Release diagram Tools v0.1.0

2026-09-01 14:10:51 +02:00
commit b78f20f66a
57 changed files with 8273 additions and 0 deletions
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 node_modules/
 dist/
 release/*.zip
 release/*.zip.sha256
 coverage/
 playwright-report/
 test-results/
 *.tsbuildinfo
 .DS_Store
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@add-ideas:registry=https://git.add-ideas.de/api/packages/lotobo/npm/
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 # Changelog
 ## 0.1.0 - 2026-09-01
 - Add bounded flowchart, sequence, class and state parser/layout.
 - Add diagnostics, pan/zoom, outline, SVG/PNG exports, PWA and release verification.
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 # Contributing
 Keep grammar explicit, bounded and script-free. New syntax needs parser, escaping, layout and browser tests. Contributions are GPL-3.0-or-later.
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  If the program does terminal interaction, make it output a short
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    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
@@ -0,0 +1,3 @@
 # Runtime licences
 Generated runtime licence texts accompany releases.
@@ -0,0 +1,7 @@
 # Diagram Tools
 Diagram Tools is a GPL-3.0-or-later local text/visual editor with an independent safe Mermaid-like subset for flowchart/graph, sequence, class and state diagrams. It produces deterministic SVG, a local 2× PNG, syntax diagnostics, scroll/drag pan, 25–300% zoom and an accessible textual outline.
 Supported syntax is deliberately small: node declarations/shapes and four edge styles; participants/messages; class declarations/members/relations; state nodes/transitions. Directives, clicks, styles, scripts, HTML and remote assets are rejected. Caps: 50,000 characters, 2,000 lines, 200 nodes, 500 edges, 2,400 px layout edge and 20 megapixel PNG.
 Run `npm ci`, `npm run check`, `npm run test:browser`, then `npm run package:release -- --force`.
@@ -0,0 +1,3 @@
 # Security
 Report privately through Gitea. Source is untrusted and never interpreted as HTML/code. Active directives and remote assets are unsupported; generated SVG contains escaped text and fixed elements only.
@@ -0,0 +1,3 @@
 # Source identity
 Diagram Tools 0.1.0 · `de.add-ideas.diagram-tools` · https://git.add-ideas.de/lotobo/diagram-tools · GPL-3.0-or-later. Deterministic releases normalize file order, time and permissions and add SHA-256.
@@ -0,0 +1,3 @@
 # Third-party notices
 Bundled runtime: React/React DOM (MIT) and add·ideas Toolbox Contract/Shell/Helpers (GPL-3.0-or-later). Exact runtime texts are generated into releases.
@@ -0,0 +1,3 @@
 # Accessibility
 The editor, buttons, zoom and diagnostics use native controls with visible focus. Every visual diagram has a textual node/member/edge outline. The studio reflows on small screens and follows shell themes.
@@ -0,0 +1,3 @@
 # Architecture
 `core/diagram.ts` parses one fixed grammar into nodes, edges and line diagnostics, then lays it out deterministically as escaped SVG. Sequence diagrams use lifelines; other modes use a bounded grid. React shows the last successful SVG after errors and delegates PNG rasterization to a local canvas.
@@ -0,0 +1,3 @@
 # Privacy and security
 Source remains in memory; explicit SVG/PNG downloads are the only output. There is no telemetry, remote asset resolution, HTML injection, eval, directive execution or URL fetch. Complexity and raster output are capped.
