Add 34 tests covering all previously-untested GuildRepository methods:
invitations/scouts, guild posts, alliances, adventures, treasure
hunts, meals, kill tracking, and edge cases like disband with
alliance cleanup.
Fix test schema setup to apply the 9.2 update schema after init.sql,
which bridges v9.1.0 to v9.2.0 and resolves 9 pre-existing test
failures caused by missing columns (rp_today, created_at, etc.).
Make patch schemas 14 and 19 idempotent so they no longer fail when
applied against a schema that already has the target state (e.g.
festival_color type already renamed, legacy column names).
UserBinary type1-5 and EnhancedMinidata are transient session state
resent by the client on every login. Persisting them to the DB on
every set was unnecessary I/O. Both are now served exclusively from
server-scoped in-memory maps (userBinaryParts, minidataParts).
Includes a schema migration to drop the now-unused type2/type3
columns from user_binary and minidata column from characters.
Ref #158
Use a `deleted` boolean column (matching characters and mail tables)
instead of permanently removing guild_posts rows. This makes excess
post purging and manual deletion reversible.
