chore: clean hydrotech-beam syncthing conflicts and add new docs

- Remove all .sync-conflict-* files
- Remove temp _temp_part_properties.json files
- Add USER_GUIDE.md
- Add dashboard docs (Executive, Technical, Operations, Master Plan)
- Add playbooks (DOE, NX_REAL_RUN, SYNCTHING_RECOVERY)
- Update iteration results

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

projects/.stfolder/syncthing-folder-a62d30.txt

@@ -0,0 +1,5 @@
+# This directory is a Syncthing folder marker.
+# Do not delete.
+
+folderID: sqr2v-3dhfn
+created: 2026-02-14T14:17:29-05:00

projects/hydrotech-beam/README.md

@@ -61,6 +61,10 @@ hydrotech-beam/
 - [CONTEXT.md](CONTEXT.md) — Full intake data
 - [BREAKDOWN.md](BREAKDOWN.md) — Tech Lead's technical analysis
 - [DECISIONS.md](DECISIONS.md) — All project decisions
+- [USER_GUIDE.md](USER_GUIDE.md) — Living user guide (operators + bots)
+- [playbooks/DOE.md](playbooks/DOE.md) — DOE execution playbook
+- [playbooks/NX_REAL_RUN.md](playbooks/NX_REAL_RUN.md) — Real NX run checklist
+- [playbooks/SYNCTHING_RECOVERY.md](playbooks/SYNCTHING_RECOVERY.md) — Sync recovery and cleanup
 - [kb/_index.md](kb/_index.md) — Knowledge base overview
 
 ## Team

projects/hydrotech-beam/USER_GUIDE.md

@@ -0,0 +1,65 @@
+# Hydrotech Beam — User Guide (Living)
+
+> Audience: Antoine, future users, and Atomizer agents/bots.
+> Status: Living document — update after each meaningful run/decision.
+
+## 1) Purpose
+This guide explains how to run Hydrotech Beam studies safely and reproducibly, how to interpret outputs, and how to avoid common pitfalls (backend mix-up, sync conflicts, stale results).
+
+## 2) Quick Start
+
+### Study folder
+`C:\Users\antoi\Atomizer\Projects\hydrotech-beam\studies\01_doe_landscape`
+
+### Core command (real NX run)
+```powershell
+python .\run_doe.py --backend nxopen --model-dir "<PATH_TO_NX_MODELS>" --clean --study-name hydrotech_beam_doe_phase1_real
+```
+
+### Dev/testing command (fake physics)
+```powershell
+python .\run_doe.py --backend stub --clean --study-name hydrotech_beam_doe_phase1_stub
+```
+
+⚠️ `stub` is synthetic. Do **not** use stub outputs for engineering decisions.
+
+## 3) Critical Rules
+1. Always specify `--backend` explicitly (never rely on defaults).
+2. Before a decision review, confirm whether results are from `nxopen` or `stub`.
+3. Keep result artifacts clean (archive conflicts, avoid mixed appended runs unless intentional).
+4. After every run, write a run log entry (template below).
+
+## 4) Run Log Template (required)
+Copy this into `DECISIONS.md` or project log after every run:
+
+```md
+## Run Record — YYYY-MM-DD HH:MM
+- Operator:
+- Command:
+- Backend: nxopen | stub
+- Model dir:
+- Study name:
+- Constraints: displacement=__ mm, stress=__ MPa
+- Result summary: total=__, solved=__, geo_infeasible=__, feasible=__
+- Gate check: PASS | FAIL
+- Notes/issues:
+- Next action:
+```
+
+## 5) Playbooks
+- `playbooks/NX_REAL_RUN.md` — clean real run checklist + validation
+- `playbooks/DOE.md` — DOE execution and gate rules
+- `playbooks/SYNCTHING_RECOVERY.md` — sync conflict and stale data recovery
+
+## 6) Current Known Pitfalls
+- `run_doe.py` default backend is `stub` unless overridden.
+- Mixing old + new runs in same DB/file can produce misleading totals.
+- Syncthing conflict files (`*.sync-conflict-*`) can silently fork truth.
+- NX expression names must match exactly (e.g., typo-sensitive names in model).
+
+## 7) Ownership
+- CEO (Antoine): go/no-go and final technical decisions.
+- Manager: orchestration + process + documentation enforcement.
+- Study Builder: run scripts and settings correctness.
+- Tech Lead: engineering validity of constraints and interpretation.
+- Auditor: quality gate before external conclusions.

