fix(hub-ui): support persistent toast notifications

[dvcolomban]

Summary

• allow autoDismiss: false in the public message type
• keep persistent toasts visible until explicit dismissal
• cancel an existing timer when a timed toast becomes persistent
• cover persistent, updated, and timed toast behavior with fake-timer tests

Validation

• pnpm lint
• pnpm knip
• pnpm test (117 files, 1,274 passed, 9 skipped)
• pnpm typecheck (38 tasks)
• pnpm build (27 tasks)

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[Copilot]

Pull request overview

This PR extends the hub message/toast contract to support persistent toast notifications by allowing autoDismiss: false, and updates the hub-ui toast state logic + adds fake-timer tests to validate persistent vs timed behavior.

Changes:

• Update DevframeMessageEntry.autoDismiss to accept false (persistent toast).
• Update hub-ui toast timer handling to avoid scheduling (and to cancel) timers for persistent toasts.
• Add vitest fake-timer coverage for persistent, updated, and timed toast scenarios.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
tests/snapshots/tsnapi/@devframes/hub/index.snapshot.d.ts	Updates public d.ts snapshot to reflect `autoDismiss?: number
packages/hub/src/types/messages.ts	Expands DevframeMessageEntry.autoDismiss type to include false for persistent toasts.
packages/hub-ui/src/client/state/toasts.ts	Cancels existing timers on toast updates and skips timer creation when autoDismiss === false.
packages/hub-ui/src/client/state/toasts.test.ts	Adds fake-timer tests for persistent vs timed toast behavior, including updating timed → persistent.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 4 changed files in this pull request and generated no new comments.