Rename constants to descriptive names (refactor step 1)

Pure rename, no behavior change; the full suite (RNG goldens,
generation invariants, scripted sessions, save round trip) is
unchanged and green.

- Creature flags: IsHuh→Confused, IsHalu→Hallucinating,
  CanHuh→CanConfuse, CanSee→CanSeeInvisible, IsRun→Awake,
  SeeMonst→SenseMonsters, IsCanc→Cancelled, IsLevit→Levitating,
  IsBlind/IsGreed/IsHaste/IsTarget/IsHeld/IsInvis/IsMean/IsRegen/
  IsFly/IsSlow → Blind/Greedy/Hasted/Targeted/Held/Invisible/Mean/
  Regenerates/Flying/Slowed, IsFound→Found
- Object flags: IsCursed→Cursed, IsKnow→Known, IsMissl→Missile,
  IsMany→Stackable, ObjIsFound→WasFound, IsProt→Protected
- Room flags: IsDark/IsGone/IsMaze → Dark/Gone/Maze; place flags:
  FPass→FPassage, FPNum→FPassNum, FTMask→FTrapMask
- Trap types: TDoor→TrapDoor ... TMyst→TrapMystery
- Item subtypes: P*→Potion* (PLSD→PotionLSD, PMFind→
  PotionDetectMonsters, ...), S*→Scroll* (SIDRorS→
  ScrollIdentifyRingOrStick, ...), R*→Ring* (RAddHit→RingDexterity,
  RNop→RingAdornment, ...), Ws*→Wand* (WsElect→WandLightning, ...),
  weapons (TwoSword→WeaponTwoHandedSword, Shiraken→WeaponShuriken,
  ...), armor (RingMail→ArmorRingMail, ...)
- Counts: Max{Potions,Scrolls,Rings,Sticks,Weapons,Armors} →
  Num{Potion,Scroll,Ring,Wand,Weapon,Armor}Types; NTraps→NumTrapTypes
- Level.NTraps field → TrapCount (also in the save snapshot)
- Original C constant names preserved as comment breadcrumbs in
  types.go so the lineage stays greppable

TODO.md: step 1 moved to Completed, step 2 (typed kinds) promoted to
Next Step.

TODO.md

@@ -19,19 +19,21 @@ Refactor ground rules:
 
 # Next Step
 
-Refactor step 1 (branch refactor/descriptive-constants): rename
-constants to descriptive, less C-like names. Creature/object/room/place
-flag bits (IsHuh→Confused, IsHalu→Hallucinating, CanHuh→CanConfuse,
-SeeMonst→SenseMonsters, ObjIsFound→WasFound, IsCanc→Cancelled, ...),
-trap types (TMyst→TrapMystery), item subtype constants
-(PLSD→PotionLSD, SIDRorS→ScrollIdentifyRingOrStick,
-RAddHit→RingDexterity, WsHasteM→WandHasteMonster,
-TwoSword→WeaponTwoHandedSword, ...), Max* count constants →
-Num*Types, and the Level.NTraps field → TrapCount. Pure rename; no
-behavior change; tests unchanged.
+Refactor step 2 (branch refactor/typed-kinds): typed kind enums —
+PotionKind, ScrollKind, RingKind, WandKind, WeaponKind, ArmorKind,
+TrapKind as iota enums with fmt.Stringer; Object.Which and the ObjInfo
+tables move to the typed kinds; the object category glyph bytes ('!',
+'?', ...) become an ObjectKind with a Glyph() method so item category
+and map character stop sharing one byte namespace.
 
 # Completed Steps
 
+- 2026-07-06 Refactor step 1 (refactor/descriptive-constants): renamed
+  all flag bits, trap types, item subtype constants, and Max* counts to
+  descriptive names (IsHuh→Confused, SeeMonst→SenseMonsters,
+  WsHasteM→WandHasteMonster, MaxSticks→NumWandTypes, ...);
+  Level.NTraps→TrapCount; C names kept as comment breadcrumbs. Pure
+  rename, suite green.
 - 2026-07-06 Made the rgoue branch Go-only: removed C sources and the
   autoconf/VS build system (they remain on master and modern-rogue),
   ported the last wizard command (item-probability listing), rewrote
@@ -53,58 +55,52 @@ behavior change; tests unchanged.
 
