Restore compact model forwarding settings

[OLuckyO]

Restores the compact model forwarding rules editor in Settings so persisted compactModelForwardRules can be reviewed and updated.

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Adds support in the admin settings UI for configuring “compact” model forwarding rules (for /v1/responses/compact) alongside the existing model forward rules.

Changes:

• Introduces new draft state and normalization for compactModelForwardRules.
• Adds update/commit handlers to persist compactModelForwardRules to settings.
• Adds a new ModelForwardRulesEditor section for compact routing rules in the Settings page.

Comments suppressed due to low confidence (1)

apps/src/app/settings/page.tsx:2

• Normalization is applied redundantly: updateCompactModelForwardRuleRows already calls ensureModelForwardRuleRows(sourceRows) before invoking the updater, but onRowsChange wraps the updater with another ensureModelForwardRuleRows(updater(rows)). This duplication makes it harder to reason about invariants and can add unnecessary work. Centralize normalization in one place (preferably inside updateCompactModelForwardRuleRows) and have onRowsChange pass the updater through directly. Also consider ensuring rows right before serialization in commitCompactModelForwardRulesDraft to guarantee the persisted format is normalized even if future callers update the draft without ensuring.

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