Based on the tool results, I successfully extracted the text from the `.docx` file. Here's my analysis prepended to the original content:

---

## Concise Analysis — SFQ Architecture Report

**Document Type**: Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays
**Target Application**: Photonic quantum computing (8-pixel "superpixel" groups, timing-only readout)
**Confidence**: Verified (extracted directly from source file)

### Key Architectural Decisions
| Decision | Rationale | Risk Level |
|----------|-----------|------------|
| **No per-pixel identity** | Timing-only requirement simplifies design dramatically | Low (explicit assumption) |
| **Binary merger tree (8→1)** | Asynchronous OR function with ~30-50 ps total delay | Low |
| **No on-chip clock/TDC** | Room-temperature TDC handles timestamping; saves ~1000s of JJs | Low |
| **SFQ/DC output per block** | One coax cable per block; scales to ~50-100 blocks | Medium (cable count) |
| **No on-chip counter (Gen 1)** | Multiplicity deferred to warm electronics or A2 upgrade | Low |

### Critical Numbers
- **JJ count per block**: ~30-50 Josephson junctions
- **Timing budget**: ~15-45 ps RSS (within 50 ps target)
- **Merger dead time**: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)
- **Propagation delay**: ~30-50 ps through 3-stage binary tree

### Dominant Risks (in order)
1. **Bias margin collapse** — mitigated by operating at ~70% Ic, monitoring
2. **Routing skew** — requires symmetric layout, <5 ps target
3. **Output driver reliability** — DFQ stack >2 mV demonstrated
4. **Pulse collision loss** — negligible at expected rates
5. **Fabrication yield** — independent blocks allow partial-chip operation

### Validation Stages Defined
1. Single-block electrical test (no detectors)
2. Single-block with SNSPDs
3. Multi-block chip (4-8 blocks)
4. System integration with photonic quantum computer

### Bottom Line
This is a **well-reasoned minimalist architecture** (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-identity-irrelevant + timing-only + low-rate = simple merger tree is optimal. The staged validation plan and risk mitigations are appropriate for a first-generation cryogenic readout IC.

---

## Original Document Content

`
 per-pixel identification is needed. This is the single most important assumption. If it changes, the architecture must change.
7. Design Guidance for Next Step
The following provides block-level decomposition for Architecture A1 without specifying circuit-level designs.
7.1 Front-End Interface
Each of the 8 SNSPDs connects to a magnetically-coupled DC/SFQ (MC-DC/SFQ) converter. This converter should be tuned to trigger at the SNSPD output current level (~10-20 microamps for NbTiN SNSPDs). The mutual inductance M should be chosen so that the switching threshold corresponds to a reliable photon detection signal. Terai et al. (2012) demonstrated this with 37 ps jitter. The 8 converters should share a common bias supply with independent trimming if needed.
7.2 Merge Stage
A binary tree of 7 two-input SFQ mergers (confluence buffers). Three stages: 4 mergers in stage 1, 2 in stage 2, 1 in stage 3. JTL segments between stages for impedance matching and signal restoration. Total propagation delay through the tree: approximately 30-50 ps. Path-length matching from each of the 8 inputs to the tree output should be equalized to within 5-10 ps to avoid systematic timing bias. This is a layout constraint, not a logic constraint - it requires symmetric routing of the JTL interconnects.
7.3 Timing Reference Strategy
No on-chip timing reference. The merged output pulse is the timing datum. The room-temperature TDC measures the arrival time of this pulse relative to a global clock (typically the photonic circuit's pump laser repetition rate or an external reference oscillator). The timing budget is: SNSPD intrinsic jitter (~10-40 ps) + SFQ conversion jitter (~5-10 ps) + merger chain jitter (~3-5 ps) + cable/driver jitter (~5-10 ps) = ~15-45 ps RSS, within the 50 ps target.
7.4 Optional Count/Multiplicity Path
Not included in the first generation. If needed, a 3-bit TFF counter at the merger output (Architecture A2 upgrade) adds ~20-30 JJ. The counter accumulates hits during a window defined by an external gate signal. The counter value can be read out via DFQ stack amplitude encoding (producing a voltage proportional to the count) or via a slow serial readout. This is a straightforward second-generation addition.
7.5 Output Link Strategy
The merged SFQ pulse is amplified by a DFQ (double-flux-quantum) amplifier stack or SFQ/DC converter to produce a voltage pulse of ~2-5 mV amplitude with ~400 ps rise time. This is transmitted on a single coaxial cable to room temperature. For a chip with N blocks, N output coaxial cables are needed. At the expected channel counts (tens of blocks), this is manageable within typical cryostat wiring budgets. If cable count becomes limiting, a shared serializer could multiplex multiple block outputs onto fewer cables, but this adds complexity and should be deferred to a later generation.
7.6 Calibration Strategy
Calibration consists of: (1) Setting DC bias currents for all JJs to the optimal operating point (~70% of Ic). This is a one-time calibration per cooldown, adjustable via room-temperature current sources. (2) Verifying each block responds to test pulses. The MC-DC/SFQ converters can be triggered by injecting test currents through the SNSPD bias lines. (3) Measuring the propagation delay through each block relative to a common reference to establish inter-block timing offsets. This is a one-time characterization, stable as long as the cryogenic temperature is stable.
7.7 Room-Temperature Decoding
The room-temperature electronics receive one pulse per photon detection event per block. The pulse is discriminated by a comparator and timestamped by a TDC. The TDC provides a digital timestamp for each event. Event correlation, coincidence detection, and any statistical analysis are performed in software on the warm side. The warm electronics also provide the bias currents for all SFQ circuits and monitor the health of each block.
8. Risks and Validation Plan
8.1 Technical Risks
Risk 1: Pulse collision and multi-hit loss
If two or more SNSPDs in the same 8-pixel group fire within the merger dead time (~10-20 ps), only one output pulse is produced. At low event rates this is negligible, but at high rates or with correlated photon arrivals, it causes systematic undercounting.
Mitigation: At expected event rates (< 10 MHz per block), the probability of two detectors firing within 20 ps is extremely small (< 1e-4 per event window even at 100 MHz). Monitor for rate-dependent anomalies. If needed, upgrade to A2 with counter.
Risk 2: Routing skew
Unequal path lengths from the 8 MC-DC/SFQ converters to the merger tree output cause systematic timing offsets between channels. Since pixel identity is not tracked, this manifests as additional timing jitter on the merged output.
Mitigation: Symmetric tree layout with matched JTL path lengths. Target < 5 ps skew. This is a layout discipline issue, not a fundamental limitation. Characterize skew with per-channel test pulses during calibration.
Risk 3: Output driver reliability
The SFQ/DC driver or DFQ amplifier must reliably produce a voltage pulse large enough to survive cable attenuation and noise on the path to room temperature. Insufficient output amplitude causes missed events or degraded timing.
Mitigation: DFQ amplifier stacks producing > 2 mV have been demonstrated. Use a multi-stage DFQ stack if needed. Monitor output pulse height and adjust bias currents.
Risk 4: Fabrication yield
With ~30-50 JJ per block and tens of blocks per chip, total JJ count reaches 1000-5000. At typical RSFQ fabrication yields (> 99% per JJ for mature processes), block-level yield should be high, but systematic defects could disable blocks.
Mitigation: Design for redundancy if possible. Test each block independently. The small per-block JJ count and independent block architecture make partial-chip operation feasible.
Risk 5: Bias margin collapse in dense tiling
Dense tiling of many blocks on one chip requires careful management of DC bias current distribution. Return currents and magnetic field from bias lines can shift operating points of nearby blocks.
Mitigation: Use ERSFQ-style superconducting bias distribution if available. Shield bias lines. Maintain generous inter-block spacing in first generation.
8.2 Staged Validation Sequence
Stage 1: Single-block electrical test (no detectors)
Fabricate one merger block with 8 DC/SFQ converter inputs.
Inject electrical test pulses through the converter inputs.
Verify merged output pulse at room temperature via coaxial cable.
Measure propagation delay, jitter, and bias margins.
Characterize merger dead time and multi-hit behavior by injecting simultaneous pulses on multiple inputs.
Stage 2: Single-block with SNSPDs
Wire-bond or flip-chip the merger block to an 8-pixel SNSPD array.
Illuminate with attenuated laser (single-photon level).
Measure system timing jitter end-to-end.
Verify detection efficiency is

Native identity and behavior

Generic smoke/native worker profile

Native tool use contract

Persistent-chat prompt port placeholder

MCP proxy capability index

Agent skill lifecycle placeholder

Pinned state

Decision state

Curated memory

Session packet candidate

Session-start/restore packet candidate

Current task

Longer-term ideas / experiments

Runtime hints and notices

Operational notices

Recent failures

Persistent context manifest health

Native scoped grants

Provider capability probes

Native session summary

Native hot tail

Bounded keyword retrieval

Vector search / RAG placeholder

Turn packet candidate

Matrix attachment/reply/batch context candidate

Native skill: prompt-governance

Current Matrix event context

Output:
Based on the tool results, I successfully extracted the text from the `.docx` file. Here's my analysis prepended to the original content:

---

## Concise Analysis — SFQ Architecture Report

**Document Type**: Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays
**Target Application**: Photonic quantum computing (8-pixel "superpixel" groups, timing-only readout)
**Confidence**: Verified (extracted directly from source file)

### Key Architectural Decisions
| Decision | Rationale | Risk Level |
|----------|-----------|------------|
| **No per-pixel identity** | Timing-only requirement simplifies design dramatically | Low (explicit assumption) |
| **Binary merger tree (8→1)** | Asynchronous OR function with ~30-50 ps total delay | Low |
| **No on-chip clock/TDC** | Room-temperature TDC handles timestamping; saves ~1000s of JJs | Low |
| **SFQ/DC output per block** | One coax cable per block; scales to ~50-100 blocks | Medium (cable count) |
| **No on-chip counter (Gen 1)** | Multiplicity deferred to warm electronics or A2 upgrade | Low |

### Critical Numbers
- **JJ count per block**: ~30-50 Josephson junctions
- **Timing budget**: ~15-45 ps RSS (within 50 ps target)
- **Merger dead time**: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)
- **Propagation delay**: ~30-50 ps through 3-stage binary tree

### Dominant Risks (in order)
1. **Bias margin collapse** — mitigated by operating at ~70% Ic, monitoring
2. **Routing skew** — requires symmetric layout, <5 ps target
3. **Output driver reliability** — DFQ stack >2 mV demonstrated
4. **Pulse collision loss** — negligible at expected rates
5. **Fabrication yield** — independent blocks allow partial-chip operation

### Validation Stages Defined
1. Single-block electrical test (no detectors)
2. Single-block with SNSPDs
3. Multi-block chip (4-8 blocks)
4. System integration with photonic quantum computer

### Bottom Line
This is a **well-reasoned minimalist architecture** (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-identity-irrelevant + timing-only + low-rate = simple merger tree is optimal. The staged validation plan and risk mitigations are appropriate for a first-generation cryogenic readout IC.

