Period logging improvements + Track Against Time feature

[mapgie]

Summary

Bugs fixed

• Period log save on back: BackHandler + "Unsaved changes?" dialog prevents data loss when navigating away from a partially-filled period log screen
• Flow & Symptoms label names: Section headers in the period log screen now read the user-chosen category name from the database (survives renames)
• Multiple logs per day displayed inline: Day view groups all log entries for the same category into a single row with values joined by ·
• Beta banner text: Hyperlinked text shortened from "Feedback / Bug reports / Feature suggestions welcome." to "Feedback encouraged."

New features

1. Stats — time series for numeric categories: "Over Time" chart type is now available for single numeric, dual numeric, and dual mixed-type category combinations
2. Track Against Time — new per-category setting:
   • Toggle in category settings ("Track against time") for all category types
   • On the log screen, a pre-ticked "Track against time" checkbox appears when the category has this enabled; unchecking it omits the timestamp for that entry
   • For Plus One (increment) categories with this enabled: each +1 tap immediately saves a new timestamped log entry; the screen lists all taps for the day with a remove button
   • In the day log sheet: 3-dot menu appears when any category has time-tracked entries → "Display logs against time" toggle → switches display to HH:mm Value stacked per category

Data layer

• DB migration 11→12: adds trackAgainstTime (Boolean) to tracking_categories and loggedAt (String, HH:mm) to tracking_logs

Test plan

• Create/edit a period log, tap back — confirm "Unsaved changes?" dialog appears; Save saves, Discard discards
• Rename the Flow category in Settings → confirm new name appears in the period log screen Flow section header
• Log the same category multiple times in a day (with "Allow multiple" on) → day sheet shows values inline
• Check Beta banner on Stats/History/Settings screens — link text reads "Feedback encouraged."
• Stats: select a numeric category → confirm "Over Time" option appears alongside Average/Distribution
• In category settings, enable "Track against time" → log the category → confirm time is stored and shown in day sheet when "Display logs against time" is toggled
• For a Plus One category with "Track against time" on: log screen shows immediate-save +1 button with a time list

https://claude.ai/code/session_01WgaDZkVLmLkW95574Rdapf

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