feat: [1/2] add clickable generation status annotations

[dazzatronus]

Hosts need a way to open a cost breakdown or recovery view from a generation annotation. Add an optional onActivate callback to the existing /internal status type and render actionable annotations as native buttons beside Generate. Passive annotations remain text; error statuses still block generation.

Activation: the host must register a status provider and supply onActivate. No root-package exports are added.

Verify: npm run verify:ci passes (2,133 tests, lint, types, build and package contracts). Browser checks cover pointer, Enter and Space activation, passive/absent status and error blocking.

Order	PR	Change	Why separate
1	#199 current	Clickable status annotations	Host actions and toolbar presentation
2	#200	Seed source images	Model selection and stored inputs

flowchart TD
    A[Choose a generation model] --> B{Settings hook enabled and model accepts source images?}
    B -->|No| C[Keep current inputs]
    B -->|Yes| D{Image source present and references empty?}
    D -->|Yes| E[Use clip source as Image 1]
    D -->|No| C
    C --> F{Status hook registered?}
    E --> F
    F -->|No| G[Use normal generation controls]
    F -->|Yes| H[Host supplies status for current settings]
    H --> I{Error status?}
    I -->|Yes| J[Block Generate and Enter]
    I -->|No| K[Apply normal generation checks]
    H --> L{Host supplied an action?}
    L -->|No| M[Show status as text]
    L -->|Yes| N[Show status button beside Generate]
    N --> O[Click or use Enter or Space]
    O --> P[Open the host view]

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Rules: model selection, status activation, generation guard.

[github-actions]

🎉 This PR is included in version 2.22.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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