feat(agents): tile-based workspace + Electron desktop shell

.changeset/electron-desktop-and-agents-ui-tiles.md

@@ -0,0 +1,36 @@
+---
+'@electric-ax/agents-desktop': patch
+'@electric-ax/agents-server': patch
+'@electric-ax/agents-server-ui': patch
+'@electric-ax/agents-runtime': patch
+'@electric-ax/agents': patch
+'@electric-sql/experimental': patch
+'@electric-sql/react': patch
+---
+
+Electron desktop shell, tile-based workspace, and per-session
+working-directory picker.
+
+  - `@electric-ax/agents-desktop`: new package — Electron app
+    bundling a local Horton runtime, system-tray status, multi-
+    window support, frameless windows with in-app title bars,
+    native menus, About dialog, on-launch API key prompt
+    (Anthropic / OpenAI / Brave), localhost agent-server discovery,
+    and HMR via `vite-plugin-electron`.
+  - `@electric-ax/agents-server`: entrypoint support for the local
+    desktop runtime wiring.
+  - `@electric-ax/agents-server-ui`: tile-based workspace (DnD,
+    splits, persisted layouts, shareable URLs), redesigned new-
+    session screen, refreshed dropdown chrome (`Combobox`
+    primitive, sentence-case section headings, ServerPicker-style
+    rows), sidebar filter & view menu with grouping by date /
+    type / status / working dir, full Settings screen with
+    General / Appearance / Local Runtime categories.
+  - `@electric-ax/agents`: Horton accepts an optional
+    `workingDirectory` spawn arg so each session can run against
+    its own project root without restarting the runtime.
+  - `@electric-ax/agents-runtime`: tool-pair preservation during
+    compaction and matching tool-call events by id (bug fixes
+    surfaced while building the desktop UI).
+  - `@electric-sql/experimental`, `@electric-sql/react`: align test
+    type configuration with DOM AbortSignal types used by the client.

.gitignore

@@ -37,3 +37,6 @@ _artifacts
 **/.env
 .opentrace/
 .opentrace-index.log
+
+# npm local cache/logs
+.npm/