fix(vscode): claim a free display name and fix the Marketplace README links

.github/workflows/release-vscode-extension.yml

@@ -135,9 +135,14 @@ jobs:
       - name: Package VSIX
         id: pack
         working-directory: vscode-extension
+        # Through `package:vsix`, so the README base URLs are declared once. vsce
+        # ignores `repository.directory` (microsoft/vscode-vsce#980) and resolves
+        # a relative README link against the repository root, which for an
+        # extension in a subdirectory is one level too high — and it does so
+        # silently, shipping a 404 with no warning.
         run: |
           set -euo pipefail
-          vsce package --no-dependencies
+          pnpm run package:vsix
           shopt -s nullglob
           files=( *.vsix )
           if [[ ${#files[@]} -ne 1 ]]; then

docs/contributor/development/project-structure.md

@@ -59,4 +59,6 @@ The scope carries the organization and the name carries the role, so `@tumaet/ap
 
 Its Marketplace identity is `publisher.name` — `aet-tum.apollon-extension`, where `aet-tum` is the organization's publisher, alongside `aet-tum.iris-thaumantias`. `publisher` and `name` in `vscode-extension/package.json` are the only source for that identity: the release workflow reads both to decide which listing to query, which tag to cut, and what to print in the release notes. Changing either points the release at a different listing, and installed clients follow the identity, not the repository — a new identity reaches nobody who already has the extension.
 
-The name reads oddly for a package whose directory is `vscode-extension/`, and it cannot be improved. The Marketplace reserves an extension name across **all** publishers, and `apollon-vscode` is held by `tumaet.apollon-vscode` — an abandoned listing from `ls1intum/apollon-vscode`, the archived repository this workspace replaced. Publishing a new extension under that name fails with `The extension 'apollon-vscode' already exists in the Marketplace`. `aet-tum.apollon-extension` is the listing this project already owns, so releases update it in place and the installs it carries keep receiving them.
+The name reads oddly for a package whose directory is `vscode-extension/`, and it cannot be improved. The Marketplace reserves both an extension's `name` and its `displayName` across **all** publishers, and the abandoned `tumaet.apollon-vscode` listing — from `ls1intum/apollon-vscode`, the archived repository this workspace replaced — holds `apollon-vscode` and `Apollon` respectively. Claiming either fails at publish time, server-side, with `already exists in the Marketplace` or `This extension display name is taken`. So the manifest keeps `apollon-extension` / `Apollon - TUM`: the listing this project already owns, whose display name also matches its sibling `aet-tum.iris-thaumantias` (`Artemis - TUM`). Releases update that listing in place, and the installs it carries keep receiving them.
+
+`vsce` resolves relative README links against the repository root, ignoring `repository.directory` ([vscode-vsce#980](https://github.com/microsoft/vscode-vsce/issues/980)), so an extension in a subdirectory ships links one level too high — silently, with no warning. The `package:vsix` script therefore passes `--baseContentUrl` and `--baseImagesUrl` pointing at `vscode-extension/`, and the release workflow packages through that script rather than calling `vsce` itself. A README link may not escape the extension root either: `../LICENSE` survives verbatim into the URL, and GitHub does not normalize `..` in a blob path.

vscode-extension/README.md

@@ -13,7 +13,7 @@ Model UML diagrams directly in Visual Studio Code using the [Apollon](https://gi
 2. Open any `.apollon` file to edit it on the canvas. It behaves like any other editor: <kbd>Cmd/Ctrl+S</kbd> saves, the tab shows unsaved changes, and <kbd>Cmd/Ctrl+Z</kbd> undoes.
 3. To read or diff the raw JSON, use **Reopen Editor With… → Text Editor**.
 
-Supported diagram types match the [`@tumaet/apollon`](https://www.npmjs.com/package/@tumaet/apollon) library: class, object, activity, use case, communication, component, deployment, Petri net, reachability graph, syntax tree, flowchart, BPMN, and SFC.
+Supported diagram types match the [`@tumaet/apollon`](https://www.npmjs.com/package/@tumaet/apollon) library: class, object, activity, use case, communication, component, deployment, Petri net, reachability graph, syntax tree, flowchart, BPMN, and sequential function chart.
 
 ## Export
 
@@ -27,4 +27,4 @@ Run **Apollon: Export Diagram as Image** to write a sibling `.svg` or `.png` nex
 
 ## License
 
-MIT — see the monorepo [LICENSE](../LICENSE).
+MIT — see [LICENSE](./LICENSE.txt).

vscode-extension/package.json

@@ -1,6 +1,6 @@
 {
   "name": "apollon-extension",
-  "displayName": "Apollon",
+  "displayName": "Apollon - TUM",
   "description": "Embeddable UML modeling editor for VS Code. Create, edit, and export UML diagrams (class, component, activity, BPMN, and more) directly inside your editor.",
   "publisher": "aet-tum",
   "license": "MIT",
@@ -162,7 +162,7 @@
     "lint:fix": "eslint --fix src webview/src",
     "typecheck": "tsc -p tsconfig.json --noEmit && tsc -p webview/tsconfig.json --noEmit",
     "test": "vitest run",
-    "package:vsix": "vsce package --no-dependencies",
+    "package:vsix": "vsce package --no-dependencies --baseContentUrl https://github.com/ls1intum/Apollon/blob/main/vscode-extension --baseImagesUrl https://raw.githubusercontent.com/ls1intum/Apollon/main/vscode-extension",
     "start:webview": "pnpm --filter @tumaet/vscode-webview run start",
     "build:webview": "pnpm --filter @tumaet/vscode-webview run build",
     "build:all": "pnpm run build && pnpm run build:webview"