projects/hydrotech-beam/dashboard/EXECUTIVE_DASHBOARD.md

@@ -0,0 +1,33 @@
+# Hydrotech Beam — Executive Dashboard
+
+Last updated (UTC): 2026-02-14T22:24:29
+Source: `studies/01_doe_landscape/results/doe_summary.json` + `doe_results.csv`
+
+## CEO 60-second view
+- **Phase:** DOE Phase 1 (LHS)
+- **Gate status:** ❌ **BLOCKED** (Phase 1 → Phase 2)
+- **Total trials:** 51
+- **Solved:** 39 (**76.5%**, below 80% gate)
+- **Geo-infeasible:** 12
+- **Fully feasible designs:** 0 (gate requires ≥5)
+
+## Top signals
+- ✅ Mass extraction now looks real (no NaN in solved rows)
+- ✅ Syncthing cleanup completed (active conflict files archived)
+- ⚠️ Displacement constraint is the blocker (0/39 displacement-feasible at 10 mm)
+- ⚠️ DOE→TPE gate cannot pass with current limits/bounds
+
+## Decision hotlist (CEO)
+1. **Approve next constraint strategy**:
+   - Option A (recommended): exploratory rerun at **20 mm** displacement
+   - Option B: keep 10 mm and tighten design bounds for stiffness
+2. **Approve TPE entry rule** (with strict gate or conditional gate)
+
+## Recommendation (current)
+Proceed with **Option A** for exploration (20 mm), then tighten toward 10 mm in staged optimization.
+
+## KPI snapshot
+- Solve success rate: **76.5%**
+- Feasibility rate (full): **0.0%**
+- Best solved mass: **686.289 kg** (not fully feasible)
+- Best trial ID by mass: **26**

projects/hydrotech-beam/dashboard/MASTER_PLAN.md

@@ -0,0 +1,194 @@
+# Hydrotech Beam — Dashboard & Reporting Master Plan (Multi-LLM Synthesis)
+
+## Purpose
+Give Antoine a single, reliable command view of project health while preserving full technical depth and operational traceability.
+
+This plan synthesizes recommendations from:
+- Codex 5.3 (execution architecture + contracts + KPI gates)
+- Opus 4.6 (PKM-first, markdown-native, low-overhead governance)
+- Gemini Pro (clear role-based dashboards + event-stream discipline)
+
+---
+
+## North-Star Architecture (Hybrid, future-proof)
+
+### Phase 1 default (now): **PKM-native dashboards in markdown**
+- No new infrastructure required
+- Fastest path to value
+- Agent-native read/write and auditability
+
+### Phase 2+ extension: **optional web UI over same contracts**
+- If/when needed for richer visual analytics
+- No rewrite: UI reads the same structured contracts and event logs
+
+**Key principle:** Data contracts first, presentation second.
+
+---
+
+## 1) Information Architecture
+
+## A. Project-specific (lives under `projects/hydrotech-beam/`)
+- `dashboard/` — generated dashboard markdown snapshots
+- `reports/` — run/phase/executive reports
+- `runs/` — run manifests and execution metadata
+- `decisions/` — append-only decision records
+- `incidents/` — sync/solver/process incident records
+- `playbooks/` — project execution procedures
+
+## B. Foundational (lives under `docs/`)
+- `docs/guides/` — reusable dashboard/report standards
+- `docs/reference/data-contracts/` — versioned schema definitions
+- `docs/protocols/` — gates, QA, governance rules
+- `docs/templates/` — report and dashboard templates
+
+---
+
+## 2) Dashboard Modules (3-tier)
+
+## A. Executive Dashboard (60-second scan)
+- Project status (RAG + phase + blockers)
+- Milestone confidence and slip risk
+- Decision hotlist (items needing CEO approval)
+- Top risks + mitigation owners
+- Gate state (Pass / Conditional / Fail)
+
+## B. Technical Dashboard
+- DOE/TPE performance (success, feasible points, convergence)
+- Constraint panel (disp/stress/geo violations)
+- Data quality checks (NaN, stub-vs-nxopen, stale/mixed runs)
+- Traceability (requirement → run → result → decision)
+
+## C. Operations Dashboard
+- Queue and throughput (WIP, cycle time, backlog)
+- Blocker tracker + MTTR
+- Review SLA status
+- Syncthing/data integrity panel
+- Documentation freshness/compliance
+
+---
+
+## 3) Data Contracts (mandatory)
+
+All dashboard/report content must come from structured records with lineage.
+
+Required contracts (v1):
+1. `run_manifest.v1.json`
+2. `trial_result.v1.json`
+3. `study_summary.v1.json`
+4. `decision_record.v1.json`
+5. `risk_record.v1.json`
+6. `gate_evaluation.v1.json`
+7. `incident_record.v1.json`
+
+Required fields in every record:
+- `schema_version`, `project_id`, `run_id` (if applicable)
+- `timestamp_utc`, `owner`, `source_file`, `source_hash`
+
+Ingestion rules:
+- Reject invalid schema
+- Keep append-only history for decisions/gates/incidents
+- Nightly integrity check + drift report
+
+---
+
+## 4) Report System
+
+## A. Daily Ops Brief (auto)
+- Blockers, failures, overdue reviews, data integrity warnings
+
+## B. Weekly Executive Brief (auto + curated)
+- Milestone confidence, top risks, decision asks, KPI trend deltas
+
+## C. Gate Review Pack (formal)
+- Criteria checklist, evidence index, exceptions, sign-offs
+
+## D. Technical Deep Dive (on-demand)
+- Methods, assumptions, sensitivity, reproducibility evidence
+
+Render path:
+- Markdown source of truth
+- Optional HTML/PDF exports from templates
+- Immutable snapshot ID per issued report
+
+---
+
+## 5) Governance & Ownership
+
+- **Manager (owner):** documentation architecture, dashboard governance, release quality
+- **Tech Lead:** technical KPI definitions, thresholds, validation logic
+- **Study Builder:** data pipeline and generators
+- **Optimizer:** analytics logic and recommendation layer
+- **Auditor:** contract compliance + gate QA
+
+Rule enforced:
+- Project-specific content in `projects/...`
+- Foundational content in `docs/...`
+
+---
+
+## 6) KPI Set + Gate Rules (starter)
+
+## KPI starter set
+- Solve success rate
+- Full feasibility rate
+- Best feasible mass
+- Constraint violation percentiles (disp/stress)
+- Data integrity score
+- Decision cycle time
+- Blocker MTTR
+- Documentation freshness lag
+
+## Gate policy
+- Gate states: `PASS` | `CONDITIONAL_PASS` | `FAIL`
+- Conditional pass requires named owner + due date + risk acceptance
+- Hard fail blocks progression
+
+DOE→TPE gate (initial):
+- Solve success ≥ 80%
+- Feasible points ≥ 5
+- Data integrity score ≥ 95%
+
+---
+
+## 7) Rollout Plan
+
+## Phase 0 (48h)
+- Contract definitions + KPI dictionary
+- Dashboard markdown templates
+- Run manifest/logger enabled
+
+## Phase 1 (1 week)
+- Live executive + operations dashboards
+- Daily ops brief + weekly executive brief
+
+## Phase 2 (2–3 weeks)
+- Technical dashboard depth (DOE/TPE analytics, traceability)
+- Gate review packs with evidence linking
+
+## Phase 3 (ongoing)
+- Optional web UI layer
+- Predictive risk signals and anomaly detection
+
+---
+
+## 8) Risks & Mitigations
+
+1. Backend confusion (stub vs nxopen)
+- Mitigation: manifest hard-check + dashboard alert
+
+2. Syncthing conflicts / stale truth
+- Mitigation: conflict detector + incident workflow
+
+3. Schema drift
+- Mitigation: versioned contracts + validator + auditor checks
+
+4. Dashboard sprawl
+- Mitigation: role-based views + KPI change control
+
+5. Documentation decay
+- Mitigation: freshness SLA + automated stale flags
+
+---
+
+## Decision
+Proceed with **PKM-native dashboard/report system now**, built on strict contracts and governance, with a clean upgrade path to richer UI later.

