feat: v2 — queue matchmaking, procedural audio, sprite archetypes, auth

- Add queue-based matchmaking with Elo-proximity and 10s timeout
- Procedural sound engine (SFX, voice announcer, 4-track music)
- Sprite system refactored into 6 archetypes (standard, lobster, sheep, cyborg, blob, tank)
- 42+ fight choreographies with themed/generic/wild card selection
- 4 KO finish styles, super-speed mode, hyperdetail close-ups
- Auth routes, JoinBout page, bot profile with stats
- 7-tier ranking system (Baby through Legend)
- Arena and challenge system expansions

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.claude/memory/MEMORY.md

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+# BOTFIGHTS Project Memory
+
+## Architecture
+- **Frontend**: Vue 3 + Kaplay game engine, Vite, TypeScript
+- **Server**: Node.js + Drizzle ORM, at `/Users/dorian/projects/botfights/server`
+- **Frontend path**: `/Users/dorian/Projects/botfights/frontend`
+
+## Content Counts
+- **100 archetypes** in `sprites/archetypes/` (6 original + 19 individual + 75 in 5 batch files)
+- **300 choreographies** (42 hand-crafted + 258 from 9 factories)
+- **20 music tracks** (4 hand-crafted + 16 via genTrack)
+- **30 voice profiles** (6 original + 24 new)
+- **22 challenge types** in CHALLENGE_THEMED