Sprint 6: Forensic Cockpit GUI + Timeline/Charts/Exports

[USTungsten]

Sprint 6 — Completed

Commit: 7fe45a5

Backend routes added

• GET /api/cases/{id}/timeline — timeline from findings + provenance
• GET /api/cases/{id}/charts/data — time-series data with stream selection
• GET /api/cases/{id}/exports — export file listing
• POST /api/cases/{id}/exports/bundle — JSON case bundle creation
• GET /api/cases/{id}/exports/files/{filename} — file download

GUI panels built/improved

• 9-tab workspace: Evidence | Diagnostics | Plugins | Findings | Timeline | Charts | Hypotheses | Exports | Audit
• Evidence panel: SHA tooltips, IMMUTABLE badge, parser eligibility
• Diagnostics: scope banner, stream coverage table
• Plugins: summary row, stream check marks, execution status badges
• Findings: severity filter bar, jump-to-timeline/charts, collapsible metrics
• Timeline: vertical timeline with severity markers
• Charts: HTML5 Canvas line charts with finding markers
• Hypotheses: status badges, linked finding refs
• Exports: bundle creation + download

Sprint 5 verification fixes included

• trust_state in plugin_diagnostics.json
• execution_status property on PluginDiagnostics
• _PLUGIN_STREAM_MAP updated for all 11 plugins

Tests

464 passing (448 prior + 16 new Sprint 6 tests)