projects/hydrotech-beam/dashboard/OPERATIONS_DASHBOARD.md

@@ -0,0 +1,43 @@
+# Hydrotech Beam — Operations Dashboard
+
+Last updated (UTC): 2026-02-14T22:24:29
+
+## Pipeline status
+- Study folder sync: ✅ healthy (latest artifacts visible)
+- Conflict artifacts: ✅ archived under `results/archive_conflicts_*`
+- Clean rerun archive: ✅ `results/archive_before_clean_rerun_*`
+
+## Artifact integrity
+Active result files present:
+- `doe_results.csv`
+- `doe_summary.json`
+- `doe_run.log`
+- `history.csv`
+- `history.db`
+- `optuna_study.db`
+
+## Process compliance
+- Backend clarity rule: must always run with explicit `--backend`
+- Documentation boundary rule: enforced
+  - Project-specific docs → `projects/...`
+  - Foundational standards → `docs/...`
+- New standards created:
+  - `projects/hydrotech-beam/dashboard/MASTER_PLAN.md`
+  - `docs/guides/PKM_DASHBOARD_STANDARD.md`
+  - `docs/guides/DOCUMENTATION_BOUNDARIES.md`
+
+## Current blockers
+1. Phase gate blocked (insufficient feasible designs)
+2. Need CEO decision on constraint path for next DOE/TPE sequence
+
+## Next operational actions (owner)
+1. **Manager:** keep dashboards refreshed after every run
+2. **Tech Lead:** finalize recommended constraint staging
+3. **Study Builder:** prep reproducible command set for next run
+4. **Optimizer:** define TPE launch criteria + seed strategy
+5. **Auditor:** enforce gate criteria and data-contract checks
+
+## SLA targets (initial)
+- Dashboard freshness: ≤ 1h after major run
+- Run log compliance: ≥ 95%
+- Decision backlog age: ≤ 48h

projects/hydrotech-beam/dashboard/TECHNICAL_DASHBOARD.md

@@ -0,0 +1,43 @@
+# Hydrotech Beam — Technical Dashboard
+
+Last updated (UTC): 2026-02-14T22:24:29
+Source: `studies/01_doe_landscape/results/doe_results.csv`
+
+## Study health
+- Trials: 51
+- Solved: 39
+- Geo-infeasible: 12
+- Solve failures: 0
+- Full-feasible: 0
+
+## Constraint status
+- Displacement limit: **10.0 mm**
+- Stress limit: **130.0 MPa**
+
+Observed solved ranges:
+- Tip displacement: **11.7788 → 39.4912 mm**
+- Max von Mises stress: **75.0116 → 398.4295 MPa**
+
+Feasibility counts:
+- Displacement feasible: **0**
+- Stress feasible: **23**
+- Fully feasible: **0**
+
+## Performance / runtime
+- Solve time range (solved): **12.42 s → 59.59 s**
+- Pattern indicates real NX execution (non-stub timing)
+
+## Data quality checks
+- Mass NaN (solved): **0** ✅
+- Penalty mass (99999): **12** (geo infeasible trials) ✅ expected
+- Mixed appended run state: **cleared** (current clean 51-trial set)
+
+## Technical interpretation
+- Current geometry space + 10 mm displacement limit appears too restrictive.
+- Stress limit is partially satisfiable (23/39), so the primary bottleneck is stiffness/displacement.
+
+## Recommended technical next actions
+1. Run a controlled DOE with displacement limit = 20 mm (exploration mode)
+2. Identify near-feasible stiff regions
+3. Launch TPE with penalty + staged tightening toward 10 mm
+4. Re-run gate check with updated feasible counts

