Fills the last two asset slots on Protect.

review-guardrail-activity gains the Analytics tab under the trigger
volume section: the four KPI cards, the Guardrail Triggers Over Time
chart, and the start of Top Triggered Rules, with a callout on the range
toggle. Captured on 30d rather than the specced 7d because the only
trigger data is four weeks old, and 30d is also the only range where Top
Triggered Rules populates.

turn-on-a-guardrail gains the walkthrough video, following the page from
the Rules catalog through to the pii-detector row in Overview.

Recording it surfaced four things the page did not say, all now folded
in: the pencil dialog is titled Configure: PII Detection, Confidence
Threshold is a slider rather than a field, a configured card flips from
Inherited to Custom and grows a Reset plus an action and threshold
summary, and Save & Activate confirms with a Config saved and activated
toast.

Signed-off-by: khushalsonawat <khushalsonawat@gmail.com>