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

.github/pull_request_template.md

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+## Summary
+Describe what changed and why.
+
+## Changes
+- 
+
+## Validation
+- [ ] Relevant checks pass
+- [ ] Manual verification completed
+
+## Related
+Issue/Task: 
+
+## Notes
+Any deployment, migration, or follow-up notes.