## ADDED Requirements

### Requirement: AbortController for prediction requests
The prediction fetching functions (`fetchPredictions`, `handleFetchBatchPredictions`) SHALL use `AbortController` to cancel previous in-flight requests when a new request is initiated. A ref SHALL hold the current controller. Stale responses SHALL be discarded.

#### Scenario: Rapid clicks cancel previous request
- **WHEN** the user clicks "Run on Visible" twice quickly
- **THEN** the first request is aborted and only the second response is rendered

#### Scenario: Batch prediction cancellation
- **WHEN** the user clicks "Predict All" while a previous batch prediction is in progress
- **THEN** the previous batch request is aborted

### Requirement: Bounded prediction cache
The `predictionCacheRef` Map SHALL have a maximum size of 100 entries. When the cache exceeds the limit, the oldest entry (first inserted) SHALL be evicted. The cache SHALL function as a simple FIFO bounded map.

#### Scenario: Cache eviction at limit
- **WHEN** the cache has 100 entries and a new prediction result is cached
- **THEN** the oldest entry is deleted before the new one is inserted

#### Scenario: Cache size never exceeds limit
- **WHEN** 200 unique prediction ranges are fetched
- **THEN** the cache contains at most 100 entries at any point

### Requirement: Stable modelInfo reference for cache key
The `generateCacheKey` function SHALL read `modelInfo` from a ref (not from the `predictionState` closure) to prevent stale cache keys.

#### Scenario: Model change produces correct cache key
- **WHEN** the user loads a new model and then runs predictions
- **THEN** the cache key includes the new model version (not the old one from a stale closure)

### Requirement: Confirmation dialog for delete-all annotations
The "Delete All" annotations action SHALL show a confirmation dialog before executing. The dialog SHALL display "Are you sure you want to delete all annotations?" with "Cancel" and "Delete" buttons.

#### Scenario: User confirms deletion
- **WHEN** the user clicks "Delete All" and then clicks "Delete" in the confirmation dialog
- **THEN** all annotations for the active chart are deleted

#### Scenario: User cancels deletion
- **WHEN** the user clicks "Delete All" and then clicks "Cancel" in the confirmation dialog
- **THEN** no annotations are deleted
