Sync .cursor from detections

.cursor/rules/coderule.mdc

@@ -4,7 +4,12 @@ alwaysApply: true
 ---
 # Coding preferences
 - Always prefer simple solution
+- Follow the Single Responsibility Principle — a class or method should have one reason to change:
+  - If a method is hard to name precisely from the caller's perspective, its responsibility is misplaced. Vague names like "candidate", "data", or "item" are a signal — fix the design, not just the name.
+  - Logic specific to a platform, variant, or environment belongs in the class that owns that variant, not in the general coordinator. Passing a dependency through is preferable to leaking variant-specific concepts into shared code.
+  - Only use static methods for pure, self-contained computations (constants, simple math, stateless lookups). If a static method involves resource access, side effects, OS interaction, or logic that varies across subclasses or environments — use an instance method or factory class instead. Before implementing a non-trivial static method, ask the user.
 - Generate concise code
+- Never suppress errors silently — no `2>/dev/null`, empty `catch` blocks, bare `except: pass`, or discarded error returns. These hide the information you need most when something breaks. If an error is truly safe to ignore, log it or comment why.
 - Do not put comments in the code, except in tests: every test must use the Arrange / Act / Assert pattern with language-appropriate comment syntax (`# Arrange` for Python, `// Arrange` for C#/Rust/JS/TS). Omit any section that is not needed (e.g. if there is no setup, skip Arrange; if act and assert are the same line, keep only Assert)
 - Do not put logs unless it is an exception, or was asked specifically
 - Do not put code annotations unless it was asked specifically 
@@ -13,6 +18,7 @@ alwaysApply: true
 - Mocking data is needed only for tests, never mock data for dev or prod env
 - Make test environment (files, db and so on) as close as possible to the production environment
 - When you add new libraries or dependencies make sure you are using the same version of it as other parts of the code
+- When writing code that calls a library API, verify the API actually exists in the pinned version. Check the library's changelog or migration guide for breaking changes between major versions. Never assume an API works at a given version — test the actual call path before committing.
 - When a test fails due to a missing dependency, install it — do not fake or stub the module system. For normal packages, add them to the project's dependency file (requirements-test.txt, package.json devDependencies, test csproj, etc.) and install. Only consider stubbing if the dependency is heavy (e.g. hardware-specific SDK, large native toolchain) — and even then, ask the user first before choosing to stub.
 - Do not solve environment or infrastructure problems (dependency resolution, import paths, service discovery, connection config) by hardcoding workarounds in source code. Fix them at the environment/configuration level.
 - Before writing new infrastructure or workaround code, check how the existing codebase already handles the same concern. Follow established project patterns.