resolve workspace and appearance from the warm cache at boot

packages/shim/src/init.js

@@ -171,8 +171,7 @@ function applyCoreSyncGuard(plugins) {
       return data;
     }
 
-    let text =
-      typeof data === "string" ? data : new TextDecoder().decode(data);
+    let text = typeof data === "string" ? data : new TextDecoder().decode(data);
 
     try {
       const config = JSON.parse(text);
@@ -226,6 +225,13 @@ function updateBootProgress(received, total) {
   label.textContent = `Loading plugins... ${mb(received)}/${mb(total)} MB`;
 }
 
+// Resolve the active workspace and snapshot the appearance config.
+function resolveWorkspaceAndAppearance() {
+  resolveWorkspaceName();
+  loadPresetIfRequested();
+  initNativeMenuGuard();
+}
+
 export function initialize() {
   if (maybeProvisionDemoVault()) {
     window.__ignisBootReady = Promise.resolve();
@@ -233,9 +239,6 @@ export function initialize() {
   }
 
   resolveVaultId();
-  resolveWorkspaceName();
-  loadPresetIfRequested();
-  initNativeMenuGuard(window.__currentVaultId);
 
   const bootstrap = fetchBootstrap();
 
@@ -258,13 +261,16 @@ export function initialize() {
       { onProgress: updateBootProgress },
     );
 
-    window.__ignisBootReady = priority;
+    // Chain workspace/appearance resolution onto readiness so its config reads hit the warm priority slice instead of the network.
+    window.__ignisBootReady = priority.then(resolveWorkspaceAndAppearance);
   } else {
-    window.__ignisBootReady = Promise.resolve();
     initVaultConfigFallback();
     initVaultListFallback();
     initMetadataCacheFallback();
     initCoreSyncGuardFallback();
+    // No prefetch on the fallback path, so resolve directly; the reads fall through to the network.
+    resolveWorkspaceAndAppearance();
+    window.__ignisBootReady = Promise.resolve();
   }
 
   installRequestUrlShim();

packages/shim/src/native-menu-guard.js

@@ -6,34 +6,16 @@ import {
   registerReadTransform,
   registerWriteTransform,
 } from "./fs/transforms.js";
+import { fsShim } from "./fs/index.js";
 
 const APPEARANCE_PATH = ".obsidian/appearance.json";
 
 // undefined = key absent on disk; write transform keeps it absent.
 let preservedNativeMenus = undefined;
 
-function snapshotAppearance(vaultId) {
-  if (!vaultId) {
-    return;
-  }
-
+function snapshotAppearance() {
   try {
-    const xhr = new XMLHttpRequest();
-    const url =
-      "/api/fs/readFile?vault=" +
-      encodeURIComponent(vaultId) +
-      "&path=" +
-      encodeURIComponent(APPEARANCE_PATH) +
-      "&encoding=utf-8";
-
-    xhr.open("GET", url, false);
-    xhr.send();
-
-    if (xhr.status !== 200) {
-      return;
-    }
-
-    const obj = JSON.parse(xhr.responseText);
+    const obj = JSON.parse(fsShim.readFileSync(APPEARANCE_PATH, "utf-8"));
 
     if ("nativeMenus" in obj) {
       preservedNativeMenus = obj.nativeMenus;
@@ -158,9 +140,9 @@ function disableNativeMenuToggle() {
   });
 }
 
-export function initNativeMenuGuard(vaultId) {
-  // Snapshot before registering transforms so the write transform has the original disk value to substitute back.
-  snapshotAppearance(vaultId);
+export function initNativeMenuGuard() {
+  // Snapshot before registering the read transform so the captured value is the original on disk, not the forced value.
+  snapshotAppearance();
   registerReadTransform(APPEARANCE_PATH, readTransform);
   registerWriteTransform(APPEARANCE_PATH, writeTransform);
   patchSetConfig();

packages/shim/src/workspace.js

@@ -86,71 +86,40 @@ export function loadPresetIfRequested() {
   }
 }
 
-export function resolveWorkspaceName() {
+function readJsonIfPresent(path) {
   try {
-    const vaultParam = window.__currentVaultId
-      ? "?vault=" + encodeURIComponent(window.__currentVaultId)
-      : "";
+    return JSON.parse(fsShim.readFileSync(path, "utf-8"));
+  } catch {
+    return null;
+  }
+}
 
-    const sep = vaultParam ? "&" : "?";
+export function resolveWorkspaceName() {
+  // With no URL param, only resolve a workspace when the workspaces core plugin is enabled.
+  if (!window.__workspaceName) {
+    const corePlugins = readJsonIfPresent(".obsidian/core-plugins.json");
 
-    // If no param provided, check if workspaces plugin is enabled before resolving.
-    if (!window.__workspaceName) {
-      const coreXhr = new XMLHttpRequest();
-
-      coreXhr.open(
-        "GET",
-        "/api/fs/readFile" +
-          vaultParam +
-          sep +
-          "path=.obsidian/core-plugins.json&encoding=utf-8",
-        false,
-      );
-      coreXhr.send();
-
-      if (coreXhr.status !== 200) {
-        return;
-      }
-
-      const corePlugins = JSON.parse(coreXhr.responseText);
-
-      if (!corePlugins.workspaces) {
-        return;
-      }
-    }
-
-    // Read workspaces.json to get the active field.
-    const xhr = new XMLHttpRequest();
-
-    xhr.open(
-      "GET",
-      "/api/fs/readFile" +
-        vaultParam +
-        sep +
-        "path=.obsidian/workspaces.json&encoding=utf-8",
-      false,
-    );
-    xhr.send();
-
-    if (xhr.status !== 200) {
+    if (!corePlugins || !corePlugins.workspaces) {
       return;
     }
+  }
 
-    const workspaces = JSON.parse(xhr.responseText);
+  const workspaces = readJsonIfPresent(WORKSPACES_PATH);
 
-    // Always store the original active value for the write transform.
-    if (workspaces.active) {
-      window.__originalActiveWorkspace = workspaces.active;
-    }
+  if (!workspaces) {
+    return;
+  }
 
-    // If no param was provided, seed from the active workspace.
-    if (!window.__workspaceName && workspaces.active) {
-      window.__workspaceName = workspaces.active;
-      setWorkspaceParam(workspaces.active);
-      console.log("[ignis] Workspace resolved from active:", workspaces.active);
-    }
-  } catch (e) {
-    console.warn("[ignis] Failed to resolve workspace name:", e);
+  // Keep the original active value so the write transform can restore it on disk.
+  if (workspaces.active) {
+    window.__originalActiveWorkspace = workspaces.active;
+  }
+
+  // With no URL param, seed from the active workspace.
+  if (!window.__workspaceName && workspaces.active) {
+    window.__workspaceName = workspaces.active;
+    setWorkspaceParam(workspaces.active);
+    console.log("[ignis] Workspace resolved from active:", workspaces.active);
   }
 }