refactor: split auto-rules into modpack/ vs curated/ provenance subdirs

The previous flat data/rules/ flattened a real distinction:
  - data/rules/modpack/  mirrors of upstream modpack-author-bundled
                         sorting_rules.txt (HellDrinx). Update when
                         upstream publishes; don't unilaterally edit.
  - data/rules/curated/  sortof-operator-authored rules for individual
                         mods whose authors didn't declare load order
                         in their mod.info (RV Interior Expansion).

The loader stays provenance-agnostic; trigger values in _RULES_TRIGGERS
are paths relative to data/rules/ ("modpack/helldrinx.txt" etc.).
File headers in each rules file declare the provenance category and
edit policy.

data/rules/modpack/helldrinx.txt

@@ -0,0 +1,71 @@
+; HellDrinx — modpack-author-bundled sorting rules (mirror of upstream).
+; Provenance: data/rules/modpack/. Update when the modpack publishes a
+; new sorting_rules.txt; do not edit unilaterally.
+;
+; Triggers: HellDrinx FULL (3672556207), HellDrinx LITE (3662909244).
+; Auto-injected by app.py:_auto_rules_for() when either trigger wsid is in
+; the user's input. User-supplied rules are appended afterward and override
+; these on conflicting keys.
+
+[PROJECTRVInterior42]
+loadFirst=on
+[TombBody]
+loadAfter=SPNCC,SPNCCDetails,SPNCCDetailsHD,SpnHairAPI,SpnCloth,SpnOpenCloth,SPNCCFaces,SpnHair,FH,KATTAJ1_ClothesCore,KATTAJ1_Military,[J&G] Black Multicam Uniform,[J&G] British DPM Uniform,[J&G] Caution Pack,[J&G] Firefighter Uniform,[J&G] Neon Vandals Uniform,[J&G] SWAT Uniform,[J&G] Trauma Responder Uniform,[J&G] Umbrella Corp Uniform,[J&G] Alpine Multicam Uniform,[J&G] Desert Multicam Uniform,[J&G] Flecktarn Uniform,[J&G] Forest Multicam Uniform,[J&G] Jordan's Tailoring Buff,[J&G] MARPAT Camo Uniform,[J&G] XKU Uniform,AliceGear,CamisetasSeleccion,CerberusPack,DarkWpnSlings,EFTBP,GanydeBielovzki's Frockin Shirts n Ties,GanydeBielovzki's Frockin Splendor!,GanydeBielovzki's Frockin Splendor! Vol.2,GanydeBielovzki's Frockin Splendor! Vol.3,GanydeBielovzki's Frockin Splendor! Vol.4,GanydeBielovzki's Frockin Splendor! Vol.5,GanydeBielovzki's Frockin Wiseguys,H_E_C_U,HardwoodsTurnoutGear,KITTYOWO,LynxPack,MilitaryPonchosRELOADED,newclothesmodels,TwoWeaponsB,VanillaGearExpanded,zReApoPonchosB42,zReArmorPackBYKB42,ArmoredVests,ArmoredVestsPatch
+loadLast=on
+[TombBodyCustom]
+loadAfter=TombBody
+loadLast=on
+[TombBodyTexDOLL]
+loadAfter=TombBodyCustom
+incompatibleMods=TombBodyTexNUDE,TombBodyTex
+loadLast=on
+[TombGothTexDOLL]
+loadAfter=TombBodyTexDOLL
+incompatibleMods=TombGothTexNUDE,TombBodyTexNUDE,TombBodyTex
+loadLast=on
+[TombGothHair]
+loadAfter=TombBody,FH
+[TombBodyCompat]
+loadAfter=TombBody
+loadLast=on
+[TombWardrobeALT]
+loadAfter=TombBody
+loadLast=on
+[Optimal]
+loadLast=on
+[Performance]
+loadLast=on
+[ProjectSummerCar]
+loadAfter=VehicleRepairOverhaul,VehicleSalvageOverhaulB42
+incompatibleMods=Ivmakk_RestoreEngineQuality
+loadLast=on
+category=undefined
+[ItemretexturePSC]
+loadLast=on
+category=undefined
+[VehicleRepairOverhaul]
+loadBefore=ProjectSummerCar,Ivmakk_RestoreEngineQuality
+incompatibleMods=SimpleAutoParts
+loadLast=on
+[VehicleSalvageOverhaulB42]
+loadBefore=ProjectSummerCar,Ivmakk_RestoreEngineQuality
+loadLast=on
+[MoreDescriptionForTraits4213]
+loadBefore=FIX_DetailedDescriptionsForOccupationsAndTraits
+[HellDrinxJSONFix]
+loadAfter=ItemretexturePSC,TombBodyCompat
+loadLast=on
+[HellDrinxTranslations]
+loadAfter=ItemretexturePSC
+loadLast=on
+[HellDrinxBugFixes]
+loadAfter=ItemretexturePSC,TombBodyCompat,TombWardrobeALT,HellDrinxStrangers,SpnCloth
+loadLast=on
+[HellDrinxEssentials]
+loadLast=on
+[HellDrinxBugFixesFirst]
+loadFirst=on
+[TACPDM2]
+loadLast=on
+[damnlib]
+loadFirst=on