feat: add paste without formatting command

docs/ABSTRACTIONS.md

@@ -362,7 +362,7 @@ A `vault_health_check` command detects stray files in non-protected subfolders a
 
 Command-layer path access is fenced to the active vault before file operations reach the vault backend. `src-tauri/src/commands/vault/boundary.rs` canonicalizes the configured/requested vault root, rejects `..` escapes and absolute paths outside that root, and validates writable targets through the nearest existing ancestor so note reads, saves, deletes, view-file edits, folder mutations, and image attachment writes cannot step outside the active vault. Image attachment commands add the current vault root to the runtime asset scope after saving so files created under a previously missing `attachments/` directory can render immediately.
 
-UI-only file actions operate on paths that are already selected or indexed in React state. Reveal-in-Finder routes through the Tauri opener plugin, external-open routes through the `open_vault_file_external` command and active-vault boundary before invoking the native opener, and copy-path uses the browser clipboard API. None of those actions mutate vault contents or bypass the backend write boundary.
+UI-only file actions operate on paths that are already selected or indexed in React state. Reveal-in-Finder routes through the Tauri opener plugin, external-open routes through the `open_vault_file_external` command and active-vault boundary before invoking the native opener, and copy-path uses the browser clipboard API. Plain-text paste reads the desktop clipboard through `read_text_from_clipboard` in Tauri so macOS WKWebView clipboard permissions do not block the command; browser/mock mode falls back to the Web Clipboard API or mock handlers. None of those actions mutate vault contents or bypass the backend write boundary.
 
 The local MCP WebSocket bridge follows the same active-vault boundary. `useVaultSwitcher` calls `sync_mcp_bridge_vault` after the persisted selection loads and after each vault switch; the desktop command starts/restarts the bridge with that vault's canonical path, or stops it when there is no selected vault. App exit uses the same child cleanup path and waits for the bridge process after killing it. MCP Node entrypoints require `VAULT_PATH` and fail clearly instead of falling back to `~/Laputa`. Manual MCP config export uses the same generated stdio entry as registration, so the copied snippet remains scoped to the active vault without writing third-party config files. Desktop snippet copy goes through the native `copy_text_to_clipboard` command, while browser/mock mode keeps using the Web Clipboard API. External-client stdio MCP processes also exit when stdin closes; their UI-bridge reconnect timers and WebSocket are canceled during shutdown so disconnected clients do not leave extra Node processes behind.
 
@@ -557,6 +557,7 @@ Defined in `src/components/tolariaEditorFormatting.tsx` and `src/components/tola
 - The `/` slash menu remains the supported path for markdown-safe block transformations such as headings, quotes, and list blocks. Tolaria filters out BlockNote's toggle-heading and toggle-list variants because those do not map cleanly to the markdown note model.
 - The block-handle side menu keeps only actions that survive Tolaria's markdown round-trip. Delete and table-header toggles remain available; BlockNote's `Colors` submenu is removed because block colors are not part of Tolaria's supported markdown surface.
 - `useNoteWikilinkDrop()` is the shared editor-drop abstraction for dragging note rows into either editor mode. It reads the existing note-retargeting drag payload, resolves the vault-relative stem, and inserts a canonical `[[wikilink]]` without hijacking unrelated plain-text drags.
+- `plainTextPaste.ts` is the shared plain-text paste target registry. Rich BlockNote and raw CodeMirror surfaces register focused insertion targets, while ordinary focused text controls use DOM selection replacement, so the `Cmd+Shift+V` command can preserve caret/selection behavior without each surface inventing its own clipboard reader.
 - `useTauriDragDropEvent()` owns the shared Tauri window drag/drop subscription and duplicate-unlisten cleanup used by native drop features.
 - `useNativePathDrop()` is the shared Tauri file/folder-drop abstraction for text inputs that need filesystem paths instead of attachment import. It consumes native window drag/drop events, gates them to the target element bounds or focused text selection, and lets AI composer / command-palette inputs insert formatted paths at the current cursor.