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scene-actor-extraction/docs/traceability.md
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dtourolleandClaude Opus 5 f0c7126f80 feat: TrackRegistry — presence follows track extent 
The spine of the redesign. Presence is now the extent of a track an actor owns,
[first_seen, last_seen], rather than the subset of frames in which recognition
happened to succeed. An actor recognised only at the end of a long track is
present for all of it, which is what the scene-scoped ground truth actually
records.

AR-013 — `last_seen` as an optional carries the entire liveness state: unset
means on screen, set means went off at that timestamp and still revivable,
reaped means emitted and erased. No missing-frame counter, no expired flag. It
subsumes the tracker's existing two-pool split, so there is no separate revival
path — matching a dormant track is ordinary inter-frame association.

The asymmetry is the point: interior gaps are claimed, the trailing cool-down is
not. A face lost and re-associated within the timeout never closed its track, so
the gap is presence — someone briefly occluded has not left the scene. But a
track that dies ends at its last sighting, never at the death time. That is
precisely the over-claim the retired extinction_sec keep-alive produced, where
presence ran on into the closing credits.

AR-014 — a belief swap A→B closes the track and opens a successor at the swap
frame. Not a correction: two non-twins both clearing the threshold on one face
is not realistic, whereas a track_id carried across a viewpoint change onto a
different person is. Treating it as a swap-and-continue would emit one window
blending two people; treating it as a boundary yields two that are each right.

AR-015 — two live tracks owned by one actor means at least one is wrong, since a
person cannot be in two places at once. A reverse index catches it on the update
that causes it rather than by scanning. This makes identity a third cut
detector, independent of the histogram and TransNetV2 and firing where those
failed.

AR-016 — flush() closes tracks still live at EOF. Without it a film ending
mid-shot silently drops its closing cast, which presents as a recognition miss
rather than a bookkeeping bug.

Reaping hands the dead track to the aggregator and erases it, so the registry
holds only live tracks and its size is bounded by concurrent on-screen faces
rather than growing with the film.

Locking: a frame's association pass is atomic as a unit via FrameScope, since
per-call locking would let another thread observe a half-updated frame.
owner() reads tally and verdict under one lock — separately, a track could be
both unowned and owned within a single promotion decision. A vote for an
already-reaped track is dropped and counted, because a nonzero count means the
timeout is shorter than the matcher's lag.

11 unit tests, driven directly against the registry with no network and no
fixture — the awkward cases are constructed rather than hunted for. Suite: 75
cases, 3236 assertions. Coverage 14/63 to 20/63.

Not yet wired into FaceTrackerFunc; that is AR-007/AR-008.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

TRACES: AR-012, AR-013, AR-014, AR-015, AR-016, AR-017 | SR-002
2026-07-31 09:08:39 +02:00

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# Requirements traceability matrix
<!-- GENERATED FILE - do not edit by hand. -->
<!-- Regenerate: scripts/traceability/traceability-gate.sh -->
**Generated:** 2026-07-31T07:07:04+00:00
Denominators are read from [`requirements.md`](requirements.md) at run time, never hardcoded. Coverage counts a requirement only when it is tagged in source **and** has a verification tier this repo's CI host can execute (`T1, T2, T3, static`).
## Summary
| Metric | Value |
|---|---|
| Source files scanned | 94 |
| TRACES tags found | 76 |
| EXCEPTION tags found | 0 |
| Requirements defined | 63 |
| Requirements covered | 20 |
| **Coverage** | **31.7%** (20/63) |
| Coverage of CI-executable scope | 38.5% (20/52) |
| Tagged but unexecuted in CI | 3 |
| Orphan tags | 0 |
### By type
| Type | Covered | Tagged but unexecuted | Defined |
|---|---|---|---|
| AR | 9 | 0 | 27 |
| DP | 2 | 0 | 8 |
| IR | 6 | 0 | 8 |
| GR | 3 | 0 | 9 |
| VR | 0 | 3 | 11 |
- **UT** tags present (separate taxonomy, not counted in coverage): UT-001, UT-101, UT-102, UT-103, UT-104
- **PR** tags present (separate taxonomy, not counted in coverage): PR-002, PR-004
- **SR** tags present (separate taxonomy, not counted in coverage): SR-001, SR-002, SR-003, SR-005
## Not executable in CI
These requirements have no verification tier this repo's CI host can run, so a tag on them is evidence of *intent*, not of verification. They are never counted as covered.
| ID | Tiers | Tagged in source | Requirement |
|---|---|---|---|
| AR-027 | T4 | no | Throughput acceptable for **arbitrary** gallery size |
| VR-001 | out-of-ci | yes | HDF5 post-inference dump at the embedded-frame boundary |
| VR-002 | out-of-ci | yes | Replay drives the **real** KPN nodes, not a reimplementation |
| VR-003 | out-of-ci | yes | Scoring: micro-F1 against X-Ray, precision/recall logged at every eva… |
| VR-004 | out-of-ci | no | Reproducible validation corpus with ground truth |
| VR-005 | out-of-ci | no | Minimum face size study — TPI/FPI vs probe size, gallery held at nati… |
| VR-006 | out-of-ci | no | Re-tune `scene_threshold` once native-rate decode lands |
| VR-007 | out-of-ci | no | Expansion band, clustering threshold, and deferred-pass ablation |
| VR-008 | out-of-ci | no | Gallery scaling benchmark — throughput vs gallery size |
| VR-010 | out-of-ci | no | Dump provenance attributes — embedder model, detector settings, `dens… |
| VR-011 | out-of-ci | no | Rewrite the replay harness for the post-AR-012 output contract |
**Tagged but unexecuted:** VR-001, VR-002, VR-003 — a test exists and is tagged, but this CI host cannot run it. Report those runs separately.
