feat: add radiosonde weather balloon tracking mode

Integrate radiosonde_auto_rx for automatic weather balloon detection and
decoding on 400-406 MHz. Includes UDP telemetry parsing, Leaflet map with
altitude-colored markers and trajectory tracks, SDR device registry
integration, setup script installation, and Docker support.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

routes/__init__.py

@@ -19,6 +19,7 @@ def register_blueprints(app):
     from .morse import morse_bp
     from .offline import offline_bp
     from .pager import pager_bp
+    from .radiosonde import radiosonde_bp
     from .recordings import recordings_bp
     from .rtlamr import rtlamr_bp
     from .satellite import satellite_bp
@@ -76,6 +77,7 @@ def register_blueprints(app):
     app.register_blueprint(signalid_bp)  # External signal ID enrichment
     app.register_blueprint(wefax_bp)  # WeFax HF weather fax decoder
     app.register_blueprint(morse_bp)  # CW/Morse code decoder
+    app.register_blueprint(radiosonde_bp)  # Radiosonde weather balloon tracking
     app.register_blueprint(system_bp)  # System health monitoring
 
     # Initialize TSCM state with queue and lock from app