fix(simulation): address PR #85 review — warnings and polish items

- Ticker rotation: document sliding-window semantics (vs modulus-aligned)
- Ticker zone ID: add warning about Gauntlet vs production zone ID mismatch
- Proof-room movement profile: respect archetype instead of hardcoding smuggler
- Storyteller tie-break: use exact f32 equality (inputs are discrete integers)
- Observer: .map().flatten() → .and_then() (clippy strict)
- Content loader: remove dangling doc comment before section header
- Tests: replace assert!(false, ...) with TODO comments in ignored tests
- Tests: add frame limiter note on 302-update loop in tell expiry test

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

server/src/perception/observer/mod.rs

@@ -442,8 +442,7 @@ pub fn compute_observer_snapshot(
     // News ticker (#591): populate when player is in The Last Shift zone.
     let player_zone = zone_map
         .as_deref()
-        .map(|zm| zm.zone_at(observer_pos.x, observer_pos.y, observer_pos.z))
-        .flatten();
+        .and_then(|zm| zm.zone_at(observer_pos.x, observer_pos.y, observer_pos.z));
     let current_ticker = if player_zone == Some(LAST_SHIFT_ZONE_ID) {
         ticker_pool
             .as_deref()