## Orphan tags
A tag naming an ID `requirements.md` does not define. This is what renumbering produces, and what a typo produces.
_None._
## Requirements tracing up to nothing
A register row whose `Traces to` cell names no parent. Work serving no stated goal is how scope creeps in, and it is invisible unless something looks.
_None._
## Recorded exceptions
Deliberate, documented departures from an invariant (`EXCEPTION: XX-nnn <reason>`). Reported separately and never counted as coverage — an exception is a decision to be reviewed, not evidence a requirement is met.
_None._
## Register
| ID | Status | Tier | Traces to | Trace state | Tagged in | Requirement |
|---|---|---|---|---|---|---|
| AR-001 | Done | T3 | SR-002 | covered | `src/nodes/face_detector_node.hpp` | Detect faces in sampled frames; emit bbox, confidence, 5-point landma… |
| AR-002 | Planned | T2 | SR-002 | untagged | - | Minimum face size 66×66 px, expressed in **original** resolution (dec… |
| AR-003 | Planned | T1, T2, T4 | SR-002 | untagged | - | No fixed per-frame face cap — crowd scenes must not lose background c… |
| AR-004 | Planned | T1, T4 | SR-002 | untagged | - | Backpressure: unbounded faces/frame absorbed by slowing, never by dro… |
| AR-005 | Done | T1, T3 | SR-002 | covered | `src/face_utils.hpp` | Align to 112×112 via ArcFace 5-point similarity transform |
| AR-006 | Done | T3 | SR-002 | untagged | - | 512-d L2-normalised embeddings, batched |
| AR-007 | In Progress | T2 | SR-002 | untagged | - | Associate detections by IoU + embedding, with **frame-dependent** wei… |
| AR-008 | Planned | T2 | SR-002 | untagged | - | One track pool keyed on `last_seen`; no separate revival path |
| AR-009 | Done | T2 | SR-002 | untagged | - | Camera-cut detection (histogram) as an association hint |
| AR-010 | **Not started** — `… | T2 | SR-002 | untagged | - | Scene-boundary detection (TransNetV2) as an association hint |
| AR-011 | Planned | T1, T2 | SR-002 | untagged | - | **Every model is fed the input it was trained for** — cost reduced by… |
| AR-012 | Planned | T2 | **SR-002** | covered | `src/track_registry.hpp`, `tests/test_track_registry.cpp` | Presence follows **track extent**, not per-frame recognition |
| AR-013 | Planned | T2 | SR-002 | covered | `src/track_registry.hpp`, `tests/test_track_registry.cpp` | `last_seen` optional state machine; window ends at last sighting, nev… |
| AR-014 | Planned | T2 | SR-002 | covered | `src/track_registry.hpp`, `tests/test_track_registry.cpp` | Belief swap A→B terminates the track and starts a new one |
| AR-015 | Planned | T2 | SR-002 | covered | `src/track_registry.hpp`, `tests/test_track_registry.cpp` | Two live tracks owned by one actor ⇒ treat as a detected cut, re-asso… |
| AR-016 | Planned | T2 | SR-002 | covered | `src/track_registry.hpp`, `tests/test_track_registry.cpp` | All tracks closed at EOF — a film ends with faces on screen |
| AR-017 | Planned | T1, T2 | SR-002 | covered | `src/track_registry.hpp`, `tests/test_track_registry.cpp` | Every presence claim carries its belief and identification route |
| AR-018 | Planned | T1, T2 | SR-005 | untagged | - | Per-subject embedding store with banded admission (novel enough, safe… |
| AR-019 | In Progress | T2 | SR-005 | untagged | - | Per-film gallery annex from owned tracks; acquires the non-frontal vi… |
| AR-020 | Planned | T2 | SR-005 | untagged | - | Deferred re-identification of unknown tracks against the final expand… |
| AR-021 | Planned | T2 | SR-005 | untagged | - | Cluster unknown tracks into one entity per person, under temporal can… |
| AR-022 | Planned | T1, T2 | §4 | untagged | - | Capture still-unidentified tracks: embeddings, metadata, **context cr… |
| AR-023 | Done | T1 | SR-002 | covered | `src/gallery/gallery_calibration.hpp` | Fit sigmoid calibration from intra/inter similarity distributions |
| AR-024 | Planned | T1, static | SR-002 | untagged | - | **Always the calibrated probability, never a raw cosine** — exception… |
| AR-025 | Planned | T1 | SR-002 | untagged | - | Per-track Bayesian accumulation in log-odds, with correlated-observat… |
| AR-026 | In Progress | T1, T4 | SR-001 | untagged | - | All similarity computed as GEMM, including annex and deferred pass |
| AR-027 | Planned | T4 | SR-001 | untagged | - | Throughput acceptable for **arbitrary** gallery size |