projects/hydrotech-beam/kb/_history.sync-conflict-20260209-202842-VBCUD7Z.md

@@ -1,22 +0,0 @@
-# Knowledge Base History — Hydrotech Beam
-
-All modifications tracked by generation.
-
----
-
-## Gen 001 — 2026-02-09 — Initial KB
-
-**Source:** Project intake (CONTEXT.md) + Technical Lead breakdown (BREAKDOWN.md)
-**Author:** Manager 🎯
-
-**Created:**
-- `components/sandwich-beam.md` — initial component file from intake data
-- `materials/steel-aisi.md` — material placeholder
-- `fea/models/sol101-static.md` — FEA model placeholder from breakdown
-- `dev/gen-001.md` — generation document
-
-**Key findings from breakdown:**
-- Baseline FAILS displacement constraint (22 mm vs 10 mm limit)
-- Feasible region may be narrow — stiffness and mass compete
-- Sandwich effect (core thickness) is the primary stiffness lever
-- 9 gaps identified requiring CEO input before proceeding

projects/hydrotech-beam/kb/_index.sync-conflict-20260209-202842-VBCUD7Z.md

@@ -1,47 +0,0 @@
-# Knowledge Base — Hydrotech Beam
-
-**Project:** Hydrotech Beam Structural Optimization
-**Generation:** 001
-**Last updated:** 2026-02-09
-
----
-
-## Overview
-
-Sandwich I-beam optimization for a test fixture. Steel construction with lightening holes in the web. Goal: reduce mass from ~974 kg while meeting displacement (≤ 10 mm) and stress (≤ 130 MPa) constraints.
-
-## Components
-
-| Component | File | Status |
-|-----------|------|--------|
-| Sandwich Beam | [sandwich-beam.md](components/sandwich-beam.md) | Initial |
-
-## Materials
-
-| Material | File | Status |
-|----------|------|--------|
-| Steel (AISI) | [steel-aisi.md](materials/steel-aisi.md) | Initial |
-
-## FEA
-
-| Model | File | Status |
-|-------|------|--------|
-| Static Analysis (SOL 101) | [fea/models/sol101-static.md](fea/models/sol101-static.md) | Pending gap resolution |
-
-## Generations
-
-| Gen | Date | Summary |
-|-----|------|---------|
-| 001 | 2026-02-09 | Initial KB from intake + technical breakdown |
-
-## Open Tasks
-
-- ❓ G1: Beam length and support conditions
-- ❓ G2: Loading definition (point? distributed? self-weight?)
-- ❓ G3: Displacement measurement location and DOF
-- ❓ G4: Stress constraint scope (whole model? exclude supports?)
-- ❓ G5: Geometric feasibility of hole patterns at extremes
-- ❓ G6: Result sensors in Beam_sim1.sim
-- ❓ G7: NX parametric rebuild reliability across full range
-- ❓ G8: Mesh type, density, convergence status
-- ❓ G9: 130 MPa stress limit basis (yield? safety factor?)

projects/hydrotech-beam/kb/components/sandwich-beam.sync-conflict-20260209-202842-VBCUD7Z.md

@@ -1,52 +0,0 @@
-# Sandwich Beam
-
-**Type:** Primary structural component
-**Material:** Steel (AISI) — see [steel-aisi.md](../materials/steel-aisi.md)
-**Status:** Baseline documented, optimization pending
-
----
-
-## Description
-
-Sandwich I-beam serving as primary load-bearing member in a test fixture assembly. Cross-section features a core layer flanked by face sheets on top and bottom flanges. Web contains a pattern of lightening holes (circular cutouts) to reduce mass.
-
-## Specifications
-
-| Parameter | Value | Units | Source |
-|-----------|-------|-------|--------|
-| Mass (baseline) | ~974 | kg | NX expression `p173` |
-| Tip displacement (baseline) | ~22 | mm | SOL 101 result |
-| Half-core thickness | 20 (baseline) | mm | DV range: 10–40 |
-| Face thickness | 20 (baseline) | mm | DV range: 10–40 |
-| Hole diameter | 300 (baseline) | mm | DV range: 150–450 |
-| Hole count | 10 (baseline) | — | DV range: 5–15 (integer) |
-| Beam length | ❓ TBD | mm | Gap G1 |
-| Support conditions | ❓ TBD | — | Gap G1 |
-
-## Structural Behavior
-
-*From Technical Breakdown (Gen 001):*
-
-The beam is **bending-dominated**:
-
-| Behavior | Governing Parameters | Notes |
-|----------|---------------------|-------|
-| Bending stiffness (EI) | Face thickness, core thickness | Faces carry bending stress, core carries shear. Stiffness scales ~quadratically with distance from neutral axis |
-| Mass | All four variables | Core and face add material; holes remove material from web |
-| Stress concentrations | Hole diameter, hole spacing | Larger holes → higher SCF at edges. Closely spaced holes can interact |
-| Shear capacity | Core thickness, hole count, diameter | Holes reduce shear-carrying area |
-
-## Design Variable Interactions
-
-1. **Core × Face** — classic sandwich interaction. Optimal stiffness balances core depth (lever arm) vs face material (bending resistance)
-2. **Hole diameter × Hole count** — both remove web material. Large + many could leave insufficient ligament width
-3. **Face × Hole diameter** — thicker faces reduce nominal stress, allowing larger holes
-4. **Core × Hole diameter** — core thickness determines web height, constrains max feasible hole diameter
-
-## Key Risk
-
-> ⚠️ Baseline FAILS displacement constraint (22 mm vs 10 mm target). Optimizer must increase stiffness by >50% while reducing mass. Feasible region may be tight.
-
-## History
-
-- **Gen 001** (2026-02-09): Initial documentation from intake + technical breakdown