 # Future Steps
 
-1. Refactor step 2: typed kind enums — PotionKind, ScrollKind,
-   RingKind, WandKind, WeaponKind, ArmorKind, TrapKind as iota enums
-   with fmt.Stringer; Object.Which and the ObjInfo tables move to the
-   typed kinds; the object category glyph bytes ('!', '?', ...) become
-   an ObjectKind with a Glyph() method so item category and map
-   character stop sharing one byte namespace.
-2. Refactor step 3: un-overload Object fields — split Object.Arm into
+1. Refactor step 3: un-overload Object fields — split Object.Arm into
    ArmorClass/Charges/GoldValue; parse damage dice ("1x4/1x2") once
    into a DiceSpec type at table definition instead of per swing;
    save-format update with round-trip test migration.
-3. Adopt the house Go linting standards: copy .golangci.yml from the
+2. Adopt the house Go linting standards: copy .golangci.yml from the
    prompts repo and bring game/, term/, and cmd/ lint-clean (the port
    is greenfield code, so no exemptions apply).
-4. Refactor step 4: method renames, movement/world subsystem
+3. Refactor step 4: method renames, movement/world subsystem
    (doMove→moveHero, beTrapped→springTrap, rndmove→randomStep,
    doRooms/doPassages/doMaze→digRooms/digPassages/digMaze,
    chgStr→changeStrength, ...); remove the goto/label flows in doMove,
    dispatch, and saveGame in favor of loops and helpers.
-5. Refactor step 5: method renames, items/combat/UI subsystems
+4. Refactor step 5: method renames, items/combat/UI subsystems
    (invName→inventoryName, rollEm→rollAttacks, doPot→applyPotionFuse,
    getItem→promptPackItem returning (obj, ok), getDir→promptDirection);
    int status codes (attack returning -1) become named results. Two or
    three commits, one subsystem each.
-6. Refactor step 6: extract types from the god object — MessageLine
+5. Refactor step 6: extract types from the god object — MessageLine
    owns the msg/addmsg/endmsg machinery; pack/inventory operations move
    onto *Player; monster/object list management and map queries
    consolidate onto *Level; RogueGame keeps turn orchestration and
    cross-system effects only.
-7. Refactor step 7: effects dispatch — the giant quaff/readScroll/doZap
+6. Refactor step 7: effects dispatch — the giant quaff/readScroll/doZap
    switches become per-kind handler tables of small named methods,
    keeping effect order and RNG call sequence identical.
-8. Refactor step 8: constructor and style pass per the house
+7. Refactor step 8: constructor and style pass per the house
    styleguide — game.New(game.Params{...}) replacing NewGame(Config);
    replace the gameEnd panic unwind with error-based turn results where
    feasible; 77-column wrap sweep.
-9. Docs refresh: update ARCHITECTURE.md Part 2 and README.md for the
+8. Docs refresh: update ARCHITECTURE.md Part 2 and README.md for the
    post-refactor names; add the C name → Go name rename table.
-10. Playtest hardening pass: play several full games with the tcell
+9. Playtest hardening pass: play several full games with the tcell
     binary and extend run_test.go to script a deeper multi-level
     playthrough (descend past level 5, use potions, scrolls, zapping,
     save/restore). Fix any panics, message mismatches, or divergences
     from the C behavior that this uncovers, with regression tests.
-11. Verify the seed-compatibility claim against the C reference on
+10. Verify the seed-compatibility claim against the C reference on
     c-master: same seed, same dungeon, same item tables, for several
     seeds.
-12. Broaden unit test coverage where playtesting finds thin spots
+11. Broaden unit test coverage where playtesting finds thin spots
     (rings, sticks, wizard commands).
-13. Tag a release once a full game (Amulet retrieval and score entry)
+12. Tag a release once a full game (Amulet retrieval and score entry)
     completes without defects.
-14. Full-terminal-size support (deferred by explicit decision
+13. Full-terminal-size support (deferred by explicit decision
     2026-07-06): per-game dungeon dimensions instead of the 80x24
     constants; open design questions are resize policy, gameplay
     tuning at larger sizes, and a --classic 80x24 mode.
-15. Note: this repo is exempt from the standard policy scaffold. Do not
+14. Note: this repo is exempt from the standard policy scaffold. Do not
     add Makefile, Dockerfile, or REPO_POLICIES.md.