| DP-001 | Done | T1, manual | PR-004 | covered | `src/main.cpp` | One analysis core; modes are front-ends and must not fork pipeline lo… |
| DP-002 | Done | T1, manual | PR-004 | covered | `src/main.cpp` | Batch CLI over one title |
| DP-003 | Planned | T1, manual | PR-004 | untagged | - | On-demand resident service with bounded, observable queue |
| DP-004 | Planned | T1, manual | PR-004 | untagged | - | Opportunistic/idle mode: external trigger, hard stop, implicit re-que… |
| DP-005 | Planned | T1, manual | PR-004 | untagged | - | Native installer, no Docker; Fedora + Arch |
| DP-006 | Planned | T1, manual | PR-003 | untagged | - | Background incremental gallery refresh on a timer |
| DP-007 | Planned | T1, manual | PR-004 | untagged | - | CI builder image, CPU-only, pinned by tag in the Gitea container regi… |
| DP-008 | Planned | T1, manual | PR-004 | untagged | - | Builder images + release jobs per backend (cpu / cuda / rocm); ship b… |
| IR-001 | Done | T1 | SR-003 | covered | `src/nodes/result_sink_node.hpp` | Emit the JRay truth format as sibling `.jray.json` |
| IR-002 | Planned | T1 | SR-003 | untagged | - | Windows carry belief + route; `extraction.*` carries `extinction_sec`… |
| IR-003 | Planned | T1 | SR-003 | untagged | - | Output written **after** the deferred pass, not at EOF |
| IR-004 | **Done** — `src/aud… | T1 | SR-003 | covered | `src/audio_signature.cpp`, `src/audio_signature.hpp`, `tests/test_audio_signature.cpp` | Compute the audio signature exactly per server spec §3 |
| IR-005 | **Done** — `tests/f… | T1 | SR-003 | covered | `src/audio_signature.cpp`, `src/audio_signature.hpp`, `tests/test_audio_signature.cpp` | Golden-vector fixture shared with the plugin repo to prove bit-exactn… |
| IR-006 | Done | T1, manual | SR-001 | covered | `scripts/run_from_jellyfin.py` | Jellyfin round-trip: pull pending queue, push complete results only |
| IR-007 | **Done** | T1 | SR-003 | covered | `src/audio_signature.cpp`, `src/audio_signature.hpp`, `tests/test_audio_signature.cpp` | Media < 120 s: emit no signature, apply no sync offset — identical ru… |
| IR-008 | **Done** | T1 | SR-003 | covered | `src/audio_signature.cpp`, `src/audio_signature.hpp`, `tests/test_audio_signature.cpp` | Emit and honour the signature's own `v1:` version prefix |
| GR-001 | Done | T1, T3 | SR-001, SR-005 | covered | `scripts/make_jellyfin_gallery.py` | Build gallery from Jellyfin library cast, TMDB profile fallback |
| GR-002 | Done | T1, T3 | PR-003 | covered | `scripts/make_jellyfin_gallery.py` | Incremental `--merge` refresh without re-embedding known actors |
| GR-003 | Planned | T1, T3 | SR-001 | untagged | - | Report coverage: zero-image actors, under-referenced actors, dedup, c… |
| GR-004 | **Done** — basename… | T1, T3 | SR-001 | covered | `scripts/filter_gallery.py`, `scripts/make_gallery.py`, `scripts/make_jellyfin_gallery.py`, `scripts/movienet_eval.py`, `scripts/optimizer/fetch_missing_actors.py`, `scripts/optimizer/optimize.py`, `scripts/optimizer/reembed_gallery.py`, `scripts/optimizer/replay.py`, `scripts/sae_embed_loader.py`, `scripts/sae_gallery.py`, `scripts/sae_stamp.py`, `scripts/stamp_gallery.py`, `src/config.hpp`, `src/gallery/embedder_stamp.cpp`, `src/gallery/embedder_stamp.hpp`, `src/gallery/gallery_builder.cpp`, `src/gallery/gallery_store.cpp`, `src/kpn_bindings.cpp`, `src/main.cpp`, `src/nodes/embedding_dump_node.hpp`, `src/scene_preview.cpp`, `src/types.hpp`, `tests/test_gallery_store.cpp` | Stamp embedder identity into the gallery; **hard startup error** on m… |
| GR-005 | Done | T1, T3 | **SR-005** | untagged | - | Gallery data never leaves the instance |
| GR-006 | Planned | T1 | SR-005 | untagged | - | Provenance tiers: baked / harvested / confirmed, distinguishable per … |
| GR-007 | Planned | T1 | SR-005 | untagged | - | Persist harvested embeddings **flagged and reviewable**, never silent… |
| GR-008 | Planned | T1 | SR-005 | untagged | - | Flag distributional outliers among an actor's references (poisoning g… |
| GR-009 | TBD | T1 | §4 | untagged | - | Human-confirmed associations persist and improve future extractions |
| VR-001 | Done | out-of-ci | PR-002 | tagged, unexecuted | `src/nodes/embedding_dump_node.hpp` | HDF5 post-inference dump at the embedded-frame boundary |