---

## Original Document Content

`
 per-pixel identification is needed. This is the single most important assumption. If it changes, the architecture must change.
7. Design Guidance for Next Step
The following provides block-level decomposition for Architecture A1 without specifying circuit-level designs.
7.1 Front-End Interface
Each of the 8 SNSPDs connects to a magnetically-coupled DC/SFQ (MC-DC/SFQ) converter. This converter should be tuned to trigger at the SNSPD output current level (~10-20 microamps for NbTiN SNSPDs). The mutual inductance M should be chosen so that the switching threshold corresponds to a reliable photon detection signal. Terai et al. (2012) demonstrated this with 37 ps jitter. The 8 converters should share a common bias supply with independent trimming if needed.
7.2 Merge Stage
A binary tree of 7 two-input SFQ mergers (confluence buffers). Three stages: 4 mergers in stage 1, 2 in stage 2, 1 in stage 3. JTL segments between stages for impedance matching and signal restoration. Total propagation delay through the tree: approximately 30-50 ps. Path-length matching from each of the 8 inputs to the tree output should be equalized to within 5-10 ps to avoid systematic timing bias. This is a layout constraint, not a logic constraint - it requires symmetric routing of the JTL interconnects.
7.3 Timing Reference Strategy
No on-chip timing reference. The merged output pulse is the timing datum. The room-temperature TDC measures the arrival time of this pulse relative to a global clock (typically the photonic circuit's pump laser repetition rate or an external reference oscillator). The timing budget is: SNSPD intrinsic jitter (~10-40 ps) + SFQ conversion jitter (~5-10 ps) + merger chain jitter (~3-5 ps) + cable/driver jitter (~5-10 ps) = ~15-45 ps RSS, within the 50 ps target.
7.4 Optional Count/Multiplicity Path
Not included in the first generation. If needed, a 3-bit TFF counter at the merger output (Architecture A2 upgrade) adds ~20-30 JJ. The counter accumulates hits during a window defined by an external gate signal. The counter value can be read out via DFQ stack amplitude encoding (producing a voltage proportional to the count) or via a slow serial readout. This is a straightforward second-generation addition.
7.5 Output Link Strategy
The merged SFQ pulse is amplified by a DFQ (double-flux-quantum) amplifier stack or SFQ/DC converter to produce a voltage pulse of ~2-5 mV amplitude with ~400 ps rise time. This is transmitted on a single coaxial cable to room temperature. For a chip with N blocks, N output coaxial cables are needed. At the expected channel counts (tens of blocks), this is manageable within typical cryostat wiring budgets. If cable count becomes limiting, a shared serializer could multiplex multiple block outputs onto fewer cables, but this adds complexity and should be deferred to a later generation.
7.6 Calibration Strategy
Calibration consists of: (1) Setting DC bias currents for all JJs to the optimal operating point (~70% of Ic). This is a one-time calibration per cooldown, adjustable via room-temperature current sources. (2) Verifying each block responds to test pulses. The MC-DC/SFQ converters can be triggered by injecting test currents through the SNSPD bias lines. (3) Measuring the propagation delay through each block relative to a common reference to establish inter-block timing offsets. This is a one-time characterization, stable as long as the cryogenic temperature is stable.
7.7 Room-Temperature Decoding
The room-temperature electronics receive one pulse per photon detection event per block. The pulse is discriminated by a comparator and timestamped by a TDC. The TDC provides a digital timestamp for each event. Event correlation, coincidence detection, and any statistical analysis are performed in software on the warm side. The warm electronics also provide the bias currents for all SFQ circuits and monitor the health of each block.
8. Risks and Validation Plan
8.1 Technical Risks
Risk 1: Pulse collision and multi-hit loss
If two or more SNSPDs in the same 8-pixel group fire within the merger dead time (~10-20 ps), only one output pulse is produced. At low event rates this is negligible, but at high rates or with correlated photon arrivals, it causes systematic undercounting.
Mitigation: At expected event rates (< 10 MHz per block), the probability of two detectors firing within 20 ps is extremely small (< 1e-4 per event window even at 100 MHz). Monitor for rate-dependent anomalies. If needed, upgrade to A2 with counter.
Risk 2: Routing skew
Unequal path lengths from the 8 MC-DC/SFQ converters to the merger tree output cause systematic timing offsets between channels. Since pixel identity is not tracked, this manifests as additional timing jitter on the merged output.
Mitigation: Symmetric tree layout with matched JTL path lengths. Target < 5 ps skew. This is a layout discipline issue, not a fundamental limitation. Characterize skew with per-channel test pulses during calibration.
Risk 3: Output driver reliability
The SFQ/DC driver or DFQ amplifier must reliably produce a voltage pulse large enough to survive cable attenuation and noise on the path to room temperature. Insufficient output amplitude causes missed events or degraded timing.
Mitigation: DFQ amplifier stacks producing > 2 mV have been demonstrated. Use a multi-stage DFQ stack if needed. Monitor output pulse height and adjust bias currents.
Risk 4: Fabrication yield
With ~30-50 JJ per block and tens of blocks per chip, total JJ count reaches 1000-5000. At typical RSFQ fabrication yields (> 99% per JJ for mature processes), block-level yield should be high, but systematic defects could disable blocks.
Mitigation: Design for redundancy if possible. Test each block independently. The small per-block JJ count and independent block architecture make partial-chip operation feasible.
Risk 5: Bias margin collapse in dense tiling
Dense tiling of many blocks on one chip requires careful management of DC bias current distribution. Return currents and magnetic field from bias lines can shift operating points of nearby blocks.
Mitigation: Use ERSFQ-style superconducting bias distribution if available. Shield bias lines. Maintain generous inter-block spacing in first generation.
8.2 Staged Validation Sequence
Stage 1: Single-block electrical test (no detectors)
Fabricate one merger block with 8 DC/SFQ converter inputs.
Inject electrical test pulses through the converter inputs.
Verify merged output pulse at room temperature via coaxial cable.
Measure propagation delay, jitter, and bias margins.
Characterize merger dead time and multi-hit behavior by injecting simultaneous pulses on multiple inputs.
Stage 2: Single-block with SNSPDs
Wire-bond or flip-chip the merger block to an 8-pixel SNSPD array.
Illuminate with attenuated laser (single-photon level).
Measure system timing jitter end-to-end.
Verify detection efficiency is

