Merge main (custom features) into release/custom-0.1.95 (upstream v0.1.95).
New upstream features: group subscription binding, multi-dimension quota (daily/weekly/total),
allow_messages_dispatch, default_mapped_model, recover state API.
Our customizations: simulate_claude_max_enabled, usage status detection, 403 validation handling.
When the service restarts, concurrency slots from the old process
remain in Redis, causing phantom occupancy. On startup, scan all
concurrency sorted sets and remove members with non-current process
prefix, then clear orphaned wait queue counters.
Uses Go-side SCAN to discover keys (compatible with Redis client
prefix hooks in tests), then passes them to a Lua script for
atomic member-level cleanup.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The upstream v0.1.90 changed GetAccountConcurrencyBatch from individual
Lua script calls (which swallowed per-account errors) to a Redis pipeline
approach that propagates errors from rdb.Time() or pipe.Exec(). When the
HTTP request context is cancelled (e.g., browser abort), the entire batch
fails and the handler silently shows all concurrency as 0.
Fix: use context.WithTimeout(context.Background(), 3s) for the Redis call
so HTTP request cancellation doesn't affect the read-only concurrency query.
