fix: unexport internal helpers from ssl-bump and host-iptables

[lpcox]

Summary

Removes unnecessary exports from internal helper functions in security-critical modules.

Changes

1. mountSslTmpfs (src/ssl-bump.ts): Removed export — only called within the same file
2. getDockerBridgeGateway (src/host-iptables.ts): Removed export — only called within the same file
3. _resetIpv6State (src/host-iptables.ts): Moved behind __testing namespace — removes direct export of a mutable state reset function from the public API while preserving test access

Verification

• npm run build ✅
• host-iptables.test.ts — 37 tests pass ✅
• ssl-bump.test.ts — 39 tests pass ✅

Closes #2524
Closes #2531

[github-actions]

✅ Coverage Check Passed

Overall Coverage

Metric	Base	PR	Delta
Lines	86.46%	86.53%	📈 +0.07%
Statements	86.39%	86.46%	📈 +0.07%
Functions	90.61%	90.61%	➡️ +0.00%
Branches	79.23%	79.27%	📈 +0.04%

📁 Per-file Coverage Changes (3 files)

File	Lines (Before → After)	Statements (Before → After)
src/host-iptables.ts	88.8% → 88.7% (-0.04%)	88.5% → 88.5% (-0.04%)
src/ssl-bump.ts	94.8% → 94.8% (-0.04%)	94.1% → 94.1% (-0.05%)
src/container-lifecycle.ts	86.1% → 87.2% (+1.09%)	86.3% → 87.4% (+1.08%)

---

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

[Copilot]

Pull request overview

This PR reduces the exported API surface of security-sensitive modules (ssl-bump and host-iptables) by making module-local helpers non-exported and by moving a test-only state reset helper behind a dedicated testing namespace.

Changes:

• Unexports mountSslTmpfs() in src/ssl-bump.ts (module-internal helper).
• Unexports getDockerBridgeGateway() in src/host-iptables.ts (module-internal helper).
• Replaces direct export of _resetIpv6State() with __testing._resetIpv6State() for test access.

Show a summary per file

File	Description
src/ssl-bump.ts	Removes an unnecessary export of a module-local tmpfs mount helper.
src/host-iptables.ts	Removes an unnecessary export, and introduces a __testing namespace for a test-only reset hook.
src/host-iptables.test.ts	Updates tests to call the reset hook via __testing.

Copilot's findings

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• Files reviewed: 3/3 changed files
• Comments generated: 1

[github-actions]

Smoke Test Results

✅ GitHub MCP: Last 2 merged PRs retrieved

• fix(api-proxy): strip accidental "Bearer " prefix in BYOK Copilot auth token #2521: fix(api-proxy): strip accidental "Bearer " prefix in BYOK Copilot auth token
• api-proxy: listen on all ports unconditionally, return clear errors for missing credentials #2520: api-proxy: listen on all ports unconditionally, return clear errors for missing credentials

✅ Playwright: GitHub homepage loads (title contains "GitHub")

✅ File Writing: Test file created at /tmp/gh-aw/agent/smoke-test-claude-25355820326.txt

Status: PASS

💥 [THE END] — Illustrated by Smoke Claude

[github-actions]

Chroot Version Comparison Results

Runtime	Host Version	Chroot Version	Match?
Python	Python 3.12.13	Python 3.12.3	❌
Node.js	v24.14.1	v20.20.2	❌
Go	go1.22.12	go1.22.12	✅

Result: ❌ Not all versions match — Python and Node.js differ between host and chroot environments.

Tested by Smoke Chroot

[github-actions]

🏗️ Build Test Suite Results

Ecosystem	Project	Build/Install	Tests	Status
Bun	elysia	✅	1/1 passed	✅ PASS
Bun	hono	✅	1/1 passed	✅ PASS
C++	fmt	✅	N/A	✅ PASS
C++	json	✅	N/A	✅ PASS
Deno	oak	N/A	1/1 passed	✅ PASS
Deno	std	N/A	1/1 passed	✅ PASS
.NET	hello-world	✅	N/A	✅ PASS
.NET	json-parse	✅	N/A	✅ PASS
Go	color	✅	passed	✅ PASS
Go	env	✅	passed	✅ PASS
Go	uuid	✅	passed	✅ PASS
Java	gson	✅	1/1 passed	✅ PASS
Java	caffeine	✅	1/1 passed	✅ PASS
Node.js	clsx	✅	passed	✅ PASS
Node.js	execa	✅	passed	✅ PASS
Node.js	p-limit	✅	passed	✅ PASS
Rust	fd	✅	1/1 passed	✅ PASS
Rust	zoxide	✅	1/1 passed	✅ PASS

Overall: 8/8 ecosystems passed — ✅ PASS

Generated by Build Test Suite for issue #2532 · ● 421K · ◷

[github-actions]

fix(api-proxy): strip accidental "Bearer " prefix in BYOK Copilot auth token
api-proxy: listen on all ports unconditionally, return clear errors for missing credentials
GitHub MCP review ❌
safeinputs-gh PR query ❌
Playwright GitHub title ✅
Tavily search ❌
File write/read ✅
Discussion oracle comment ✅
AWF build ✅
Overall: FAIL

Warning

Firewall blocked 1 domain

The following domain was blocked by the firewall during workflow execution:

• registry.npmjs.org

To allow these domains, add them to the network.allowed list in your workflow frontmatter:

network:
  allowed:
    - defaults
    - "registry.npmjs.org"

See Network Configuration for more information.

🔮 The oracle has spoken through Smoke Codex

[github-actions]

Smoke Test Results — Services Connectivity

Check	Result
Redis PING (host.docker.internal:6379)	❌ Connection timeout
PostgreSQL pg_isready (host.docker.internal:5432)	❌ No response
PostgreSQL SELECT 1	❌ Skipped (no connection)

Overall: FAIL

host.docker.internal resolves to 172.17.0.1 but both ports timed out. The GitHub Actions service containers appear unreachable from this runner environment.

🔌 Service connectivity validated by Smoke Services

[github-actions]

🔬 Smoke Test Results

Test	Status
GitHub MCP connectivity	✅
GitHub.com HTTP connectivity	✅ (pre-step)
File write/read	✅ smoke-test-copilot-25376911664.txt

PR: fix: unexport internal helpers from ssl-bump and host-iptables
Author: @lpcox

Overall: PASS ✅

📰 BREAKING: Report filed by Smoke Copilot

[github-actions]

Smoke Test: Copilot BYOK — PR #2532 by @lpcox

Test	Result
GitHub MCP (list PRs)	✅
GitHub.com connectivity	✅
File write/read	✅
BYOK inference (this response)	✅

Running in BYOK offline mode (COPILOT_OFFLINE=true) via api-proxy → api.githubcopilot.com

Overall: PASS

🔑 BYOK report filed by Smoke Copilot BYOK