Editor support generalized: shared core, language server, Vim and VS Code (from dev eb5baf9cbe59)

doc/edit/ now holds a shared Python implementation of the language's
structural layer (klammertext_edit.py) and a dependency-free language
server (klammertext_ls.py), with integrations for Emacs, Sublime Text,
Vim, and Visual Studio Code.  The editor test suite in tst/ covers the
core's API and CLI, the language server protocol, the VS Code
extension, headless Vim, and Emacs byte-equality.

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

doc/edit/vscode/package.json

@@ -0,0 +1,85 @@
+{
+    "name": "klammertext",
+    "displayName": "Klammertext",
+    "description": "Klammertext language support: syntax highlighting, delimiter matching, structural reindentation, table alignment, and delimiter diagnostics.",
+    "version": "0.1.0",
+    "publisher": "klammertext",
+    "license": "SEE LICENSE IN THE KLAMMERTEXT DISTRIBUTION",
+    "engines": {
+        "vscode": "^1.75.0"
+    },
+    "categories": [
+        "Programming Languages"
+    ],
+    "main": "./extension.js",
+    "activationEvents": [
+        "onLanguage:klammertext"
+    ],
+    "capabilities": {
+        "untrustedWorkspaces": {
+            "supported": false,
+            "description": "The extension runs the Klammertext language server (a local Python process)."
+        }
+    },
+    "contributes": {
+        "languages": [
+            {
+                "id": "klammertext",
+                "aliases": [
+                    "Klammertext"
+                ],
+                "extensions": [
+                    ".kt",
+                    ".k"
+                ],
+                "configuration": "./language-configuration.json"
+            }
+        ],
+        "grammars": [
+            {
+                "language": "klammertext",
+                "scopeName": "text.klammertext",
+                "path": "./syntaxes/klammertext.tmLanguage.json"
+            }
+        ],
+        "commands": [
+            {
+                "command": "klammertext.jumpToMatch",
+                "title": "Klammertext: Jump to Matching Delimiter"
+            },
+            {
+                "command": "klammertext.alignTable",
+                "title": "Klammertext: Align Table"
+            }
+        ],
+        "keybindings": [
+            {
+                "command": "klammertext.jumpToMatch",
+                "key": "ctrl+alt+j",
+                "mac": "cmd+alt+j",
+                "when": "editorTextFocus && editorLangId == klammertext"
+            },
+            {
+                "command": "klammertext.alignTable",
+                "key": "ctrl+alt+a",
+                "mac": "cmd+alt+a",
+                "when": "editorTextFocus && editorLangId == klammertext"
+            }
+        ],
+        "configuration": {
+            "title": "Klammertext",
+            "properties": {
+                "klammertext.pythonPath": {
+                    "type": "string",
+                    "default": "python3",
+                    "description": "Python interpreter used to run the Klammertext language server."
+                },
+                "klammertext.serverPath": {
+                    "type": "string",
+                    "default": "",
+                    "description": "Full path to klammertext_ls.py.  Leave blank to auto-locate: a copy next to the extension, ../shared/ relative to it (the Klammertext repository layout), or $KLAMMERTEXT_HOME/doc/edit/shared/."
+                }
+            }
+        }
+    }
+}