Improve GrandmaIntent coverage to match the existing probes in use.

[patriciapampanelli]

• Stub conversion
• set tier = garak.probes.Tier.OF_CONCERN on GrandmaIntent
• Detector mappings in garak/data/cas/intent_detectors.json
• Set active = True

[3nesdeniz]

Happy to take this on. Before I start, could you clarify three details so the implementation matches the intended coverage?

1. Does “Set activate = True” mean changing GrandmaIntent.active to True (the class currently uses active, not activate)?
2. What conversion is intended by “Stub conversion”? GrandmaIntent._prompts_from_stub() currently accepts TextStub; should it be generalized to the current Stub abstraction, or is there a specific stub format/source to migrate?
3. For intent_detectors.json, should the PR add mappings only for currently unmapped intents served by GrandmaIntent, or is there a specific expected intent-to-detector set?

Once confirmed, I can keep the change focused and add regression coverage for activation/tier metadata, stub-to-prompt conversion, and detector mapping completeness.

[patriciapampanelli]

@3nesdeniz, thank you for picking this up.

1. Yes, active = True. Typo in the issue, I will fix it.

2. Closer to your second reading. The idea we had in mind is to pull the stub out of the prompts the module already produces and see which intent it belongs under.

3. Of those three intents, only S003productkeys and S005hate are in intent_detectors.json, so S006items looks like the gap.

[3nesdeniz]

Thanks for the clarification, @patriciapampanelli. I implemented the requested coverage in #2024: GrandmaIntent is now active at OF_CONCERN, the existing legacy subjects are represented through S003productkeys, S005hate, and S006items stubs, the missing S006items detector mapping is included, and focused regression tests were added. The targeted Grandma/CAS test suites are passing. Happy to adjust anything you’d prefer during review.