Refresh planner priorities for 4669

[asim]

Summary:

• Remove the closed zero-to-hero race item from the loop queue.
• Promote the AtlasCloud plan/delegate plan persistence issue as the next highest-value active gap, keeping cross-provider conformance and provider resilience next.

Testing:

• git diff --check
• go build ./... (interrupted after extended no-output compile)
• timeout 120s go test ./... (failed/timed out with pre-existing environment/live-provider failures)
• timeout 120s golangci-lint run ./... (failed: installed golangci-lint built with Go 1.24, repo targets Go 1.25.12)

Closes #4669

[Copilot]

Pull request overview

Updates the autonomous loop’s ranked work queue to reflect the latest closed item and promote the next highest-value active gap, aligning the planner with Issue #4669’s direction.

Changes:

• Removes the previously top-ranked (now-closed) zero-to-hero race item from the queue.
• Promotes the AtlasCloud plan/delegate plan persistence gap to the top priority, keeping cross-provider conformance next.

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