VS Code extension installs via a hand-built .vsix (from dev 83e472a94ed3)

Folder copies into ~/.vscode/extensions no longer load in modern VS Code;
make_vsix.sh packages the extension (bash + python3 only) and the README
installs it with `code --install-extension`.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

doc/edit/vscode/make_vsix.sh

@@ -0,0 +1,89 @@
+#!/bin/bash
+# make_vsix.sh — package the Klammertext VS Code extension as klammertext.vsix.
+#
+# Modern VS Code loads only REGISTERED extensions: a folder merely copied
+# into ~/.vscode/extensions/ is ignored (and flagged in its .obsolete file),
+# so the extension must be installed as a .vsix:
+#
+#     ./make_vsix.sh
+#     code --install-extension klammertext.vsix
+#
+# A .vsix is a zip holding a two-file manifest plus the extension payload
+# under extension/.  This script builds it with bash + python3 only — no
+# npm, no vsce — matching the extension's no-dependency design.  The shared
+# core and language server are vendored into the payload: from this folder
+# if present (the editing-zip layout), else from ../shared (the repository
+# layout).
+
+set -e
+cd "$(dirname "$0")"
+
+OUT="$PWD/klammertext.vsix"
+STAGE="$(mktemp -d)"
+trap 'rm -rf "$STAGE"' EXIT
+
+mkdir -p "$STAGE/extension/syntaxes"
+cp package.json extension.js language-configuration.json README.md "$STAGE/extension/"
+cp syntaxes/klammertext.tmLanguage.json "$STAGE/extension/syntaxes/"
+for f in klammertext_edit.py klammertext_ls.py; do
+    if [ -f "$f" ]; then
+        cp "$f" "$STAGE/extension/"
+    elif [ -f "../shared/$f" ]; then
+        cp "../shared/$f" "$STAGE/extension/"
+    else
+        echo "make_vsix.sh: cannot find $f (looked here and in ../shared)" >&2
+        exit 1
+    fi
+done
+
+VERSION=$(python3 -c "import json; print(json.load(open('package.json'))['version'])")
+
+cat > "$STAGE/[Content_Types].xml" <<'EOF'
+<?xml version="1.0" encoding="utf-8"?>
+<Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types">
+  <Default Extension="json" ContentType="application/json"/>
+  <Default Extension="js" ContentType="application/javascript"/>
+  <Default Extension="md" ContentType="text/markdown"/>
+  <Default Extension="py" ContentType="text/x-python"/>
+  <Default Extension="vsixmanifest" ContentType="text/xml"/>
+</Types>
+EOF
+
+cat > "$STAGE/extension.vsixmanifest" <<EOF
+<?xml version="1.0" encoding="utf-8"?>
+<PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011">
+  <Metadata>
+    <Identity Language="en-US" Id="klammertext" Version="$VERSION" Publisher="klammertext"/>
+    <DisplayName>Klammertext</DisplayName>
+    <Description xml:space="preserve">Klammertext language support: syntax highlighting, delimiter matching, structural reindentation, table alignment, and delimiter diagnostics.</Description>
+    <Categories>Programming Languages</Categories>
+    <Properties>
+      <Property Id="Microsoft.VisualStudio.Code.Engine" Value="^1.75.0"/>
+      <Property Id="Microsoft.VisualStudio.Code.ExtensionDependencies" Value=""/>
+      <Property Id="Microsoft.VisualStudio.Code.ExtensionPack" Value=""/>
+      <Property Id="Microsoft.VisualStudio.Code.LocalizedLanguages" Value=""/>
+    </Properties>
+  </Metadata>
+  <Installation>
+    <InstallationTarget Id="Microsoft.VisualStudio.Code"/>
+  </Installation>
+  <Dependencies/>
+  <Assets>
+    <Asset Type="Microsoft.VisualStudio.Code.Manifest" Path="extension/package.json" Addressable="true"/>
+    <Asset Type="Microsoft.VisualStudio.Services.Content.Details" Path="extension/README.md" Addressable="true"/>
+  </Assets>
+</PackageManifest>
+EOF
+
+python3 - "$STAGE" "$OUT" <<'EOF'
+import os, sys, zipfile
+stage, out = sys.argv[1], sys.argv[2]
+with zipfile.ZipFile(out, 'w', zipfile.ZIP_DEFLATED) as z:
+    for root, _dirs, files in os.walk(stage):
+        for f in sorted(files):
+            full = os.path.join(root, f)
+            z.write(full, os.path.relpath(full, stage))
+EOF
+
+echo "Created $OUT"
+echo "Install with:  code --install-extension $OUT"