fix: Copilot Business 'token' prefix not overridable by AWF_PLATFORM_TYPE

[Copilot]

On *.ghe.com (GHEC) runners, gh-aw automatically injects AWF_PLATFORM_TYPE=ghec into the api-proxy environment. The previous ordering in copilotTargetRequiresGitHubTokenPrefix() checked this guard first, short-circuiting to false before ever reaching the GITHUB_TOKEN_PREFIX_COPILOT_TARGETS catalog check — causing Copilot Business customers with COPILOT_API_TARGET=api.business.githubcopilot.com to receive Bearer instead of the required token prefix, yielding 400 bad request: Authorization header is badly formatted.

Changes

• containers/api-proxy/providers/copilot-auth.js — Reorder copilotTargetRequiresGitHubTokenPrefix() so catalog endpoints (api.enterprise.githubcopilot.com, api.business.githubcopilot.com) are checked first. These endpoints always require token prefix for GitHub OAuth credentials and must not be overridable by AWF_PLATFORM_TYPE. The platform-type guard is retained but now only affects the GHES heuristic for custom/unknown proxy targets.

  // Before (buggy): AWF_PLATFORM_TYPE guard fires first
  if (env.AWF_PLATFORM_TYPE && env.AWF_PLATFORM_TYPE !== 'ghes') return false; // ← short-circuits
  if (isGhesInstance(...)) return true;
  return GITHUB_TOKEN_PREFIX_COPILOT_TARGETS.has(target);                       // ← never reached
  
  // After: catalog endpoints checked first, immune to platform override
  if (GITHUB_TOKEN_PREFIX_COPILOT_TARGETS.has(target)) return true;             // ← wins always
  if (env.AWF_PLATFORM_TYPE && env.AWF_PLATFORM_TYPE !== 'ghes') return false; // ← only for heuristic
  if (isGhesInstance(...)) return true;

• containers/api-proxy/copilot-auth.test.js — Correct the previously wrong test that expected false for api.business.githubcopilot.com + AWF_PLATFORM_TYPE=ghec; add regression tests for the full production scenario (Business + GHEC + AWF_PLATFORM_TYPE=ghec).

• containers/api-proxy/copilot-adapter-enterprise.test.js — Fix adapter test that expected Bearer when AWF_PLATFORM_TYPE=github.com with a GHES GITHUB_SERVER_URL auto-derives the target to api.enterprise.githubcopilot.com (a catalog endpoint — correctly expects token); add a dedicated test preserving the custom-proxy override behavior; add the full GHES 400 bad request: Authorization header is badly formatted #5871 regression integration test.

[Copilot]

Pull request overview

Fixes a Copilot authentication regression where AWF_PLATFORM_TYPE (auto-injected as ghec on *.ghe.com runners by gh-aw) could incorrectly force Bearer auth, even for Copilot Business/Enterprise catalog endpoints that require the token <oauth> Authorization prefix.

Changes:

• Reorders copilotTargetRequiresGitHubTokenPrefix() to prioritize catalog endpoint detection (api.business.githubcopilot.com, api.enterprise.githubcopilot.com) ahead of the AWF_PLATFORM_TYPE override.
• Updates and expands unit tests to cover the full production scenario (Copilot Business target + *.ghe.com + AWF_PLATFORM_TYPE=ghec) and preserve the intended override behavior for custom/unknown targets.
• Adjusts adapter-level tests to match the corrected semantics (catalog endpoints always use token, custom targets may still be forced to Bearer via platform override).

Show a summary per file

File	Description
containers/api-proxy/providers/copilot-auth.js	Fixes auth-prefix decision ordering so catalog endpoints always require token, independent of AWF_PLATFORM_TYPE.
containers/api-proxy/copilot-auth.test.js	Corrects prior expectation and adds regression coverage for the GHEC + Business endpoint scenario.
containers/api-proxy/copilot-adapter-enterprise.test.js	Aligns adapter behavior tests with the new ordering and adds a #5871 regression test at the adapter level.

Review details

Tip

Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

• Files reviewed: 3/3 changed files
• Comments generated: 0
• Review effort level: Low

[github-actions]

✅ Copilot review passed with no inline comments.

