desktop M10.5: wire the offline local source; boot to board with no server

adapters/local.ts implements the repository seam over the M10.4 Tauri commands
via invoke (camelCase args -> the commands' snake_case params); adapters/index.ts
now selects local when running in the desktop shell, rest on web. bridge.ts
exports invoke for it.

This is the commit that resolves the black screen: a fresh desktop launch reads
config + session + notes from the on-device SQLite core, so the router's auth
gate passes with a synthetic local user and the board renders with zero server
and zero account. Account auth, device linking, attachment upload, URL unfurl and
file import reject with a "connect a server" message (no offline meaning yet);
everything else — board, editor, capture, search, filters, labels, checklists,
reminders — works fully offline.

desktop.yml also now rebuilds the app on frontend adapter/bridge changes, since
the desktop bundle embeds the frontend.

Task 1994.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FRgehjoz7Yv8LkUfADxACm

.forgejo/workflows/desktop.yml

@@ -13,6 +13,10 @@ on:
     tags: ["v*"]
     paths:
       - "desktop/**"
+      # The desktop app embeds the frontend, and the data seam / Tauri bridge are
+      # what the offline core rides on — rebuild the app when those change too.
+      - "frontend/src/adapters/**"
+      - "frontend/src/desktop/**"
       - ".forgejo/workflows/desktop.yml"
   workflow_dispatch:
 

frontend/src/adapters/index.ts

@@ -1,19 +1,16 @@
 // The data source the whole app uses. Import `repo` from here — never reach for
 // `api/client` in stores/views.
 //
-// Today it always resolves to the REST source. M10.5 adds the offline desktop
+// The desktop shell runs fully offline against the on-device SQLite core
-// source (`local.ts`, over Tauri `invoke`) and flips this to a runtime choice:
+// (`local.ts`, over Tauri `invoke`); the web build uses REST. A server-connected
-//
+// desktop (opt-in sync) comes in M10.7 — at which point this becomes
-//   import { isDesktop } from "../desktop/bridge";
+// `isDesktop() && !hasConfiguredServer() ? local : rest`.
-//   import { local } from "./local";
-//   export const repo: Repo = isDesktop() && !hasConfiguredServer() ? local : rest;
-//
-// so a fresh desktop launch runs fully offline, and a server-connected one keeps
-// using REST. Web is unaffected.
 
+import { isDesktop } from "../desktop/bridge";
 import { rest } from "./rest";
+import { local } from "./local";
 import type { Repo } from "./repo";
 
-export const repo: Repo = rest;
+export const repo: Repo = isDesktop() ? local : rest;
 
 export type { Repo } from "./repo";