Output:
 per-pixel identification is needed. This is the single most important assumption. If it changes, the architecture must change.
7. Design Guidance for Next Step
The following provides block-level decomposition for Architecture A1 without specifying circuit-level designs.
7.1 Front-End Interface
Each of the 8 SNSPDs connects to a magnetically-coupled DC/SFQ (MC-DC/SFQ) converter. This converter should be tuned to trigger at the SNSPD output current level (~10-20 microamps for NbTiN SNSPDs). The mutual inductance M should be chosen so that the switching threshold corresponds to a reliable photon detection signal. Terai et al. (2012) demonstrated this with 37 ps jitter. The 8 converters should share a common bias supply with independent trimming if needed.
7.2 Merge Stage
A binary tree of 7 two-input SFQ mergers (confluence buffers). Three stages: 4 mergers in stage 1, 2 in stage 2, 1 in stage 3. JTL segments between stages for impedance matching and signal restoration. Total propagation delay through the tree: approximately 30-50 ps. Path-length matching from each of the 8 inputs to the tree output should be equalized to within 5-10 ps to avoid systematic timing bias. This is a layout constraint, not a logic constraint - it requires symmetric routing of the JTL interconnects.
7.3 Timing Reference Strategy
No on-chip timing reference. The merged output pulse is the timing datum. The room-temperature TDC measures the arrival time of this pulse relative to a global clock (typically the photonic circuit's pump laser repetition rate or an external reference oscillator). The timing budget is: SNSPD intrinsic jitter (~10-40 ps) + SFQ conversion jitter (~5-10 ps) + merger chain jitter (~3-5 ps) + cable/driver jitter (~5-10 ps) = ~15-45 ps RSS, within the 50 ps target.
7.4 Optional Count/Multiplicity Path
Not included in the first generation. If needed, a 3-bit TFF counter at the merger output (Architecture A2 upgrade) adds ~20-30 JJ. The counter accumulates hits during a window defined by an external gate signal. The counter value can be read out via DFQ stack amplitude encoding (producing a voltage proportional to the count) or via a slow serial readout. This is a straightforward second-generation addition.
7.5 Output Link Strategy
The merged SFQ pulse is amplified by a DFQ (double-flux-quantum) amplifier stack or SFQ/DC converter to produce a voltage pulse of ~2-5 mV amplitude with ~400 ps rise time. This is transmitted on a single coaxial cable to room temperature. For a chip with N blocks, N output coaxial cables are needed. At the expected channel counts (tens of blocks), this is manageable within typical cryostat wiring budgets. If cable count becomes limiting, a shared serializer could multiplex multiple block outputs onto fewer cables, but this adds complexity and should be deferred to a later generation.
7.6 Calibration Strategy
Calibration consists of: (1) Setting DC bias currents for all JJs to the optimal operating point (~70% of Ic). This is a one-time calibration per cooldown, adjustable via room-temperature current sources. (2) Verifying each block responds to test pulses. The MC-DC/SFQ converters can be triggered by injecting test currents through the SNSPD bias lines. (3) Measuring the propagation delay through each block relative to a common reference to establish inter-block timing offsets. This is a one-time characterization, stable as long as the cryogenic temperature is stable.
7.7 Room-Temperature Decoding
The room-temperature electronics receive one pulse per photon detection event per block. The pulse is discriminated by a comparator and timestamped by a TDC. The TDC provides a digital timestamp for each event. Event correlation, coincidence detection, and any statistical analysis are performed in software on the warm side. The warm electronics also provide the bias currents for all SFQ circuits and monitor the health of each block.
8. Risks and Validation Plan
8.1 Technical Risks
Risk 1: Pulse collision and multi-hit loss
If two or more SNSPDs in the same 8-pixel group fire within the merger dead time (~10-20 ps), only one output pulse is produced. At low event rates this is negligible, but at high rates or with correlated photon arrivals, it causes systematic undercounting.
Mitigation: At expected event rates (< 10 MHz per block), the probability of two detectors firing within 20 ps is extremely small (< 1e-4 per event window even at 100 MHz). Monitor for rate-dependent anomalies. If needed, upgrade to A2 with counter.
Risk 2: Routing skew
Unequal path lengths from the 8 MC-DC/SFQ converters to the merger tree output cause systematic timing offsets between channels. Since pixel identity is not tracked, this manifests as additional timing jitter on the merged output.
Mitigation: Symmetric tree layout with matched JTL path lengths. Target < 5 ps skew. This is a layout discipline issue, not a fundamental limitation. Characterize skew with per-channel test pulses during calibration.
Risk 3: Output driver reliability
The SFQ/DC driver or DFQ amplifier must reliably produce a voltage pulse large enough to survive cable attenuation and noise on the path to room temperature. Insufficient output amplitude causes missed events or degraded timing.
Mitigation: DFQ amplifier stacks producing > 2 mV have been demonstrated. Use a multi-stage DFQ stack if needed. Monitor output pulse height and adjust bias currents.
Risk 4: Fabrication yield
With ~30-50 JJ per block and tens of blocks per chip, total JJ count reaches 1000-5000. At typical RSFQ fabrication yields (> 99% per JJ for mature processes), block-level yield should be high, but systematic defects could disable blocks.
Mitigation: Design for redundancy if possible. Test each block independently. The small per-block JJ count and independent block architecture make partial-chip operation feasible.
Risk 5: Bias margin collapse in dense tiling
Dense tiling of many blocks on one chip requires careful management of DC bias current distribution. Return currents and magnetic field from bias lines can shift operating points of nearby blocks.
Mitigation: Use ERSFQ-style superconducting bias distribution if available. Shield bias lines. Maintain generous inter-block spacing in first generation.
8.2 Staged Validation Sequence
Stage 1: Single-block electrical test (no detectors)
Fabricate one merger block with 8 DC/SFQ converter inputs.
Inject electrical test pulses through the converter inputs.
Verify merged output pulse at room temperature via coaxial cable.
Measure propagation delay, jitter, and bias margins.
Characterize merger dead time and multi-hit behavior by injecting simultaneous pulses on multiple inputs.
Stage 2: Single-block with SNSPDs
Wire-bond or flip-chip the merger block to an 8-pixel SNSPD array.
Illuminate with attenuated laser (single-photon level).
Measure system timing jitter end-to-end.
Verify detection efficiency is not degraded by SFQ circuit power dissipation.
Measure timing as a function of which detector in the group fires (to verify path-length matching).
Stage 3: Multi-block chip
Fabricate a chip with 4-8 independent superpixel merger blocks.
Characterize inter-block crosstalk and bias margin stability.
Verify all blocks operate simultaneously.
Measure total chip power dissipation.
Stage 4: System integration
Integrate multi-block chip with photonic quantum computing test setup.
Verify timing resolution meets < 50 ps target in actual operating conditions.
Characterize event loss rate at expected photon flux.
Benchmark against conventional amplifier-based SNSPD readout.
9. Answers to Required Architecture Questions
If pixel identity is irrelevant, what is the simplest plausible SFQ architecture?
A binary tree of SFQ mergers (confluence buffers) reducing 8 inputs to 1 output, followed by an SFQ/DC driver. No clock, no counter, no address encoder. Approximately 30-50 Josephson junctions total. This is Architecture A1.
Is plain asynchronous OR-like SFQ merging sufficient?
Yes, with caveats. The SFQ merger functions as an asynchronous OR: any input produces an output. The caveats are: (1) dead time of ~10-20 ps per merger stage means near-simultaneous pulses may be swallowed; (2) the merger does not indicate which or how many inputs fired. For the stated problem (timing only, pixel identity irrelevant, low event rates), both caveats are acceptable.
Can calibrated differential delay lines be useful?
They could provide multiplicity hints by spreading simultaneous events into a time sequence that room-temperature electronics can resolve. However, the area cost (~120 mm of superconducting microstrip for 700 ps delay spread), calibration burden, and added timing ambiguity outweigh the benefit for a first-generation system where multiplicity is not required. Delay lines are more useful in Architecture A3, which is not recommended as the first implementation.
Is on-chip counting necessary?
No, not for the first generation. If events are serialized to room temperature, the warm TDC inherently counts events by recording each timestamp. On-chip counting is only justified if multiplicity per time window is needed and cannot be derived from warm-side event timestamps.
What is the simplest way to preserve 50 ps timing?
Use the merged SFQ pulse itself as the timing datum and let a room-temperature TDC provide the timestamp. The SFQ merger chain adds < 5 ps jitter. No on-chip clock or TDC is needed. The 50 ps budget is dominated by the SNSPD intrinsic jitter and the MC-DC/SFQ conversion stage, both of which are upstream of the merger and already demonstrated at < 40 ps.
Is a local clock worth the cost?
No, not for this problem. A local clock requires distribution to every block, consumes significant power, adds JJ for clock splitters and buffers, and provides no benefit that room-temperature timestamping cannot achieve more easily. A clock is only justified if on-chip TDC resolution beyond what warm electronics can provide is needed, or if complex on-chip logic (arbitration, packet formation) is required. Neither applies here.
What is the best output architecture for many replicated channels?
One fast serial line (coaxial cable) per block is the simplest and recommended approach for the first generation. Each block produces one SFQ/DC output pulse per event. For a chip with N blocks, N output cables are needed. This scales acceptably to ~50-100 blocks with modern cryostat wiring. Beyond that, a shared bus or time-division multiplexer across blocks could reduce cable count, but adds arbitration complexity. Pulse-density encoding and packetized output are unnecessary at the expected event rates.
What are the dominant failure modes?
In order of likelihood: (1) Bias margin collapse due to process variation or thermal drift - mitigated by operating well within margins and monitoring. (2) Routing skew causing systematic timing offsets - mitigated by symmetric layout. (3) Output driver failure to produce sufficient amplitude - mitigated by adequate DFQ stack sizing. (4) Pulse collision loss at high rates - mitigated by the low expected event rates. (5) Fabrication defects disabling individual blocks - mitigated by independent block architecture allowing partial-chip operation.
Which architectures are elegant but wrong for this target?
Architecture A4 (Clocked TDC-Lite) and A5 (AQFP/RSFQ hybrid) are both technically impressive and demonstrated in the literature, but they are designed for problems with stricter requirements than this one. The full on-chip TDC solves a problem that room-temperature electronics already solve more cheaply. The AQFP/RSFQ hybrid provides spatial encoding that is not needed. Both impose fabrication complexity, power, and verification burdens that are unjustified for a superpixel timing channel. The HYPRES multi-channel RSFQ TDC (Architecture A4 taken to its logical extreme) is a powerful instrument but requires an entire chip for what a simple merger tree accomplishes with 50 JJs.
End of Report

