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/kb/dev/gen-001.md

@@ -0,0 +1,58 @@
+# 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)