frontend/src/adapters/local.ts

@@ -0,0 +1,86 @@
+// Offline desktop implementation of the repository seam: maps each operation to a
+// Tauri command backed by the on-device SQLite store (desktop/src-tauri/src/local).
+// Selected by index.ts when running inside the desktop shell with no server.
+//
+// Argument keys are camelCase; Tauri converts them to the Rust commands' snake_case
+// parameters (e.g. labelIds -> label_ids). A few operations have no offline meaning
+// yet (account auth, device linking, attachment upload, URL unfurl, file import) —
+// those reject with a clear message rather than silently failing; the board, editor,
+// capture, search, filters, labels, checklists and reminders all work fully offline.
+
+import { invoke } from "../desktop/bridge";
+import type { Note, NoteRevision } from "../stores/notes";
+import type { Label } from "../stores/labels";
+import type { SavedFilter } from "../stores/savedFilters";
+import type { Device } from "../stores/devices";
+import type { TitleEntry } from "../stores/titles";
+import type { User } from "../stores/session";
+import type { PublicConfig } from "../stores/config";
+import type { Backlink, DeviceToken, ImportResult, Repo } from "./repo";
+
+const NEEDS_SERVER = "That's not available offline — connect a server to use it.";
+
+export const local: Repo = {
+  config: {
+    get: () => invoke<PublicConfig>("config_get"),
+  },
+
+  auth: {
+    me: () => invoke<User>("auth_me"),
+    login: () => Promise.reject(new Error("You're offline — there's no account to sign in to.")),
+    register: () => Promise.reject(new Error("You're offline — accounts are created on a server.")),
+    logout: () => Promise.resolve(),
+  },
+
+  devices: {
+    list: () => Promise.resolve<Device[]>([]),
+    create: () => Promise.reject<DeviceToken>(new Error(NEEDS_SERVER)),
+    remove: () => Promise.resolve(),
+  },
+
+  labels: {
+    list: () => invoke<Label[]>("labels_list"),
+    create: (name) => invoke<Label>("labels_create", { name }),
+    rename: (id, name) => invoke<Label>("labels_rename", { id, name }),
+    setColor: (id, color) => invoke<Label>("labels_set_color", { id, color }),
+    remove: (id) => invoke<void>("labels_remove", { id }),
+    merge: (sourceId, into) => invoke<Label>("labels_merge", { sourceId, into }),
+  },
+
+  notes: {
+    list: (query) => invoke<Note[]>("notes_list", { query }),
+    get: (id) => invoke<Note>("notes_get", { id }),
+    create: (input) => invoke<Note>("notes_create", { input }),
+    createTitled: (title) => invoke<Note>("notes_create_titled", { title }),
+    update: (id, changes) => invoke<Note>("notes_update", { id, changes }),
+    completeReminder: (id) => invoke<Note>("notes_complete_reminder", { id }),
+    snoozeReminder: (id, minutes) => invoke<Note>("notes_snooze_reminder", { id, minutes }),
+    setLabels: (id, labelIds) => invoke<Note>("notes_set_labels", { id, labelIds }),
+    addItem: (id, text) => invoke<Note>("notes_add_item", { id, text }),
+    updateItem: (id, itemId, changes) => invoke<Note>("notes_update_item", { id, itemId, changes }),
+    deleteItem: (id, itemId) => invoke<Note>("notes_delete_item", { id, itemId }),
+    uploadAttachment: () => Promise.reject<Note>(new Error(NEEDS_SERVER)),
+    deleteAttachment: (id, attId) => invoke<Note>("notes_delete_attachment", { id, attId }),
+    unfurl: () => Promise.reject<Note>(new Error(NEEDS_SERVER)),
+    deletePreview: (id, previewId) => invoke<Note>("notes_delete_preview", { id, previewId }),
+    import: () => Promise.reject<ImportResult>(new Error(NEEDS_SERVER)),
+    reorder: (orderedIds) => invoke<void>("notes_reorder", { orderedIds }),
+    trash: (id) => invoke<Note>("notes_trash", { id }),
+    restore: (id) => invoke<Note>("notes_restore", { id }),
+    deleteForever: (id) => invoke<void>("notes_delete_forever", { id }),
+    revisions: (id) => invoke<NoteRevision[]>("notes_revisions", { id }),
+    restoreRevision: (id, revId) => invoke<Note>("notes_restore_revision", { id, revId }),
+    reminders: () => invoke<Note[]>("notes_reminders"),
+    titles: () => invoke<TitleEntry[]>("notes_titles"),
+    search: (q) => invoke<Note[]>("notes_search", { q }),
+    backlinks: (id) => invoke<Backlink[]>("notes_backlinks", { id }),
+    linkSearch: (q) => invoke<TitleEntry[]>("notes_link_search", { q }),
+  },
+
+  savedFilters: {
+    list: () => invoke<SavedFilter[]>("saved_filters_list"),
+    create: (name, params) => invoke<SavedFilter>("saved_filters_create", { name, params }),
+    remove: (id) => invoke<void>("saved_filters_remove", { id }),
+    rename: (id, name) => invoke<SavedFilter>("saved_filters_rename", { id, name }),
+  },
+};

frontend/src/desktop/bridge.ts

@@ -24,7 +24,7 @@ export function isDesktop(): boolean {
   return typeof window !== "undefined" && !!window.__TAURI__;
 }
 
-function invoke<T>(cmd: string, args?: Record<string, unknown>): Promise<T> {
+export function invoke<T>(cmd: string, args?: Record<string, unknown>): Promise<T> {
   const tauri = window.__TAURI__;
   if (!tauri) return Promise.reject(new Error("Not running in the desktop app."));
   return tauri.core.invoke<T>(cmd, args);