Update Granite libraries documentation

[psschwei]

After the latest round of updates for the Granite libraries are merged (ex: #982 , #983 , and others) , we should update our documentation.

Adding this stub as a reminder, details to be filled out later.

xref #935

[psschwei]

consolidate all intrinsincs docs updates here, and open a discussion on where they should live (HF, switch repo, etc.)

[psschwei]

Did a pass through open issues to identify intrinsics/Granite-libraries documentation work to consolidate here.

Candidates to roll up

• docs: write safety guardrails how-to for Guardian Intrinsics API #802 — docs: write safety guardrails how-to for Guardian Intrinsics API
• docs: Rewrite Tutorial 04 Guardian steps for Guardian Intrinsics #639 — docs: Rewrite Tutorial 04 Guardian steps for Guardian Intrinsics
• Migrate creating_a_new_type_of_session.py example off deprecated GuardianCheck #1094 — Migrate creating_a_new_type_of_session.py example off deprecated GuardianCheck (blocked on feat: groundedness requirement #773 / feat: intrinsic-backed Requirement subclass for Guardian safety validation in repair loops #1071)
• typo in Adapters page of Mellea tutorial #182 — typo in Adapters page of Mellea tutorial
• bug: broken aLora example after intrinsics refactor #385 — bug: broken aLora example after intrinsics refactor
• fix: custom adapter training examples #542 — fix: custom adapter training examples (partly docs — training format, io.yaml, intrinsics/adapter mapping)

Related, keeping separate

• Prompting Fallbacks for Granite Library Intrinsics #993 — Prompting Fallbacks for Granite Library Intrinsics (design/strategy, not docs)
• feat: intrinsic-backed Requirement subclass for Guardian safety validation in repair loops #1071 — intrinsic-backed Requirement subclass (feature work; Migrate creating_a_new_type_of_session.py example off deprecated GuardianCheck #1094 is blocked on it)
• docs: add highlighted walkthrough for instruct-validate-repair examples #671 — IVR walkthrough (mostly about the IVR pattern, not intrinsics specifically)
• m alora train/upload should upload intrinsics #428 — m alora train/upload should upload intrinsics (CLI feature)