Scan HTTP API endpoints without changing policy precedence

[yui-stingray]

Summary

• extract both HTTP and HTTPS endpoint candidates
• treat URL schemes and hostnames case-insensitively while preserving userinfo, ports, path, and query case
• evaluate existing regex policies against both the original trimmed URL and a scheme/host canonical form so case-sensitive policies remain compatible
• preserve allow-before-deny behavior and existing sanitized public CLI finding payloads

Verification

• core regressions for HTTP, HTTPS, mixed-case schemes and hosts, scheme-specific policies, raw-policy compatibility, and allow precedence
• CLI regressions confirm raw endpoint details, token-shaped query values, and matched-policy details stay out of stdout and stderr
• targeted pytest passed
• independent review found no remaining actionable findings in this scoped change

No release is cut or published by this PR.

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Run ID: e0c33ee5-2b6f-45eb-9c22-c34998f7305c

📥 Commits

Reviewing files that changed from the base of the PR and between 41d08b5 and 2918a62.

📒 Files selected for processing (3)

• src/agent_guard/api_guard.py
• tests/cli/test_api.py
• tests/test_api_guard.py

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Preserve bare IPv6 host brackets

For a newly supported bare IPv6 endpoint such as http://[::1], this character-set rstrip removes the host's required closing bracket, producing http://[::1. Consequently, an exact forbidden rule such as ^http://\[::1\]$ is bypassed, and broader rules return a corrupted ApiGuardFinding.url; trim surrounding punctuation without consuming a bracket that belongs to an IPv6 authority.

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