@copilot Add the ready-for-aw label to this PR to trigger agentic CI smoke tests.

[github-actions]

✅ Coverage Check Passed

Overall Coverage

Metric	Base	PR	Delta
Lines	98.59%	98.63%	📈 +0.04%
Statements	98.52%	98.55%	📈 +0.03%
Functions	99.43%	99.43%	➡️ +0.00%
Branches	94.33%	94.33%	➡️ +0.00%

📁 Per-file Coverage Changes (1 files)

File	Lines (Before → After)	Statements (Before → After)
src/workdir-setup.ts	93.0% → 94.8% (+1.74%)	93.0% → 94.8% (+1.74%)

---

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

[github-actions]

✅ Contribution Check completed successfully!

PR #5872 follows the applicable CONTRIBUTING.md guidelines: clear description referencing #5871, tests included for the bug fix, changes are in the appropriate containers/api-proxy files, and no documentation update appears required for this regression fix.

[github-actions]

✅ Smoke Copilot BYOK AOAI (Entra) completed. Copilot AOAI BYOK (Entra) mode operational. 🔓

[github-actions]

Chroot tests failed Smoke Chroot failed - See logs for details.

[github-actions]

✅ Build Test Suite completed successfully!

[github-actions]

✅ Smoke Gemini completed. All facets verified. 💎

Smoke test complete. GitHub MCP, File Writing, and Bash tools passed. GitHub.com connectivity failed. Overall status: FAIL.

[github-actions]

🔑 Smoke Copilot PAT PAT auth validated. All systems operational. ✅

[github-actions]

📰 VERDICT: Smoke Copilot has concluded. All systems operational. This is a developing story. 🎤

[github-actions]

✅ Smoke Copilot BYOK AOAI (api-key) completed. Copilot AOAI BYOK (api-key) mode operational. 🔓

[github-actions]

✅ Smoke Claude passed

[github-actions]

📡 Smoke OTel Tracing completed. All tracing scenarios validated. ✅

[github-actions]

✨ The prophecy is fulfilled... Smoke Codex has completed its mystical journey. The stars align. 🌟

FAIL: merged PR checks ✅, file/build ✅, discussion ✅, Playwright unavailable ❌, no PR context for PR comment/label.

[github-actions]

✅ Security Guard completed successfully!

PR #5872 security review complete: no security-weakening changes detected. Changes only reorder authorization prefix logic to prioritize catalog endpoints (api.business.githubcopilot.com, api.enterprise.githubcopilot.com), making authentication checks MORE restrictive, not less. No firewall, egress, capability, or input validation changes.

[github-actions]

✅ Smoke Copilot BYOK completed. Copilot BYOK mode operational. 🔓

[github-actions]

🔌 Smoke Services — All services reachable! ✅

[github-actions]

Smoke Test: Claude Engine Validation

Check	Result
API Status	✅ PASS
GH Check	✅ PASS
File Status	✅ PASS

Overall Result: PASS ✅

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

Generated by Smoke Claude for #5872 · 55.6 AIC · ⊞ 3.3K · ◷
_{Add label ready-for-aw to run again}

[github-actions]

Smoke Test: Copilot BYOK (Direct) Mode

✅ GitHub MCP Connectivity
✅ GitHub.com HTTP 200
✅ File Write/Read Test
✅ BYOK Inference via api-proxy → api.githubcopilot.com

Result: PASS — Running in direct BYOK mode with placeholder credentials isolated in agent.

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

🔑 BYOK report filed by Smoke Copilot BYOK
_{Add label ready-for-aw to run again}

[github-actions]

🔥 Smoke Test Results — Copilot Engine Validation

Test	Result
GitHub MCP Connectivity	✅
GitHub.com HTTP	✅ (200)
File Write/Read	✅

Overall: PASS

@lpcox All smoke tests passed.