| VR-002 | Done | out-of-ci | PR-002 | tagged, unexecuted | `scripts/optimizer/replay.py` | Replay drives the **real** KPN nodes, not a reimplementation |
| VR-003 | Done | out-of-ci | PR-002 | tagged, unexecuted | `scripts/optimizer/second_score.py` | Scoring: micro-F1 against X-Ray, precision/recall logged at every eva… |
| VR-004 | Done | out-of-ci | PR-002 | untagged | - | Reproducible validation corpus with ground truth |
| VR-005 | Planned | out-of-ci | PR-002 | untagged | - | Minimum face size study — TPI/FPI vs probe size, gallery held at nati… |
| VR-006 | Planned | out-of-ci | PR-002 | untagged | - | Re-tune `scene_threshold` once native-rate decode lands |
| VR-007 | Planned | out-of-ci | PR-002 | untagged | - | Expansion band, clustering threshold, and deferred-pass ablation |
| VR-008 | Planned | out-of-ci | PR-002 | untagged | - | Gallery scaling benchmark — throughput vs gallery size |
| VR-009 | Planned | T1, out-of-ci | PR-002 | untagged | - | Verify accumulated posteriors are calibrated against held-out tracks |
| VR-010 | Planned | out-of-ci | PR-002 | untagged | - | Dump provenance attributes — embedder model, detector settings, `dens… |
| VR-011 | Planned | out-of-ci | PR-002 | untagged | - | Rewrite the replay harness for the post-AR-012 output contract |
## Detailed mapping
### AR-001
**Locations:** 1
- [`src/nodes/face_detector_node.hpp:2`](../src/nodes/face_detector_node.hpp#L2) — `Unknown`
### AR-005
**Locations:** 1
- [`src/face_utils.hpp:2`](../src/face_utils.hpp#L2) — `inline cv::Mat align_face(const cv::Mat& img,`
### AR-012
**Locations:** 2
- [`src/track_registry.hpp:2`](../src/track_registry.hpp#L2) — `Unknown`
- [`tests/test_track_registry.cpp:3`](../tests/test_track_registry.cpp#L3) — `Unknown`
### AR-013
**Locations:** 2
- [`src/track_registry.hpp:2`](../src/track_registry.hpp#L2) — `Unknown`
- [`tests/test_track_registry.cpp:3`](../tests/test_track_registry.cpp#L3) — `Unknown`
### AR-014
**Locations:** 2
- [`src/track_registry.hpp:2`](../src/track_registry.hpp#L2) — `Unknown`
- [`tests/test_track_registry.cpp:3`](../tests/test_track_registry.cpp#L3) — `Unknown`
### AR-015
**Locations:** 2
- [`src/track_registry.hpp:2`](../src/track_registry.hpp#L2) — `Unknown`
- [`tests/test_track_registry.cpp:3`](../tests/test_track_registry.cpp#L3) — `Unknown`
### AR-016
**Locations:** 2
- [`src/track_registry.hpp:2`](../src/track_registry.hpp#L2) — `Unknown`
- [`tests/test_track_registry.cpp:3`](../tests/test_track_registry.cpp#L3) — `Unknown`
### AR-017
**Locations:** 2
- [`src/track_registry.hpp:2`](../src/track_registry.hpp#L2) — `Unknown`
- [`tests/test_track_registry.cpp:3`](../tests/test_track_registry.cpp#L3) — `Unknown`
### AR-023
**Locations:** 1
- [`src/gallery/gallery_calibration.hpp:2`](../src/gallery/gallery_calibration.hpp#L2) — `Unknown`
### DP-001
**Locations:** 1
- [`src/main.cpp:3`](../src/main.cpp#L3) — `Unknown`
### DP-002
**Locations:** 1
- [`src/main.cpp:3`](../src/main.cpp#L3) — `Unknown`
### GR-001
**Locations:** 1
- [`scripts/make_jellyfin_gallery.py:4`](../scripts/make_jellyfin_gallery.py#L4) — `Unknown`
### GR-002
**Locations:** 1
- [`scripts/make_jellyfin_gallery.py:4`](../scripts/make_jellyfin_gallery.py#L4) — `Unknown`
### GR-004
**Locations:** 44
- [`src/config.hpp:43`](../src/config.hpp#L43) — `Unknown`
- [`src/gallery/embedder_stamp.cpp:1`](../src/gallery/embedder_stamp.cpp#L1) — `Unknown`
- [`src/gallery/embedder_stamp.hpp:2`](../src/gallery/embedder_stamp.hpp#L2) — `Unknown`
- [`src/gallery/gallery_builder.cpp:45`](../src/gallery/gallery_builder.cpp#L45) — `ActorGallery build_gallery(const BuildConfig& cfg)`
- [`src/gallery/gallery_store.cpp:82`](../src/gallery/gallery_store.cpp#L82) — `H5::StrType str(H5::PredType::C_S1, H5T_VARIABLE);`
- [`src/gallery/gallery_store.cpp:167`](../src/gallery/gallery_store.cpp#L167) — `H5::DataSpace scalar(H5S_SCALAR);`
- [`src/gallery/gallery_store.cpp:219`](../src/gallery/gallery_store.cpp#L219) — `Unknown`
- [`src/kpn_bindings.cpp:167`](../src/kpn_bindings.cpp#L167) — `Unknown`
- [`src/kpn_bindings.cpp:217`](../src/kpn_bindings.cpp#L217) — `Unknown`
- [`src/main.cpp:176`](../src/main.cpp#L176) — `Unknown`
- [`src/nodes/embedding_dump_node.hpp:30`](../src/nodes/embedding_dump_node.hpp#L30) — `static constexpr std::string_view label() { return "embedding_dump"; }`
