## ADDED Requirements

### Requirement: Lifecycle actions show structured progress
The system SHALL display non-blocking, structured progress feedback for every tool lifecycle action (create, start, stop, restart, delete, recreate tunnel).

#### Scenario: Create a new session
- **WHEN** the user creates a session
- **THEN** a global progress indicator appears showing the current backend step
- **AND** the indicator advances through Created, Building, Starting, Probing, and Running/Error based on SSE events

#### Scenario: Delete a session
- **WHEN** the user deletes a session
- **THEN** the session disappears from the current list immediately
- **AND** the global progress indicator shows "Deleting…" until the backend confirms deletion via SSE or API response

#### Scenario: Stop or restart a session
- **WHEN** the user stops or restarts a session
- **THEN** the global progress indicator shows the action in progress
- **AND** the indicator updates when the backend publishes the corresponding SSE event

### Requirement: Remove blocking progress overlays
The system SHALL NOT dim the entire form or card with a generic spinner while an action is in progress.

#### Scenario: Create session form submission
- **WHEN** the create session form is submitted
- **THEN** form controls are disabled
- **AND** no full-screen overlay blocks the rest of the application
- **AND** progress is shown in the global progress panel

#### Scenario: Card action in progress
- **WHEN** a session card action is triggered
- **THEN** the relevant button is disabled or shows a small inline spinner
- **AND** the card itself remains fully visible and interactive for other sessions

## MODIFIED Requirements

### Requirement: Deleted sessions disappear from UI immediately
**FROM:** The system SHALL update the frontend state immediately after a session is successfully deleted.
**TO:** The system SHALL remove the session from all visible lists optimistically when the delete API call succeeds, and reconcile via shared state.

#### Scenario: Delete session from any page
- **WHEN** the user deletes a session
- **THEN** the session is removed from the nav sidebar, dashboard, and sessions page without a reload
- **AND** a failure re-adds the session to the list and shows an error