From d16b6cd3cc38e46ef7ed9983530bc08d5011e4a1 Mon Sep 17 00:00:00 2001
From: Jan Svabenik <jan@svabi.ch>
Date: Sat, 21 Mar 2026 21:29:09 +0100
Subject: [PATCH] feat: add surveillance/display level metadata

---
 cmd/sdrd/phase_state_test.go |  2 +-
 cmd/sdrd/pipeline_runtime.go | 24 +++++++++++++++++-------
 internal/pipeline/phases.go  | 16 +++++++++-------
 3 files changed, 27 insertions(+), 15 deletions(-)

diff --git a/cmd/sdrd/phase_state_test.go b/cmd/sdrd/phase_state_test.go
index 9438501..ab29a04 100644
--- a/cmd/sdrd/phase_state_test.go
+++ b/cmd/sdrd/phase_state_test.go
@@ -8,7 +8,7 @@ import (
 
 func TestPhaseStateCarriesPhaseResults(t *testing.T) {
 	ps := &phaseState{
-		surveillance:    pipeline.SurveillanceResult{NoiseFloor: -90, Scheduled: []pipeline.ScheduledCandidate{{Candidate: pipeline.Candidate{ID: 1}, Priority: 5}}},
+		surveillance:    pipeline.SurveillanceResult{Level: pipeline.AnalysisLevel{Name: "surveillance"}, NoiseFloor: -90, Scheduled: []pipeline.ScheduledCandidate{{Candidate: pipeline.Candidate{ID: 1}, Priority: 5}}},
 		refinementInput: pipeline.RefinementInput{Scheduled: []pipeline.ScheduledCandidate{{Candidate: pipeline.Candidate{ID: 1}, Priority: 5}}, SampleRate: 2048000, FFTSize: 2048, CenterHz: 7.1e6},
 		refinement:      pipeline.RefinementResult{Level: pipeline.AnalysisLevel{Name: "refinement"}, Decisions: []pipeline.SignalDecision{{ShouldRecord: true}}, Candidates: []pipeline.Candidate{{ID: 1}}},
 		queueStats:      decisionQueueStats{RecordQueued: 1},
diff --git a/cmd/sdrd/pipeline_runtime.go b/cmd/sdrd/pipeline_runtime.go
index 465c99e..a9d8484 100644
--- a/cmd/sdrd/pipeline_runtime.go
+++ b/cmd/sdrd/pipeline_runtime.go
@@ -229,14 +229,24 @@ func (rt *dspRuntime) buildSurveillanceResult(art *spectrumArtifacts) pipeline.S
 		SpanHz:     float64(rt.cfg.SampleRate),
 		Source:     "baseband",
 	}
+	displayLevel := pipeline.AnalysisLevel{
+		Name:       "presentation",
+		SampleRate: rt.cfg.SampleRate,
+		FFTSize:    rt.cfg.Surveillance.DisplayBins,
+		CenterHz:   rt.cfg.CenterHz,
+		SpanHz:     float64(rt.cfg.SampleRate),
+		Source:     "display",
+	}
 	return pipeline.SurveillanceResult{
-		Level:      level,
-		Candidates: candidates,
-		Scheduled:  scheduled,
-		Finished:   art.finished,
-		Signals:    art.detected,
-		NoiseFloor: art.noiseFloor,
-		Thresholds: art.thresholds,
+		Level:        level,
+		Levels:       []pipeline.AnalysisLevel{level},
+		DisplayLevel: displayLevel,
+		Candidates:   candidates,
+		Scheduled:    scheduled,
+		Finished:     art.finished,
+		Signals:      art.detected,
+		NoiseFloor:   art.noiseFloor,
+		Thresholds:   art.thresholds,
 	}
 }
 
diff --git a/internal/pipeline/phases.go b/internal/pipeline/phases.go
index 71a4084..f0ceee3 100644
--- a/internal/pipeline/phases.go
+++ b/internal/pipeline/phases.go
@@ -12,13 +12,15 @@ type AnalysisLevel struct {
 }
 
 type SurveillanceResult struct {
-	Level      AnalysisLevel        `json:"level"`
-	Candidates []Candidate          `json:"candidates"`
-	Scheduled  []ScheduledCandidate `json:"scheduled,omitempty"`
-	Finished   []detector.Event     `json:"finished"`
-	Signals    []detector.Signal    `json:"signals"`
-	NoiseFloor float64              `json:"noise_floor"`
-	Thresholds []float64            `json:"thresholds,omitempty"`
+	Level        AnalysisLevel        `json:"level"`
+	Levels       []AnalysisLevel      `json:"levels,omitempty"`
+	Candidates   []Candidate          `json:"candidates"`
+	Scheduled    []ScheduledCandidate `json:"scheduled,omitempty"`
+	Finished     []detector.Event     `json:"finished"`
+	Signals      []detector.Signal    `json:"signals"`
+	NoiseFloor   float64              `json:"noise_floor"`
+	Thresholds   []float64            `json:"thresholds,omitempty"`
+	DisplayLevel AnalysisLevel        `json:"display_level"`
 }
 
 type RefinementPlan struct {