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

public/airline-logos/air-transat.svg

@@ -0,0 +1 @@
+<svg fill="#172B54" role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg"><title>Air Transat</title><path d="M17.611 0c-2.931.916-5.68 3.434-8.474 6.137C5.564 6.32 1.672 7.74 1.26 7.969c4.122 2.152 5.129 3.115 5.129 3.115s-1.374 3.938-1.649 6.457c.916-2.244 2.702-5.312 3.801-6.777-1.511-1.237-4.35-2.565-4.35-2.565s2.244-.962 6.733-1.191c0 0 1.878-3.619 6.687-7.008zm-2.244 3.344c-.412.87-1.146 2.793-1.283 4.213 3.16.229 5.312.963 5.312.963s-3.205 1.19-4.992 2.609c.32.779 1.055 3.07 1.467 4.855-.687-.64-2.748-2.336-4.26-3.252C9.596 13.511 4.1 18.962 1.031 24c1.328-1.374 5.267-5.817 10.58-9.023 1.1.64 6.137 3.939 6.137 3.939s-1.1-5.862-1.512-7.236c1.558-1.054 4.214-2.52 6.733-3.3-3.527-1.419-7.832-1.784-7.832-1.784s-.09-1.1.23-3.252z"/></svg>