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/SECURITY.md

@@ -0,0 +1,15 @@
+# Security Policy
+
+## Supported Versions
+The `main` branch is the supported baseline for security fixes.
+
+## Reporting a Vulnerability
+Please do not disclose vulnerabilities publicly.
+
+Report security issues privately to the maintainers with:
+- A clear description of the issue
+- Steps to reproduce
+- Impact assessment
+- Any suggested mitigation
+
+We will acknowledge valid reports and provide status updates during triage and remediation.