fix(cli): persist read TUI news

[catrielmuller]

Context

https://kilo-code.slack.com/archives/C09GD7US2UB/p1781261716763419

Summary

• persist opened TUI news IDs so viewed notifications no longer reappear
• show only unread notifications while allowing newly published news to appear normally
• add an explicit close button to the News dialog

Opening the News dialog is the read boundary: all notifications displayed in that dialog are recorded in the existing TUI KV store. This keeps the behavior local to the CLI and avoids requiring server-side read state.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

The implementation is clean and correct. The News namespace utility is well-designed — ids() defensive-casts the persisted value, unread() and read() are pure functions tested at the unit level, and the KV integration in kilo-news.tsx correctly snapshots unread() before calling kv.set so the read boundary is atomic.

Minor observations (not blocking):

• news_read_ids in the KV store grows unboundedly. For a low-volume notification service this is fine in practice, but if the ID set ever gets large, a future cleanup pass could prune IDs not present in the fetched notifications list.
• Line 61 of kilo-news.tsx calls unread() twice in JSX (unread()[0] and unread().length). Because unread is a createMemo, both calls are free (memoized) and return the same value — no correctness issue, just a cosmetic note.
• The dialog now has two close affordances: the existing esc button at the top-right and the new close button at the bottom. Both call dialog.clear(), which is intentional per the PR description.

Files Reviewed (5 files)

• .changeset/close-read-tui-news.md
• packages/opencode/src/kilocode/components/news.ts
• packages/opencode/src/kilocode/components/kilo-news.tsx
• packages/opencode/src/kilocode/components/dialog-kilo-notifications.tsx
• packages/opencode/test/kilocode/news.test.ts

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_{Reviewed by claude-4.6-sonnet-20260217 · 640,427 tokens}

_{Review guidance: REVIEW.md from base branch main}