refactor: code review cleanup, bug fixes, and RTC session persistence rtc session persistence: - add rtc_session module for deep sleep state preservation - save/restore nav stack, reader position, files scroll, home state - cache settings in RTC memory to skip SD reads on wake - keep RTC FAST memory powered during sleep (~1-2µA extra) - add collect_session/apply_session to AppLayer trait - add session state accessors to home, files, reader apps bugs: - fix typos in timing.rs (dookmark -> bookmark, dffset -> offset) - add spine bounds check in images.rs scan_chapter_for_image - add chapter validation after spine load in reader - log errors on pulp dir creation failure in main.rs - fix misleading comment in bitmap.rs (fallback is '?' not space) consolidation: - remove redundant extern crate alloc from files.rs, reader/mod.rs, images.rs - extract hint() helper in build.rs - extract is_power_event() helper in scheduler.rs - extract enter_error() helper in reader/mod.rs - add CONTENT_REGION constant in home.rs - trim unused layout constants clarity: - add rotation comment for SCREEN_W/H swap in board/mod.rs - add window bounds comment in strip.rs - rename cryptic vars in paging.rs (lc->line_count, ls->line_start, etc) - add state machine comment in reader/mod.rs simplification: - use if let instead of empty match in storage.rs - use map_or in app.rs render_ready - use .expect() for spawn failures in main.rs style: - convert /// doc comments to // in rtc_session.rs, layout.rs, utf8.rs
refactor: code review cleanup, bug fixes, and RTC session persistence rtc session persistence: - add rtc_session module for deep sleep state preservation - save/restore nav stack, reader position, files scroll, home state - cache settings in RTC memory to skip SD reads on wake - keep RTC FAST memory powered during sleep (~1-2µA extra) - add collect_session/apply_session to AppLayer trait - add session state accessors to home, files, reader apps bugs: - fix typos in timing.rs (dookmark -> bookmark, dffset -> offset) - add spine bounds check in images.rs scan_chapter_for_image - add chapter validation after spine load in reader - log errors on pulp dir creation failure in main.rs - fix misleading comment in bitmap.rs (fallback is '?' not space) consolidation: - remove redundant extern crate alloc from files.rs, reader/mod.rs, images.rs - extract hint() helper in build.rs - extract is_power_event() helper in scheduler.rs - extract enter_error() helper in reader/mod.rs - add CONTENT_REGION constant in home.rs - trim unused layout constants clarity: - add rotation comment for SCREEN_W/H swap in board/mod.rs - add window bounds comment in strip.rs - rename cryptic vars in paging.rs (lc->line_count, ls->line_start, etc) - add state machine comment in reader/mod.rs simplification: - use if let instead of empty match in storage.rs - use map_or in app.rs render_ready - use .expect() for spawn failures in main.rs style: - convert /// doc comments to // in rtc_session.rs, layout.rs, utf8.rs
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