fix: disable CDX-AG-002 agnix rule — 'Token efficiency' false positive

[agent-cairn]

Agnix CI fails on main with CDX-AG-002: Potential secret detected in AGENTS.md. The trigger is the text 'Token efficiency' which is not a secret — it's an ecosystem-wide boilerplate instruction from agent-core sync.

This adds CDX-AG-002 to disabled_rules with a comment explaining the false positive, matching the pattern already used in agent-sh/agentsys.

[gemini-code-assist]

Summary of Changes

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This pull request addresses a recurring CI failure on the main branch caused by the CDX-AG-002 AgniX rule. The rule incorrectly identified the phrase "Token efficiency" in AGENTS.md as a potential secret, despite it being a standard boilerplate instruction. By disabling this specific rule, the change ensures the CI pipeline passes without flagging legitimate, non-secret content, aligning with existing patterns for handling similar false positives.

Highlights

• AgniX CI Fix: Disabled the CDX-AG-002 AgniX rule to resolve a false positive detection of "Token efficiency" as a secret in AGENTS.md.

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[gemini-code-assist]

Code Review

This pull request disables the CDX-AG-002 rule in agnix to resolve a false positive secret detection in AGENTS.md. While this fixes the immediate CI failure, I've raised a concern about disabling a security rule globally. My feedback suggests exploring a more scoped-down approach to disabling the rule, if the tool supports it, to avoid potentially missing real secrets in the future.

[gemini-code-assist]

Disabling a secret detection rule globally for the entire repository can be a security risk, as it may prevent the detection of actual secrets committed in other files in the future. A more secure approach is to scope the exception as narrowly as possible. If agnix supports a more granular configuration, please consider disabling this rule only for AGENTS.md to limit the scope of this exception.