…to 'LLMWhisperer Key'

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

…dProductPage query param on /landing

The LLMWhisperer v2 adapter helper text now links straight to the API keys
page: /landing?selectedProduct=llm-whisperer&selectedProductPage=api-keys.
The page slug is validated against a whitelist, persisted across the OAuth
roundtrip via the product store, and consumed one-shot by the post-login
redirects in RequireAuth/RequireGuest.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Delete confirmations now read "Are you sure you want to delete the
<Type> '<Name>'?" across API deployments, pipelines, API keys, platform
keys, users, notifications, profiles and workflow steps. Also removes
the unused pipelines-or-deployments DeleteModal and legacy GridView
widget, both of which carried the old generic text.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

…PI deployments and ETL pipelines

The execution detail page now has a Cost column per file (aggregated
from usage rows keyed by run_id) and a summary card with the execution's
total LLM usage cost and average cost per processed file, so customers
can see what a use case costs without calling the metrics API.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>