projects/hydrotech-beam/kb/dev/gen-001.sync-conflict-20260209-202842-VBCUD7Z.md

@@ -1,58 +0,0 @@
-# Gen 001 — Project Intake + Technical Breakdown
-
-**Date:** 2026-02-09
-**Sources:** CEO intake in #project-hydrotech-beam, Technical Lead analysis
-**Author:** Manager 🎯
-
----
-
-## What Happened
-
-1. Antoine submitted the Hydrotech beam optimization request via #project-hydrotech-beam
-2. Manager created project folder and CONTEXT.md from intake data
-3. Technical Lead produced a full technical breakdown (BREAKDOWN.md)
-4. Manager and CEO agreed on project structure (KB-integrated layout)
-
-## Key Findings
-
-### From Intake
-- Sandwich I-beam, steel, with lightening holes in web
-- 4 design variables (3 continuous + 1 integer)
-- Current design: ~974 kg, ~22 mm tip displacement
-- Targets: minimize mass, displacement ≤ 10 mm, stress ≤ 130 MPa
-
-### From Technical Breakdown
-- **Critical:** Baseline already violates displacement constraint (22 mm vs 10 mm)
-- Single-objective formulation recommended (minimize mass, constrain the rest)
-- Two-phase approach: DoE (40–50 trials) then TPE (60–100 trials)
-- Significant variable interactions expected (sandwich theory, hole interactions)
-- 9 gaps identified needing CEO input
-- Overall risk: MEDIUM-HIGH (feasible region may be tight or empty)
-
-## KB Entries Created
-
-- `components/sandwich-beam.md` — component file with specs, behavior, interactions
-- `materials/steel-aisi.md` — placeholder, needs NX model data
-- `fea/models/sol101-static.md` — solver setup, pending gap resolution
-
-## Decisions Made
-
-- DEC-HB-004: KB-integrated project structure (Approved)
-- DEC-HB-005: No Notion, Gitea + .md only (Approved)
-- DEC-HB-006: KB skill extension pattern, no fork (Approved)
-
-## Open Items
-
-9 gaps pending CEO input (see [_index.md](../_index.md)):
-- G1–G2: Geometry and loading (most critical)
-- G3–G4: Result extraction specifics
-- G5: Geometric feasibility at extremes
-- G6–G8: NX model details
-- G9: Stress allowable basis
-
-## Next Steps
-
-1. Resolve gaps G1–G9 with Antoine
-2. Upload reference models to `models/`
-3. Begin NX model introspection
-4. Set up first study (DoE)

projects/hydrotech-beam/kb/fea/models/sol101-static.sync-conflict-20260209-202842-VBCUD7Z.md

@@ -1,46 +0,0 @@
-# SOL 101 — Static Analysis
-
-**Simulation:** Beam_sim1.sim
-**Solver:** NX Nastran SOL 101 (Linear Static)
-**Status:** Pending gap resolution
-
----
-
-## Setup
-
-| Item | Value | Notes |
-|------|-------|-------|
-| Solution type | SOL 101 (Linear Static) | Appropriate for this problem |
-| Element type | ❓ TBD | Gap G8: CQUAD4/CQUAD8 (shell) or CTETRA/CHEXA (solid)? |
-| Mesh density | ❓ TBD | Gap G8: convergence checked? |
-| Loading | ❓ TBD | Gap G2: point load? distributed? self-weight? |
-| BCs | ❓ TBD | Gap G1: cantilever? simply-supported? |
-
-## Result Extraction
-
-| Output | Method | Expression/Sensor | Status |
-|--------|--------|-------------------|--------|
-| Mass | NX expression | `p173` | ✅ Known |
-| Tip displacement | ❓ Sensor or .f06 parse | TBD | Gap G3, G6 |
-| Von Mises stress | ❓ Sensor or .f06 parse | TBD | Gap G4, G6 |
-
-## Solver Considerations
-
-*From Technical Breakdown:*
-
-- **Linear assumption:** 22 mm displacement on likely 2+ m beam → L/δ probably OK. Verify.
-- **Mesh sensitivity:** Stress at hole edges is mesh-dependent. Need convergence check (Gap G8).
-- **Mesh morphing vs remesh:** Parametric NX models typically remesh on update. Need to confirm behavior across DV range (Gap G7).
-- **Runtime estimate:** Single beam, ~10K–100K DOF → probably seconds to low minutes per evaluation.
-
-## Validation Checklist
-
-- [ ] Baseline mass matches NX expression `p173`
-- [ ] Baseline displacement matches reported ~22 mm
-- [ ] Mesh convergence verified at baseline
-- [ ] Mesh quality acceptable at DV range extremes
-- [ ] Model rebuilds cleanly at all 4 corners of design space
-
-## History
-
-- **Gen 001** (2026-02-09): Initial documentation from technical breakdown. All solver details pending gap resolution.