- [`src/nodes/embedding_dump_node.hpp:102`](../src/nodes/embedding_dump_node.hpp#L102) — `H5::StrType str(H5::PredType::C_S1, H5T_VARIABLE);`
- [`src/scene_preview.cpp:133`](../src/scene_preview.cpp#L133) — `int main(int argc, char** argv)`
- [`src/types.hpp:141`](../src/types.hpp#L141) — `struct Actor`
- [`tests/test_gallery_store.cpp:182`](../tests/test_gallery_store.cpp#L182) — `TempFile tf("gallery_stamped.h5");`
- [`tests/test_gallery_store.cpp:201`](../tests/test_gallery_store.cpp#L201) — `TempFile tf("gallery_stamped.h5");`
- [`tests/test_gallery_store.cpp:219`](../tests/test_gallery_store.cpp#L219) — `TempFile tf("gallery_unstamped.h5");`
- [`tests/test_gallery_store.cpp:240`](../tests/test_gallery_store.cpp#L240) — `TempFile tf("gallery_json_stamp.json");`
- [`tests/test_gallery_store.cpp:252`](../tests/test_gallery_store.cpp#L252) — `Unknown`
- [`tests/test_gallery_store.cpp:268`](../tests/test_gallery_store.cpp#L268) — `Unknown`
- [`tests/test_gallery_store.cpp:300`](../tests/test_gallery_store.cpp#L300) — `Unknown`
- [`tests/test_gallery_store.cpp:309`](../tests/test_gallery_store.cpp#L309) — `Unknown`
- [`tests/test_gallery_store.cpp:333`](../tests/test_gallery_store.cpp#L333) — `Unknown`
- [`tests/test_gallery_store.cpp:348`](../tests/test_gallery_store.cpp#L348) — `Unknown`
- [`tests/test_gallery_store.cpp:367`](../tests/test_gallery_store.cpp#L367) — `Unknown`
- [`tests/test_gallery_store.cpp:384`](../tests/test_gallery_store.cpp#L384) — `TempFile tf("fake_model.onnx");`
- [`scripts/filter_gallery.py:80`](../scripts/filter_gallery.py#L80) — `if actor_jellyfin_id(a) in cast_ids]`
- [`scripts/make_gallery.py:181`](../scripts/make_gallery.py#L181) — `Unknown`
- [`scripts/make_jellyfin_gallery.py:448`](../scripts/make_jellyfin_gallery.py#L448) — `Unknown`
- [`scripts/make_jellyfin_gallery.py:456`](../scripts/make_jellyfin_gallery.py#L456) — `Unknown`
- [`scripts/movienet_eval.py:65`](../scripts/movienet_eval.py#L65) — `with open(args.gt) as f:`
- [`scripts/optimizer/fetch_missing_actors.py:62`](../scripts/optimizer/fetch_missing_actors.py#L62) — `def fetch(missing_path, out_path, token, build_dir, models_dir, arcface,`
- [`scripts/optimizer/fetch_missing_actors.py:109`](../scripts/optimizer/fetch_missing_actors.py#L109) — `def merge(base_path, add_path, out_path):`
- [`scripts/optimizer/fetch_missing_actors.py:123`](../scripts/optimizer/fetch_missing_actors.py#L123) — `def merge(base_path, add_path, out_path):`
- [`scripts/optimizer/optimize.py:186`](../scripts/optimizer/optimize.py#L186) — `Unknown`
- [`scripts/optimizer/optimize.py:202`](../scripts/optimizer/optimize.py#L202) — `if not Path(f["dump"]).exists():`
- [`scripts/optimizer/reembed_gallery.py:62`](../scripts/optimizer/reembed_gallery.py#L62) — `for i, a in enumerate(ref["actors"], 1):`
- [`scripts/optimizer/replay.py:113`](../scripts/optimizer/replay.py#L113) — `Unknown`
- [`scripts/optimizer/replay.py:252`](../scripts/optimizer/replay.py#L252) — `Unknown`
- [`scripts/sae_embed_loader.py:22`](../scripts/sae_embed_loader.py#L22) — `return arcface if arcface else str(Path(models_dir) / DEFAULT_ARCFACE)`
- [`scripts/sae_gallery.py:171`](../scripts/sae_gallery.py#L171) — `if not _stamp_empty(embedder):`
- [`scripts/sae_gallery.py:199`](../scripts/sae_gallery.py#L199) — `for a in range(len(offset)):`
- [`scripts/sae_stamp.py:3`](../scripts/sae_stamp.py#L3) — `Unknown`
- [`scripts/stamp_gallery.py:4`](../scripts/stamp_gallery.py#L4) — `Unknown`
### IR-001
**Locations:** 1
- [`src/nodes/result_sink_node.hpp:2`](../src/nodes/result_sink_node.hpp#L2) — `Unknown`
### IR-004
**Locations:** 16
- [`src/audio_signature.cpp:3`](../src/audio_signature.cpp#L3) — `Unknown`
- [`src/audio_signature.cpp:265`](../src/audio_signature.cpp#L265) — `std::vector<std::uint8_t> pack_frames(const std::vector<float>& mono)`
- [`src/audio_signature.cpp:320`](../src/audio_signature.cpp#L320) — `std::optional<std::string> signature_from_mono(const std::vector<float>& mono)`
- [`src/audio_signature.cpp:327`](../src/audio_signature.cpp#L327) — `std::optional<std::vector<float>> decode_centre_window(const std::string& path)`
- [`src/audio_signature.cpp:421`](../src/audio_signature.cpp#L421) — `std::optional<std::string> compute_signature(const std::string& path)`