@@ -0,0 +1,37 @@
 import js from "@eslint/js";
 import globals from "globals";
 import reactHooks from "eslint-plugin-react-hooks";
 import reactRefresh from "eslint-plugin-react-refresh";
 import tseslint from "typescript-eslint";
 export default tseslint.config(
  {
    ignores: [
      "dist",
      "release",
      "coverage",
      "test-results",
      "playwright-report",
    ],
  },
  {
    extends: [js.configs.recommended, ...tseslint.configs.recommended],
    files: ["**/*.{ts,tsx}"],
    languageOptions: {
      ecmaVersion: 2023,
      globals: { ...globals.browser, ...globals.worker },
    },
    plugins: { "react-hooks": reactHooks, "react-refresh": reactRefresh },
    rules: {
      ...reactHooks.configs.recommended.rules,
      "react-refresh/only-export-components": [
        "warn",
        { allowConstantExport: true },
      ],
    },
  },
  {
    files: ["scripts/**/*.mjs", "playwright.config.ts"],
    languageOptions: { globals: globals.node },
  },
 );
@@ -0,0 +1,15 @@
 <!doctype html>
 <html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width,initial-scale=1" />
    <meta name="theme-color" content="#24172c" />
    <link rel="icon" href="./favicon.svg" type="image/svg+xml" />
    <link rel="manifest" href="./manifest.webmanifest" />
    <title>Diagram Tools</title>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="/src/main.tsx"></script>
  </body>
 </html>
@@ -0,0 +1,66 @@
 {
  "name": "diagram-tools",
  "version": "0.1.0",
  "description": "Create safe deterministic diagrams locally.",
  "license": "GPL-3.0-or-later",
  "author": "Albrecht Degering",
  "repository": {
    "type": "git",
    "url": "git+https://git.add-ideas.de/lotobo/diagram-tools.git"
  },
  "homepage": "https://git.add-ideas.de/lotobo/diagram-tools",
  "private": true,
  "type": "module",
  "engines": {
    "node": ">=22"
  },
  "scripts": {
    "predev": "npm run manifest:generate",
    "dev": "vite",
    "prebuild": "npm run release:prepare && npm run manifest:generate",
    "build": "tsc -b && vite build",
    "typecheck": "tsc -b --pretty false",
    "lint": "eslint . --max-warnings=0",
    "format": "prettier --write .",
    "format:check": "prettier --check .",
    "test": "vitest run",
    "test:browser": "playwright test",
    "manifest:generate": "node scripts/generate-toolbox-manifest.mjs",
    "manifest:check": "node scripts/generate-toolbox-manifest.mjs --check",
    "release:prepare": "node scripts/prepare-release-files.mjs",
    "toolbox:check": "toolbox-check dist",
    "package:release": "node scripts/package-release.mjs",
    "check": "npm run manifest:check && npm run typecheck && npm run lint && npm run format:check && npm run test && npm run build && npm run toolbox:check",
    "release:artifact": "npm run check && npm run test:browser && npm run package:release -- --force"
  },
  "dependencies": {
    "@add-ideas/toolbox-contract": "0.2.3",
    "@add-ideas/toolbox-helpers": "0.1.0",
    "@add-ideas/toolbox-shell-react": "0.2.3",
    "react": "19.2.8",
    "react-dom": "19.2.8"
  },
  "devDependencies": {
    "@add-ideas/toolbox-testkit": "0.2.3",
    "@eslint/js": "10.0.1",
    "@playwright/test": "1.62.1",
    "@testing-library/jest-dom": "6.9.1",
    "@testing-library/react": "16.3.2",
    "@testing-library/user-event": "14.6.1",
    "@types/node": "25.9.5",
    "@types/react": "19.2.17",
    "@types/react-dom": "19.2.5",
    "@vitejs/plugin-react": "6.0.3",
    "eslint": "10.7.0",
    "eslint-plugin-react-hooks": "7.1.1",
    "eslint-plugin-react-refresh": "0.5.2",
    "globals": "17.7.0",
    "jsdom": "29.1.1",
    "prettier": "3.9.5",
    "typescript": "6.0.3",
    "typescript-eslint": "8.64.0",
    "vite": "8.2.2",
    "vitest": "4.1.11"
  },
  "packageManager": "npm@11.17.0"
 }
@@ -0,0 +1,18 @@
 import { defineConfig, devices } from "@playwright/test";
 export default defineConfig({
  testDir: "./tests/browser",
  workers: 1,
  timeout: 120000,
  expect: { timeout: 10000 },
  use: { baseURL: "http://127.0.0.1:4222" },
  webServer: {
    command: "npm run build && node scripts/serve-test.mjs",
    url: "http://127.0.0.1:4222",
    reuseExistingServer: !process.env.CI,
    timeout: 180000,
  },
  projects: [
    { name: "chromium", use: { ...devices["Desktop Chrome"] } },
    { name: "firefox", use: { ...devices["Desktop Firefox"] } },
  ],
 });
@@ -0,0 +1,6 @@
 # Changelog
 ## 0.1.0 - 2026-09-01
 - Add bounded flowchart, sequence, class and state parser/layout.
 - Add diagnostics, pan/zoom, outline, SVG/PNG exports, PWA and release verification.
