When timeline event is clicked in expert mode, emit jump_to_time command
with event timestamp. The time-travel player pauses live playback, seeks
CSI recording buffer to timestamp, and begins replay. Selected event
highlights in timeline and "Now replaying" chip appears in header.
Backend: POST /api/replay/jump-to-time creates replay session centered
on timestamp, replaces previous active session. Frontend: handleSeek()
in sidebar-timeline delegates to SpaxelReplay.jumpToTime() which calls
the API, shows replay control bar, and notifies Viz3D.
Tests: 7 Go test cases for jump-to-time endpoint, 8 JS test cases for
tap-to-jump interaction, event highlighting, and now-replaying chip.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit implements the replay feature that allows users to pause the
live 3D view, scrub through a 48-hour recording buffer, and replay the 3D
scene exactly as it was at any historical moment.
Key components:
- Recording buffer with SeekToTimestamp for time-travel navigation
- Replay engine with session management (start, stop, seek, play, pause)
- Replay signal processing pipeline with tunable parameters
- REST API endpoints for replay control
- Dashboard UI with timeline scrubber, playback controls, and tuning panel
- Comprehensive test coverage for all replay functionality
Acceptance criteria met:
- Seek to any point in 48-hour window completes in < 1 second
- Replay produces identical blob positions to original live processing
- Parameter sliders re-process in < 3 seconds
- "Apply to Live" correctly writes parameter changes
- Timeline scrubber event markers correctly align
- "Back to Live" correctly resumes live detection
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit adds complete time-travel debugging capabilities for CSI data,
enabling users to pause the live 3D view, scrub through historical data,
and replay the 3D scene exactly as it was at any point in the 48-hour recording
window.
Key features:
- ReplayEngine with state machine (LIVE, PAUSED, REPLAYING, SEEKING)
- Replay pipeline separate from live pipeline with tunable parameters
- WebSocket command handlers for replay control (seek, play, pause, set_params, apply_to_live)
- Timeline scrubber UI with playback controls and parameter tuning panel
- Seek performance < 1 second for all active links
- Parameter sliders for motion threshold, baseline tau, fresnel decay, subcarriers, breathing sensitivity
Implementation:
- mothership/internal/replay/engine.go: ReplayEngine with state machine
- mothership/internal/replay/pipeline.go: Replay signal processing pipeline
- mothership/internal/replay/types.go: Session types and TunableParams
- mothership/internal/dashboard/server.go: WebSocket command handlers
- dashboard/js/replay.js: Timeline scrubber UI with playback controls
- mothership/internal/dashboard/hub.go: BroadcastReplayBlobs method
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add X-ray overlay showing contributing links to detections with confidence breakdown.
- Users can click "Why?" on any blob to see detailed explanation
- Contributing links are highlighted with Fresnel zone visualization
- Per-link contribution breakdown shows deltaRMS, zone number, weight
- BLE identity match details displayed when available
- Confidence gauge shows overall detection certainty
Explainability is accessible via:
- Right-click context menu on blob figures
- "Why?" button in blob hover tooltip
- Click directly on humanoid blob figures
- Timeline event "Why?" buttons
Accepts: Users can see exactly why a detection was triggered with visual overlays and confidence metrics.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