projects/hydrotech-beam/kb/materials/steel-aisi.sync-conflict-20260209-202842-VBCUD7Z.md

@@ -1,26 +0,0 @@
-# Steel (AISI)
-
-**Status:** Placeholder — needs full material card details
-
----
-
-## Properties
-
-| Property | Value | Units | Source |
-|----------|-------|-------|--------|
-| Standard | AISI | — | Intake |
-| Grade | ❓ TBD | — | Need from NX model |
-| Yield strength | ❓ TBD | MPa | — |
-| E (Young's modulus) | ❓ TBD | GPa | — |
-| Density | ❓ TBD | kg/m³ | — |
-| Poisson's ratio | ❓ TBD | — | — |
-
-## Notes
-
-- Stress allowable of 130 MPa was given as constraint — need to confirm basis (Gap G9)
-- If yield is ~250 MPa, then 130 MPa implies SF ≈ 1.9 — conservative
-- Material card should be extracted from NX model during introspection
-
-## History
-
-- **Gen 001** (2026-02-09): Placeholder from intake — "Steel (AISI)" is all we have

projects/hydrotech-beam/models/_temp_mass.txt

@@ -1 +1 @@
-p173=1343.5034206648418
+1343.5034206648418

projects/hydrotech-beam/playbooks/DOE.md

@@ -0,0 +1,39 @@
+# Playbook — DOE (Phase 1 Landscape)
+
+## Scope
+Design of Experiments for Hydrotech Beam: baseline + LHS samples to map design space.
+
+## Standard flow
+1. Prepare clean state (archive previous results if needed)
+2. Run DOE with explicit backend
+3. Validate outputs
+4. Evaluate gate criteria
+5. Decide next phase (rerun bounds/constraints or move to TPE)
+
+## Commands
+### Real engineering DOE
+```powershell
+python .\run_doe.py --backend nxopen --model-dir "<PATH_TO_NX_MODELS>" --clean --study-name hydrotech_beam_doe_phase1_real
+```
+
+### Debug DOE only (synthetic)
+```powershell
+python .\run_doe.py --backend stub --clean --study-name hydrotech_beam_doe_phase1_stub
+```
+
+## Interpretation checklist
+- `geo_infeasible` high: geometry bounds/checks may be too broad or too strict
+- `fully_feasible = 0`: constraints may be too strict for current design space
+- Very low runtime and suspiciously smooth outputs: likely stub execution
+
+## Decision branch
+- If gate passed: proceed to TPE seeded by feasible points
+- If gate failed:
+  - adjust constraints and/or DV bounds
+  - rerun clean DOE
+
+## Documentation requirement
+After each DOE run, update:
+- run record
+- decision and rationale
+- next action owner

projects/hydrotech-beam/playbooks/NX_REAL_RUN.md

@@ -0,0 +1,38 @@
+# Playbook — NX Real Run (Hydrotech Beam)
+
+## Objective
+Run a **real** DOE using NX/Simcenter (not stub), with clean artifacts and traceability.
+
+## Pre-Run Checklist
+- [ ] In study folder: `...\studies\01_doe_landscape`
+- [ ] Model directory contains expected `.sim`, `.fem`, `.prt`
+- [ ] Syncthing healthy on both ends (no major errors)
+- [ ] No unintended `*.sync-conflict-*` in active results root
+- [ ] Command prepared with explicit `--backend nxopen`
+
+## Recommended command
+```powershell
+python .\run_doe.py --backend nxopen --model-dir "<PATH_TO_NX_MODELS>" --clean --study-name hydrotech_beam_doe_phase1_real
+```
+
+## During run — sanity checks
+- Runtime per solved trial should be non-trivial (not near-zero for all trials).
+- Log should indicate NX solve flow, not stub messages.
+- Iteration outputs should be created.
+
+## Post-run validation
+1. Check `results/doe_summary.json`
+2. Check `results/doe_results.csv`
+3. Verify:
+   - trial count expected (typically 51 for baseline + 50 LHS)
+   - solved/failed counts make sense
+   - mass values are numeric for solved trials
+   - no obvious synthetic patterns indicating stub run
+
+## Quality gate reminder
+Phase 1 gate (current):
+- ≥5 feasible points
+- ≥80% solve success
+
+## Mandatory logging
+Record the run in project docs using the run log template from `USER_GUIDE.md`.

projects/hydrotech-beam/playbooks/SYNCTHING_RECOVERY.md

@@ -0,0 +1,38 @@
+# Playbook — Syncthing Recovery (Hydrotech Beam)
+
+## Symptoms
+- Latest run not visible on other side
+- Old timestamps persist remotely
+- `*.sync-conflict-*` files appear in `results/`
+
+## Recovery steps
+1. Confirm both sides point to the same folder path
+2. Rescan folder in Syncthing GUI
+3. Pause/resume folder if stale
+4. Restart Syncthing if needed
+5. Archive conflicts from active results root
+
+## Conflict archive snippet (PowerShell)
+```powershell
+$ts = Get-Date -Format "yyyyMMdd_HHmmss"
+$archive = ".\results\archive_conflicts_$ts"
+New-Item -ItemType Directory -Path $archive -Force | Out-Null
+Get-ChildItem .\results -File -Filter "*.sync-conflict-*" | Move-Item -Destination $archive
+```
+
+## Clean rerun prep snippet (PowerShell)
+```powershell
+$ts = Get-Date -Format "yyyyMMdd_HHmmss"
+$old = ".\results\archive_before_clean_rerun_$ts"
+New-Item -ItemType Directory -Path $old -Force | Out-Null
+
+$toArchive = @("doe_results.csv","doe_summary.json","doe_run.log","history.csv","history.db","optuna_study.db")
+foreach ($f in $toArchive) {
+  if (Test-Path ".\results\$f") { Move-Item ".\results\$f" $old }
+}
+```
+
+## Verification
+- Main `results/` has only current active artifacts
+- Conflict files moved to archive folder
+- Remote side sees same timestamps/files