1: PK
2: P<�\word/PK
3: P<�\word/_rels/PK
4: P<�\X�
5: o!word/_rels/document.xml.rels���N�0�_%�8)P
6: ��B��p��do}{�Ҵ.�,>�؞��Zy��Vc��F3R�)@#�1�Ѽݭ�v�~��c�����"<ў�ѾP�E���X��5Nq�u�r��;���ZRg���b'q;Y��9Z�O�i�A��oTP��|H�dd�e�!�v�"g�>�=�0���JA��h�Am0��JA<�-�0�N
7: �1�.b�{�
8: ''��̉ ��=�f'���.�]&]��W��1�t��9o�Ɔ�G�N�A����PK
9: P<�\�*�O�Uword/document.xml�}[s�F�����.W�)�BP$Eɲ�3S�l���KI���&�$�
10: H���Ϻt7$%Kʘ#�fl�"���u�ֵ����扸T����'�^��Pi�Eq:���/����K�F2�R�Ó��O�����:����������4�
11: 9N��W���싫|0z"��>������2?����Lͥ����t6){a6��&�8T�WY���>�+/�Pi
12: +9����v�ջe�Jᗓ���~,��sY\Tyw�e��$.p����M�Ó�H��-� ��d��W�y._��P���[�֐�z��k��n�˙���M/q9O�-���</��U��6ˏ��y�+�����-vo᮸��ϴ+��8�|/�x��������?�9?Y��w����^��^(�w���d���[��L�N�O����;��h7�ɢT��{�|���g���7��F�������|��]\�ʍn��K7�U���L�|�5/wp�;
13: W���~w�[������N�H.�q���19ߋ�|����,R�^����xXY;4º����o�{�w��_����@Ge4��]�V7�⵲�3�g���@^��s��q-����P�_:�!l���*0>𐽃~���?�w�|g�^�]�{\��'!wU�߿:�?̿O����m����qK ��Q����屎����8�����|��D��a�d�]��t��`�_ӟ��#�ɉn~���W"��
14: ��y��*.Փ���,N�E6Ui��x��s9�"���p�*,�B�J��zB����O�L܇G���O�=]&���*	�����I|�ee����iY��	�ڪD�|T2ʪ�~�����m��>�����5�=��{��!��*ZpB������Gu��;��}��|��o�]�k�ux�w͋8����6�������C�o���kޭ�w{����\
15: yϳ�48S	�(�os����Ǹ�r����T�g��R~V.eW�dh6XC�k=��T"v	�W���\�]�C�$F=|zp��ϔ��<O�.�e���@]*}"�f(Q��F�g��><St��S!EnU�����(Xu�X��$�mxY]���O*sULUq�,�D6�%�Y:I*��J���DZt��zG�3Y����"�����\�H�a���T%��2��#�7����	$XW\����
16: d�z�"1E �,����V0!� ��q)\��V����xYX*�:����p&Yx��3$�O^�)O�,~�B-`�:��J~I&Q����V2��6�w��@�E�~	[���dA7�E��ڑ���$.`�;p�L;f�p+�|;�l�tO����L�#	��5�̅OXCBCvc|�.]:��EX�%P*����{�p�O1<P�����~_�δ�g�{�����5��b�^~�a�'�X��x�*�7�>y~�kX���+^���F��T�H�4���9oN�?�>�y����F]b��q�3|o�V~m�������5 �s!��x���_�Ix��۬�/3�1�H	�g@*b�H́�%,���o��,�8�xDdbڒQ��;��$�E�`'�r��2e�,��-�g-�&���&FS3art��ٱP��I�+0��x/���C�Ǉ;����*)cx�'�o�I��
17: ���輍/�G
18: ;(�JD�;�(b}��5��d%�0����(�2=<PӒ��H;�u%$z��MQ9岜���
19: d�j���C�2�D�Z�t	h�Ex�P~��
20: :����O@W����ϵ��;�`'`�M�	�f��B���$qL�,�
21: :=݁�U�ip��"T�zOtB��m��[��(蠪�f�!*�8�8�!)��������6�l,~I3%���9X�(ï����%≡M�V�*��,�Dv�u6
22: tf�t�AN7�=��hߏh�@���{k]͉����e�2�wY�@�$ ̠�"�~�;0����6��.H�Р�[�AL�U���a��rGm��;��4K)0[)	Z�P�B�=F��q]t`��F��X��(�i���Y��EL���?eP�
23: ��Ѱ�8���8����i�5� �JK�����X�*$	h�ʚ���J+��&H~6�|�y2
24:
25: 6����^l���L"*a�t%��O�.>H%I���VD�Y\�u�{�;tG�y΢o!eC@��#�>4��2����@�
26: ��L�8���7�w>�BN���Yfܭ�2���߽��'e��.X�_��{v�����t����k�󨔑__ �u|7#VYM�@�R�!��M{7c��A�n�^蔞e	�"��M�Ó�0Q���B�<�֬�|W�+m�<�`-�G0уl����-�����j�
27: u�R���r��"���	�c��{2�Ն�|�������3�;�ٟޒ!�,A��K`0�Pt3%ߍ��Ԋ������%6���q��������n8>f�d�%���;0���2���a��׵KAr/M��3�L�.�<��\��i>f2�p���0`hF�<�]���>��S%M8��@�r\��h�wx��L��7�u��C��:AW」�R���f���3 ��5����3�ߢ;.���IOKbꔠr�gU�âw�S�z��+��2���
28: =b8a�}O�K-�/ip K�Gߑ��)����Oc5��1�|�DP^u#11;��k��D>fY8����1�ܑD���Y����ee�l�:W!F
29: P�(!/e�|%�����o3�b��3�&
30: �J��pc���lUM�+��4��k�t,s0���^�呫��)3��,)����Hi�R��h?���&v��D�}��%;�X�CP�1��؊;�D�*�O�q�0��b#�pq��"�2ʁt����{�?T�a����F��^�0����5���K��0εd�2�s��a�IgU�Q����4��I;��
31: ]�����m�
32: �����&�$ò��A���{�&6����2������t��f�y� �*+�+M�[{�ɼ��A_ʅ��c|)����
33: Tm�%ּ�t������o�7 l*��N��8��H#C����o5{�_���LT��Ĥ����η��f-�'�^>���ɞ0늷=�2���Vz����.U�v�YO�H_�]���������c4��l�¦�lM0�ĸUH.w*�sG�Yi���ˏ����r���������p��^08<��ߧf����7qz���+m���n�O{h�B�M-jW�q�²N�������^�_0xF�C�n2cyJ��h��(!��+�SL7�~�cN<X&C�	VԷ,���������XSc.'�LW!��
34: }g�/�l��=��4yQ����&Ui�A@.b��L��7*}jGO�!�L�w��0q��K��	W�y�m�+���+Y�:,0{�����e?󧗟���r����,����"��7Yˬ�@&M�a�HV��.��$��^��3��B��+�3��F����!.�8@��y���YT%���fxK#S0c+vz�V׊�n86tD
35: ����uid�*�o+9g�[X7�GC۶�'	ZN\t~�,���_F�q��������-�R_K<X����ȋX+.���d:���Mv����0������Ú.��.��;`�a�Cu{w���=���&�6�As_�O5���`O@��$�y��[�@�4��SW`�,���4%
36: ���%yT�~�8�/�-���x`u��yLO��	_yciH��I����jJԆ�Ⰴ�l��L�/�x2H�2�Sv�Ռ���L�(�Nh�n��Z6��M��P@[�ۤ���GcZ�&
37: Vj�V��e�A@�Bk$$���`���c�FA1��*Ԝ:
38: �.4K5Cq-�Re6?���ȃa����v�F1��2[��x^�L4�Q�^��vE�$׽OP��V����m㔿<�Y�u'�x��k3�=�@��q�f�i�"�@5db���P���E,F�mvax����5b�� џzmҸ:X�J�(�~:������G�����G�?�M�$~:�Àh�I�t�seʧ���*j��#']�l��5FK[4�˼�r`�u&{GM}�54�c�b
39: �c������V���a�f�o#I\��D���G��&����9�
40: �j;��+�$ڥ�kU�-ن�:;��X�gj��~%�@�6��d�g9�:i�fI6]`j�k�N�+��ﱻ�Ҋ���`�td5��2Y/m.����Xk
41: 6��Pu\�*M�ħM��t0��´*�WZ��UNiVLaܐ�03�Y�K�i�u|V�dm�m^��4nBq�i�q֨2���;߯��R�db[b8Ź�vᇪ�m��f������N{�dF������K(��j.P#�V����/)�`r%��f���2ڀZoT	�h�����qh�v���υY���#�Y#$���7��	�x±�%�؄n�GM*
42: k��M~
43: 9x9J؂��t�%��	u؈�f�L�F�j'<[�=����Rͻ؅IFP�b��F%�EPUֺ9ԓ��m.5�CM&��%q�6Cn�2"�
44: �ٌ�J��mz�&P�h����<�V�"�3ݬ�Y��ZΕ��c�Axw�/M��5�R���c�Wi�� J�WF`K���V��j�m���s�@��1'��;9�Z^]r:��J�R��x�X��%XFϭ@��u1%x̡�
45: *���x�8�a�?̰4�a��Fg�4�r��u|��h@ɰ�3*�a�Y��jG.T�:��ʹY
46: �A��<~�q\��aLؼw������]���W��K����ƍ����a�/>����,*1�
47: ����Z���ֹrV�Q�G!A"k��5��ᢇ���m����BSG[o��Ѡ7��mS���g�%6%�|�a�Д�,�3֘bx9����B�$�L�ܱ�/�9�D����YԳ���J�ASܲƵ�M�IE�^D��I�[���m�̦m��j��F�����s���ڰ��g8����lw��۹Փ�R��ו*���Ͳe�x�M�@�m�D�}�[�+/�cVi����T
48: }]i��)������Ӷ�熧ܡ��K{�O��&��k	����1@
49: ���kl�'Z����*.�5��ȿt�SWc��_ƒ�K�X<����Ǧ�JS
50: ��7#��P�6'������?���_`�5//�k����������`=̵e�A�t�.q�,���c�WH��:�m�G�6���(i٘hX��,���l��]��	��,��
51: ��[7p��IR�P
52: F9�Uڍ4���e�� �=����U������\;D��P�OϬO�x���ߙ��ׇ=�丹��j�;���?�~`�[;�9��F��vl��?��sodxb��w�XE��K�)�Q�Q�?�;��)�D��b\�m�.m}�M<_�c&9	�1�6��츪3$6�$���`/���u�e�������E'guZ�Q��؏�� x{���#7l	i��,<�b��T=,���"èƵ�	�W��Y�1b��n��zV �[&$�,.N�#*���E�Sxe�[S��j^�f�l/�D��
53: �AX�E�:�ƃ6��la��z��,xb
54: M-T��;2��
55: u���O�x6�ע>�s_����y�p04�[�33g�.��g���W1�(8��٢)%:4[˨��(�Hq�UI$�8����
56: 8�)��[
57: �xX��i|��A#,��4��d�qǭj�w��&�]<g0Ӯ�z���H�[n���H��n�j�,�sP�FG���4�3R7@�F���Ŷ93v���2@�������t��t�,�>"�&�މ�]��:��0K��m}wMT~���
58: ^�<�:��̷z^�����nLS�"S�㠠I�/5�o��x�y���CJ��4�$�h�+��m)��K���KKAay�P.�O���T;}��+o�̐��|�LW�SMM�~�ᱲ=qz- �b�J�ܰe���`���8[��"�$:��v��K�����x�n��������������=�E���={��k'2��1@"�n�~�1�,0:���(-�al�G�4��Q\��Ջ/�9����3��z�i�:��Ã�C�e�&��7�RtW�z�O>Nڞ�}0<=<�$�i��h��b����۱<�jO�)**���+�,��c6�5q�jJ��R	2$<>n���Ef�Ku,>��í�tJ.v��M�`0(��v�������3�o'p3��~�i|������;5�N\ّ;e��t�q�c���f-p�'��3�I�����g�����5�tg��Fo�
59: �8l㝵��S���
60: �'��J�Z!��
61: �-+/p(=���ӥ온m㮇��x|��8?=uQ��!�������/θ�)x	�rF��ǀY|�"����X1Ϳb�lf*�Ȗ+������z�7u\��?��S7g_�ς��!×g-|�?|yz�w8n�Խ]C�
62: "U>D�ʝ	2�#ƖA³�D7X�&���\�ޒ��^t&�a�(�aZ������X�:�L�
63: g&���琺��x
64: �q�n�O�ĞiA��>��5�N�*���cM����k�m�yn|x^h������`<��j��J�9��a��I[���av�0}�*©�+�"��펒{X[�i$�����$�h6_������m۪M�}^�Q�j�Oc@�9"�&�ӰUs<�xuM�㹉d���o���}L������A�Z}(puu��1�1�Dv��ݼ�/v�F��F��6��S�BE&��B3�t����;T�#
65: �CUl"!����0����)���	���+1��*}z�;q
66: ��c�������h�K�3[㎷��Yk�;X7���_�jx�RɨQ�3�@AVй倏��v"侮mc�M�� A�9�&8a���{�)�/�"�q���;x��8�*߭�|���H��#�ݠ>G1jh�v��/R��S�݉*�ּ9��I�]<�+!���w���H�8��aq˦Aź:�
67: �gF�zk��@W�r��'&���!Λ��B��V[�l
68: A�Mo���^��H�<��� �5��M-�K�w����$^�c�+�:�*�ij�
69: ����"�q�g��}H	��uU�o��t�X����o�A����eNQ'q�zu��:Nä�l�5,|�T�5��d��7s�����7]����)���OO�+�Q��ĥG���V�_w�;��W�_:�ݛ�b&��Hr��iⰣR��<���"�wG`�4�S�LȈca�7ӵk�2��o�C���?p�O
70: ~���&�ux�q�	�j��E��6,�`D:�g�X�8Wt���$����d���wlX%�LUVis2�=M�W���t�a
71: �����){Db�9��c,>
72: b���>��+� k�(�k,�ԡ� �1�=�?�R�>W�<+��_`^��)��+���N�m�ߍ��=��II?�į �T��c��:�IV�Zr�lf��Ď!��Y���6֝��8��rs7q�X6KȠ'�(�����v`�m�u�QMvO�^t�ٹ��Ө6-f��f϶����s>��0l6���o�mh����SGG����$r$��Q�e���9hd��p��l�Y,�f�-����nM�v[w=Go{`m�=lh4�x���x�����W�x ��2
73: �T��MB�jo9�2�ڟ��+�&?v		Q��`�k{�y��3H�i$�!�\ϩ��f�My�g�넉Wb*?�Y-|���)����P����p�];#���~0�'�*��H���6fxU����w�9���A60T��>^��<��`�C��)B��Ty)�y�r�t�������^��NY
74: ]`L����������w9ϿO	��o6
75: ���.q���3���ߨ0[w�4WiX��������4�'�-���iӈ��bȺ���0�8��W�uݭ�_�汩�A��x*�ι�bT�k�e<���P�X��U�g�U�̹E^�.U�q+����`���x�"��Vh�
76: ��o_~�x?}�N��`�2�)��1)��rb�Us�u�̅'<W.�Fy�m�g|���D�4|�zF�TKt�bDw��ʶ.s����;X�w�Q/��\�4?�p�g�s>w윹ë۶���������G���T�eY�P��X��!����@�Ŀ�6�綩g6i�Dj�
77: )1n4x����������0��@����F�8y��,�+�v߉E A�<N�O+��i�H:�ŏ/>rC�@��ƌ��|�3����鞘����d��Fi')Ш4`Q��6�)��lYnO&4%m���P�!��&x�����ն���ț,�b�o�NRr����T�$��"�H`.�u=T�3X�b�F��`�E�ȇ��@9�D��8�Cdn�e�x��ቬ�xzVc�;��w2��BK%>�9b�.��6�j8�ᐳe��LB��S�u.�jv�M�2hn��Jot�+�Mg�����h������v��m��r���t�S�4��ouH}v���׎�H5�G��H��8�9�=Aׁ%���z>����ԛ�x0Q)��@b�|~| j�:����{�or,�X��c����{���Xj�FK�2p�`����ܼ����x����:Q����O���L(y�=O��=Cz��R7e�~���u�E}
78: rD��Q��ji_q����`y	�p����eS���r�fA7w�b����
79: ��C��w�x遴��l3U���߾��Ɯ�nO�����c��Wm��uO����'��LfKh��MCCӘh�Ւzy�kcR�-ƽ��q�ן[3�b�􇄅ڡ�7#��람s���2Ol�e��;��297	�x�ve�`�P)}����m�U"�1��s���
80: ?�
81: ��(P^��b�Qcм��Զ$8x�y����9����dh3��$9���f�\���-���G��1�&\,Ϛl6c��M�m�~`3�'X��n6�;DZ}�����5�R��:��
82: {3�R�bf�w��.�ư&q�G�J#�+@�۶��C�߶�{c�.\f����`p{�3�5w���I�w���M�m�K7K�*��I���4F��9Ϩ�X�E��(���N&��L�!�C�S�)]X�LӟE�`dg���]�C�N�ͷ��4�����
83: ��K�#"�O��v>�
84: ��h�
85: Hp;��^?�;_]���S@Y~��6��˫P��m�{}���n�&�mh_�r�yj���D��n{����~ol��J���3*�N꺺�Ȩk����#�xh?޳���Qw��zB)����<E��X�Jլ�"���Jp�,�9s�|�13�:KM��D����XFޙ�x���R�;����/��Bi�e�;��\w�&�Q�D]���b9�%�H06��㥵/�`�2�
86: ��a�Ď�c����ʹ�˕�Ruב+v�8�������p㞫��
87: ��k��f<�cۘ��"��<lBbޣ9�H:?����ύК7�K�)1��2� ��F�F��q��e�**�8|���11�0�Ӑ��1V*��3oJ]�\�u�b|��a�0K��G4:���q�੨�At�9%/i���޻s�a760n,u�n��[qҎ�ْ<��MaB��������h�<&5�f�~{g](���񓴩���gfQ&�P(�#��/%�pN��>�"����Ji���㷹LA��m��-�4~�UzW���o�+�4k�&f��}�<W�]�V)3bA����i���2� �5ýx
88: Tr�`����5��u�R5��k��4�m��c{:_�����LTwl׮_�J{���!��o�k'�1�&���F��y�G
89: .�3��X�h��9G���=;xpC�)�Ğ#��Ӕ^HP�xh�̍�}���$��.�b=�a(�x\��Ԡ:�=hl���/�l�'.v/������6��)���8��:{��-�9��HWʧP\�&������r;3w,�ZT��3��[R��{��f_��':��hV��4�~��5F�$d�������������:�:�ti���C��Z���pX�-�5���kt;�#��R���
90: ۡM��r��
91: �H�q:
92: ��Y��@~d�����I�m��V�T�`ꀀu������sK����v��^�<���v0`^|���)�=4b��m[fu�#>�6+�E�H�=y��\��j�A]j�
93: �ddY.Y����%�%�kM�����R@RHn���
94: ̔�{G,�d�w�ǉ���A��F[F�S�����p�9�[F���x�
95: 	L������]��`a<̆��7.�ÇG6�����b·��x�����
96: ��iF9=���,E�)��&�vv�;��7j�T����)�㟕mfކa���%h��ʺ΂��2.9-%13j�*��#63?Cp�f�iǷ��rPzCD#
97: �*��
98: �5���
99: ƥ�&�7�=6�c圌����
100: }�!��2
101: �x��nK-1�29^�Oqz��&�`0�`��sa�+Y��q�8��<&|�6��D4�D57i��Wm����)�)%�8�rc��]�Lqd�܅���;A�ؒ=P��4|�s�0�w�w��m'sn8�{~���u����D�ҝML�o��˚ØI.�l�\Ǖ�ӆ�Z�u����a�1F�ͰLW�UT������d������. �c�"	��?8��C&|��j�W�<UjĦ^�6|�'�؊F��k �Cm��X��,��>�J�������n���`5��rv�HR�?�0�J�?l���N�R3�G�=���79�.�ҋ1t�R��R��'��:�6�މ?���LB�ylk���s��\���c��Gg�<һ�:�o��u�� �lX�e+[ӳ�H|��j��d�_��Ϸ���xb��Sޓݶ)�M�޴1��=�,����w���-W���T���/�<�-۫�ap5��գ�8�n�0
102: v>�_�(t�2�}S�MPL�	�c�glB��?����m��TiaKv��a�>Lj>e�b��.�[���.
103: э5���`�+c5�Y�X�\�آ��{��p�	��MG/e��L��ri�dp�6�D��k۩;�0ʀ�C�Zh�6L՛�M{8u�N�f>0i(r�xa:G;J����W���6�9S;�2����V
104: ��]`�?&Ǜ��K�TO����5�/9�xr(��X��1ӱK�����g`����~���J��	��{����`�Pv[Sj����k:��,��(b��ƌ��0	jL�.wd�B��C�{"s��n�{�����rD2�bRt���k�rW���������#%S�f�D�����Q����$
105: X��	�<'Bciclƻ�Ih9���������p՚�&2�S�B�^_[�����r���z�|��d?+q3yؕ	��R�G(�h�Myť�G�ճ�06d�?p$Yڹ��$������L�M��P�<lon:u�9I��K��͍[f�6飽UQ\ͷ�@w��J��8m�/@c�.k�o?=i�-�q�#q�F	d���	xs�}��Z/��_�����G{6e;]f����dRhv��|ޞ�"�#��5o�i��k���V�]=u����~�h˶{c~���d5�g���´�mݖRsS��FX�E�l��n��fq.5=9�E|,;l��!�\��9�,]�w��L���35�ɨ�2�Ta=\9�r��k&�"w��$�䲨��ʛ�b������{�K��9�i��E�U�3�໧v���݊'^��Ҿ9��{˂�d����
106: N���kj�i4�*H:�#K��FU��j2���9(0墮x
107: �xO/��]����Ұ��
108: }[�`:��j����!���ܩa�Pn����Ap��\^�C�aZZL�Uy���2�E�ۖ���1N\|/|'��h����T�c���0��yv��Mqo���h�(��T"�7���m�rv<h�nP	��ٓ+�>��K��:�e{�y�O>�F���E<�����T�D]��s�`���E]��v*���r">���[P�����5[Q�*9��(~8X�^`엤,d����q��#nƣAq�E@-�}�1+�Y�w�z�pN��z��W�<��5b�=rݷT��A���C3���ı�@��i�,�
109: 8����b����@6�y�]�h:9&�g:��1�	��4�'���Tͥ�jh	 yǮl�v�$�y�B��>�C\ա�b�q�(Sةx�a*lr�>���R�X���z+����M��
110: ��I��ΦnI���-�idYݴ�s򬘰��,@�r�(���s�iT����c��)�qh N3�ϓ^($b��;����)e�)ǉ��p�8�ͱG�I"��~x�l���,|�Ǭإ�,���U��0K2x���ԟx2�5)���qV�Xx�+
111: �y�b������z�Kv�d�m��'p�S��$K���þ!x�����[��XU���O��p��K.�[��3���jp&Y{�W�d�573ʚKv��K�"��=׏�O�=}bo&J����dX���*��+$�uox�
112: ��\s�]���zk�`LNq�a����O�1�AT��
113: ڱ�����D����jj���:���5�����I�ϾQX	�=�l���[p����[� 7g��`-7�ܼ�����������[���n�\�������[v�v�K��vC�Y��-3o3����\r�zf�u�6����-�Z�Md����k>m�s���/򳙾>�#���^n�w��{�yf.�.��Z�m��!�o˲-�n��Ѡ�ݖw��wi���ۖo�r|�FZ&~�L|�S��ݷZ�e�-b�����|���C���QkYv�X�Z�m�v�6X?ζeݖu*��ȱmp�e߇;v܂�(]��4p˽�Ľ|�p˴-�n��g-ӶL�UL{�Ök[��*�5�Z�m�v��v������m`����ÿ���$K7ʴ��-�n����c[��"��F-Ƕ�E;
114: �[�m9v�8� 8l9���-�����(B˽�ʽ��Li�o˿[ĿԀ��E�-�n۶e�-Ƕ�rl˱m�N˶-�6����j�۸B�����SU�lKXhx��Ż-Ƕ�rl˱ߎc�9�eٖe*˶A��m��moִm8��߇ϿAAg���jg4��]���m��m۠B˱�ű��m�vٶU�-���8�
115: )������L���\�KoC�������-�n#߶g��|��|۞VҲl˲-˶,��lVh��a��G�gH�A��}��}۠B˷�ȷmP���m���CkYv�X�C�-˶,�E,����6�������ϏE�r�F*
116: ۰B˼�ļ�Ɩm��mۢܖc��c�m��m�I -���X��'�������%�$�������M����-˶,�M,{VY:ôM����M��.gm0���m�YD�q��l۲�_�mMP�'M��G�\N�}�����P�\$�.勒���	�Vz�U��瘌��q��R�eU�3�x��.��E<�Ţ^�����Y��"�?�D�U�T��Uj.	��@f��
117: �e0�#�$q
118: �>=���|R�rb-
119: �RR�r����3�牂ߖ�10��oL�$ɮpQ�p��;�M�����B�3fɴ��7��2q\�~�*����p�����A
120: }�ׂ1�

Runtime event: approval granted for apr-1780181656370.
Action: native_tool:bash.
Scope: /home/matrix-lite/app: python3 -c "
import zipfile, xml.etree.ElementTree as ET
with zipfile.ZipFile('/home/matrix-lite/state/inbox/Rz1MCI4qAcDHsyEFYlnmUM3lUPnUpRAOhhugFb8DRHU/sfq_architecture_report _1_.docx', 'r') as z:
    with z.open('word/document.xml') as f:
        tree = ET.parse(f)
        root = tree.getroot()
        ns = {'w': 'http://schemas.openxmlformats.org/wordprocessingml/2006/main'}
        texts = []
        for p in root.findall('.//w:p', ns):
            para_text = ''.join.
Command/input: python3 -c "
import zipfile, xml.etree.ElementTree as ET
with zipfile.ZipFile('/home/matrix-lite/state/inbox/Rz1MCI4qAcDHsyEFYlnmUM3lUPnUpRAOhhugFb8DRHU/sfq_architecture_report _1_.docx', 'r') as z:
    with z.open('word/document.xml') as f:
        tree = ET.parse(f)
        root = tree.getroot()
        ns = {'w': 'http://schemas.openxmlformats.org/wordprocessingml/2006/main'}
        texts = []
        for p in root.findall('.//w:p', ns):
            para_text = ''.join(t.text or '' for t in p.findall('.//w:t', ns))
            if para_text.strip():
                texts.append(para_text)
        print('\n'.join(texts))
".
Tool input: {"command": "python3 -c \"\nimport zipfile, xml.etree.ElementTree as ET\nwith zipfile.ZipFile('/home/matrix-lite/state/inbox/Rz1MCI4qAcDHsyEFYlnmUM3lUPnUpRAOhhugFb8DRHU/sfq_architecture_report _1_.docx', 'r') as z:\n    with z.open('word/document.xml') as f:\n        tree = ET.parse(f)\n        root = tree.getroot()\n        ns = {'w': 'http://schemas.openxmlformats.org/wordprocessingml/2006/main'}\n        texts = []\n        for p in root.findall('.//w:p', ns):\n            para_text = ''.join(t.text or '' for t in p.findall('.//w:t', ns))\n            if para_text.strip():\n                texts.append(para_text)\n        print('\\n'.join(texts))\n\"", "cwd": "/home/matrix-lite/app"}
Agent intent/context: Extract text from docx XML
Decision by: @gleb:matrix.nvdll.org.
Decision reaction: 👍.
Decision rejection reason: (none).
Original user request: Load the relevant skill if useful, inspect this
     file, prepend your concise analysis to the file and send the result back.
Original attachment metadata:
{"body": "sfq_architecture_report (1).docx", "download": {"event_id": "$Rz1MCI4qAcDHsyEFYlnmUM3lUPnUpRAOhhugFb8DRHU", "filename": "sfq_architecture_report _1_.docx", "mime": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "mxc_url": "mxc://matrix.nvdll.org/yet7E7Rnx8QlGA5TiCEAsIgROzgGPuJk", "path": "/home/matrix-lite/state/inbox/Rz1MCI4qAcDHsyEFYlnmUM3lUPnUpRAOhhugFb8DRHU/sfq_architecture_report _1_.docx", "size": 30115}, "encrypted": false, "filename": null, "local_path": "/home/matrix-lite/state/inbox/Rz1MCI4qAcDHsyEFYlnmUM3lUPnUpRAOhhugFb8DRHU/sfq_architecture_report _1_.docx", "mime": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "msgtype": "m.file", "mxc_url": "mxc://matrix.nvdll.org/yet7E7Rnx8QlGA5TiCEAsIgROzgGPuJk", "size": 30115}
Runtime metadata: the requested approval was granted. Continue using the granted scope/action; if a tool still refuses it, explain that runtime permission integration failed instead of requesting the same approval again.

