shutdown")` directly:
+
+```c
+void PLAT_powerOff(void) {
+    sleep(2);
+    // ... cleanup (mute, backlight off, quit subsystems) ...
+    system("shutdown");
+    while (1) pause();
+}
+```
+
+This ensures shutdown works consistently regardless of which process triggers it
+(minui, minarch, shui daemon, or tool paks).
+
+### Physical Power Switch Platforms
+
+trimuismart and m17 have physical power switches and can't actually power off.
+They enter a low-power mode instead:
+
+```c
+void PLAT_powerOff(void) {
+    // ... cleanup ...
+    touch("/tmp/poweroff");
+    exit(0);
+}
+```
+
+The launcher script checks for this marker and handles low-power mode:
+
+```sh
+if [ -f "/tmp/poweroff" ]; then
+    rm -f "/tmp/poweroff"
+    killall keymon.elf
+    # ... enter low power mode ...
+fi
+```
+
+## Shutdown Scripts
+
+Each platform has a `shutdown` script in `skeleton/SYSTEM/<platform>/bin/`:
+
+| Platform | Method |
+|----------|--------|
+| miyoomini | Plus: `sync && poweroff`; Non-plus: `sync && reboot` |
+| tg5040 | AXP register writes for hardware power-off |
+| rg35xxplus | `reboot -f` |
+| rg35xx | `sync && poweroff` |
+| rgb30 | `poweroff` |
+| zero28 | Clear framebuffer, `poweroff` |
+| my282 | `poweroff` |
+| my355 | `poweroff` |
+| magicmini | `poweroff` |
+| trimuismart | Just saves datetime (physical switch) |
+| m17 | Just saves datetime (physical switch) |
+
+## Who Calls PWR_update()
+
+| Context | Calls PWR_update()? |
+|---------|---------------------|
+| minui main loop | Yes |
+| minarch game loop | Yes |
+| minarch in-game menu | Yes |
+| shui ui_list | Yes |
+| shui ui_message | Yes |
+| shui ui_keyboard | Yes |
+| shui daemon idle loop | No |
+| Tool pak shell scripts | No (they're shell, not C) |
+
+## Summary
+
+| Trigger | Path | Works everywhere? |
+|---------|------|-------------------|
+| MENU+POWER | keymon → system("shutdown") | Yes |
+| Power hold in minui | PWR_powerOff() → PLAT_powerOff() | Yes |
+| Power hold in minarch | PWR_powerOff() → PLAT_powerOff() | Yes |
+| Power hold in shui | PWR_powerOff() → PLAT_powerOff() | Yes |
+| 2 min sleep timeout | PWR_powerOff() → PLAT_powerOff() | Yes |

makefile.dev

@@ -55,6 +55,9 @@ LOG_FLAGS ?= -DENABLE_INFO_LOGS -DENABLE_DEBUG_LOGS
 CFLAGS = -fomit-frame-pointer -DPLATFORM=\"$(PLATFORM)\" -DUSE_SDL2 $(LOG_FLAGS) -Ofast -std=gnu99
 CFLAGS += -DDEV_SCREEN_WIDTH=$(SCREEN_WIDTH) -DDEV_SCREEN_HEIGHT=$(SCREEN_HEIGHT)
 CFLAGS += -fsanitize=address -fno-common
+CFLAGS += -Wall -Wextra -Wsign-compare -Wshadow -Wnull-dereference -Wundef \
+          -Wno-unused-variable -Wno-unused-function -Wno-unused-parameter \
+          -Wno-cast-align -Wno-missing-field-initializers -Wno-format -Werror
 CFLAGS += -Wno-tautological-constant-out-of-range-compare -Wno-asm-operand-widths
 LDFLAGS = -ldl -flto $(SDL_LIBS) -lSDL2 -lSDL2_image -lSDL2_ttf -lpthread -lm -lz -fsanitize=address
 

scripts/analyze-cpu-bands.py

@@ -62,6 +62,22 @@
         1100: 182700,
         1600: 232600,
     },
+    "trimuismart": {
+        60: 8900,
+        240: 38300,
+        312: 50100,
+        408: 65400,
+        480: 77600,
+        600: 97200,
+        720: 116900,
+        816: 131800,
+        912: 147400,
+        1008: 163900,
+        1104: 179600,
+        1200: 195300,
+        1344: 218900,
+        1440: 229800,
+    },
     "my355": {
         408: 67400,
         600: 99300,
@@ -112,9 +128,9 @@
         "PERFORMANCE": 2016,
     },
     "trimuismart": {
-        "POWERSAVE": 1104,
-        "NORMAL": 1344,
-        "PERFORMANCE": 1536,
+        "POWERSAVE": 816,
+        "NORMAL": 1104,
+        "PERFORMANCE": 1440,
     },
     "rg35xx": {
         "POWERSAVE": 1104,