fix(focus): prime Obsidian's Electron accessibility tree so suggestions work (#791)

Cotabby/Support/Focus/Applications/BrowserAppDetector.swift

@@ -46,14 +46,23 @@ nonisolated enum BrowserAppDetector {
     /// editor, the Copilot chat, or the integrated terminal, so no suggestions appear anywhere in the
     /// app even though screenshot-based OCR keeps working.
     ///
+    /// Obsidian (`md.obsidian`, issue #791) is the same failure in a different editor. Its
+    /// CodeMirror 6 surface is a `contenteditable` with `role="textbox"`, which Chromium exposes as
+    /// `AXTextArea` only once the web-AX tree is awake. A read-only probe of Obsidian 1.12.7
+    /// (Electron 39) showed the application element advertising `AXManualAccessibility` (settable,
+    /// value 0) while the focused window held a single bare `AXGroup`: the dormant renderer view.
+    /// With the bundle absent here nothing ever flipped that switch, so the system-wide focus query
+    /// returned nil and the tracker reported "No focused Accessibility element" on every tick.
+    ///
     /// Cursor is intentionally absent: it ships under opaque ToDesktop bundle ids
     /// (`com.todesktop.<hash>`) that change between builds, so there is no stable id to allowlist
     /// here without a broad `com.todesktop.` prefix that would also prime unrelated ToDesktop apps.
     private static let electronEditorBundleIdentifiers: Set<String> = [
         "com.clickup.desktop-app",
         "com.microsoft.vscode",          // Visual Studio Code
         "com.microsoft.vscodeinsiders",  // VS Code - Insiders
-        "com.vscodium"                   // VSCodium (FOSS VS Code build)
+        "com.vscodium",                  // VSCodium (FOSS VS Code build)
+        "md.obsidian"                    // Obsidian (Electron, CodeMirror 6 editor) — #791
     ]
 
     /// Broad check: is the user typing inside any web browser? Used for prompt tone hints.

CotabbyTests/Support/Accessibility/WebContentFieldDetectorTests.swift

@@ -66,6 +66,14 @@ final class WebContentFieldDetectorTests: XCTestCase {
                 vendsDOMAttributes: false
             )
         )
+        // Obsidian is an allowlisted Electron editor (#791), so its fields count as web content even
+        // before the DOM-reflection attributes arrive on the focused node.
+        XCTAssertTrue(
+            WebContentFieldDetector.isWebContentField(
+                bundleIdentifier: "md.obsidian",
+                vendsDOMAttributes: false
+            )
+        )
     }
 
     func test_nativeAppIsNotWebContent() {

CotabbyTests/Support/Focus/Applications/BrowserAppDetectorTests.swift

@@ -37,6 +37,11 @@ final class BrowserAppDetectorTests: XCTestCase {
         XCTAssertTrue(BrowserAppDetector.isElectronEditor(bundleIdentifier: "com.microsoft.VSCode"))
         XCTAssertTrue(BrowserAppDetector.isElectronEditor(bundleIdentifier: "com.microsoft.VSCodeInsiders"))
         XCTAssertTrue(BrowserAppDetector.isElectronEditor(bundleIdentifier: "com.vscodium"))
+        // Obsidian (#791): Electron 39 / CodeMirror 6. Its app element advertises
+        // AXManualAccessibility, but nothing flips it unless the bundle is allowlisted here, so the
+        // editor's web-AX tree stays dormant and no focused field ever resolves.
+        XCTAssertTrue(BrowserAppDetector.isElectronEditor(bundleIdentifier: "md.obsidian"))
+        XCTAssertTrue(BrowserAppDetector.isElectronEditor(bundleIdentifier: "MD.Obsidian"))
         // Electron, but not a text-editing surface we cover: must stay out of the priming allowlist.
         XCTAssertFalse(BrowserAppDetector.isElectronEditor(bundleIdentifier: "com.hnc.Discord"))
         XCTAssertFalse(BrowserAppDetector.isElectronEditor(bundleIdentifier: nil))
@@ -49,6 +54,8 @@ final class BrowserAppDetectorTests: XCTestCase {
             BrowserAppDetector.needsWebAccessibilityPriming(bundleIdentifier: "com.clickup.desktop-app"))
         XCTAssertTrue(
             BrowserAppDetector.needsWebAccessibilityPriming(bundleIdentifier: "com.microsoft.VSCode"))
+        XCTAssertTrue(
+            BrowserAppDetector.needsWebAccessibilityPriming(bundleIdentifier: "md.obsidian"))
         XCTAssertFalse(
             BrowserAppDetector.needsWebAccessibilityPriming(bundleIdentifier: "com.apple.Safari"))
         XCTAssertFalse(