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

📰 BREAKING: Report filed by Smoke Copilot
_{Add label ready-for-aw to run again}

[github-actions]

🔬 Smoke Test: Copilot PAT Auth — PASS

Test	Result
GitHub MCP connectivity	✅
GitHub.com HTTP	✅
File write/read	✅

Overall: PASS · Auth mode: PAT (COPILOT_GITHUB_TOKEN)

cc @lpcox

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

🔑 PAT report filed by Smoke Copilot PAT
_{Add label ready-for-aw to run again}

[github-actions]

Smoke Test Results

• Redis PING: ❌ Network unreachable
• PostgreSQL pg_isready: ❌ No response
• PostgreSQL SELECT 1: ❌ Network unreachable

Overall: FAIL — host.docker.internal (172.17.0.1) is not reachable from this sandbox. Services containers are not accessible.

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

🔌 Service connectivity validated by Smoke Services
_{Add label ready-for-aw to run again}

[github-actions]

Smoke Test: Copilot BYOK (Direct) Mode — Azure OpenAI

• ✅ GitHub MCP connectivity (pre-fetched data)
• ✅ GitHub.com HTTP connectivity
• ✅ File write/read test
• ✅ Direct BYOK inference via Azure Entra
  Mode: AWF_AUTH_TYPE=github-oidc + AWF_AUTH_AZURE_* + COPILOT_PROVIDER_BASE_URL via api-proxy → Azure OpenAI (Foundry, o4-mini-aw)
  Overall: PASS
  cc @lpcox

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

🪪 BYOK (AOAI Entra) report filed by Smoke Copilot BYOK AOAI (Entra)
_{Add label ready-for-aw to run again}

[github-actions]

@lpcox

✅ GitHub MCP Testing
✅ GitHub.com Connectivity
✅ File Write/Read Test
✅ BYOK Inference Test

Running in direct BYOK mode (COPILOT_PROVIDER_API_KEY + COPILOT_PROVIDER_BASE_URL) via api-proxy → Azure OpenAI (Foundry, o4-mini-aw)

Overall status: PASS

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

🔑 BYOK (AOAI api-key) report filed by Smoke Copilot BYOK AOAI (api-key)
_{Add label ready-for-aw to run again}

[github-actions]

Smoke Test: API Proxy OpenTelemetry Tracing

Scenario	Status	Notes
1. Module Loading	✅	otel.js loads; exports startRequestSpan, setTokenAttributes, setBudgetAttributes, endSpan, endSpanError, shutdown, isEnabled; isEnabled() returns true
2. Test Suite	✅	59 tests passed, 0 failed across otel.test.js + otel-fanout.test.js
3. Env Var Forwarding	✅	api-proxy-env-config.ts forwards GH_AW_OTLP_ENDPOINTS, OTEL_EXPORTER_OTLP_ENDPOINT/HEADERS, GITHUB_AW_OTEL_TRACE_ID/PARENT_SPAN_ID, OTEL_SERVICE_NAME; verified by agent-environment-credentials.test.ts
4. Token Tracker Integration	✅	onUsage callback present in token-tracker-http.js (lines 283, 324) — OTEL hook point confirmed
5. OTEL Diagnostics	✅	FileSpanExporter fallback writes to /var/log/api-proxy/otel.jsonl when no OTLP endpoint configured — graceful degradation confirmed

All 5 scenarios passed. OTEL tracing integration is correctly implemented.

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

📡 OTel tracing validated by Smoke OTel Tracing
_{Add label ready-for-aw to run again}

[github-actions]

Smoke Test: Gemini Engine Validation

• GitHub MCP Testing: ✅
  • refactor: extract shared credential-isolation scaffold for API proxy providers
  • refactor: eliminate duplicate provider env-var constants via JSON single source of truth
• GitHub.com Connectivity: ❌ (HTTP 000/Connect Failure)
• File Writing Testing: ✅
• Bash Tool Testing: ✅

Overall Status: FAIL

Warning

Firewall blocked 1 domain

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

• localhost

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

network:
  allowed:
    - defaults
    - "localhost"

See Network Configuration for more information.

💎 Faceted by Smoke Gemini
_{Add label ready-for-aw to run again}

[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

Warning

Firewall blocked 1 domain

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

• awmgmcpg

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

network:
  allowed:
    - defaults
    - "awmgmcpg"

See Network Configuration for more information.

Generated by Build Test Suite for #5872 · 42.3 AIC · ⊞ 6.9K · ◷
_{Add label ready-for-aw to run again}