Adds documentation instructions for ADR, analyzers, and observability

Introduces new markdown files detailing editing rules for ADRs,
guidelines for analyzer and style configuration, and best practices
for observability and feature flags. These documents aim to ensure
consistency and clarity in project documentation and code quality.

Co-authored-by: Copilot <copilot@github.com>
This commit is contained in:
2026-04-25 16:30:51 +03:00
co-authored by Copilot
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---
description: "Use when editing analyzer or code-style configuration: .editorconfig, .globalconfig, stylecop.json, .DotSettings."
applyTo: ".editorconfig,.globalconfig,stylecop.json,*.DotSettings"
---
# Analyzer & Style Configuration
These files are the source of truth for code style and analyzer severity. Changes have wide blast radius.
> [!IMPORTANT]
> **Ask for explicit permission before editing.** State the rule(s), the new severity, and the rationale; wait for approval. Do not touch these files as part of unrelated work. The stated rationale belongs in the PR description.
## Guardrails
- **Do not relax a rule to silence a single occurrence.** Fix the code, or suppress narrowly with a justification comment in the offending file.
- New rules start at the **strictest justifiable severity**; downgrade later only with evidence.
- Never disable an entire analyzer category.
## File Roles
| File | Purpose |
| --- | --- |
| `.editorconfig` | Per-language formatting, naming rules, and analyzer severities scoped by file glob. |
| `.globalconfig` | Repo-wide analyzer severities not needing file-pattern scoping. |
| `stylecop.json` | StyleCop-specific settings (file headers, ordering, documentation). |
| `Solution.sln.DotSettings` | ReSharper/Rider mirror — **derived**, follows the others; do not lead changes here. |
## Coordination
- **A rule has one source of truth** across `.editorconfig`, `.globalconfig`, and `stylecop.json` — never duplicate.
- When a rule must appear in multiple files for IDE parity (e.g., mirrored to `Solution.sln.DotSettings`), severities **must match exactly**. Drift is a bug.
- StyleCop rules: configuration in `stylecop.json`, severity in `.editorconfig`.