fix: rewrite squid_https_latency to use background containers

[Copilot]

squid_https_latency benchmark always reports 0ms because AWF streams container stdout via docker logs -f with stdio: 'inherit' — execSync() captures empty string, parseFloat("") → NaN, all iterations skip, fallback values.push(0).

Rewritten to use the same background-container pattern as benchmarkMemory():

• Spawn AWF with sleep 30 in background, wait for awf-squid to be healthy
• Run curl -x http://172.30.0.10:3128 directly from host through Squid's proxy port
• Proper finally cleanup (kill background process + docker teardown)
• Function is now async, main() updated to await it

This also gives a cleaner measurement — isolates Squid proxy latency without container startup overhead.

[github-actions]

✅ Coverage Check Passed

Overall Coverage

Metric	Base	PR	Delta
Lines	86.24%	86.34%	📈 +0.10%
Statements	86.10%	86.19%	📈 +0.09%
Functions	87.50%	87.50%	➡️ +0.00%
Branches	78.80%	78.86%	📈 +0.06%

📁 Per-file Coverage Changes (1 files)

File	Lines (Before → After)	Statements (Before → After)
src/docker-manager.ts	86.6% → 87.0% (+0.35%)	86.1% → 86.5% (+0.35%)

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Coverage comparison generated by scripts/ci/compare-coverage.ts

[github-actions]

Smoke Test Results

• ✅ GitHub MCP: Redesign cli-proxy: connect to external DIFC proxy started by compiler #1809 "Redesign cli-proxy: connect to external DIFC proxy started by compiler", fix: include Gemini in api-proxy validation, add 503 fallback #1808 "fix: include Gemini in api-proxy validation, add 503 fallback"
• ✅ Playwright: github.com title contains "GitHub"
• ✅ File Write: /tmp/gh-aw/agent/smoke-test-claude-24160740661.txt created
• ✅ Bash: File verified via cat

Overall: PASS

💥 [THE END] — Illustrated by Smoke Claude

[github-actions]

🔥 Smoke Test Results

Test	Result
GitHub MCP (list PRs)	✅
GitHub.com connectivity (HTTP 200)	✅
File write/read	✅

PR: fix: rewrite squid_https_latency to use background containers
Author: @Copilot | Assignees: @Mossaka, @Copilot

Overall: PASS ✅

📰 BREAKING: Report filed by Smoke Copilot

[github-actions]

Smoke Test: GitHub Actions Services Connectivity ✅

Check	Result
Redis PING (port 6379)	✅ PONG
PostgreSQL pg_isready (port 5432)	✅ accepting connections
PostgreSQL SELECT 1 (db: smoketest, user: postgres)	✅ returned 1

All checks passed. (redis-cli unavailable; Redis verified via nc raw RESP protocol.)

🔌 Service connectivity validated by Smoke Services

[github-actions]

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The run’s omen is recorded above for the keepers of this PR.

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