T

JonKazama-Hellion 68c7185cea Add per-channel message retention with daily background sweep

Privacy filter trimmed history "by what" — this adds the time axis.
Each ChatType gets its own retention window in days; channels
without an explicit override fall back to a configurable global
default. The master switch defaults to OFF: the plugin never
deletes history without explicit user consent.

MessageStore.DeleteByRetentionPolicy builds an OR'd WHERE clause
over (ChatType = X AND Date < cutoff_X) plus a NOT IN catch-all
for the global default, hard-deletes matches, and only runs VACUUM
when something was actually removed.

Plugin.RunRetentionSweepIfDue runs at most once per 24 hours on a
background thread (off the load path) and persists the timestamp
so subsequent restarts skip the sweep until enough time has
passed. The Privacy tab gains a retention section with the master
switch, default-days input, per-channel override tree, reset
buttons, and a Ctrl+Shift "apply now" action that mirrors the
auto-sweep but on demand.

Spec defaults: Tells 365 days, own-conversation channels (Party,
Cross-Party, Alliance, PvP Team, FC, Linkshells 1-8, Cross-World
Linkshells 1-8, ExtraChat 1-8) 90 days, fallback 30 days.

2026-05-01 18:47:31 +02:00