main #1

- Double-click a task row to open Edit Task dialog
- Move Task|Add Task to File menu (first item); remove Task menu
- Add docked VTE terminal panel (Ctrl+~ to toggle), resizable via
 dragging the top separator; grabs keyboard focus on show
- File|Terminal toggle, Open DB in Terminal (sqlite3), Open DB in
 Browser (sqlitebrowser), Open todo CLI — all wired to the terminal
- Focus menu: separator after "Now in Focus" entry
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

- Add Task| menu (moved Add Task from File|, new List All Tasks... window)
- Task list window: sortable grid, open tasks only, right-click Done/Delete
- foreach(Person,Org,Meeting,Diary,Routine,Files,Binary): New X... dialog +
 List All... grid window with right-click Delete; new entities.rs module
- Menus restructured: New/List All section + operations section per entity
- Remove Focus|Suggest Next (generation artifact)
- Routine| moved after Diary| in menu bar
- guitodo.png app icon (×ばつ256, blue rounded square, checklist motif)
- guitodo.desktop file for XFCE4 app menu
- #[cfg(not(target_os = "windows"))] gate on VTE/terminal (terminal.rs,
 Cargo.toml, menus.rs) — CLI compiles on Windows without vte4
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Replace the GTK4/libadwaita/vte4 stack with egui 0.31 + eframe 0.31 +
rfd 0.15. All business logic (queries, models, schema) is unchanged.
- Delete: actions.rs, detail.rs, entities.rs, file_actions.rs,
 global_focus.rs, menus.rs, state.rs, terminal.rs, window.rs
- Add: app.rs (App + eframe::App impl), tabs.rs (9 detail tabs),
 focus_panel.rs, file_ops.rs, plus rewrites of main.rs, dialogs.rs,
 import.rs, tree.rs
- Single-owner App replaces Rc<RefCell<AppState>>; AppAction enum
 defers mutations out of egui closures
- VTE docked terminal dropped; xterm spawned externally (non-Windows)
- rfd replaces GTK FileChooserDialog throughout
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

New crate cloned from promptlib with markdown preview support
(edit/view toggle via egui_commonmark). DB: always ./projnotes.db
in current directory. Includes View menu with font size controls.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>