fix(ci): clear base-reds on release/v3.8.50 (round 4)

Drains the HARD failures reported by Release-Green run 31693210948 on issue #9985
(ESLint errors: 2) plus the merge-integrity red every open PR is inheriting.

- ESLint error 1: @omniroute/opencode-plugin/src/index.ts had a stray extra
  '});' (introduced by #9316) that broke parsing with 'unexpected file in NFT list'
  on the build path.
- ESLint error 2: cli-env-inline-comment-10100.test.ts used new Function to extract
  parseEnvValue from the bin entrypoint (no-new-func, Hard Rule #3). Extracted the
  helper to bin/cli/utils/parseEnvValue.mjs and import it from both the entrypoint
  and the test (same behavior, no eval).
- open-sse-typecheck (Fast Quality Gates): open-sse/utils/stream.ts imported
  sseCommentsEnabled twice (#9378) causing TS2300 Duplicate identifier; removed the
  duplicate import.
- Merge integrity (changelog + generated skills): skills/omni-settings/SKILL.md was
  edited manually by #10169 without updating the generator source, so
  check:agent-skills-sync failed on every PR (Generated: 1). Moved the curated
  thinking-budget content into a <!-- skill:custom-start --> block (the documented
  preservation mechanism), which the generator now keeps in sync.

Refs #9985

@omniroute/opencode-plugin/src/index.ts

@@ -5478,7 +5478,6 @@ export function createOmniRouteConfigHook(
           rawConnections: localRawConnections,
           expiresAt: now() + resolved.modelCacheTtl,
         });
-        });
 
         // Startup diagnostics (file-based) — fires at startup via config hook
         if (resolved.features?.startupDebug === true) {