fix: drop vim mode, pin CodeMirror to dodge esm.sh outage

esm.sh's build backend was returning HTTP 500 for unbuilt @codemirror/*@6
version ranges (out of disk). A failed top-level module import aborts the
whole <script type=module>, so fillLangs()/loadModels() never ran and the
language/model dropdowns came up empty despite a healthy backend.

- Pin CodeMirror imports to already-built versions (view@6.36.0,
  state@6.7.0, commands@6.10.4), which esm.sh serves fine during the outage.
- Remove vim editing mode entirely (@replit/codemirror-vim import, vim()
  extension, Vim.mapCommand H/L bindings, .cm-vim-panel CSS). The
  document-level Shift-H/L focus cycling is retained.
- Bump to 0.4.0.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

@@ -7,6 +7,14 @@ Versioning: [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [0.4.0] - 2026-07-05
+
+### Removed
+- Vim editing mode. Dropped the `@replit/codemirror-vim` import and its `Vim.mapCommand` H/L focus bindings. The document-level Shift-H/L focus cycling across the dropdowns/buttons is retained (it never depended on vim). One fewer esm.sh dependency.
+
+### Fixed
+- Empty language and model dropdowns when esm.sh cannot serve an unpinned `@codemirror/*@6` range (their build backend was returning HTTP 500 on unbuilt versions). A failed top-level module import aborts the whole `<script type="module">`, so `fillLangs()`/`loadModels()` never ran despite a healthy backend. CodeMirror imports are now pinned to already-built versions (`view@6.36.0`, `state@6.7.0`, `commands@6.10.4`).
+
 ## [0.3.0] - 2026-06-09
 
 ### Added

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "finrod"
-version = "0.3.0"
+version = "0.4.0"
 description = "Translator UI backed by Ollama"
 requires-python = ">=3.11"
 dependencies = [

static/index.html

@@ -474,13 +474,6 @@
     }
     .cm-scroller { padding: 0.6rem 0.75rem; }
     .cm-content { caret-color: var(--accent); }
-    /* vim's command-line / status hint inherits readable colors */
-    .cm-vim-panel {
-      background: var(--panel);
-      color: var(--fg);
-      border-top: 1px solid var(--border);
-      font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
-    }
 
   </style>
 </head>
@@ -550,10 +543,9 @@
   </button>
 
   <script type="module">
-    import { EditorView, keymap, placeholder } from "https://esm.sh/@codemirror/view@6";
+    import { EditorView, keymap, placeholder } from "https://esm.sh/@codemirror/view@6.36.0";
-    import { EditorState } from "https://esm.sh/@codemirror/state@6";
+    import { EditorState } from "https://esm.sh/@codemirror/state@6.7.0";
-    import { history, defaultKeymap, historyKeymap } from "https://esm.sh/@codemirror/commands@6";
+    import { history, defaultKeymap, historyKeymap } from "https://esm.sh/@codemirror/commands@6.10.4";
-    import { vim, Vim } from "https://esm.sh/@replit/codemirror-vim@6";
 
     const LANGUAGES = [
       "English", "Portuguese (Brazil)", "Portuguese (Portugal)", "Spanish",
@@ -975,18 +967,13 @@
       if (file) runOCR(file);
     });
 
-    // --- CodeMirror editor (vim mode on real keyboards only) ----------------
+    // --- CodeMirror editor --------------------------------------------------
     const isCoarsePointer = window.matchMedia("(pointer: coarse)").matches;
     let typingTimer;
     const editor = new EditorView({
       parent: document.getElementById("input"),
       state: EditorState.create({
         extensions: [
-          // vim() MUST be first per @replit/codemirror-vim docs so its keymap
-          // takes precedence. Skipped on touch devices — modal editing without
-          // a hardware Esc key on a virtual keyboard is unusable, and IME
-          // composition fights the vim keymap.
-          ...(isCoarsePointer ? [] : [vim()]),
           history(),
           keymap.of([
             { key: "Mod-Enter", run: () => { translate(); return true; } },
@@ -1214,10 +1201,8 @@
     goBtn.addEventListener("click", translate);
 
     // Shift-H / Shift-L cycle focus across controls (vim-style Shift-Tab /
-    // Tab). Two paths kept in sync:
+    // Tab), for focus on a select / button. Inside the editor they type
-    //   1. Document keydown listener — fires when focus is on a select / button
+    // normally.
-    //   2. Vim normal-mode mapping (below) — fires when focus is in the editor
-    // Together they make Shift-H/L work everywhere, including escaping the editor.
     const focusables = [
       { el: sourceSel, focus: () => sourceSel.focus() },
       { el: targetSel, focus: () => targetSel.focus() },
@@ -1239,23 +1224,12 @@
       if (!e.shiftKey) return;
       const k = e.key.toLowerCase();
       if (k !== "h" && k !== "l") return;
-      // Inside the editor, vim's mapCommand handles H/L (see below). Letting
+      // Inside the editor, let H/L type normally.
-      // the event bubble here would double-jump.
       if (editor.dom.contains(document.activeElement)) return;
       e.preventDefault();
       moveFocus(k === "l" ? 1 : -1);
     });
 
-    // Override vim's H/L (normally "viewport top/bottom") so they exit the
-    // editor to the previous/next control, matching the Shift-H/L contract
-    // the document handler uses elsewhere.
-    if (!isCoarsePointer) {
-      Vim.defineAction("finrodFocusPrev", () => moveFocus(-1));
-      Vim.defineAction("finrodFocusNext", () => moveFocus(1));
-      Vim.mapCommand("H", "action", "finrodFocusPrev", {}, { context: "normal" });
-      Vim.mapCommand("L", "action", "finrodFocusNext", {}, { context: "normal" });
-    }
-
     // Side drawer (Settings) wiring — opens from the top-left hamburger.
     const drawerEl = document.getElementById("drawer");
     const drawerBackdrop = document.getElementById("drawer-backdrop");