Creates the player_meta table (gogobee_legacy_migration.md §2.1) with the
three columns L2 needs: arena_wins, arena_losses, invasion_score. Future
phases ALTER in their own columns. Naming follows the §2.0 callout — no
dnd_ prefix on new tables.
Helpers in internal/plugin/player_meta.go: loadPlayerMeta,
upsertPlayerMetaArena, backfillPlayerMetaArena (INSERT OR IGNORE,
idempotent, logs row count per Phase R1 precedent). Plugin Init runs
the backfill once on startup.
Dual-write per §11: every char.ArenaWins++/ArenaLosses++ in
adventure_arena.go also calls upsertPlayerMetaArena. AdvCharacter
columns stay in place — reads will switch back to AdvCharacter trivially
if a rollback is needed before L5 teardown.
Read swap: handleArenaStats and renderDnDSheet now load player_meta and
prefer its values (falling back to AdvCharacter if the row is missing,
which only matters during the deploy window before backfill runs).
renderArenaPersonalStats's signature changed from (char, stats) to
(displayName, wins, losses, stats) so the render is DB-free.
Tests: TestPlayerMetaArenaBackfill_Idempotent verifies double-run
backfill is a no-op and doesn't clobber post-backfill dual-writes;
TestUpsertPlayerMetaArena_RoundTrip covers insert/update/missing-user
paths.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Implements the identity layer of gogobee_subclass_system.md: 15 subclasses
(3 per class) selectable at L5 via !subclass.
- Schema: new subclass + last_subclass_respec_at columns on dnd_character.
- Registry (dnd_subclass.go): 15 entries with class, display, tagline, and
TwinBee flavor line; helpers for prompt rendering and input resolution
(number, id, or display-name; case/space/hyphen-insensitive).
- !subclass command: bare form prints prompt or current; !subclass <name>
selects (free first time) or changes (500 euros + 30-day cooldown via
separate timestamp from the full !respec wipe). Save-then-debit ordering
mirrors !respec audit fix B.
- Level-up DM at L5+ now embeds the real selection prompt instead of the
Phase 9 placeholder; suppressed once a subclass is set.
- Sheet shows the subclass below the class line, or nudges !subclass when
unchosen at L5+.
- Existing !respec full-wipe also clears subclass + cooldown timestamp.
Mechanical effects of L5/7/10/15 subclass abilities deferred to SUB2/SUB3.