@@ -0,0 +1,3 @@
 # Contributing
 Keep grammar explicit, bounded and script-free. New syntax needs parser, escaping, layout and browser tests. Contributions are GPL-3.0-or-later.
@@ -0,0 +1,674 @@
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
 Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
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 share and change all versions of a program--to make sure it remains free
 software for all its users.  We, the Free Software Foundation, use the
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  When we speak of free software, we are referring to freedom, not
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  Developers that use the GNU GPL protect your rights with two steps:
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 covered work, you indicate your acceptance of this License to do so.
  10. Automatic Licensing of Downstream Recipients.
  Each time you convey a covered work, the recipient automatically
 receives a license from the original licensors, to run, modify and
 propagate that work, subject to this License.  You are not responsible
 for enforcing compliance by third parties with this License.
  An "entity transaction" is a transaction transferring control of an
 organization, or substantially all assets of one, or subdividing an
 organization, or merging organizations.  If propagation of a covered
 work results from an entity transaction, each party to that
 transaction who receives a copy of the work also receives whatever
 licenses to the work the party's predecessor in interest had or could
 give under the previous paragraph, plus a right to possession of the
 Corresponding Source of the work from the predecessor in interest, if
 the predecessor has it or can get it with reasonable efforts.
  You may not impose any further restrictions on the exercise of the
 rights granted or affirmed under this License.  For example, you may
 not impose a license fee, royalty, or other charge for exercise of
 rights granted under this License, and you may not initiate litigation
 (including a cross-claim or counterclaim in a lawsuit) alleging that
 any patent claim is infringed by making, using, selling, offering for
 sale, or importing the Program or any portion of it.
  11. Patents.
  A "contributor" is a copyright holder who authorizes use under this
 License of the Program or a work on which the Program is based.  The
 work thus licensed is called the contributor's "contributor version".
  A contributor's "essential patent claims" are all patent claims
 owned or controlled by the contributor, whether already acquired or
 hereafter acquired, that would be infringed by some manner, permitted
 by this License, of making, using, or selling its contributor version,
 but do not include claims that would be infringed only as a
 consequence of further modification of the contributor version.  For
 purposes of this definition, "control" includes the right to grant
 patent sublicenses in a manner consistent with the requirements of
 this License.
  Each contributor grants you a non-exclusive, worldwide, royalty-free
 patent license under the contributor's essential patent claims, to
 make, use, sell, offer for sale, import and otherwise run, modify and
 propagate the contents of its contributor version.
  In the following three paragraphs, a "patent license" is any express
 agreement or commitment, however denominated, not to enforce a patent
 (such as an express permission to practice a patent or covenant not to
 sue for patent infringement).  To "grant" such a patent license to a
 party means to make such an agreement or commitment not to enforce a
 patent against the party.
  If you convey a covered work, knowingly relying on a patent license,
 and the Corresponding Source of the work is not available for anyone
 to copy, free of charge and under the terms of this License, through a
 publicly available network server or other readily accessible means,
 then you must either (1) cause the Corresponding Source to be so
 available, or (2) arrange to deprive yourself of the benefit of the
 patent license for this particular work, or (3) arrange, in a manner
 consistent with the requirements of this License, to extend the patent
 license to downstream recipients.  "Knowingly relying" means you have
 actual knowledge that, but for the patent license, your conveying the
 covered work in a country, or your recipient's use of the covered work
 in a country, would infringe one or more identifiable patents in that
 country that you have reason to believe are valid.
  If, pursuant to or in connection with a single transaction or
 arrangement, you convey, or propagate by procuring conveyance of, a
 covered work, and grant a patent license to some of the parties
 receiving the covered work authorizing them to use, propagate, modify
 or convey a specific copy of the covered work, then the patent license
 you grant is automatically extended to all recipients of the covered
 work and works based on it.
  A patent license is "discriminatory" if it does not include within
 the scope of its coverage, prohibits the exercise of, or is
 conditioned on the non-exercise of one or more of the rights that are
 specifically granted under this License.  You may not convey a covered
 work if you are a party to an arrangement with a third party that is
 in the business of distributing software, under which you make payment
 to the third party based on the extent of your activity of conveying
 the work, and under which the third party grants, to any of the
 parties who would receive the covered work from you, a discriminatory
 patent license (a) in connection with copies of the covered work
 conveyed by you (or copies made from those copies), or (b) primarily
 for and in connection with specific products or compilations that
 contain the covered work, unless you entered into that arrangement,
 or that patent license was granted, prior to 28 March 2007.
