Default name = MAC; brief wake on boot; drop dead touch defences

- Seed viewport_name with the full base MAC, colons stripped
  (e8:f6:0a:e0:90:94 → "e8f60ae09094"). Stable across reboots, globally
  unique, 12 alphanumeric chars — well inside the mDNS hostname limit
  even with the "viewport-" prefix.
- Add a mac_str field to viewport_state and expose it as the new "mac"
  key in GET /state and as a "mac" line on the info screen.
- "Configured" no longer requires a viewport_name (it always has the
  MAC default); the scrypted URL alone gates outbound POSTs and the
  loading-vs-info screen choice.
- Strip viewport_name[0] fallbacks in http_api / mdns / local_screens
  now that the field is never empty.
- Replace the wake-on-boot-stays-on behaviour with a ~600 ms flash
  followed by sleep — long enough for the FT5426 touch IC to come out
  of its initial unresponsive state, short enough that an idle device
  doesn't burn the backlight.
- Drop the touch defensive cruft added when we were chasing a PoE-power
  theory: the DEV_MODE=0x00 write at init, the touch_reset_pulse() call
  at init, and the runtime wedge-self-heal in the polling loop didn't
  actually fix anything — the wake-on-boot flash did. Also delete the
  display_touch_reset_pulse() helper since it now has zero callers.

1 files changed, 0 insertions, 16 deletions

diff --git a/main/display.c b/main/display.c
index 8c5ffb2..a704891 100644
--- a/main/display.c
+++ b/main/display.c
@@ -218,22 +218,6 @@ static esp_err_t touch_release_reset(void)
         PC_LED_EN | PC_RST_TP_N | PC_RST_LCD_N | PC_RST_BRIDGE_N);
 }
 
-// Hard-reset the touch IC: drop PC_RST_TP_N for ~20 ms, then release.
-// touch_init() calls this if its dev_mode read keeps returning 0xff —
-// usually unwedges a stuck FT5426 without needing a power cycle.
-esp_err_t display_touch_reset_pulse(void)
-{
-    if (!s_panel_mcu) return ESP_ERR_INVALID_STATE;
-    // Hold touch in reset (clear PC_RST_TP_N), keep everything else as-is.
-    esp_err_t err = mcu_write_u8(REG_PORTC,
-        PC_LED_EN | PC_RST_LCD_N | PC_RST_BRIDGE_N);
-    if (err != ESP_OK) return err;
-    vTaskDelay(pdMS_TO_TICKS(20));
-    err = touch_release_reset();
-    vTaskDelay(pdMS_TO_TICKS(50));
-    return err;
-}
-
 // ============================================================================
 // TC358762 bridge configuration (DSI Generic Long Write packets)
 // Sequence mirrors Linux drivers/gpu/drm/bridge/tc358762.c tc358762_init().