pack: v0.29.0 — train fuel requirement + CBC tier-preserving safety

Two related gameplay tweaks:

1. Train fuel requirement (Steam 'n' Rails)
   - Set realisticTrains = true in railways-server.toml.
     Trains now consume fuel from a Fuel Tank (liquid) or solid fuels
     in chests/barrels on the contraption. realisticFuelTanks stays
     true so tanks won't accept water/junk.
   - Ship a datapack bns-fuel/ that defines TFMG fluids as proper
     liquid fuels at tiered burn rates:
       crude_oil    8000 ticks/bucket   (raw, abundant -- entry)
       furnace_gas 12000 ticks/bucket   (cheap by-product)
       naphtha     24000 ticks/bucket   (mid refined)
       kerosene    24000 ticks/bucket   (mid refined)
       gasoline    36000 ticks/bucket   (top refined)
       diesel      48000 ticks/bucket   (top refined, longest)
     Vanilla lava bucket still works via bucket-burn fallback
     (20000 ticks). Tier curve incentivises building a real refinery.

2. CBC tier-preserving cannon safety
   - Revert the nuclear disableAllCannonFailure=true switch shipped
     in v0.28 hotfix -- it killed the bronze/steel/nethersteel tier
     balance because overloaded cannons fired without consequence.
   - Per-lever config that protects against random RNG losses while
     keeping the tier mechanic intact:
       disableAllCannonFailure = false
       squibChance = 0.0              (no random projectile-stuck)
       barrelChargeBurstChance = 0.0  (forgive misplaced charges)
       interruptedIgnitionChance = 0.0 (forgive gapped loads)
       overloadBurstChance = 1.0      (TIER STRICT -- exceed your
                                       cannon's rated propellant
                                       stress = lose the cannon)
       failureExplosionPower = 0.0    (no collateral blast when it
                                       does die from overload)
   - Effect: a cannon built to spec and used within its
     maxSafePropellantStress is immortal. Overloading dies cleanly
     per the material's failureMode, no fortress damage. User error
     (squib/misplace/gap) doesn't destroy expensive builds.

Stress units NOT supported for trains: verified by inspecting Rails
and Create bytecode, nothing consumes SU for train movement. Liquid
fuel is the supported mechanism.

Verified live: server boots clean, port 25565 binds, KubeJS loads
0 errors, Minecraft auto-enables the bns-fuel datapack, Rails
initializes the LiquidFuelManager reload listener.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

pack/overrides/defaultconfigs/createbigcannons-server.toml

@@ -4,33 +4,33 @@
 	#.
 	#.
 	#If true, cannons cannot fail whatsoever. Equivalent to setting all the chances below to zero.
-	disableAllCannonFailure = true
+	disableAllCannonFailure = false
 	#.
 	#Chance that a fired projectile will get stuck in a barrel after exceeding the squib ratio. 0 is 0%, 1 is 100%.
 	# Default: 0.25
 	# Range: 0.0 ~ 1.0
-	squibChance = 0.25
+	squibChance = 0.0
 	#.
 	#Chance that a cannon will fail if a Powder Charge is ignited in a "barrel"-type cannon block. 0 is 0%, 1 is 100%.
 	#This chance can be affected by stronger and weaker charge blocks.
 	# Default: 0.20000000298023224
 	# Range: 0.0 ~ 1.0
-	barrelChargeBurstChance = 0.20000000298023224
+	barrelChargeBurstChance = 0.0
 	#.
 	#How strong the explosion of a catastrophic failure is. Scaled by the amount of charges used in the shot.
 	# Default: 2.0
 	# Range: 0.0 ~ 3.4028234663852886E38
-	failureExplosionPower = 2.0
+	failureExplosionPower = 0.0
 	#.
 	#Chance that a cannon loaded with more Powder Charges that it can handle will fail. 0 is 0%, 1 is 100%.
 	# Default: 0.5
 	# Range: 0.0 ~ 1.0
-	overloadBurstChance = 0.5
+	overloadBurstChance = 1.0
 	#.
 	#Chance that a load with gaps between the loaded Powder Charges will not completely combust. 0 is 0%, 1 is 100%.
 	# Default: 0.33000001311302185
 	# Range: 0.0 ~ 1.0
-	interruptedIgnitionChance = 0.33000001311302185
+	interruptedIgnitionChance = 0.0
 
 #.
 #These values affect the characteristics of cannon munitions.