  Nothing in this License shall be construed as excluding or limiting
 any implied license or other defenses to infringement that may
 otherwise be available to you under applicable patent law.
  12. No Surrender of Others' Freedom.
  If conditions are imposed on you (whether by court order, agreement or
 otherwise) that contradict the conditions of this License, they do not
 excuse you from the conditions of this License.  If you cannot convey a
 covered work so as to satisfy simultaneously your obligations under this
 License and any other pertinent obligations, then as a consequence you may
 not convey it at all.  For example, if you agree to terms that obligate you
 to collect a royalty for further conveying from those to whom you convey
 the Program, the only way you could satisfy both those terms and this
 License would be to refrain entirely from conveying the Program.
  13. Use with the GNU Affero General Public License.
  Notwithstanding any other provision of this License, you have
 permission to link or combine any covered work with a work licensed
 under version 3 of the GNU Affero General Public License into a single
 combined work, and to convey the resulting work.  The terms of this
 License will continue to apply to the part which is the covered work,
 but the special requirements of the GNU Affero General Public License,
 section 13, concerning interaction through a network will apply to the
 combination as such.
  14. Revised Versions of this License.
  The Free Software Foundation may publish revised and/or new versions of
 the GNU General Public License from time to time.  Such new versions will
 be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
  Each version is given a distinguishing version number.  If the
 Program specifies that a certain numbered version of the GNU General
 Public License "or any later version" applies to it, you have the
 option of following the terms and conditions either of that numbered
 version or of any later version published by the Free Software
 Foundation.  If the Program does not specify a version number of the
 GNU General Public License, you may choose any version ever published
 by the Free Software Foundation.
  If the Program specifies that a proxy can decide which future
 versions of the GNU General Public License can be used, that proxy's
 public statement of acceptance of a version permanently authorizes you
 to choose that version for the Program.
  Later license versions may give you additional or different
 permissions.  However, no additional obligations are imposed on any
 author or copyright holder as a result of your choosing to follow a
 later version.
  15. Disclaimer of Warranty.
  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
 APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
 HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
 OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
 IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
 ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  16. Limitation of Liability.
  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
 THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
 GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
 USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
 DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
 PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
 EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
 SUCH DAMAGES.
  17. Interpretation of Sections 15 and 16.
  If the disclaimer of warranty and limitation of liability provided
 above cannot be given local legal effect according to their terms,
 reviewing courts shall apply local law that most closely approximates
 an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
                     END OF TERMS AND CONDITIONS
            How to Apply These Terms to Your New Programs
  If you develop a new program, and you want it to be of the greatest
 possible use to the public, the best way to achieve this is to make it
 free software which everyone can redistribute and change under these terms.
  To do so, attach the following notices to the program.  It is safest
 to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
  If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
    <program>  Copyright (C) <year>  <name of author>
    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.
 The hypothetical commands `show w' and `show c' should show the appropriate
 parts of the General Public License.  Of course, your program's commands
 might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
 <https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
 <https://www.gnu.org/licenses/why-not-lgpl.html>.
@@ -0,0 +1,3 @@
 # Runtime licences
 Generated runtime licence texts accompany releases.
@@ -0,0 +1,7 @@
 # Diagram Tools
 Diagram Tools is a GPL-3.0-or-later local text/visual editor with an independent safe Mermaid-like subset for flowchart/graph, sequence, class and state diagrams. It produces deterministic SVG, a local 2× PNG, syntax diagnostics, scroll/drag pan, 25–300% zoom and an accessible textual outline.
 Supported syntax is deliberately small: node declarations/shapes and four edge styles; participants/messages; class declarations/members/relations; state nodes/transitions. Directives, clicks, styles, scripts, HTML and remote assets are rejected. Caps: 50,000 characters, 2,000 lines, 200 nodes, 500 edges, 2,400 px layout edge and 20 megapixel PNG.
 Run `npm ci`, `npm run check`, `npm run test:browser`, then `npm run package:release -- --force`.
@@ -0,0 +1,3 @@
 # Security
 Report privately through Gitea. Source is untrusted and never interpreted as HTML/code. Active directives and remote assets are unsupported; generated SVG contains escaped text and fixed elements only.
