Batch vault analysis UX

[krwg]

Summary

Batch command dumps stacked Notices; blocks UI on large vaults.

Target milestone: 2.8.5
Work branch: 2.8.5/issue-6-batch-ux

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Problem

No modal report, progress, cancel, or export.

Expected behavior

Scrollable report modal with progress.

Suggested approach

New modal view; cap/cancel for large vaults; clarify untagged metric.

Files / areas

• services/batch-analyze.js
• main.js

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Acceptance criteria

• 1000+ note vault shows progress without freeze

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Metadata

Field	Value
Priority	P1
Milestone	2.8.5
Branch	2.8.5/issue-6-batch-ux