- [`src/audio_signature.hpp:4`](../src/audio_signature.hpp#L4) — `Unknown`
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:129`](../tests/test_audio_signature.cpp#L129) — `Unknown`
- [`tests/test_audio_signature.cpp:151`](../tests/test_audio_signature.cpp#L151) — `Unknown`
- [`tests/test_audio_signature.cpp:167`](../tests/test_audio_signature.cpp#L167) — `Unknown`
- [`tests/test_audio_signature.cpp:236`](../tests/test_audio_signature.cpp#L236) — `Unknown`
- [`tests/test_audio_signature.cpp:263`](../tests/test_audio_signature.cpp#L263) — `TempWav w("centred300");`
- [`tests/test_audio_signature.cpp:301`](../tests/test_audio_signature.cpp#L301) — `Unknown`
- [`tests/test_audio_signature.cpp:314`](../tests/test_audio_signature.cpp#L314) — `kNumBands * std::log10(1000.0 / kBandLoHz) / std::log10(kBandHiHz / kBandLoHz)));`
- [`tests/test_audio_signature.cpp:328`](../tests/test_audio_signature.cpp#L328) — `std::vector<float> a(kWindowSamples / 50);`
- [`tests/test_audio_signature.cpp:344`](../tests/test_audio_signature.cpp#L344) — `return base64_encode(reinterpret_cast<const std::uint8_t*>(s.data()), s.size());`
### IR-005
**Locations:** 5
- [`src/audio_signature.cpp:421`](../src/audio_signature.cpp#L421) — `std::optional<std::string> compute_signature(const std::string& path)`
- [`src/audio_signature.hpp:4`](../src/audio_signature.hpp#L4) — `Unknown`
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:129`](../tests/test_audio_signature.cpp#L129) — `Unknown`
- [`tests/test_audio_signature.cpp:138`](../tests/test_audio_signature.cpp#L138) — `Unknown`
### IR-006
**Locations:** 1
- [`scripts/run_from_jellyfin.py:4`](../scripts/run_from_jellyfin.py#L4) — `Unknown`
### IR-007
**Locations:** 8
- [`src/audio_signature.cpp:3`](../src/audio_signature.cpp#L3) — `Unknown`
- [`src/audio_signature.cpp:327`](../src/audio_signature.cpp#L327) — `std::optional<std::vector<float>> decode_centre_window(const std::string& path)`
- [`src/audio_signature.cpp:421`](../src/audio_signature.cpp#L421) — `std::optional<std::string> compute_signature(const std::string& path)`
- [`src/audio_signature.hpp:4`](../src/audio_signature.hpp#L4) — `Unknown`
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:201`](../tests/test_audio_signature.cpp#L201) — `TempWav w("short30");`
- [`tests/test_audio_signature.cpp:219`](../tests/test_audio_signature.cpp#L219) — `TempWav w("exact120");`
- [`tests/test_audio_signature.cpp:229`](../tests/test_audio_signature.cpp#L229) — `TempWav w("exact120");`
### IR-008
**Locations:** 7
- [`src/audio_signature.cpp:3`](../src/audio_signature.cpp#L3) — `Unknown`
- [`src/audio_signature.cpp:320`](../src/audio_signature.cpp#L320) — `std::optional<std::string> signature_from_mono(const std::vector<float>& mono)`
- [`src/audio_signature.cpp:421`](../src/audio_signature.cpp#L421) — `std::optional<std::string> compute_signature(const std::string& path)`
- [`src/audio_signature.hpp:4`](../src/audio_signature.hpp#L4) — `Unknown`
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:129`](../tests/test_audio_signature.cpp#L129) — `Unknown`
- [`tests/test_audio_signature.cpp:167`](../tests/test_audio_signature.cpp#L167) — `Unknown`
### PR-002
**Locations:** 3
- [`src/nodes/embedding_dump_node.hpp:2`](../src/nodes/embedding_dump_node.hpp#L2) — `Unknown`
- [`scripts/optimizer/replay.py:5`](../scripts/optimizer/replay.py#L5) — `Reads an embedding dump (scripts/optimizer/SCHEMA.md), feeds each frame as an`
- [`scripts/optimizer/second_score.py:5`](../scripts/optimizer/second_score.py#L5) — `Unknown`
### PR-004
**Locations:** 1
- [`src/main.cpp:3`](../src/main.cpp#L3) — `Unknown`
### SR-001
**Locations:** 46
- [`src/config.hpp:43`](../src/config.hpp#L43) — `Unknown`
- [`src/gallery/embedder_stamp.cpp:1`](../src/gallery/embedder_stamp.cpp#L1) — `Unknown`
- [`src/gallery/embedder_stamp.hpp:2`](../src/gallery/embedder_stamp.hpp#L2) — `Unknown`
- [`src/gallery/gallery_builder.cpp:45`](../src/gallery/gallery_builder.cpp#L45) — `ActorGallery build_gallery(const BuildConfig& cfg)`
- [`src/gallery/gallery_store.cpp:82`](../src/gallery/gallery_store.cpp#L82) — `H5::StrType str(H5::PredType::C_S1, H5T_VARIABLE);`
- [`src/gallery/gallery_store.cpp:167`](../src/gallery/gallery_store.cpp#L167) — `H5::DataSpace scalar(H5S_SCALAR);`