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter001/_temp_mass.txt

@@ -1 +1 @@
-p173=1133.0042670507723
+1133.0042670507721

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter001/results.json

@@ -1,6 +1,6 @@
 {
   "iteration": 1,
-  "mass_kg": NaN,
+  "mass_kg": 1133.0042670507721,
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   "feasible": false,

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter002/_temp_mass.txt

@@ -1 +1 @@
-p173=1266.203458914867
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter002/results.json

@@ -1,6 +1,6 @@
 {
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+  "mass_kg": 1266.2034589148668,
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   "feasible": false,

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter003/_temp_mass.txt

@@ -1 +1 @@
-p173=1109.9630535376045
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter003/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter004/_temp_mass.txt

@@ -1 +1 @@
-p173=1718.1024059936985
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter004/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter005/_temp_mass.txt

@@ -1 +1 @@
-p173=1205.9185440163983
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter005/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter006/_temp_mass.txt

@@ -1 +1 @@
-p173=1085.4467002717115
+1085.4467002717115

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter006/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter007/_temp_mass.txt

@@ -1 +1 @@
-p173=1722.6740568945102
+1722.674056894509

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter007/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter008/_temp_mass.txt

@@ -1 +1 @@
-p173=1182.0927892029772
+1182.0927892029772

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter008/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter009/_temp_mass.txt

@@ -1 +1 @@
-p173=1185.767642455542
+1185.7676424555418

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter009/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter010/_temp_mass.txt

@@ -1 +1 @@
-p173=987.0960407947643
+987.0960407947646

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter010/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter011/_temp_mass.txt

@@ -1 +1 @@
-p173=1082.1233483234582
+1082.1233483234585

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter011/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter012/_temp_mass.txt

@@ -1 +1 @@
-p173=783.4437976533501
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter012/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter013/_temp_mass.txt

@@ -1 +1 @@
-p173=911.7858841605309
+911.7858841605309

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter013/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter014/_temp_mass.txt

@@ -1 +1 @@
-p173=1937.3276879524951
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter014/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter015/_temp_mass.txt

@@ -1 +1 @@
-p173=1641.9393126854027
+1641.9393126854027

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter015/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter016/_temp_mass.txt

@@ -1 +1 @@
-p173=1166.4986109547917
+1166.4986109547924

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter016/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter017/_temp_mass.txt

@@ -1 +1 @@
-p173=1165.9879420724315
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter017/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter018/_temp_mass.txt

@@ -1 +1 @@
-p173=1487.6954250173942
+1487.6954250173944

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter018/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter019/_temp_mass.txt

@@ -1 +1 @@
-p173=1211.87211970739
+1211.87211970739

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter019/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter020/_temp_mass.txt

@@ -1 +1 @@
-p173=1149.200700206242
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter020/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter021/_temp_mass.txt

@@ -1 +1 @@
-p173=1493.3399471409589
+1493.3399471409589

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter021/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter022/_temp_mass.txt

@@ -1 +1 @@
-p173=686.2888916637669
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter022/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter023/_temp_mass.txt

@@ -1 +1 @@
-p173=999.7016550018517
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter023/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter024/_temp_mass.txt

@@ -1 +1 @@
-p173=1435.135535503974
+1435.135535503974

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter024/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter025/_temp_mass.txt

@@ -1 +1 @@
-p173=1528.3897999240266
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter025/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter026/_temp_mass.txt

@@ -1 +1 @@
-p173=1276.5504502481265
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter026/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter027/_temp_mass.txt

@@ -1 +1 @@
-p173=1410.1593512483248
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter027/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter028/_temp_mass.txt

@@ -1 +1 @@
-p173=1582.291153913998
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter028/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter029/_temp_mass.txt

@@ -1 +1 @@
-p173=1398.2771475400532
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter029/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter030/_temp_mass.txt

@@ -1 +1 @@
-p173=1428.798569319311
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter030/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter031/_temp_mass.txt

@@ -1 +1 @@
-p173=815.486611683971
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter031/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter032/_temp_mass.txt

@@ -1 +1 @@
-p173=1231.4483565590738
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter032/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter033/_temp_mass.txt

@@ -1 +1 @@
-p173=1754.139697344678
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter033/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter034/_temp_mass.txt

@@ -1 +1 @@
-p173=688.6297607768506
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter034/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter035/_temp_mass.txt

