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/simulation/ticker.rs

@@ -16,6 +16,10 @@ use crate::bridge::types::TickerLine;
 ///
 /// Must match the zone_id used in the production location YAML
 /// when the transit district ZoneMap is populated.
+///
+/// WARNING: Gauntlet assigns zone IDs sequentially and may differ from
+/// production. This constant is for production use only; Gauntlet tests
+/// should query the ContentStore for the correct zone ID.
 pub const LAST_SHIFT_ZONE_ID: u16 = 1;
 
 /// How often the displayed headline rotates, in ticks.
@@ -56,6 +60,11 @@ impl TickerPool {
 
     /// Advance to a new headline using SimRng if `TICKER_ROTATION_TICKS` have elapsed.
     ///
+    /// Uses sliding-window timing: the next rotation fires `TICKER_ROTATION_TICKS`
+    /// after the last rotation, not on a fixed modulus boundary. This means the first
+    /// headline persists for 200 ticks from tick 0, then each subsequent headline
+    /// persists for 200 ticks from the moment it was selected.
+    ///
     /// Called each tick by `tick_news_ticker`. Deterministic: same seed → same rotation.
     pub fn maybe_rotate(&mut self, current_tick: u64, rng: &mut crate::simulation::rng::SimRng) {
         if self.lines.is_empty() {