fix: show elapsed in seconds when <60s in edit-running window

When a fast was just started, DOWN appeared to do nothing because
format_duration_hours_minutes rounds to minutes — both 8s and 0s
display as "0h 00m". Now the edit window shows the exact seconds
(e.g. "Elapsed 8s") for sub-minute elapsed times, giving clear
feedback when UP/DOWN adjustments change the value.

Also adds 'just reset-flash' recipe to recover from SPI flash
corruption that causes the emulator to hang on the boot screen.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2 files changed, 19 insertions, 1 deletions

diff --git a/Justfile b/Justfile
index 9c5ee3b..d24e97c 100644
--- a/Justfile
+++ b/Justfile
@@ -53,6 +53,18 @@ kill:
     pebble kill
 
 # ─────────────────────────────────────────────
+# Emulator recovery
+# ─────────────────────────────────────────────
+
+# Reset the basalt SPI flash to factory state.
+# Use this when 'just dev' hangs on the Pebble boot screen — it means the
+# flash was corrupted (e.g. by killing multiple concurrent qemu processes).
+reset-flash:
+    -pebble kill
+    bunzip2 -k -c ~/.pebble-sdk/SDKs/4.9.148/sdk-core/pebble/basalt/qemu/qemu_spi_flash.bin.bz2 > ~/.pebble-sdk/4.9.148/basalt/qemu_spi_flash.bin
+    @echo "Flash reset to factory state. Run 'just dev' to reinstall."
+
+# ─────────────────────────────────────────────
 # Maintenance commands
 # ─────────────────────────────────────────────
 
diff --git a/src/c/fastforge.c b/src/c/fastforge.c
index f128592..dd2a976 100644
--- a/src/c/fastforge.c
+++ b/src/c/fastforge.c
@@ -1037,7 +1037,13 @@ static void refresh_running_edit_window_content(void) {
     elapsed = 0;
   }
   char elapsed_text[20];
-  format_duration_hours_minutes(elapsed, elapsed_text, sizeof(elapsed_text));
+  if (elapsed < 60) {
+    /* Show seconds when elapsed is sub-minute so the user can see DOWN/UP
+     * adjustments that would otherwise be invisible at "0h 00m" resolution. */
+    snprintf(elapsed_text, sizeof(elapsed_text), "%ds", (int)elapsed);
+  } else {
+    format_duration_hours_minutes(elapsed, elapsed_text, sizeof(elapsed_text));
+  }
 
   snprintf(s_running_edit_start_text, sizeof(s_running_edit_start_text), "Start %s", start_text);
   snprintf(s_running_edit_elapsed_text, sizeof(s_running_edit_elapsed_text), "Elapsed %s", elapsed_text);