@@ -1 +1 @@
-p173=1652.729145472504
+1652.7291454725032

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter035/results.json

@@ -1,6 +1,6 @@
 {
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-  "mass_kg": NaN,
+  "mass_kg": 1652.7291454725032,
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter036/_temp_mass.txt

@@ -1 +1 @@
-p173=899.6629740129987
+899.6629740129987

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter036/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter037/_temp_mass.txt

@@ -1 +1 @@
-p173=1539.426155950673
+1539.4261559506735

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter037/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter038/_temp_mass.txt

@@ -1 +1 @@
-p173=1300.5025884507997
+1300.5025884507997

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter038/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter039/_temp_mass.txt

@@ -1 +1 @@
-p173=1343.5034206648418
+1343.5034206648418

projects/hydrotech-beam/studies/01_doe_landscape/iterations/iter039/results.json

@@ -1,6 +1,6 @@
 {
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projects/hydrotech-beam/studies/01_doe_landscape/results/archive_before_clean_rerun_20260214_142013/doe_results.csv

@@ -0,0 +1,103 @@
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+81,geo_infeasible,10.744888282098874,16.028260362958154,389.08612738372096,14,99999.0,99999.0,99999.0,False,,,,-81.39381969141328,78.85735189036274,
+82,solved,31.240370325087493,26.41009203906711,273.18266513234516,10,1360.7619251710942,14.570237821053082,0.11891780882533094,True,False,True,False,171.2617793120993,173.99715078952062,0.0
+83,geo_infeasible,20.775031495682867,18.602850091163862,439.30358863649826,10,99999.0,99999.0,99999.0,False,,,,5.1408558079461955,23.490711181173992,
+84,solved,26.00450478511711,33.73796956646058,309.2653422609983,5,1374.5674544303447,13.034202085077842,0.1112284328449336,True,False,True,False,690.7346577390017,123.25871860608055,0.0
+85,solved,22.249541218652357,23.591878117279098,163.6658438964213,10,1182.798459195376,16.899432707045637,0.12057071418338186,True,False,True,False,280.7786005480232,289.1503998690205,0.0
+86,solved,34.50742630475948,19.91457704426444,301.4331617880579,8,1414.364395456454,15.657476238183712,0.12525579821509578,True,False,True,False,269.99540964051357,158.73768412341326,0.0
+87,geo_infeasible,37.732969901755745,29.990170628054525,366.3730412701501,14,99999.0,99999.0,99999.0,False,,,,-58.68073357784243,73.64661747374083,
+88,solved,37.19895822292572,36.450392892917435,405.40744176134933,7,1685.5388580525696,12.467247592960161,0.111681664976656,True,False,True,False,261.2592249053173,21.691772452815826,0.0
+89,solved,24.13665312381697,30.60108948604478,257.34854555318736,8,1238.330421583267,14.744635475834825,0.11736139594609407,True,False,True,False,314.0800258753841,181.4492754747231,0.0
+90,solved,30.315850546600835,28.803003242099344,286.25449297115927,11,1315.7312352420151,14.157422206852862,0.11126653881147827,True,False,True,False,113.74550702884073,156.13950054464203,0.0
+91,solved,15.231259729696596,20.51061793783426,341.16121801123404,10,786.7203444511985,20.00638783817639,0.17933414769622463,True,False,True,False,103.28322643321042,117.81754611309742,0.0
+92,solved,35.135355432426465,17.452468258634863,423.30383098713725,6,1223.873971953269,16.744357022570288,0.14683922370497737,True,False,True,False,376.69616901286275,41.79123249559302,0.0
+93,solved,35.46708851836511,32.57744662968254,228.6499364024705,13,1635.1990162889988,12.90243378315901,0.10354252793328764,True,False,True,False,104.68339693086281,206.19517033816444,0.0
+94,solved,23.046420945659438,11.556167883135958,418.6187160546307,9,606.9197647211752,24.902033177172868,0.20686007391063263,True,False,True,False,81.38128394536932,58.26894817909738,0.0
+95,geo_infeasible,21.922047096798718,20.86393201618128,360.37912109679735,13,99999.0,99999.0,99999.0,False,,,,-27.045787763464034,97.89301487084009,
+96,solved,26.538941763998174,37.0045746615665,184.02083272600328,13,1485.0289033431302,12.936892804021637,0.10133371129659173,True,False,True,False,149.31250060733004,241.97001795086373,0.0
+97,solved,13.332306234655581,22.63837385797062,260.8868498376813,13,777.427810458009,20.064200191814933,0.16666130488128264,True,False,True,False,72.44648349565199,193.8364024463774,0.0
+98,geo_infeasible,27.551926233190585,14.46757831387657,375.7580536267577,12,99999.0,99999.0,99999.0,False,,,,-12.121689990394088,95.30678974548914,
+99,solved,28.542165422707903,34.70133239672506,264.8484124805317,11,1465.2653114146049,13.42399062520343,0.10159560191596892,True,False,True,False,135.1515875194683,165.74892272601818,0.0
+100,solved,15.926345240553108,35.64252369044628,223.5314270645531,8,1204.2874622863012,14.244754483676394,0.11571957123078148,True,False,True,False,347.89714436401835,205.1835255545543,0.0
+101,solved,28.915906359365827,31.075262775497517,346.80055078514937,9,1294.707146798082,13.983544771506192,0.11515732934296288,True,False,True,False,153.19944921485063,91.04892366385559,0.0