Release branch not green: release/v3.8.51

The release-green validation found HARD failures on release/v3.8.51. These are real defects that would block the release PR — fix them in the originating PR branch (via co-authorship), not by demanding it from contributors.

Run: https://github.com/diegosouzapw/OmniRoute/actions/runs/35247455167 (mode: push)

Offending push range (b6975537c..83fa4328f):

83fa4328f36e feat(providers): add xKiro (#12648)

──────── verdict ────────
HARD failures (block — real defects): 1
  ❌ Docs sync + fabricated-docs (strict): ✗ In code but missing from .env.example: 1
Ratchet drift (non-blocking — rebaseline at release): 1
   File-size ratchet: ✗ src/sse/handlers/chatHelpers.ts: 1246 > congelado 1245 (não pode crescer)

❌ NOT release-green — hard failures must be fixed (in the originating PR branch, via co-authorship).

Ratchet drift (eslint warnings / cognitive-complexity / file-size) listed above is expected mid-cycle and is rebaselined at release — it is NOT a contributor concern and did not, on its own, open this issue.