Feat/airline logos opensky refresh (#6)

* feat: keyboard shortcuts, click-to-select, pulse/glow, smooth orbit resume

* feat: add camera controls and enhance keyboard shortcuts help; improve flight card accessibility

* feat: enhance flight layers and keyboard shortcuts; improve airline data structure

* feat: expand airline logos and refresh flight/OpenSky mapping

* feat: import expanded airport dataset

* perf: reduce trail recomputation and soften airport dots

* perf: speed up 9k airport search with index + cache

* docs: add community standards and contribution templates

* docs: enforce issue templates via config

* chore: ignore only .github/agents

* fix: improve airport visibility and stable map marker

CONTRIBUTING.md

@@ -0,0 +1,21 @@
+# Contributing
+
+## Workflow
+1. Create a branch from `main`.
+2. Make focused, minimal changes.
+3. Run relevant checks locally.
+4. Open a pull request with clear context.
+
+## Pull Request Expectations
+- Keep PRs scoped to one topic.
+- Include a short summary of what changed and why.
+- Reference related issues when applicable.
+- Update docs when behavior changes.
+
+## Code Quality
+- Follow existing project style and conventions.
+- Avoid unrelated refactors.
+- Prefer clear, maintainable implementations.
+
+## Commit Messages
+Use concise, descriptive commit messages (for example: `feat: add airport search index`).