fix(docs): correct cross-reference errors in Bergtor and Sonnwend

Bergtor (GJ 505A): GJ 454 described as "stub without significant
industrial development" — corrected to reflect Steinfeld's active
quarrying economy. Sonnwend (GJ 320): GJ 798 described as "a stub" —
corrected to acknowledge Brückenau's through_route topology.

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

wiki/star-systems/GJ-320/index.md

@@ -24,7 +24,7 @@ The spur_end topology means Wend's two gates open inward: one toward Rana (GJ 15
 
 Sonnwend exports food — bulk grain, preserved root crops, dried protein legumes, and the cold-storage fresh produce that the Gate Corporation's ferry schedules permit. The inward route through Rana (GJ 150) carries these exports toward Hansestadt and the core; the Compact's internal distribution network directs them outward from there to the dim-star systems that cannot grow their own. Sonnwend's surplus feeds a population several times its own size across the outer corridor, which is the practical foundation of the leverage the Compact's negotiators invoke when Assembly trade delegates discuss the west_reach's integration status.
 
-Imports are manufactured goods, technical components, and the specialty materials that agricultural systems need from industrial ones. These arrive primarily through Rana (GJ 150). The pricing through Rana is Assembly-influenced — Rana maintains commercial neutrality and prices accordingly — which means Sonnwend periodically investigates alternative routing through GJ 798, but GJ 798 is a stub and its commercial infrastructure has not developed to the point where it offers better terms.
+Imports are manufactured goods, technical components, and the specialty materials that agricultural systems need from industrial ones. These arrive primarily through Rana (GJ 150). The pricing through Rana is Assembly-influenced — Rana maintains commercial neutrality and prices accordingly — which means Sonnwend periodically investigates alternative routing through GJ 798, but the through-route at GJ 798 has not developed commercial infrastructure to the point where it offers better terms than Rana's established corridor.
 
 MVG has no significant contract presence in Sonnwend. Agricultural output is outside MVG's corridor specialization in this region, and the founding cooperative's charter explicitly prohibited resource extraction contracts that would compete with agricultural land use — a provision that has been challenged three times and upheld three times by the charter council.
 

wiki/star-systems/GJ-505A/index.md

@@ -22,7 +22,7 @@ MVG's contracts have been active in Bergtor for approximately two hundred and fi
 
 ## Supply Dependency
 
-Bergtor's supply dependency runs entirely through Eisentor (GJ 3454). The spur_end topology gives the system only this one commercial artery, and its spur terminus at GJ 454 sees little commercial traffic in either direction from Bergtor's perspective — GJ 454 is a stub without significant industrial development, and goods that reach Bergtor from that direction are rare. Manufactured goods, food, medical supplies, and operational equipment all flow in through Eisentor. Raw and semi-processed mineral output flows back out the same way.
+Bergtor's supply dependency runs entirely through Eisentor (GJ 3454). The spur_end topology gives the system only this one commercial artery, and its spur terminus at GJ 454 sees little commercial traffic in either direction from Bergtor's perspective — GJ 454 is a dead-end quarrying system whose bulk aggregate output moves inward through Bergtor, but generates limited return traffic. Manufactured goods, food, medical supplies, and operational equipment all flow in through Eisentor. Raw and semi-processed mineral output flows back out the same way.
 
 MVG's logistics chain manages the primary export flow: ore consolidated at Mass's surface operations is loaded onto MVG's scheduled transit and moves inward through Eisentor toward Hansestadt and the wider Reach. Independent operators handle smaller-volume specialty minerals and the refractory ceramic precursors that go to fabrication shops that do not want to buy through MVG's distribution system. These independents use the same gate schedule as MVG's freighters, which means everyone at Bergtor understands that Eisentor's gate scheduling decisions affect them directly.