Adds the account-provisioning plane from docs/PROTOCOL_2.md Part A: the
website can create game accounts and unlink them, gated by a shard-wide
signup mode. The existing [link flow is unchanged.
Overlay:
- BridgeConfig: SignupMode (website|game|hybrid, default hybrid; unrecognized
falls back to game), AccountCreateEnabled (mode-following default),
RequireIpForCreate, name/password caps, and a boot warning when the core
Accounts.AutoCreateAccounts setting contradicts the mode.
- BridgeAccounts (new): account.create (mode gate, actor required, char-safety
mirrored from AccountHandler, collision check, per-IP cap via CanCreate/
LogAccess with fail-closed missing/loopback IP, create + WebsiteUserId link,
account.audit; password never logged or echoed) and account.unlink (Owner
floor via BridgeAdmin.Protected, clears the tag).
- BridgeAccountLink: in-game [unlink command, emits account.unlinked.
- BridgeAdmin: Protected / ResolveTargetAccount promoted to public for reuse.
Sidecar:
- POST /accounts/create, DELETE /link/:account, respond_account status mapping
(409 collision / 429 ip cap / 403 disabled|protected / 404 not-linked / 400).
- store.record_unlink drops the mirrored link row.
- PROTOCOL_VERSION -> 2 (outbound events additive; new endpoints need v2).
Docs: INTEGRATION.md protocol bump, account.* events, endpoints, 409/429;
PROTOCOL_2.md Part A marked built.
Verified: sidecar cargo check clean; overlay compiles in the full ServUO
Scripts tree (0 errors, 0 warnings). Live end-to-end run still pending.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>