@@ -0,0 +1,3 @@
 # Source identity
 Diagram Tools 0.1.0 · `de.add-ideas.diagram-tools` · https://git.add-ideas.de/lotobo/diagram-tools · GPL-3.0-or-later. Deterministic releases normalize file order, time and permissions and add SHA-256.
@@ -0,0 +1,3 @@
 # Third-party notices
 Bundled runtime: React/React DOM (MIT) and add·ideas Toolbox Contract/Shell/Helpers (GPL-3.0-or-later). Exact runtime texts are generated into releases.
@@ -0,0 +1,3 @@
 # Accessibility
 The editor, buttons, zoom and diagnostics use native controls with visible focus. Every visual diagram has a textual node/member/edge outline. The studio reflows on small screens and follows shell themes.
@@ -0,0 +1,3 @@
 # Architecture
 `core/diagram.ts` parses one fixed grammar into nodes, edges and line diagnostics, then lays it out deterministically as escaped SVG. Sequence diagrams use lifelines; other modes use a bounded grid. React shows the last successful SVG after errors and delegates PNG rasterization to a local canvas.
@@ -0,0 +1,3 @@
 # Privacy and security
 Source remains in memory; explicit SVG/PNG downloads are the only output. There is no telemetry, remote asset resolution, HTML injection, eval, directive execution or URL fetch. Complexity and raster output are capped.
@@ -0,0 +1 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><rect width="64" height="64" rx="14" fill="#24172c"/><rect x="9" y="12" width="17" height="14" rx="3" fill="#e9d5ff"/><rect x="38" y="38" width="17" height="14" rx="3" fill="#e9d5ff"/><circle cx="47" cy="18" r="8" fill="#c084fc"/><path d="M26 19h13M47 26v12M21 26l20 13" stroke="#fff" stroke-width="3" fill="none"/></svg>
@@ -0,0 +1,10 @@
 {
  "name": "Diagram Tools",
  "short_name": "Diagrams",
  "start_url": "./",
  "scope": "./",
  "display": "standalone",
  "background_color": "#24172c",
  "theme_color": "#24172c",
  "icons": [{ "src": "./favicon.svg", "sizes": "any", "type": "image/svg+xml" }]
 }
@@ -0,0 +1,65 @@
 const CACHE = "diagram-tools-v0.1.0",
  APP = [
    "./",
    "./index.html",
    "./manifest.webmanifest",
    "./favicon.svg",
    "./toolbox-app.json",
  ];
 async function precacheAppShell() {
  const cache = await caches.open(CACHE);
  await cache.addAll(APP);
  const index = await cache.match("./index.html");
  if (index) {
    const markup = await index.text();
    const scope = new URL(self.registration.scope);
    const assets = [...markup.matchAll(/\b(?:src|href)=["']([^"'#]+)["']/g)]
      .map((match) => new URL(match[1], self.location.href))
      .filter(
        (url) =>
          url.origin === scope.origin &&
          url.pathname.startsWith(scope.pathname),
      );
    await cache.addAll(assets);
  }
 }
 self.addEventListener("install", (e) =>
  e.waitUntil(precacheAppShell().then(() => self.skipWaiting())),
 );
 self.addEventListener("activate", (e) =>
  e.waitUntil(
    caches
      .keys()
      .then((k) =>
        Promise.all(k.filter((x) => x !== CACHE).map((x) => caches.delete(x))),
      )
      .then(() => self.clients.claim()),
  ),
 );
 self.addEventListener("fetch", (e) => {
  if (
    e.request.method !== "GET" ||
    new URL(e.request.url).origin !== self.location.origin
  )
    return;
  e.respondWith(
    (async () => {
      const cached = await caches.match(e.request);
      if (cached) return cached;
      try {
        const response = await fetch(e.request);
        if (response.ok) {
          const cache = await caches.open(CACHE);
          await cache.put(e.request, response.clone());
        }
        return response;
      } catch (error) {
        if (e.request.mode === "navigate") {
          const fallback = await caches.match("./index.html");
          if (fallback) return fallback;
        }
        throw error;
      }
    })(),
  );
 });
@@ -0,0 +1,41 @@
 {
  "$schema": "https://git.add-ideas.de/lotobo/toolbox-sdk/raw/branch/main/schemas/toolbox-app.v1.schema.json",
  "schemaVersion": 1,
  "id": "de.add-ideas.diagram-tools",
  "name": "Diagram Tools",
  "version": "0.1.0",
  "description": "Create safe diagrams locally.",
  "entry": "./",
  "icon": "./favicon.svg",
  "categories": ["graphics", "developer", "productivity"],
  "tags": ["diagram", "flowchart", "sequence", "class", "state", "svg"],
  "integration": {
    "contextVersion": 1,
    "launchModes": ["navigate", "new-tab"],
    "embedding": "unsupported"
  },
  "requirements": {
    "secureContext": false,
    "workers": false,
    "indexedDb": false,
    "crossOriginIsolated": false,
    "topLevelContext": false
  },
  "privacy": {
    "processing": "local",
    "fileUploads": false,
    "telemetry": false,
    "label": "Diagram source and exports remain local."
