feat: make firewall activity collapsible like other report sections

[Copilot]

The Firewall Activity section used a heading outside the <details> tag, making it non-collapsible unlike other report sections (Safe Inputs MCP Server Logs, MCP Gateway).

Changes

• src/logs/stats-formatter.ts: Moved "Firewall Activity" into <summary> tag, added ▼ prefix to stats line
• src/logs/stats-formatter.test.ts: Updated test expectations
• docs-site/src/content/docs/reference/cli-reference.md: Updated example output

Before/After

Before:

### Firewall Activity

<details>
<summary>46 requests | 36 allowed | 10 blocked | 9 unique domains</summary>

After:

<details>
<summary>Firewall Activity</summary>

▼ 46 requests | 36 allowed | 10 blocked | 9 unique domains

Screenshot

Original prompt

---

This section details on the original issue you should resolve

<issue_title>markdown match style of other reports</issue_title>
<issue_description>Show as collapsed details section

</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes markdown match style of other reports #201

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[github-actions]

Test Coverage Report

Metric	Coverage	Covered/Total
Lines	77.12%	1281/1661
Statements	77.17%	1312/1700
Functions	77.04%	141/183
Branches	69.29%	431/622

Coverage Thresholds

The project has the following coverage thresholds configured:

• Lines: 38%
• Statements: 38%
• Functions: 35%
• Branches: 30%

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Coverage report generated by `npm run test:coverage`

[Copilot]

Pull request overview

This PR makes the Firewall Activity section collapsible by moving the heading inside the <summary> tag, matching the design pattern used by other report sections like Safe Inputs MCP Server Logs and MCP Gateway.

Changes:

• Moved "Firewall Activity" heading from outside to inside the <summary> tag
• Added ▼ prefix to the stats line and moved it outside the <summary> tag
• Updated all test expectations to match the new format

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/logs/stats-formatter.ts	Restructured markdown output to make the section properly collapsible with title in summary tag
src/logs/stats-formatter.test.ts	Updated test expectations to verify the new collapsible format
docs-site/src/content/docs/reference/cli-reference.md	Updated example output documentation to reflect the new format

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