Move all package-level vars into gameData; finish lint adoption

gochecknoglobals: all 37 package-level tables consolidated into the
gameData struct (game/tables.go), built by newGameData() and carried
on RogueGame as g.data (set in NewGame and Restore). ObjectKind
Glyph()/objectKindForGlyph are now switches; the table-reading subtype
Stringer methods are gone; isMagic is a RogueGame method.

goconst: repeated words named (potionName/scrollName/ringName/goldName
in object.go, wandName/staffName in sticks.go, ripWall in tables.go).

exhaustive, testpackage: disabled in .golangci.yml with sneak's
approval (2026-07-07).

Also reverts misspell's silent corruption of the "ther" scroll-name
syllable (it had become "there", changing generated scroll names vs C).

Remaining red: cyclop/gocognit/nestif until refactor step 7; mnd
awaits a ruling. TODO.md rotated; MEMORY.md lint notes updated.

game/game.go

@@ -138,6 +138,9 @@ type RogueGame struct {
 
 	rogueOpts string // the ROGUEOPTS string, re-parsed by playit as in C
 	restored  bool   // game came from a save file; Run skips setup
+
+	// data is the game's copy of the static tables (extern.c and friends).
+	data *gameData
 }
 
 // NewGame builds a game from cfg, seeds the RNG, and randomizes the item
@@ -145,6 +148,7 @@ type RogueGame struct {
 // and first level arrive with later porting phases).
 func NewGame(cfg Config) *RogueGame {
 	g := &RogueGame{
+		data:      newGameData(),
 		Rng:       &Rng{Seed: cfg.Seed},
 		Dnum:      int(cfg.Seed),
 		Whoami:    cfg.Name,
@@ -176,7 +180,7 @@ func NewGame(cfg Config) *RogueGame {
 		g.ParseOpts(cfg.RogueOpts)
 	}
 
-	g.Monsters = monsterTable
+	g.Monsters = g.data.monsterTable
 
 	g.Items.Group = 2 // weapons.c: int group = 2
 	for i := range g.Level.Passages {