* fix(compression): reconcile outer vs per-engine token counts on degenerate output (#6488)
Outer originalTokens/compressedTokens (real tiktoken counter over extracted
message text) diverged from engineBreakdown[0]'s counts (a crude
JSON.stringify(requestBody).length/4 estimate), worst on small/degenerate
inputs where JSON structural overhead dominates. A single-engine breakdown
entry represents the exact same before/after transformation as the overall
response, so reconcileSingleEngineTokens() now overwrites that one entry's
counts with the outer, more accurate figures; multi-step pipeline
breakdowns are left untouched.
* chore(6741): resolve release sync — CHANGELOG.md restored to release tip, entry moved to changelog.d fragment (fragments-first)
OmniRoute v3.8.29 — 115 commits since v3.8.28. Full CHANGELOG + 41 i18n mirrors. All content quality gates green (build, unit 8/8, vitest 188/188, PR test policy, quality gates extended, docs sync, quality ratchet). Remaining red CI checks are pre-existing release flakes (coverage-shard/integration/node-compat teardown), a new transitive undici advisory in electron devDeps, and a workflow-level CodeQL fail (0 open alerts). VPS-validated by the operator.
