refactor(simulation): replace ad-hoc system ordering with TickPhase pipeline (#843)

10-phase linear pipeline: PreInput → Input → Movement → Simulation →
Economy → Storyteller → Snapshot → PostSnapshot → Knowledge → TickAdvance.

Each system assigned to exactly one phase via .in_set(TickPhase::X).
Cross-phase .after()/.before() eliminated — only intra-phase ordering
remains. Prevents schedule cycles by construction.

SimulationPlugin refactored into sub-plugins by domain:
  - InputPlugin (player actions, interactions, dialogue dispatch)
  - MovementPlugin (pathfinding, movement validation, spatial indexing)
  - SocialPlugin (conversations, sound, voice enrichment, follow state)
  - EconomyPlugin (tâtonnement tick, IPC query serving)
  - TimePlugin (chunk streaming, news ticker, tick advancement)

All other plugins (NPC, Knowledge, Perception, Storyteller, Settings,
Bridge) updated to use TickPhase assignments instead of cross-plugin
ordering constraints. BridgePlugin trimmed to bridge I/O concerns only.

Part A of #843. Parts B (multi-threaded executor) and C (background
workers) follow.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/src/simulation/input_plugin.rs

@@ -0,0 +1,36 @@
+//! Input phase plugin — processes player actions and interaction commands.
+//!
+//! All systems run in [`TickPhase::Input`]. Intra-phase ordering:
+//! - `process_player_input` runs first (dispatches queued actions)
+//! - Door/terminal/examine/triangle run after input (consume dispatched events)
+
+use bevy_app::prelude::*;
+use bevy_ecs::schedule::IntoScheduleConfigs;
+
+use crate::tick_phases::TickPhase;
+
+pub struct InputPlugin;
+
+impl Plugin for InputPlugin {
+    fn build(&self, app: &mut App) {
+        app.init_resource::<super::input::InputQueue>()
+            .init_resource::<super::interaction::TerminalInteractedQueue>()
+            // Triangle resolution resources (#250)
+            .init_resource::<super::triangle::ResolveTriangleQueue>()
+            .add_systems(
+                Update,
+                (
+                    super::input::process_player_input,
+                    super::interaction::process_door_interaction
+                        .after(super::input::process_player_input),
+                    super::interaction::process_terminal_interaction
+                        .after(super::input::process_player_input),
+                    super::examine::process_examine_interaction
+                        .after(super::input::process_player_input),
+                    super::triangle::apply_resolve_triangle
+                        .after(super::input::process_player_input),
+                )
+                    .in_set(TickPhase::Input),
+            );
+    }
+}