Continue the original task now if possible. If permission was denied, explain the outcome and propose a safer alternative.


cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical test (no detectors)',
    'Single-block with SNSPDs',
    'Multi-block chip (4-8 blocks)',
    'System integration with photonic quantum computer',
]
for stage in stages:
    doc.add_paragraph(stage, style='List Bullet')

doc.add_heading('Bottom Line', level=2)
p = doc.add_paragraph()
p.add_run('This is a well-reasoned minimalist architecture (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-identity-irrelevant + timing-only + low-rate = simple merger tree is optimal. The staged validation plan and risk mitigations are appropriate for a first-generation cryogenic readout IC.')

# Separator
doc.add_paragraph()
doc.add_paragraph('─' * 60)
doc.add_paragraph()

# Original content
doc.add_heading('Original Document Content', level=1)

# Read original content
with open('/home/matrix-lite/state/inbox/Rz1MCI4qAcDHsyEFYlnmUM3lUPnUpRAOhhugFb8DRHU/sfq_architecture_report _1_.docx', 'rb') as f:
    from docx import Document as OrigDoc
    orig_doc = OrigDoc(f)
    for para in orig_doc.paragraphs:
        doc.add_paragraph(para.text)

# Save
doc.save('/home/matrix-lite/workspace/native-smoke/sfq_architecture_report_annotated.docx')
print('Done')
"

sfq_architecture_report (1).docx

Native backend bash tool request in cwd /home/matrix-lite/workspace/native-smoke. The exact command is shown above and can be allowed once or as a scoped repeated exact-command grant.

Create annotated docx with analysis prepended to original SFQ report content

/home/matrix-lite/workspace/native-smoke: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical archi


🔐 Approval requested for native bash tool: install python-docx for docx generation

Native identity and behavior

Generic smoke/native worker profile

Native tool use contract

Persistent-chat prompt port placeholder

MCP proxy capability index

Agent skill lifecycle placeholder

Pinned state

Decision state

Curated memory

Session packet candidate

Session-start/restore packet candidate

Current task

Longer-term ideas / experiments

Runtime hints and notices

Operational notices

Recent failures

Persistent context manifest health

Native scoped grants

Provider capability probes

Native session summary

Native hot tail

Bounded keyword retrieval

Vector search / RAG placeholder

Turn packet candidate

Matrix attachment/reply/batch context candidate

Native skill: prompt-governance

Current Matrix event context

Output: {"tool_calls":[{"name":"bash","args":{"command":"pip install python-docx","cwd":"/home/matrix-lite/workspace/native-smoke","summary":"install python-docx for docx generation"}}]}

bash

Output:
Traceback (most recent call last):
  File "<string>", line 2, in <module>
    from docx import Document
ModuleNotFoundError: No module named 'docx'

Summary: install python-docx for docx generation

Runtime event: approval granted for apr-1780181977444.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical archi.
Command/input: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical test (no detectors)',
    'Single-block with SNSPDs',
    'Multi-block chip (4-8 blocks)',
    'System integration with photonic quantum computer',
]
for stage in stages:
    doc.add_paragraph(stage, style='List Bullet')

doc.add_heading('Bottom Line', level=2)
p = doc.add_paragraph()
p.add_run('This is a well-reasoned minimalist architecture (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-i


sfq_architecture_report (1).docx

Runtime event: approval granted for apr-1780181977444.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical archi.
Command/input: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical test (no detectors)',
    'Single-block with SNSPDs',
    'Multi-block chip (4-8 blocks)',
    'System integration with photonic quantum computer',
]
for stage in stages:
    doc.add_paragraph(stage, style='List Bullet')

doc.add_heading('Bottom Line', level=2)
p = doc.add_paragraph()
p.add_run('This is a well-reasoned minimalist architecture (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-i

/home/matrix-lite/workspace/native-smoke: pip install python-docx


🔐 Approval requested for native bash tool: Create annotated DOCX with analysis prepended to original content