  },
  "source": {
    "repository": "https://git.add-ideas.de/lotobo/diagram-tools",
    "license": "GPL-3.0-or-later"
  },
  "actions": [
    {
      "id": "source",
      "label": "Source",
      "url": "https://git.add-ideas.de/lotobo/diagram-tools"
    }
  ]
 }
@@ -0,0 +1,33 @@
 import { readFile, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 import { format } from "prettier";
 const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
 const sourcePath = path.join(root, "src/toolbox/manifest.source.json");
 const outputPath = path.join(root, "public/toolbox-app.json");
 const source = JSON.parse(await readFile(sourcePath, "utf8"));
 const pkg = JSON.parse(await readFile(path.join(root, "package.json"), "utf8"));
 const versionSource = await readFile(path.join(root, "src/version.ts"), "utf8");
 const appVersion = /^export const APP_VERSION = "([^"]+)";$/mu.exec(
  versionSource,
 )?.[1];
 const repository = "https://git.add-ideas.de/lotobo/" + pkg.name;
 if (source.version !== pkg.version || appVersion !== pkg.version)
  throw new Error("Version identity drift");
 if (
  source.id !== "de.add-ideas." + pkg.name ||
  source.source?.repository !== repository ||
  source.source?.license !== "GPL-3.0-or-later"
 )
  throw new Error("Manifest source identity is invalid");
 const serialized = await format(JSON.stringify(source), {
  filepath: outputPath,
 });
 if (process.argv.includes("--check")) {
  if ((await readFile(outputPath, "utf8").catch(() => "")) !== serialized)
    throw new Error("public/toolbox-app.json is stale");
  console.log("Toolbox manifest is synchronized");
 } else {
  await writeFile(outputPath, serialized);
  console.log("Generated public/toolbox-app.json");
 }
@@ -0,0 +1,165 @@
 #!/usr/bin/env node
 import { createHash } from "node:crypto";
 import { execFile } from "node:child_process";
 import {
  access,
  chmod,
  copyFile,
  cp,
  lstat,
  mkdir,
  mkdtemp,
  readFile,
  readdir,
  rename,
  rm,
  utimes,
  writeFile,
 } from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
 import { promisify } from "node:util";
 import { fileURLToPath } from "node:url";
 const execute = promisify(execFile);
 const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
 const pkg = JSON.parse(await readFile(path.join(root, "package.json"), "utf8"));
 const argument = (name, fallback) => {
  const index = process.argv.indexOf(name);
  return index >= 0 ? process.argv[index + 1] : fallback;
 };
 const output = path.resolve(
  root,
  argument("--output", "release/" + pkg.name + "-" + pkg.version + ".zip"),
 );
 const checksumOutput = output + ".sha256";
 const force = process.argv.includes("--force");
 if (
  path.extname(output).toLowerCase() !== ".zip" ||
  output === root ||
  output === path.parse(output).root
 )
  throw new Error("Unsafe release target");
 const exists = (file) =>
  access(file).then(
    () => true,
    () => false,
  );
 if (!force && ((await exists(output)) || (await exists(checksumOutput))))
  throw new Error("Release output exists");
 const input = path.join(root, "dist");
 for (const name of [
  "index.html",
  "manifest.webmanifest",
  "sw.js",
  "toolbox-app.json",
  "favicon.svg",
  "README.md",
  "CHANGELOG.md",
  "CONTRIBUTING.md",
  "LICENSE",
  "SECURITY.md",
  "SOURCE.md",
  "THIRD_PARTY_NOTICES.md",
  "LICENSES/README.md",
  "LICENSES/npm-runtime-licenses.txt",
  "docs/ACCESSIBILITY.md",
  "docs/ARCHITECTURE.md",
  "docs/PRIVACY-SECURITY.md",
 ]) {
  const details = await lstat(path.join(input, name)).catch(() => null);
  if (!details?.isFile() || details.isSymbolicLink())
