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feat: add silent NTP time sync on boot via saved WiFi credentials

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New "Auto Sync on Boot" toggle in Clock Settings. When enabled, a
background FreeRTOS task scans for saved WiFi networks at boot,
connects, syncs time via NTP, then tears down WiFi — all without
blocking boot or requiring user interaction. If no saved network is
found after two scan attempts (with a 3-second retry gap), it bails
silently.

Conflict guards (BootNtpSync::cancel()) added to all WiFi-using
activities so the background task cleans up before any user-initiated
WiFi flow. Also fixes clock not appearing in the header until a button
press by detecting the invalid→valid time transition after NTP sync.

Made-with: Cursor
This commit is contained in:
cottongin
2026-02-26 18:21:13 -05:00
parent 2eae521b6a
commit 19b6ad047b
22 changed files with 227 additions and 2 deletions
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lib/I18n/translations/romanian.yaml
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@@ -318,3 +318,4 @@ STR_EMBEDDED_STYLE: "Stil încorporat"
STR_OPDS_SERVER_URL: "URL server OPDS"
STR_SYNC_CLOCK: "Sync Clock"
STR_TIME_SYNCED: "Time synced!"
STR_AUTO_NTP_SYNC: "Auto Sync on Boot"