[UC-3697] Configure agentic development enablement and static checks for libCharon

[Jelle Spijker (jellespijker)]

UC-3697 Configure agentic development enablement and static checks for libCharon

This pull request implements complete agentic developer enablement and automated static verification pipelines in . These changes establish a highly productive, uniform workspace environment for both human developers and autonomous AI coding agents.

Key Changes Introduced

• Unified Developer Guidelines (): Explains workspace boundaries, tech stack mapping, and how this repository fits into the broader Digital Factory and Cura slicing ecosystem.
• Pre-Commit Linting & Formatting Pipeline (): Enforces flawless quality control checks (credentials scanning with Talisman, logical path reference blockers, and code formatting).
• GitHub Copilot Workspace Settings (): Injects context-rich semantic guidelines to guide AI-assisted coding in real-time.

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Sibling Pull Requests (Ecosystem-Wide)

🔗 Multi-Repository PR Matrix (UC-3697)

To satisfy strict ISO-27001 audit compliance, traceability, and cross-repository review standards, this Pull Request is part of an ecosystem-wide alignment on branch UC-3697_platform_emulation_and_seeding.

Below is the complete, live matrix of all 16 companion Pull Requests spanning our SaaS orchestration, cloud APIs, 3D WebGL prep interface, and slicing stacks. Reviewers should ensure companion PRs are reviewed and verified in tandem.

#	Repository	Component / Role	Tech Stack	PR Link	Status
1	stardust-atlas	Meta Orchestration	Docker Compose / Bash	stardust-atlas #2	Draft
2	stardust-digitalfactory	SaaS Gateway / Web Portal	React 18 / Tornado	stardust-digitalfactory #4735	Draft
3	neoprep	Client-Side 3D Prep Canvas	React / WASM / Three.js	neoprep #922	Draft
4	stardust-web	Shared Component Library	React / CSS Modules	stardust-web #1195	Draft
5	stardust-commons	Shared Ingestion / Telemetry	Python / PEP 8	stardust-commons #1769	Draft
6	stardust-account	Identity & SSO Service	Python / React 18	stardust-account #3389	Draft
7	stardust-cura_cloud_api	Slicing Settings Resolver	Python / Tornado	stardust-cura_cloud_api #1477	Draft
8	stardust-cura_connect_api	Websocket Dispatcher	Python / Tornado	stardust-cura_connect_api #2142	Draft
9	stardust-virtual-printer	Printer Telemetry Emulator	Python / Socket.io	stardust-virtual-printer #36	Draft
10	subscription-service-nestjs	Billing & Licensing API	NestJS / TypeScript	subscription-service-nestjs #356	Draft
11	libCharon	CuraEngine Core Parser	C++ / Python	libCharon #58	Draft
12	stardust-websocket_protocol	Connect Binary Protocol	Python	stardust-websocket_protocol #101	Draft
13	Curator	C++ Settings Resolver	C++ / Python	Curator #278	Draft
14	CuraFormulaeEngine	Mathematical Cura Engine	C++	CuraFormulaeEngine #5	Draft
15	libUvula	Toolpath Metareader	C++ / Python	libUvula #13	Draft
16	fdm_materials	XML Material Database	XML	fdm_materials #377	Draft

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Empty Initiator Checklist

Caution

This Draft PR is a staging gate. Do not merge before confirming and checking off all points.

• Pre-commit Quality Audit: Have you run Check YAML configuration files...........................................Passed
  Check JSON configuration files...........................................Passed
  Prevent large files from being committed.................................Passed
  Ensure files end with a newline..........................................Passed
  Trim trailing whitespace.................................................Passed
  Scan for potential secrets (Talisman)....................................Passed
  Block absolute local path references.....................................Passed locally and confirmed that all checks pass cleanly?
• Onboarding Guidelines: Does the native accurately document folder layouts and development workflows?
• Ecosystem References: Does contain relative paths and descriptions of all relevant submodules or companion tools?
• No Hardcoded Absolute Paths: Have all absolute local paths been verified and replaced with safe environment variables or relative references?