* feat(api-keys): add per-key device/connection tracking
Tracks distinct client devices (SHA-256 fingerprint of IP + User-Agent)
seen with each API key, with a 30-minute TTL and per-key/global caps. The
tracker is in-memory only (module-scoped Map, same pattern as
sessionManager.ts — no global.* singleton) and never stores the raw IP:
it is masked before being written.
Hooked into open-sse/handlers/chatCore.ts (the real chat entry) rather
than the legacy src/sse/handlers path. New GET /api/keys/[id]/devices
management route exposes masked device details for a key, and the
API Keys dashboard tab gets a "Devices" count badge alongside the
existing Sessions badge.
This is a new granularity distinct from the existing maxSessions cap
(src/lib/db/apiKeys.ts), which limits concurrent sticky-routing sessions
rather than tracking device identity.
Co-authored-by: Muhammad Mugni Hadi <mugni@rukita.co>
Inspired-by: https://github.com/decolua/9router/pull/931
* chore(changelog): restore release entries + add api-keys device-tracking bullet
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Co-authored-by: Muhammad Mugni Hadi <mugni@rukita.co>
