Long expeditions D1-c: T3 zones to new 22-26 room band

Both T3 zones follow the D1-a/b pattern: extend the graph so the longest
entry→boss walk lands in band, keep the zone's authored topology intact.

  manor_blackspire (T3): 11 → 35 nodes, longest 23 (band 22-26)
  underforge       (T3): 10 → 31 nodes, longest 23 (band 22-26)

Topology preserved per zone:
- Manor: two-stacked-3-way forks identity + full lock-kind coverage
  (LockNone, LockPerception, LockStatCheck, LockLevelMin). Adds the
  missing Trap anchor (Cursed Threshold). All six spokes are 3 mid-nodes
  so route choice is loot/encounter character, not shortcut economics.
- Underforge: one-way-descent gauntlet identity preserved — 17-node
  linear preamble through the existing Cooling River (TRAP) and Magma
  Chamber (ELITE), single 3-way antechamber fork before boss. All three
  antechamber spokes are 4 mid-nodes.

MinRooms/MaxRooms re-pitched 7-9 → 22-26 so the dice fallback also lands
in band for any future graphless variant.

internal/plugin/dnd_zone.go

@@ -423,8 +423,8 @@ func zoneManorBlackspire() ZoneDefinition {
 		Faction:    "Undead, Shadows, Vampiric",
 		Atmosphere: "Victorian decay, impossible architecture, portraits whose eyes follow movement, cold spots, locked rooms that weren't locked before.",
 		Hook:       "The manor has been for sale for eleven years. Every buyer has either left immediately or not left at all. The real estate listing describes it as 'full of character.' I find this accurate.",
-		MinRooms:   7,
-		MaxRooms:   9,
+		MinRooms:   22,
+		MaxRooms:   26,
 		Enemies: []ZoneEnemy{
 			// Phase 4-B (outlier fix): Wraith was the dominant
 			// standard-pool killer (45 hp loss/win, 85 attributed
@@ -491,8 +491,8 @@ func zoneUnderforge() ZoneDefinition {
 		Faction:    "Fire Elementals, Constructs, Salamanders, Azers",
 		Atmosphere: "Volcanic caverns, rivers of cooling lava, ancient dwarven stonework, the constant bass note of something very large moving below.",
 		Hook:       "The dwarven forge-city of Kharak Dûn was not abandoned. It was sealed from the outside. I do not have information on what they were sealing in.",
-		MinRooms:   7,
-		MaxRooms:   9,
+		MinRooms:   22,
+		MaxRooms:   26,
 		Enemies: []ZoneEnemy{
 			// Phase 5-C: underforge trailed at 49.5% (band 55-75)
 			// under the shipped HP×1.5/+3 floor. Trace named Fire