Mechanical .max() bounds across 9 router schemas per the convention in
#51: IDs at 64, names at 200, search/filter strings at 500, arrays at
100-5000 depending on domain. Webhook secret bounded at min(16)/max(256).
Reports route now validates startDate/endDate via zod with year bounds
and rejects end<start. SSE timeline route enforces a per-user connection
cap of 8 (returns 429 with Retry-After). tRPC route rejects bodies over
2 MiB via Content-Length check before auth/DB work.
Covers 12 call-sites listed in #51. ESLint rule and zod conventions doc
remain as follow-up.
Hartmut