- [`src/gallery/gallery_store.cpp:219`](../src/gallery/gallery_store.cpp#L219) — `Unknown`
- [`src/kpn_bindings.cpp:167`](../src/kpn_bindings.cpp#L167) — `Unknown`
- [`src/kpn_bindings.cpp:217`](../src/kpn_bindings.cpp#L217) — `Unknown`
- [`src/main.cpp:176`](../src/main.cpp#L176) — `Unknown`
- [`src/nodes/embedding_dump_node.hpp:30`](../src/nodes/embedding_dump_node.hpp#L30) — `static constexpr std::string_view label() { return "embedding_dump"; }`
- [`src/nodes/embedding_dump_node.hpp:102`](../src/nodes/embedding_dump_node.hpp#L102) — `H5::StrType str(H5::PredType::C_S1, H5T_VARIABLE);`
- [`src/scene_preview.cpp:133`](../src/scene_preview.cpp#L133) — `int main(int argc, char** argv)`
- [`src/types.hpp:141`](../src/types.hpp#L141) — `struct Actor`
- [`tests/test_gallery_store.cpp:182`](../tests/test_gallery_store.cpp#L182) — `TempFile tf("gallery_stamped.h5");`
- [`tests/test_gallery_store.cpp:201`](../tests/test_gallery_store.cpp#L201) — `TempFile tf("gallery_stamped.h5");`
- [`tests/test_gallery_store.cpp:219`](../tests/test_gallery_store.cpp#L219) — `TempFile tf("gallery_unstamped.h5");`
- [`tests/test_gallery_store.cpp:240`](../tests/test_gallery_store.cpp#L240) — `TempFile tf("gallery_json_stamp.json");`
- [`tests/test_gallery_store.cpp:252`](../tests/test_gallery_store.cpp#L252) — `Unknown`
- [`tests/test_gallery_store.cpp:268`](../tests/test_gallery_store.cpp#L268) — `Unknown`
- [`tests/test_gallery_store.cpp:300`](../tests/test_gallery_store.cpp#L300) — `Unknown`
- [`tests/test_gallery_store.cpp:309`](../tests/test_gallery_store.cpp#L309) — `Unknown`
- [`tests/test_gallery_store.cpp:333`](../tests/test_gallery_store.cpp#L333) — `Unknown`
- [`tests/test_gallery_store.cpp:348`](../tests/test_gallery_store.cpp#L348) — `Unknown`
- [`tests/test_gallery_store.cpp:367`](../tests/test_gallery_store.cpp#L367) — `Unknown`
- [`tests/test_gallery_store.cpp:384`](../tests/test_gallery_store.cpp#L384) — `TempFile tf("fake_model.onnx");`
- [`scripts/filter_gallery.py:80`](../scripts/filter_gallery.py#L80) — `if actor_jellyfin_id(a) in cast_ids]`
- [`scripts/make_gallery.py:181`](../scripts/make_gallery.py#L181) — `Unknown`
- [`scripts/make_jellyfin_gallery.py:4`](../scripts/make_jellyfin_gallery.py#L4) — `Unknown`
- [`scripts/make_jellyfin_gallery.py:448`](../scripts/make_jellyfin_gallery.py#L448) — `Unknown`
- [`scripts/make_jellyfin_gallery.py:456`](../scripts/make_jellyfin_gallery.py#L456) — `Unknown`
- [`scripts/movienet_eval.py:65`](../scripts/movienet_eval.py#L65) — `with open(args.gt) as f:`
- [`scripts/optimizer/fetch_missing_actors.py:62`](../scripts/optimizer/fetch_missing_actors.py#L62) — `def fetch(missing_path, out_path, token, build_dir, models_dir, arcface,`
- [`scripts/optimizer/fetch_missing_actors.py:109`](../scripts/optimizer/fetch_missing_actors.py#L109) — `def merge(base_path, add_path, out_path):`
- [`scripts/optimizer/fetch_missing_actors.py:123`](../scripts/optimizer/fetch_missing_actors.py#L123) — `def merge(base_path, add_path, out_path):`
- [`scripts/optimizer/optimize.py:186`](../scripts/optimizer/optimize.py#L186) — `Unknown`
- [`scripts/optimizer/optimize.py:202`](../scripts/optimizer/optimize.py#L202) — `if not Path(f["dump"]).exists():`
- [`scripts/optimizer/reembed_gallery.py:62`](../scripts/optimizer/reembed_gallery.py#L62) — `for i, a in enumerate(ref["actors"], 1):`
- [`scripts/optimizer/replay.py:113`](../scripts/optimizer/replay.py#L113) — `Unknown`
- [`scripts/optimizer/replay.py:252`](../scripts/optimizer/replay.py#L252) — `Unknown`
- [`scripts/run_from_jellyfin.py:4`](../scripts/run_from_jellyfin.py#L4) — `Unknown`
- [`scripts/sae_embed_loader.py:22`](../scripts/sae_embed_loader.py#L22) — `return arcface if arcface else str(Path(models_dir) / DEFAULT_ARCFACE)`
- [`scripts/sae_gallery.py:171`](../scripts/sae_gallery.py#L171) — `if not _stamp_empty(embedder):`
- [`scripts/sae_gallery.py:199`](../scripts/sae_gallery.py#L199) — `for a in range(len(offset)):`
- [`scripts/sae_stamp.py:3`](../scripts/sae_stamp.py#L3) — `Unknown`
- [`scripts/stamp_gallery.py:4`](../scripts/stamp_gallery.py#L4) — `Unknown`
### SR-002
**Locations:** 4
- [`src/face_utils.hpp:2`](../src/face_utils.hpp#L2) — `inline cv::Mat align_face(const cv::Mat& img,`
- [`src/gallery/gallery_calibration.hpp:2`](../src/gallery/gallery_calibration.hpp#L2) — `Unknown`
