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Torlando
ce92e8073e
Opening a conversation crashed the same way sending did. load_conversation()
(LVGL task, under the LVGL lock held by replace_route) ran the full open
pipeline synchronously: identity recall (ustore), display-name read, the
message-index read, and the per-message metadata reads. On this device's
degraded LittleFS each op is 0.4-2s, so a cold open of a dozen-message
conversation held the LVGL mutex past the 5s deadlock guard and asserted at
LVGLLock.h:45. The send path already got the mailbox fix; the open path never
did.
Restructure with the same pattern:
- load_conversation() (LVGL task) now only navigates + resets the list and
shows the truncated hash in the header. Same-peer re-opens return early
with zero store I/O (rows are still built).
- prepare_conversation() (main loop, called from update()) does the store
I/O between a short guard lock and a short commit lock, then commits the
header name + initial bubbles + background-fill arming under a brief
LVGL_LOCK. A generation counter discards a stale in-flight prepare when
the conversation changes mid-I/O.
- refresh() re-arms the prepare instead of re-reading under the lock.
The 1Hz store 'not found in index' fetch is pre-existing (present on
2527c6d) and is being tracked separately as a flash-wear follow-up.
Build tdeck SUCCESS, 170/170 contract tests pass.