Native identity and behavior

Generic smoke/native worker profile

Native tool use contract

Persistent-chat prompt port placeholder

MCP proxy capability index

Agent skill lifecycle placeholder

Pinned state

Decision state

Curated memory

Session packet candidate

Session-start/restore packet candidate

Current task

Longer-term ideas / experiments

Runtime hints and notices

Operational notices

Recent failures

Persistent context manifest health

Native scoped grants

Provider capability probes

Native session summary

Native hot tail

Bounded keyword retrieval

Vector search / RAG placeholder

Turn packet candidate

Matrix attachment/reply/batch context candidate

Native skill: prompt-governance

Current Matrix event context

Output: {"tool_calls":[{"name":"bash","args":{"command":"cd /home/matrix-lite/workspace/native-smoke && python3 -c \"\nfrom docx import Document\nfrom docx.shared import Pt\nfrom docx.enum.text import WD_ALIGN_PARAGRAPH\n\n# Create new document\ndoc = Document()\n\n# Add title\ntitle = doc.add_heading('SFQ Architecture Report — Annotated', 0)\n\n# Add analysis section heading\ndoc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)\n\n# Analysis content\nanalysis_paras = [\n    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),\n    ('Target Application', 'Photonic quantum computing (8-pixel \\\"superpixel\\\" groups, timing-only readout)'),\n    ('Confidence', 'Verified (extracted directly from source file)'),\n]\n\nfor label, value in analysis_paras:\n    p = doc.add_paragraph()\n    p.add_run(f'{label}: ').bold = True\n    p.add_run(value)\n\ndoc.add_heading('Key Architectural Decisions', level=2)\n\ndecisions = [\n    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),\n    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),\n    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),\n    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),\n    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),\n]\n\ntable = doc.add_table(rows=1, cols=3)\ntable.style = 'Light Grid Accent 1'\nhdr_cells = table.rows[0].cells\nhdr_cells[0].text = 'Decision'\nhdr_cells[1].text = 'Rationale'\nhdr_cells[2].text = 'Risk Level'\nfor cell in hdr_cells:\n    for paragraph in cell.paragraphs:\n        for run in paragraph.runs:\n            run.font.bold = True\n\nfor decision, rationale, risk in decisions:\n    row_cells = table.add_row().cells\n    row_cells[0].text = decision\n    row_cells[1].text = rationale\n    row_cells[2].text = risk\n\ndoc.add_heading('Critical Numbers', level=2)\nnumbers = [\n    'JJ count per block: ~30-50 Josephson junctions',\n    'Timing budget: ~15-45 ps RSS (within 50 ps target)',\n    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',\n    'Propagation delay: ~30-50 ps through 3-stage binary tree',\n]\nfor num in numbers:\n    doc.add_paragraph(num, style='List Bullet')\n\ndoc.add_heading('Dominant Risks (in order)', level=2)\nrisks = [\n    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',\n    'Routing skew — requires symmetric layout, <5 ps target',\n    'Output driver reliability — DFQ stack >2 mV demonstrated',\n    'Pulse collision loss — negligible at expected rates',\n    'Fabrication yield — independent blocks allow partial-chip operation',\n]\nfor risk in risks:\n    doc.add_paragraph(risk, style='List Number')\n\ndoc.add_heading('Validation Stages Defined', level=2)\nstages = [\n    'Single-block electrical test (no detectors)',\n    'Single-block with SNSPDs',\n    'Multi-block chip (4-8 blocks)',\n    'System integration with photonic quantum computer',\n]\nfor stage in stages:\n    doc.add_paragraph(stage, style='List Bullet')\n\ndoc.add_heading('Bottom Line', level=2)\np = doc.add_paragraph()\np.add_run('This is a well-reasoned minimalist architecture (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-identity-irrelevant + timing-only + low-rate = simple merger tree is optimal. The staged validation plan and risk mitigations are appropriate for a first-generation cryogenic readout IC.')\n\n# Add separator\ndoc.add_paragraph()\ndoc.add_paragraph('─' * 60)\ndoc.add_paragraph()\n\n# Add original content heading\ndoc.add_heading('Original Document Content', level=1)\n\n# Read and append original content\nwith open('extracted_text.txt', 'r') as f:\n    original_text = f.read()\n\n# Split into paragraphs and add\ncurrent_heading = None\nfor line in original_text.split('\\n'):\n    line = line.strip()\n    if not line:\n        continue\n    if line.startswith('SFQ Architecture Report:') or line.startswith('SFQ Architecture Report for'):\n        doc.add_heading(line, level=2)\n    elif line.startswith('per-pixel identification') or line.startswith('7. ') or line.startswith('8. '):\n        doc.add_heading(line, level=2)\n    elif line.startswith('Risk ') or line.startswith('Stage ') or line.startswith('Stage:'):\n        doc.add_heading(line, level=3)\n    elif line.startswith('Mitigation:') or line.startswith('Calibration consists of:'):\n        p = doc.add_paragraph()\n        p.add_run(line[:line.index(':')+1]).bold = True\n        p.add_run(line[line.index(':')+1:])\n    else:\n        doc.add_paragraph(line)\n\n# Save\ndoc.save('SFQ_Architecture_Report_Annotated.docx')\nprint('Saved: SFQ_Architecture_Report_Annotated.docx')\n\"","cwd":"/home/matrix-lite/workspace/native-smoke","summary":"Create annotated DOCX with analysis prepended to original content"}}]}

Output:
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.

    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.

    If you wish to install a non-Debian packaged Python application,
    it may be easiest to use pipx install xyz, which will manage a
    virtual environment for you. Make sure you have pipx installed.

    See /usr/share/doc/python3.13/README.venv for more information.

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.

cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical test (no detectors)',
    'Single-block with SNSPDs',
    'Multi-block chip (4-8 blocks)',
    'System integration with photonic quantum computer',
]
for stage in stages:
    doc.add_paragraph(stage, style='List Bullet')

doc.add_heading('Bottom Line', level=2)
p = doc.add_paragraph()
p.add_run('This is a well-reasoned minimalist architecture (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-identity-irrelevant + timing-only + low-rate = simple merger tree is optimal. The staged validation plan and risk mitigations are appropriate for a first-generation cryogenic readout IC.')

# Add separator
doc.add_paragraph()
doc.add_paragraph('─' * 60)
doc.add_paragraph()

# Add original content heading
doc.add_heading('Original Document Content', level=1)

# Read and append original content
with open('extracted_text.txt', 'r') as f:
    original_text = f.read()

# Split into paragraphs and add
current_heading = None
for line in original_text.split('\n'):
    line = line.strip()
    if not line:
        continue
    if line.startswith('SFQ Architecture Report:') or line.startswith('SFQ Architecture Report for'):
        doc.add_heading(line, level=2)
    elif line.startswith('per-pixel identification') or line.startswith('7. ') or line.startswith('8. '):
        doc.add_heading(line, level=2)
    elif line.startswith('Risk ') or line.startswith('Stage ') or line.startswith('Stage:'):
        doc.add_heading(line, level=3)
    elif line.startswith('Mitigation:') or line.startswith('Calibration consists of:'):
        p = doc.add_paragraph()
        p.add_run(line[:line.index(':')+1]).bold = True
        p.add_run(line[line.index(':')+1:])
    else:
        doc.add_paragraph(line)

# Save
doc.save('SFQ_Architecture_Report_Annotated.docx')
print('Saved: SFQ_Architecture_Report_Annotated.docx')
"

Runtime event: approval granted for apr-1780182130142.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: pip install python-docx.
Command/input: pip install python-docx.
Tool input: {"command": "pip install python-docx", "cwd": "/home/matrix-lite/workspace/native-smoke"}
Agent intent/context: install python-docx for docx generation
Decision by: @gleb:matrix.nvdll.org.
Decision reaction: 👍.
Decision rejection reason: (none).
Original user request: Runtime event: approval granted for apr-1780181977444.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical archi.
Command/input: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical


cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical test (no detectors)',
    'Single-block with SNSPDs',
    'Multi-block chip (4-8 blocks)',
    'System integration with photonic quantum computer',
]
for stage in stages:
    doc.add_paragraph(stage, style='List Bullet')

doc.add_heading('Bottom Line', level=2)
p = doc.add_paragraph()
p.add_run('This is a well-reasoned minimalist architecture (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-identity-irrelevant + timing-only + low-rate = simple merger tree is optimal. The staged validation plan and risk mitigations are appropriate for a first-generation cryogenic readout IC.')

# Add separator
doc.add_paragraph()
doc.add_paragraph('─' * 60)
doc.add_paragraph()

# Add original content heading
doc.add_heading('Original Document Content', level=1)

# Read and append original content
with open('extracted_text.txt', 'r') as f:
    original_text = f.read()

# Split into paragraphs and add
current_heading = None
for line in original_text.split('\n'):
    line = line.strip()
    if not line:
        continue
    if line.startswith('SFQ Architecture Report:') or line.startswith('SFQ Architecture Report for'):
        doc.add_heading(line, level=2)
    elif line.startswith('per-pixel identification') or line.startswith('7. ') or line.startswith('8. '):
        doc.add_heading(line, level=2)
    elif line.startswith('Risk ') or line.startswith('Stage ') or line.startswith('Stage:'):
        doc.add_heading(line, level=3)
    elif line.startswith('Mitigation:') or line.startswith('Calibration consists of:'):
        p = doc.add_paragraph()
        p.add_run(line[:line.index(':')+1]).bold = True
        p.add_run(line[line.index(':')+1:])
    else:
        doc.add_paragraph(line)

# Save
doc.save('SFQ_Architecture_Report_Annotated.docx')
print('Saved: SFQ_Architecture_Report_Annotated.docx')
"

sfq_architecture_report (1).docx

Runtime event: approval granted for apr-1780182130142.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: pip install python-docx.
Command/input: pip install python-docx.
Tool input: {"command": "pip install python-docx", "cwd": "/home/matrix-lite/workspace/native-smoke"}
Agent intent/context: install python-docx for docx generation
Decision by: @gleb:matrix.nvdll.org.
Decision reaction: 👍.
Decision rejection reason: (none).
Original user request: Runtime event: approval granted for apr-1780181977444.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical archi.
Command/input: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical

Create annotated DOCX with analysis prepended to original content


I could not fully verify that request from the tools that actually ran. Missing or failed evidence: file edit/write, command execution. I will not claim that part succeeded.

Tool evidence this turn:
- bash: failed; Traceback (most recent call last):
  File "<string>", line 2, in <module>
    from docx import Document
ModuleNotFoundError: No module named 'docx'

- bash: failed; Traceback (most recent call last):
  File "<string>", line 2, in <module>
    from docx import Document
ModuleNotFoundError: No module named 'docx'

Native identity and behavior

Generic smoke/native worker profile

Native tool use contract

Persistent-chat prompt port placeholder

MCP proxy capability index

Agent skill lifecycle placeholder

Pinned state

Decision state

Curated memory

Session packet candidate

Session-start/restore packet candidate

Current task

Longer-term ideas / experiments

Runtime hints and notices

Operational notices

Recent failures

Persistent context manifest health

Native scoped grants

Provider capability probes

Native session summary

Native hot tail

Bounded keyword retrieval

Vector search / RAG placeholder

Turn packet candidate

Matrix attachment/reply/batch context candidate

Native skill: prompt-governance

Current Matrix event context

Output:
I could not fully verify that request from the tools that actually ran. Missing or failed evidence: file edit/write, command execution. I will not claim that part succeeded.

