Protocol browser/viewer in workspace dashboard

[waleedkadous]

Feature Request

Add a Protocol Browser tab to the workspace dashboard showing available protocols and their current state visually.

Proposed Features

• Protocol catalog: List all available protocols (SPIR, ASPIR, TICK, BUGFIX, EXPERIMENT, MAINTAIN) with descriptions
• Phase diagrams: Visual representation of each protocol's phases, gates, and transitions
• Active project overlay: Show where each active builder currently is in its protocol flow
• Gate status: Highlight pending gates (spec-approval, plan-approval) with approve actions
• Phase history: Timeline view of completed phases with timestamps and consultation results

Depends on

• Dashboard statistics tab in right panel #456 (Dashboard statistics tab) — shares the right-panel tab infrastructure

Data Sources

• Protocol definition files (codev/protocols/*/protocol.json)
• Porch project state (codev/projects/*/status.yaml)
• Active builder status from Tower API