Add schedule sync and schedule-aware playback

src/scroller_page.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "db/database_manager.h"
 #include "fibonacci_line_pattern.h"
 #include "page.h"
 #include "scroller_streams.h"
@@ -82,6 +83,16 @@ private:
     bool addLineAt(float baseY);
     void advanceStream();
     void switchAudioForCurrentStream();
+    // Re-reads the schedule from the DB/config and records which block (if any)
+    // matches the clock right now. Returns the matching index, or -1.
+    int currentScheduleBlockIndex() const;
+    // If the active block changed, latch a pending switch that is applied at the
+    // next proclamation boundary so the current proclamation is never cut off.
+    void pollScheduleChange();
+    // True when the current stream should use dynamic (frequency-following)
+    // audio. A schedule block with dynamicAudio=true forces it on; otherwise the
+    // configured audio.dynamic_audio setting applies.
+    bool effectiveDynamicAudio() const;
     void updateAutoVelocity(float dt);
     void ensureWordTexture(const std::string& word);
     void ensureCharTexture(const std::string& glyph);
@@ -97,6 +108,17 @@ private:
     int streamIndex_ = 0;
     bool prefilling_ = false;
 
+    // Schedule playback. `scheduleActive_` mirrors config; `scheduleBlocks_` is
+    // the cached schedule; `activeBlockIndex_` is the block currently playing
+    // (-1 = normal mode / no matching block). A change is latched in
+    // `scheduleChangePending_` and applied when the current proclamation ends.
+    std::string timezone_;
+    std::vector<radiantwave::db::ScheduleBlockRecord> scheduleBlocks_;
+    bool scheduleActive_ = false;
+    int activeBlockIndex_ = -1;
+    bool scheduleChangePending_ = false;
+    float schedulePollTimer_ = 0.0f;
+
     TTF_Font* font_ = nullptr;
     int fontPxSize_ = 32;
     float lineHeight_ = 0;