Claude Context: PSI Knowledge Base
Purpose: AI agent entry point. Read this first for business context, terminology, and a reading order.
Reading Order
- Terminology — 80+ PSI-specific terms. Read this first.
- About PSI — Company overview, products, organizational structure.
- Engineering — Design workflow, ECN/NCN process.
- Manufacturing — Build process, departments, assembly.
- Quality — Redbook system, quality metrics.
- Data Brain — Master reference for all PSI data — what exists, where, how to access.
- PSI Web App Compliance Standard — Canonical standard for compliant PSI web app changes.
- llms.txt — Full index of all documentation.
What is PSI?
Progressive Surface Inc. (PSI) is a custom industrial machine manufacturer based in Grand Rapids, Michigan. PSI builds surface treatment equipment including:
- Blast rooms/cabinets: Abrasive blasting for cleaning/finishing
- Spray booths: Coating application systems
- Peen systems: Shot peening for fatigue resistance
- Thermal spray: Metal/ceramic coating systems
Each machine is a custom project (not mass production) with 6-18 month lead times. Customers include aerospace, automotive, energy, and general manufacturing industries.
Essential Terminology
These terms appear throughout PSI systems and documentation. See Terminology for the complete glossary.
Must-Know Terms
| Term | Meaning |
|---|---|
| Redbook | Quality issue ticket (not a physical book) |
| ECN | Engineering Change Notice (formal design change) |
| NCN | Non-Conformance Notice (vendor quality issue) |
| PHYS. | Physical-level part (lowest reusable design unit) |
| BOM | Bill of Materials (hierarchical parts list) |
| GTCode | Group Technology Code (FACILITY > ASSEMBLY > MODULE > PHYS.) |
| New Build | New machine project (4-digit job numbers) |
| Retrofit | Modification to existing machine (5-digit job numbers >=10000) |
Department Codes
| Code | Department |
|---|---|
| 110 | Mechanical Engineering |
| 111 | Controls/Electrical Engineering |
| 106 | Mechanical Assembly |
| 108 | Electrical Assembly |
| 120 | MVI (Machine Verification & Inspection) |
| 135 | Field Service |
Key Business Metrics
| Metric | Definition | Target |
|---|---|---|
| Quality % | Quality Cost / Project Value | <2% |
| Early Detection Rate | % issues found >90 days before ship | >50% |
| Field Escape Rate | % issues found post-ship | <3% |
Data & Systems
Primary Systems
| System | Purpose |
|---|---|
| AFTEC | Core ERP database (UniData) |
| SolidWorks PDM | Engineering drawings and BOMs |
| Redbook System | Quality issue tracking |
Key Data Sources
| Source | Records | Purpose |
|---|---|---|
| Redbook Export | 49,758 | Quality issue tickets (1999-2025) |
| Project XML | 3,084 | Project metadata |
| BOM Exports | 1,704 files | Bill of Materials per project |
| Parts Master | 419,627 | All parts with classification |
See Data Brain for complete inventory.
Wiki Structure
content/
├── index.md # Homepage with navigation
├── CLAUDE_CONTEXT.md # This file
├── llms.txt # Full page index for AI navigation
│
├── company/ # WHO WE ARE — PSI context & domain knowledge
│ ├── about.md # Company overview, products, services
│ ├── terminology.md # 80+ term glossary
│ ├── lds-methodology.md # LDS engineering framework
│ ├── engineering.md # Design workflow, ECN/NCN process
│ ├── manufacturing.md # Build process, departments, assembly
│ └── quality.md # Redbook system, quality metrics
│
├── applications/ # WHAT WE BUILD — living docs per app/tool
│ ├── index.md # Portfolio overview with links
│ ├── redbook-web.md # Redbook Web RFC management
│ ├── psi-explorer.md # PSI Explorer Web
│ ├── project-explorer.md # Project Explorer
│ ├── erp-migration.md # ERP Migration Tool
│ ├── psi-portal.md # PSI Portal launcher
│ ├── unidata-api.md # UniData REST API
│ ├── cli-export.md # PSI Export CLI
│ ├── wiki-site.md # This wiki
│ ├── proapps.md # 35+ WPF desktop apps
│ └── redbook-analysis.md # Quality analytics pipeline
│
├── development/ # HOW WE BUILD — patterns, tools, guides
│ ├── webapp-compliance-standard.md # Canonical web app compliance baseline
│ ├── deploy-to-azure.md # Web apps architecture & Azure deployment guide
│ ├── u2-toolkit-migration.md # UniData access migration guide
│ ├── agentic-implementation.md # AI-assisted dev methodology
│ ├── claude-code.md # Claude Code integration & skills
│ └── webapp-testing.md # Testing best practices
│
├── data/ # OUR DATA — schemas, catalogs, systems
│ ├── data-brain.md # Master data reference (hub page)
│ ├── data-dictionary.md # Field definitions for analytics
│ ├── redbook-schema.md # REDBOOK.1287 field reference
│ ├── fabric-progressive-dataset.md # Power BI/Fabric table schemas
│ ├── inventory-and-work-orders.md # WO types, inventory tables, IBM
│ └── psiall-architecture.md # .NET codebase & UniData subroutines
│
├── reference/ # DEEP REFERENCE — technical catalogs
│ └── aftec/ # AFTEC subroutine catalog (21 files)
│ ├── index.md
│ └── ... (20 domain files)
│
├── analytics/ # METRICS — dashboards & methodology
│ ├── dashboards.md # Dashboard docs
│ └── methodology.md # Metric calculations
│
└── guides/ # HOW-TO — step-by-step tutorials
├── getting-started.md # Wiki orientation (15 min)
├── dev-setup.md # Developer environment setup
├── connect-ai.md # AI agent access setup
├── edit-wiki.md # Wiki editing guide
├── obsidian-tips.md # Obsidian power tips
└── training-presentation.md # Team training slides
For AI Agents: Common Tasks
| Task | Start Here | | --------------------------------- | ---------------------------------------- | -------------------------------------- | ------------- | | Understanding a term | Terminology | | Finding data sources | Data Brain | | Learning about quality | Quality | | Understanding engineering | Engineering | | Understanding the technology | PSI.All Architecture | | Working on analytics | Dashboards + Methodology | | Making a compliant web app change | PSI Web App Compliance Standard | | Deploying an app | Deploy to Azure | | Understanding an application | Applications Overview | | Finding a subroutine | AFTEC Catalog |
Last updated: March 2026