- [`src/nodes/face_detector_node.hpp:2`](../src/nodes/face_detector_node.hpp#L2) — `Unknown`
- [`src/track_registry.hpp:2`](../src/track_registry.hpp#L2) — `Unknown`
### SR-003
**Locations:** 3
- [`src/audio_signature.cpp:3`](../src/audio_signature.cpp#L3) — `Unknown`
- [`src/audio_signature.hpp:4`](../src/audio_signature.hpp#L4) — `Unknown`
- [`src/nodes/result_sink_node.hpp:2`](../src/nodes/result_sink_node.hpp#L2) — `Unknown`
### SR-005
**Locations:** 1
- [`scripts/make_jellyfin_gallery.py:4`](../scripts/make_jellyfin_gallery.py#L4) — `Unknown`
### UT-001
**Locations:** 1
- [`tests/test_track_registry.cpp:3`](../tests/test_track_registry.cpp#L3) — `Unknown`
### UT-101
**Locations:** 5
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:129`](../tests/test_audio_signature.cpp#L129) — `Unknown`
- [`tests/test_audio_signature.cpp:138`](../tests/test_audio_signature.cpp#L138) — `Unknown`
- [`tests/test_audio_signature.cpp:151`](../tests/test_audio_signature.cpp#L151) — `Unknown`
- [`tests/test_audio_signature.cpp:167`](../tests/test_audio_signature.cpp#L167) — `Unknown`
### UT-102
**Locations:** 5
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:201`](../tests/test_audio_signature.cpp#L201) — `TempWav w("short30");`
- [`tests/test_audio_signature.cpp:219`](../tests/test_audio_signature.cpp#L219) — `TempWav w("exact120");`
- [`tests/test_audio_signature.cpp:229`](../tests/test_audio_signature.cpp#L229) — `TempWav w("exact120");`
- [`tests/test_audio_signature.cpp:236`](../tests/test_audio_signature.cpp#L236) — `Unknown`
### UT-103
**Locations:** 2
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:263`](../tests/test_audio_signature.cpp#L263) — `TempWav w("centred300");`
### UT-104
**Locations:** 5
- [`tests/test_audio_signature.cpp:3`](../tests/test_audio_signature.cpp#L3) — `Unknown`
- [`tests/test_audio_signature.cpp:301`](../tests/test_audio_signature.cpp#L301) — `Unknown`
- [`tests/test_audio_signature.cpp:314`](../tests/test_audio_signature.cpp#L314) — `kNumBands * std::log10(1000.0 / kBandLoHz) / std::log10(kBandHiHz / kBandLoHz)));`
- [`tests/test_audio_signature.cpp:328`](../tests/test_audio_signature.cpp#L328) — `std::vector<float> a(kWindowSamples / 50);`
- [`tests/test_audio_signature.cpp:344`](../tests/test_audio_signature.cpp#L344) — `return base64_encode(reinterpret_cast<const std::uint8_t*>(s.data()), s.size());`
### VR-001
**Locations:** 1
- [`src/nodes/embedding_dump_node.hpp:2`](../src/nodes/embedding_dump_node.hpp#L2) — `Unknown`
### VR-002
**Locations:** 1
- [`scripts/optimizer/replay.py:5`](../scripts/optimizer/replay.py#L5) — `Reads an embedding dump (scripts/optimizer/SCHEMA.md), feeds each frame as an`
### VR-003
**Locations:** 1
- [`scripts/optimizer/second_score.py:5`](../scripts/optimizer/second_score.py#L5) — `Unknown`
## Tag diagnostics
**Malformed tags:**
- `scripts/filter_gallery.py:80` — {'ignored': ['— a filtered gallery holds the SAME vectors as its']}
- `scripts/make_gallery.py:181` — {'ignored': ['— stamp with the model actually loaded', 'resolved']}
- `scripts/make_jellyfin_gallery.py:456` — {'ignored': ["— --merge keeps the existing actors' vectors and"]}
- `scripts/movienet_eval.py:65` — {'ignored': ['— match() below is a bare dot product against the']}
- `scripts/optimizer/fetch_missing_actors.py:109` — {'ignored': ['— the legacy JSON gallery carries the same stamp as']}
- `scripts/optimizer/fetch_missing_actors.py:123` — {'ignored': ['— merging two galleries from different models makes']}
- `scripts/optimizer/optimize.py:202` — {'ignored': ['— every (dump', 'gallery) pair is checked ONCE here']}
- `scripts/optimizer/reembed_gallery.py:62` — {'ignored': ['— this script exists to produce a gallery in a']}
- `scripts/optimizer/replay.py:113` — {'ignored': ['— checked here', 'before any network is built', 'so a']}
- `scripts/optimizer/replay.py:252` — {'ignored': ['— promote an unprovable gallery/dump binding from a']}
- `scripts/sae_embed_loader.py:22` — {'ignored': ['— single source of truth for "which model is this"']}
- `scripts/sae_gallery.py:171` — {'ignored': ['— omitted entirely when unknown', 'so "unstamped"']}
- `scripts/sae_gallery.py:199` — {'ignored': ['— carried through so a derived gallery (filter']}
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