[DevelopmentCats]

Part of #65.

On hybrid models (linear-attention or Mamba layers), llama.cpp reuses a cached prompt only up to the start of a user message, so the first turn of a chat re-reads everything before it unless that part matches an earlier chat. inspect now says so.

• hf.Arch.Hybrid() reads layer_types: a model is hybrid when some layers are not attention.
• resolve.Detail gets hybrid and hybrid_note. ForProvider fills the note from the serving engine.
• Engines can carry an optional notes.hybrid sentence. Only catalogue/engines/llamacpp.json sets one, so the wording is data, not Go.
• Documented in catalogue/engines/README.md and the engine fields in docs/providers.md. CHANGELOG entry added.

The warm-up side of #65 is #67.

[Copilot]

🟢 Approval recommended

No active review issues remain for the hybrid-model inspection guidance change.

No open issues 🎉

What changed in this PR

Adds engine-specific guidance to inspect for hybrid models, addressing the explanatory part of #65 without changing prompt-cache behavior or adding warm-up logic.

Changes:

• Detects hybrid models from architecture layer_types and exposes hybrid details during inspection.
• Adds optional engine notes and displays llama.cpp’s guidance on keeping system prompts and tools identical between chats.
• Adds detection and provider-note tests, documentation, and a changelog entry.

File	Description
internal/​resolve/​resolve.go	Carries hybrid detection and the selected engine’s note.
internal/​resolve/​resolve_internal_test.go	Tests when provider-specific hybrid notes are populated.
internal/​hf/​kv_internal_test.go	Tests hybrid detection, including nested text configuration.
internal/​hf/​arch.go	Detects hybrid architectures from layer types.
internal/​engine/​registry.go	Exposes hybrid notes through the provider interface.
internal/​engine/​engine.go	Adds engine note fields and an accessor.
internal/​cli/​search.go	Prints the hybrid note in inspection output.
docs/​providers.md	Documents optional engine notes.
CHANGELOG.md	Records the new inspection guidance.
catalogue/​engines/​README.md	Explains how engine definitions supply hybrid notes.
catalogue/​engines/​llamacpp.json	Supplies llama.cpp’s hybrid prompt-cache guidance.

_{Review effort: Balanced}