Integration review: activity history and AI-assisted policy evaluation

[t-prda]

Purpose

Provide a reviewable integration branch that combines the two open Expense Agent changes:

• Add expense activity history foundation #10255 — expense activity history foundation
• Add AI-assisted policy evaluation backend to Expense Agent #10031 — AI-assisted policy evaluation backend

Integration decisions

• Preserve both capabilities: ActivityLog remains ordinal 4 and AiAssistedPolicyEvaluation uses ordinal 5.

• Preserve both capability-provider branches and test coverage.

• Combine the Expense Agent app ID range as 7073–7126.

• Resolve the page 7123 collision by keeping Expense Activity Log FactBox at 7123 and moving Expense Policy Flags to unique page ID 7107.

• Expense Policy Flag Test uses free in-range codeunit 148340 instead of conflicting 148339.

Related work

• AB#644172
• AB#626515

Pull requests

• Combined BCApps draft: Combine expense activity history and AI-assisted policy evaluation #10292
• Standalone Add AI-assisted policy evaluation backend to Expense Agent #10031 NAV uptake: https://dynamicssmb2.visualstudio.com/Dynamics%20SMB/_git/NAV/pullrequest/252701
• Combined NAV uptake: https://dynamicssmb2.visualstudio.com/Dynamics%20SMB/_git/NAV/pullrequest/252702

This issue exists only to back the draft integration PR; the feature work remains owned by the two source PRs/work items.

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