docs: fix stale references in PLAN.md, README.md, and DEVELOPMENT.md

- PLAN.md: replace non-existent ListSelector.svelte with actual components
  (TaskDetailView, BottomSheet, ConfirmDialog, DateTimePicker)
- PLAN.md: rename stores/app.ts → app.svelte.ts to match actual filename
- PLAN.md: add missing tauri-plugin-credentials/ to directory structure
- PLAN.md: remove non-existent commands.rs; mark lib.rs as command handler
- PLAN.md: correct sliding drawer width "80vw" → "80cqi"
- README.md: add Wayland env var note for Tauri dev command
- DEVELOPMENT.md: fix debug snippet .metadata.json → .onyx-workspace.json

https://claude.ai/code/session_018Nqr77xVGjbsWxgeMJb7HG

PLAN.md

@@ -664,16 +664,23 @@ apps/tauri/
 │       ├── components/
 │       │   ├── TaskItem.svelte
 │       │   ├── NewTaskInput.svelte
-│       │   └── ListSelector.svelte
+│       │   ├── TaskDetailView.svelte
+│       │   ├── BottomSheet.svelte
+│       │   ├── ConfirmDialog.svelte
+│       │   └── DateTimePicker.svelte
 │       └── stores/
-│           └── app.ts
+│           └── app.svelte.ts
+├── tauri-plugin-credentials/     # Cross-platform credential storage plugin
+│   ├── Cargo.toml
+│   ├── src/
+│   │   └── lib.rs                # Desktop (keyring) + plugin API
+│   └── android/                  # Android (EncryptedSharedPreferences)
 └── src-tauri/                    # Rust backend (Tauri commands)
     ├── Cargo.toml
     ├── tauri.conf.json
     └── src/
         ├── main.rs
-        ├── commands.rs           # Tauri command handlers
-        └── lib.rs
+        └── lib.rs                # Tauri command handlers
 ```
 
 #### First Run Experience
@@ -742,7 +749,7 @@ WorkspaceConfig {
 - [x] Delete tasks (kebab menu → delete)
 - [x] Mark tasks complete/incomplete with animated transitions
 - [x] Drag-and-drop task reordering
-- [x] Sliding lists drawer (80vw, left side)
+- [x] Sliding lists drawer (80cqi wide, left side)
 - [x] Settings popup overlay (WebDAV config, dark mode toggle)
 - [x] Dark mode (GNOME-style neutral theme, cyan-blue accent)
 - [x] Animated completed section show/hide

README.md

@@ -91,7 +91,7 @@ cargo run -p onyx-cli -- --help
 
 # Run Tauri GUI
 cd apps/tauri && npm install
-npm run tauri dev
+npm run tauri dev                # (Wayland: WEBKIT_DISABLE_DMABUF_RENDERER=1 npm run tauri dev)
 ```
 
 ## Quick Start

docs/DEVELOPMENT.md

@@ -272,7 +272,7 @@ Inspect the file system directly:
 
 ```bash
 # Check metadata
-cat ~/test-tasks/.metadata.json | jq
+cat ~/test-tasks/.onyx-workspace.json | jq
 
 # Check list metadata
 cat ~/test-tasks/My\ Tasks/.listdata.json | jq