diff --git a/notes/current-system-map.md b/notes/current-system-map.md
index 24c753d..b37baf3 100644
--- a/notes/current-system-map.md
+++ b/notes/current-system-map.md
@@ -1,6 +1,9 @@
 # Current System Map
 
 Source-level code ownership is mapped in `docs/code-algorithm-map.md`.
+The indexed problem-domain map is `docs/perfect-machine-domain-index.md`; the
+current architecture/optimization/sample-code study lives under
+`research/perfect-machine-study-2026-05-23/`.
 
 Mimir is the public Face and product name for this repo. A few lower native ABI
 names still use `localcast` until a deliberate rename cut exists.
diff --git a/notes/fresh-workspace-handoff.md b/notes/fresh-workspace-handoff.md
index 7ff8bf6..0d0d77b 100644
--- a/notes/fresh-workspace-handoff.md
+++ b/notes/fresh-workspace-handoff.md
@@ -28,6 +28,11 @@ Get-Content .\state\evidence.jsonl -Tail 8
 - `src/Mimir.Runtime` owns `MimirSynchronizationHub`, configurable five-second
   rolling buffers, stream descriptors, source adapters, direct native ingest,
   audio chirplet delay estimation, and the video capture driver seam.
+- `docs/code-algorithm-map.md` and `docs/perfect-machine-domain-index.md` are
+  the fastest re-entry maps for source ownership and problem-domain cuts.
+- `research/perfect-machine-study-2026-05-23/` contains the architecture
+  rumination, optimization ledger, references, and sample code sketches for the
+  next decoder/DSP/native-ring implementation passes.
 - Local six-camera ingest should use direct driver adapters. Process-backed
   sources are bridge/network edges only.
 - Leap stereo IR is the first timing-camera candidate for direct ingest.
diff --git a/state/evidence.jsonl b/state/evidence.jsonl
index 31e7afc..41af7a7 100644
--- a/state/evidence.jsonl
+++ b/state/evidence.jsonl
@@ -81,3 +81,4 @@
 {"ts": "2026-05-23T23:10:00+01:00", "type": "verification", "status": "partial", "note": "Live chirp-only physical Scarlett run on 2026-05-23 emitted through the Focusrite output path and captured 4 ASIO inputs at 192 kHz. Runtime app telemetry locked Loopback 1->Loopback 2 (asio-ch2->asio-ch3) with 13-14 matched chirp-bin events and confidence 1.000. Physical mic input asio-ch1 heard enough energy to calibrate 145 frames / 64 anchors over the 20s capture, with 6 reliable symbols and delay hypotheses around 2,748 samples, but the current pairwise analyzer still failed to produce a timing report in a 2s window. asio-ch0 produced usable band energy but zero anchors. Persisted calibration/chirp-bin/scarlett-live-20260523-230642.json; raw capture remains ignored under artifacts/."}
 {"ts": "2026-05-23T23:19:38+01:00", "type": "verification", "status": "partial", "note": "After raising physical mic gain, reran live chirp-only ASIO and a 20s Scarlett calibration capture on 2026-05-23. Runtime still locked digital loopback asio-ch2->asio-ch3 at confidence 1.000 with 13-14 matched events. Physical mic asio-ch1 improved in the long capture from 64 to 74 anchors and clock confidence from 0.806 to 0.879, with 5 reliable symbols and delay hypotheses around 2682-2692 samples. The current 2s calibrated pairwise analyzer still failed to report asio-ch1 because short slices often decode 0-4 candidate anchors with no matched triplet path. asio-ch0 remains energy-only with zero anchors. Persisted calibration/chirp-bin/scarlett-hotmic-20260523-231637.json."}
 {"ts": "2026-05-23T23:30:55+01:00", "type": "decision", "status": "ok", "note": "Added source-level code algorithm map and linked Perfect Machine hypotheses research note."}
+{"ts": "2026-05-23T23:45:11+01:00", "type": "decision", "status": "ok", "note": "Added Perfect Machine domain index plus 2026-05-23 architecture/optimization/reference study and sample implementation sketches for decoder, SIMD/GPU scoring, actuator, and native rings."}
diff --git a/state/map.yaml b/state/map.yaml
index 49c12eb..0d59da2 100644
--- a/state/map.yaml
+++ b/state/map.yaml
@@ -164,6 +164,12 @@ accepted_design:
     reservoir views, and runtime policy.
   - `docs/code-algorithm-map.md` is the source-level ownership and algorithm map
     for the current repo code surface.
+  - `docs/perfect-machine-domain-index.md` indexes Mimir's full problem domain,
+    current evidence taxonomy, hot paths, and implementation cuts.
+  - `research/perfect-machine-study-2026-05-23/` preserves the architecture
+    rumination, optimization ledger, research references, and sample code
+    sketches for streaming chirp-bin decode, AVX2/GPU scoring, fractional-delay
+    actuation, and native capture rings.
   - `.voidbot` state is part of repo memory and must be committed separately
     whenever dirty.