auto-fix: strip 4 broken wiki links

Pipeline auto-fixer: removed [[ ]] brackets from links
that don't resolve to existing claims in the knowledge base.

domains/space-development/europe-space-launch-strategic-irrelevance-without-starship-class-capability.md

@@ -39,4 +39,4 @@ Relevant Notes:
 - [[Starship achieving routine operations at sub-100 dollars per kg is the single largest enabling condition for the entire space industrial economy]]
 
 Topics:
-- [[domains/space-development/_map]]
+- domains/space-development/_map

domains/space-development/reusable-launch-convergence-creates-us-china-duopoly-in-heavy-lift.md

@@ -37,5 +37,5 @@ Relevant Notes:
 - [[SpaceX vertical integration across launch broadband and manufacturing creates compounding cost advantages that no competitor can replicate piecemeal]]
 
 Topics:
-- [[domains/space-development/_map]]
-- [[core/grand-strategy/_map]]
+- domains/space-development/_map
+- core/grand-strategy/_map

domains/space-development/the space launch cost trajectory is a phase transition not a gradual decline analogous to sail-to-steam in maritime transport.md

@@ -40,4 +40,4 @@ Relevant Notes:
 - [[what matters in industry transitions is the slope not the trigger because self-organized criticality means accumulated fragility determines the avalanche while the specific disruption event is irrelevant]] — the accumulated cost inefficiency of expendable launch is the slope; Falcon 9 reusability was the trigger
 
 Topics:
-- [[space exploration and development]]
+- space exploration and development