Tool evidence this turn:
- bash: failed; Traceback (most recent call last):
  File "<string>", line 2, in <module>
    from docx import Document
ModuleNotFoundError: No module named 'docx'

- bash: failed; Traceback (most recent call last):
  File "<string>", line 2, in <module>
    from docx import Document
ModuleNotFoundError: No module named 'docx'

Output:
Traceback (most recent call last):
  File "<string>", line 2, in <module>
    from docx import Document
ModuleNotFoundError: No module named 'docx'

identical native bash retry reused the approved command result from this continuation

Output:
Traceback (most recent call last):
  File "<string>", line 2, in <module>
    from docx import Document
ModuleNotFoundError: No module named 'docx'

Runtime event: approval granted for apr-1780182175206.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical archi.
Command/input: cd /home/matrix-lite/workspace/native-smoke && python3 -c "
from docx import Document
from docx.shared import Pt
from docx.enum.text import WD_ALIGN_PARAGRAPH

# Create new document
doc = Document()

# Add title
title = doc.add_heading('SFQ Architecture Report — Annotated', 0)

# Add analysis section heading
doc.add_heading('Concise Analysis — SFQ Architecture Report', level=1)

# Analysis content
analysis_paras = [
    ('Document Type', 'Technical architecture report for superconducting single-flux-quantum (SFQ) readout of SNSPD arrays'),
    ('Target Application', 'Photonic quantum computing (8-pixel \"superpixel\" groups, timing-only readout)'),
    ('Confidence', 'Verified (extracted directly from source file)'),
]

for label, value in analysis_paras:
    p = doc.add_paragraph()
    p.add_run(f'{label}: ').bold = True
    p.add_run(value)

doc.add_heading('Key Architectural Decisions', level=2)

decisions = [
    ('No per-pixel identity', 'Timing-only requirement simplifies design dramatically', 'Low (explicit assumption)'),
    ('Binary merger tree (8→1)', 'Asynchronous OR function with ~30-50 ps total delay', 'Low'),
    ('No on-chip clock/TDC', 'Room-temperature TDC handles timestamping; saves ~1000s of JJs', 'Low'),
    ('SFQ/DC output per block', 'One coax cable per block; scales to ~50-100 blocks', 'Medium (cable count)'),
    ('No on-chip counter (Gen 1)', 'Multiplicity deferred to warm electronics or A2 upgrade', 'Low'),
]

table = doc.add_table(rows=1, cols=3)
table.style = 'Light Grid Accent 1'
hdr_cells = table.rows[0].cells
hdr_cells[0].text = 'Decision'
hdr_cells[1].text = 'Rationale'
hdr_cells[2].text = 'Risk Level'
for cell in hdr_cells:
    for paragraph in cell.paragraphs:
        for run in paragraph.runs:
            run.font.bold = True

for decision, rationale, risk in decisions:
    row_cells = table.add_row().cells
    row_cells[0].text = decision
    row_cells[1].text = rationale
    row_cells[2].text = risk

doc.add_heading('Critical Numbers', level=2)
numbers = [
    'JJ count per block: ~30-50 Josephson junctions',
    'Timing budget: ~15-45 ps RSS (within 50 ps target)',
    'Merger dead time: ~10-20 ps (multi-hit loss negligible at <10 MHz/block)',
    'Propagation delay: ~30-50 ps through 3-stage binary tree',
]
for num in numbers:
    doc.add_paragraph(num, style='List Bullet')

doc.add_heading('Dominant Risks (in order)', level=2)
risks = [
    'Bias margin collapse — mitigated by operating at ~70% Ic, monitoring',
    'Routing skew — requires symmetric layout, <5 ps target',
    'Output driver reliability — DFQ stack >2 mV demonstrated',
    'Pulse collision loss — negligible at expected rates',
    'Fabrication yield — independent blocks allow partial-chip operation',
]
for risk in risks:
    doc.add_paragraph(risk, style='List Number')

doc.add_heading('Validation Stages Defined', level=2)
stages = [
    'Single-block electrical test (no detectors)',
    'Single-block with SNSPDs',
    'Multi-block chip (4-8 blocks)',
    'System integration with photonic quantum computer',
]
for stage in stages:
    doc.add_paragraph(stage, style='List Bullet')

doc.add_heading('Bottom Line', level=2)
p = doc.add_paragraph()
p.add_run('This is a well-reasoned minimalist architecture (A1) that explicitly rejects more complex alternatives (A2-A5) based on requirements. The author correctly identifies that pixel-i


sfq_architecture_report (1).docx

Load the relevant skill if useful, inspect this
     file, prepend your concise analysis to the file and send the result back as a modified docx file. Report on any skills or tools used

/home/matrix-lite/workspace/native-smoke: python3 -c "import docx; print('python-docx available')" 2>&1 || echo "not installed"


Native identity and behavior

Generic smoke/native worker profile

Native tool use contract

Persistent-chat prompt port placeholder

MCP proxy capability index

Agent skill lifecycle placeholder

Pinned state

Decision state

Curated memory

Session packet candidate

Session-start/restore packet candidate

Current task

Longer-term ideas / experiments

Runtime hints and notices

Operational notices

Recent failures

Persistent context manifest health

Native scoped grants

Provider capability probes

Native session summary

Native hot tail

Bounded keyword retrieval

Vector search / RAG placeholder

Turn packet candidate

Matrix attachment/reply/batch context candidate

Native skill: prompt-governance

Native skill: senior-architect

Current Matrix event context

Output:
I need to install python-docx first, then create the annotated docx file. Requesting approval for the installation:

{"tool_calls":[{"name":"bash","args":{"command":"pip install python-docx","cwd":"/home/matrix-lite/workspace/native-smoke","summary":"install python-docx for docx generation"}}]}

Output:
Traceback (most recent call last):
  File "<string>", line 1, in <module>
    import docx; print('python-docx available')
    ^^^^^^^^^^^
ModuleNotFoundError: No module named 'docx'
not installed

Summary: install python-docx for docx generation

Runtime event: approval granted for apr-1780209114150.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: python3 -c "import docx; print('python-docx available')" 2>&1 || echo "not installed".
Command/input: python3 -c "import docx; print('python-docx available')" 2>&1 || echo "not installed".
Tool input: {"command": "python3 -c \"import docx; print('python-docx available')\" 2>&1 || echo \"not installed\"", "cwd": "/home/matrix-lite/workspace/native-smoke"}
Agent intent/context: check if python-docx is installed
Decision by: @gleb:matrix.nvdll.org.
Decision reaction: 👍.
Decision rejection reason: (none).
Original user request: Load the relevant skill if useful, inspect this
     file, prepend your concise analysis to the file and send the result back as a modified docx file. Report on any skills or tools used
Original attachment metadata:
{"body": "sfq_architecture_report (1).docx", "download": {"event_id": "$FA2pUTFIxD7RA7aXth6PAf0xkKMyzQKSpSo37Gqy9e4", "filename": "sfq_architecture_report _1_.docx", "mime": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "mxc_url": "mxc://matrix.nvdll.org/Cu8TjberFGPIIl2IPq3Tbn3aIw63t4Hi", "path": "/home/matrix-lite/state/inbox/FA2pUTFIxD7RA7aXth6PAf0xkKMyzQKSpSo37Gqy9e4/sfq_architecture_report _1_.docx", "size": 30115}, "encrypted": false, "filename": null, "local_path": "/home/matrix-lite/state/inbox/FA2pUTFIxD7RA7aXth6PAf0xkKMyzQKSpSo37Gqy9e4/sfq_architecture_report _1_.docx", "mime": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "msgtype": "m.file", "mxc_url": "mxc://matrix.nvdll.org/Cu8TjberFGPIIl2IPq3Tbn3aIw63t4Hi", "size": 30115}
Runtime metadata: the requested approval was granted. Continue using the granted scope/action; if a tool still refuses it, explain that runtime permission integration failed instead of requesting the same approval again.

Continue the original task now if possible. If permission was denied, explain the outcome and propose a safer alternative.


sfq_architecture_report (1).docx

Runtime event: approval granted for apr-1780209114150.
Action: native_tool:bash.
Scope: /home/matrix-lite/workspace/native-smoke: python3 -c "import docx; print('python-docx available')" 2>&1 || echo "not installed".
Command/input: python3 -c "import docx; print('python-docx available')" 2>&1 || echo "not installed".
Tool input: {"command": "python3 -c \"import docx; print('python-docx available')\" 2>&1 || echo \"not installed\"", "cwd": "/home/matrix-lite/workspace/native-smoke"}
Agent intent/context: check if python-docx is installed
Decision by: @gleb:matrix.nvdll.org.
Decision reaction: 👍.
Decision rejection reason: (none).
Original user request: Load the relevant skill if useful, inspect this
     file, prepend your concise analysis to the file and send the result back as a modified docx file. Report on any skills or tools used
Original attachment metadata:
{"body": "sfq_architecture_report (1).docx", "download": {"event_id": "$FA2pUTFIxD7RA7aXth6PAf0xkKMyzQKSpSo37Gqy9e4", "filename": "sfq_architecture_report _1_.docx", "mime": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "mxc_url": "mxc://matrix.nvdll.org/Cu8TjberFGPIIl2IPq3Tbn3aIw63t4Hi", "path": "/home/matrix-lite/state/inbox/FA2pUTFIxD7RA7aXth6PAf0xkKMyzQKSpSo37Gqy9e4/sfq_architecture_report _1_.docx", "size": 30115}, "encrypted": false, "filename": null, "local_path": "/home/matrix-lite/state/inbox/FA2pUTFIxD7RA7aXth6PAf0xkKMyzQKSpSo37Gqy9e4/sfq_architecture_report _1_.docx", "mime": "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "msgtype": "m.file", "mxc_url": "mxc://matrix.nvdll.org/Cu8TjberFGPIIl2IPq3Tbn3aIw63t4Hi", "size": 30115}
Runtime metadata: the requested approval was granted. Continue using the granted scope/action; if a tool still refuses it, explain that runtime permission integration failed instead of requesting the same approval again.

Continue the original task now if possible. If permission was denied, explain the outcome and propose a safer alternative.