style(simulation): cargo fmt + fix clippy warnings after economics integration

- `economy.rs`: fix empty_line_after_doc_comments (section ordering),
  use `is_multiple_of` for ECON_TICK_RATE check
- `debug.rs`, `input.rs`, `mod.rs`: rustfmt import ordering + indentation

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

server/src/bridge/debug.rs

@@ -12,10 +12,10 @@ use crate::bridge::types::{
     DebugCommandKind, DebugEnabled, DebugResponsePayload, EconDebugEffect, EconParamKind,
     SnapshotBuffer,
 };
-use crate::simulation::economy::{EconSimResource, EconStateResource};
 use crate::knowledge::EntityRegistry;
 use crate::npc::Npc;
 use crate::simulation::conversation::NpcName;
+use crate::simulation::economy::{EconSimResource, EconStateResource};
 use crate::simulation::movement::{PlayerCharacter, TilePosition, WalkabilityMap};
 use crate::simulation::tier::ActiveSim;
 use crate::simulation::time::SimulationTime;
@@ -337,7 +337,9 @@ pub fn handle_debug_commands(
                     magnitude,
                     duration_ticks,
                 } => {
-                    use econ_sim::events::{EconEvent, EconEventEffect, EconEventTarget, EconEventVisibility};
+                    use econ_sim::events::{
+                        EconEvent, EconEventEffect, EconEventTarget, EconEventVisibility,
+                    };
                     if let Some(ref mut sim) = econ_sim {
                         let econ_effect = match effect {
                             EconDebugEffect::CapacityMultiplier => {
@@ -346,9 +348,7 @@ pub fn handle_debug_commands(
                             EconDebugEffect::ProductivityMultiplier => {
                                 EconEventEffect::ProductivityMultiplier(magnitude)
                             }
-                            EconDebugEffect::DemandShock => {
-                                EconEventEffect::DemandShock(magnitude)
-                            }
+                            EconDebugEffect::DemandShock => EconEventEffect::DemandShock(magnitude),
                             EconDebugEffect::ExchangeShock => {
                                 EconEventEffect::ExchangeShock(magnitude)
                             }
@@ -427,7 +427,10 @@ pub fn handle_debug_commands(
                             }
                         } else {
                             let mut lines = vec![
-                                format!("=== Economy state for '{}' (econ_tick={}) ===", system_id, state.econ_tick),
+                                format!(
+                                    "=== Economy state for '{}' (econ_tick={}) ===",
+                                    system_id, state.econ_tick
+                                ),
                                 format!("  FX rate (Tractus/Mark): {:.4}", state.tractus_mark_rate),
                             ];
                             for ((_, commodity_id), sig) in &signals {