Restructure Hydrotech Beam project — KB-integrated layout

New project structure with knowledge base integration:
- kb/ with components, materials, fea, dev generations
- models/ for reference NX files (golden copies)
- studies/ for self-contained optimization campaigns
- deliverables/ for final outputs
- DECISIONS.md decision log (6 decisions tracked)
- BREAKDOWN.md (moved from 1_breakdown/)
- Gen 001 created from intake + technical breakdown

KB extension file: atomizer/shared/skills/knowledge-base-atomizer-ext.md

Refs: DEC-HB-004, DEC-HB-005, DEC-HB-006

projects/hydrotech-beam/README.md

@@ -0,0 +1,72 @@
+# Hydrotech Beam — Structural Optimization
+
+**Client:** Hydrotech (internal test fixture)
+**Channel:** #project-hydrotech-beam
+**Created:** 2026-02-08
+**Status:** Technical Breakdown Complete — Awaiting Gap Resolution
+
+---
+
+## Objective
+
+Optimize a sandwich I-beam with lightening holes: minimize mass while meeting stiffness and strength constraints.
+
+## Key Numbers
+
+| Metric | Baseline | Target |
+|--------|----------|--------|
+| Mass | ~974 kg | Minimize |
+| Tip displacement | ~22 mm | ≤ 10 mm |
+| Von Mises stress | TBD | ≤ 130 MPa |
+
+## Design Variables
+
+| Variable | Range | Type |
+|----------|-------|------|
+| Half-core thickness | 10–40 mm | Continuous |
+| Face thickness | 10–40 mm | Continuous |
+| Hole diameter | 150–450 mm | Continuous |
+| Hole count | 5–15 | Integer |
+
+## Approach
+
+Two-phase optimization:
+1. **DoE** (LHS, 40–50 trials) — map the landscape
+2. **TPE** (Bayesian, 60–100 trials) — converge to optimum
+
+Total budget: ~100–150 NX evaluations, est. 2–5 hours compute.
+
+## Project Structure
+
+```
+hydrotech-beam/
+├── README.md              ← You are here
+├── CONTEXT.md             # Intake requirements
+├── BREAKDOWN.md           # Technical analysis
+├── DECISIONS.md           # Decision log
+├── models/                # Reference NX models (golden copies)
+├── kb/                    # Living knowledge base
+│   ├── components/        # Per-component knowledge
+│   ├── materials/         # Material data
+│   ├── fea/               # FEA model knowledge
+│   └── dev/               # Generation documents
+├── images/                # Screenshots, plots, renders
+├── studies/               # Optimization campaigns
+│   └── 01_doe_landscape/  # (first study — pending)
+└── deliverables/          # Final reports and recommendations
+```
+
+## Key Documents
+
+- [CONTEXT.md](CONTEXT.md) — Full intake data
+- [BREAKDOWN.md](BREAKDOWN.md) — Tech Lead's technical analysis
+- [DECISIONS.md](DECISIONS.md) — All project decisions
+- [kb/_index.md](kb/_index.md) — Knowledge base overview
+
+## Team
+
+| Role | Agent | Status |
+|------|-------|--------|
+| Manager | 🎯 Manager | Coordinating |
+| Technical Lead | 🔧 Tech Lead | Breakdown complete |
+| CEO | Antoine | Gap resolution pending |