Remove dialogue tone-of-voice system, add Gitea Actions full build, add venue cycling

- Delete Rules.Tone/TONE_NAMES, NpcProfile.tone_modifiers, tone params on
  NPCController.roll_reaction/apply_player_action; dialogue_lines flattened
  to Array[String]; HUD tone label, T binding, and hud.tone_prefix removed
- Docs updated everywhere (PLAN, README, DONE, MEMORY); PLAN section heading
  'Tone and Design Direction' -> 'Design Direction'
- Add .gitea/workflows/build.yml: checks job (import+tests) on push/PR; full
  build job (export templates, Linux/Windows/macOS exports, artifact upload,
  and tag-based Gitea release publish via GITEA_TOKEN) on tags/dispatch
- Remove old .github/workflows/ci.yml to avoid double runs
- Add venue cycling (V) across all three scenarios with hud.venue_switched
- Refresh README screenshots to match the new HUD
- 53/53 tests pass, boot smoke clean

src/core/npc_profile.gd

@@ -12,8 +12,7 @@ const Rules := preload("res://src/core/rules.gd")
 ## Affects how likely the NPC is to argue, point, or threaten at each level.
 @export_range(0.0, 1.0) var temperament: float = 0.25
 
-## Base compliance: probability the NPC obeys a level-1 polite direction.
-## Venue/scenario recalculates effective compliance from profile + tone + level.
+## Probability the NPC obeys a level-1 polite direction.
 @export_range(0.0, 1.0) var base_compliance: float = 0.8
 
 ## Probability that an NPC directed away will circle back later in the shift
@@ -56,18 +55,11 @@ const Rules := preload("res://src/core/rules.gd")
 	},
 }
 
-@export var tone_modifiers: Dictionary = {
-	Rules.Tone.FRIENDLY: 0.10,   # + compliance
-	Rules.Tone.PROFESSIONAL: 0.00,
-	Rules.Tone.FIRM: -0.05,
-	Rules.Tone.SUSPICIOUS: -0.15,
-}
-
 ## Delay the NPC waits before reacting to the player (frames/seconds scaled).
 @export_range(0.1, 5.0) var reaction_delay: float = 0.6
 
-## Dialogue lines per tone and intent. Falls back to generic lines when empty.
-@export var dialogue_lines: Dictionary = {}
+## Dialogue lines this NPC uses. Falls back to generic lines when empty.
+@export var dialogue_lines: Array[String] = []
 
 ## Items the NPC is carrying, used by the handheld wand (The Joke Shop).
 ## Values are item names: "keys", "belt", "phone", "weapon", "knife", etc.