fix: wrap placeholders in backticks in smoke-codex.md

[Copilot]

Markdown Lint CI was failing because __GH_AW_GITHUB_REPOSITORY__ placeholders in prose were interpreted as underscore-style bold (__text__), violating MD050 which requires asterisk-style bold.

Changes

• .github/workflows/smoke-codex.md: Wrapped all bare __GH_AW_GITHUB_REPOSITORY__ occurrences in backtick code spans; converted the double-quoted args string to a backtick code span for consistency

-1. **GitHub MCP Testing**: Review the last 2 merged pull requests in __GH_AW_GITHUB_REPOSITORY__
-2. **Safe Inputs GH CLI Testing**: Use the `safeinputs-gh` tool to query 2 pull requests from __GH_AW_GITHUB_REPOSITORY__ (use args: "pr list --repo __GH_AW_GITHUB_REPOSITORY__ --limit 2 --json number,title,author")
+1. **GitHub MCP Testing**: Review the last 2 merged pull requests in `__GH_AW_GITHUB_REPOSITORY__`
+2. **Safe Inputs GH CLI Testing**: Use the `safeinputs-gh` tool to query 2 pull requests from `__GH_AW_GITHUB_REPOSITORY__` (use args: `pr list --repo __GH_AW_GITHUB_REPOSITORY__ --limit 2 --json number,title,author`)

Code spans are not parsed for inline markdown formatting, so the __ delimiters are treated as literal characters. The placeholders are still substituted at runtime by substitute_placeholders.cjs as before.

Original prompt

Fix the failing GitHub Actions workflow Markdown Lint
Analyze the workflow logs, identify the root cause of the failure, and implement a fix.
Job ID: 67092043862
Job URL: https://github.com/github/gh-aw-firewall/actions/runs/23097349950/job/67092043862

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[github-actions]

Smoke test results:
PR titles: #1309 fix: match case-insensitive AWF binary step name in postprocessor; #1307 fix: make smoke-codex instructions clearly identifiable as workflow task for Codex model

1. GitHub MCP review: ✅
2. safeinputs-gh PR query: ❌
3. Playwright title contains "GitHub": ✅
4. Tavily search results returned: ❌
5. File write (/tmp/gh-aw/agent/smoke-test-codex-23097465964.txt): ✅
6. Bash cat verification: ✅
7. Discussion query + oracle comment: ❌
8. npm ci && npm run build: ✅
   Overall status: FAIL

🔮 The oracle has spoken through Smoke Codex

Warning

⚠️ Firewall blocked 2 domains

The following domains were blocked by the firewall during workflow execution:

• ab.chatgpt.com
• registry.npmjs.org

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

network:
  allowed:
    - defaults
    - "ab.chatgpt.com"
    - "registry.npmjs.org"

See Network Configuration for more information.

[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	✅	1/1 passed	✅ PASS
Go	env	✅	1/1 passed	✅ PASS
Go	uuid	✅	1/1 passed	✅ PASS
Java	gson	✅	1/1 passed	✅ PASS
Java	caffeine	✅	1/1 passed	✅ PASS
Node.js	clsx	✅	All passed	✅ PASS
Node.js	execa	✅	All passed	✅ PASS
Node.js	p-limit	✅	All 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 #1310 · ◷

[Copilot]

Pull request overview

Fixes MarkdownLint CI failures in the Codex smoke workflow instructions by preventing __GH_AW_*__ placeholders from being parsed as underscore-based bold, keeping the workflow body compliant with MD050.

Changes:

• Wrapped __GH_AW_GITHUB_REPOSITORY__ placeholders in inline code spans so __ is treated literally.
• Converted the GH CLI args example from a quoted string to an inline code span for consistent formatting.

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