ci(benchmark): size the hang guard for the slowest runner

The first PR run landed on srvhome, about 1.9 times slower than
nessar-desktop. The fixed 300-second timeout killed its protocol during the
loaded year, although every completed scenario was within its relative
budget. Raise the CI timeout to 600 seconds and the test timeout to 570
seconds so they only guard against hangs, and record the first CI-runner
ratios.

Refs #285

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -86,7 +86,7 @@ jobs:
             - run: bun install --frozen-lockfile
             - run: bun scripts/generate-langs.js
             - name: Benchmark protocol with relative gate
-              run: timeout 300s bunx vitest run src/app/benchmark/ --maxWorkers=1
+              run: timeout 600s bunx vitest run src/app/benchmark/ --maxWorkers=1
 
     build:
         name: build