    throw new Error("Missing release file: " + name);
 }
 const manifest = JSON.parse(
  await readFile(path.join(input, "toolbox-app.json"), "utf8"),
 );
 const repository = "https://git.add-ideas.de/lotobo/" + pkg.name;
 if (
  manifest.id !== "de.add-ideas." + pkg.name ||
  manifest.version !== pkg.version ||
  manifest.entry !== "./" ||
  manifest.icon !== "./favicon.svg" ||
  manifest.source?.repository !== repository
 )
  throw new Error("Packaged manifest identity is invalid");
 if (
  /\b(?:src|href)=["']\//iu.test(
    await readFile(path.join(input, "index.html"), "utf8"),
  )
 )
  throw new Error("Root-absolute asset reference");
 async function collect(directory, prefix = "") {
  const files = [];
  for (const entry of (await readdir(directory, { withFileTypes: true })).sort(
    (a, b) => (a.name === b.name ? 0 : a.name < b.name ? -1 : 1),
  )) {
    const absolute = path.join(directory, entry.name);
    const relative = prefix ? prefix + "/" + entry.name : entry.name;
    if (entry.isSymbolicLink())
      throw new Error("Symlink in release: " + relative);
    if (entry.isDirectory()) files.push(...(await collect(absolute, relative)));
    else if (entry.isFile()) files.push({ absolute, relative });
    else throw new Error("Unsupported release entry: " + relative);
  }
  return files;
 }
 const sourceFiles = await collect(input);
 for (const file of sourceFiles)
  if (
    file.relative.endsWith(".map") ||
    /(?:^|\/)(?:\.env(?:\.|$)|id_rsa|id_ed25519|.*\.pem$|.*\.key$)/iu.test(
      file.relative,
    ) ||
    file.relative.split("/").includes("..")
  )
    throw new Error("Forbidden release entry: " + file.relative);
 await mkdir(path.dirname(output), { recursive: true });
 const stagingRoot = await mkdtemp(
  path.join(os.tmpdir(), pkg.name + "-release-"),
 );
 const publicationRoot = await mkdtemp(
  path.join(path.dirname(output), "." + pkg.name + "-publish-"),
 );
 const stagedTree = path.join(stagingRoot, "tree");
 const stagedArchive = path.join(stagingRoot, path.basename(output));
 try {
  await cp(input, stagedTree, { recursive: true });
  const timestamp = new Date("1980-01-01T00:00:00.000Z");
  for (const file of await collect(stagedTree)) {
    await chmod(file.absolute, 0o644);
    await utimes(file.absolute, timestamp, timestamp);
  }
  await execute(
    "zip",
    [
      "-X",
      "-q",
      "-9",
      stagedArchive,
      ...sourceFiles.map((file) => file.relative),
    ],
    {
      cwd: stagedTree,
      env: { ...process.env, TZ: "UTC" },
      maxBuffer: 1024 * 1024,
    },
  );
  const archive = await readFile(stagedArchive);
  const digest = createHash("sha256").update(archive).digest("hex");
  const stagedChecksum = stagedArchive + ".sha256";
  await writeFile(stagedChecksum, digest + "  " + path.basename(output) + "\n");
  const publicationArchive = path.join(publicationRoot, path.basename(output));
  const publicationChecksum = publicationArchive + ".sha256";
  await copyFile(stagedArchive, publicationArchive);
  await copyFile(stagedChecksum, publicationChecksum);
  if (force) {
    await rm(output, { force: true });
    await rm(checksumOutput, { force: true });
  }
  await rename(publicationArchive, output);
  await rename(publicationChecksum, checksumOutput);
  console.log("Created " + path.relative(root, output) + "\nSHA-256 " + digest);
 } finally {
  await rm(stagingRoot, { recursive: true, force: true });
  await rm(publicationRoot, { recursive: true, force: true });
 }
@@ -0,0 +1,70 @@
 import { cp, mkdir, readFile, readdir, rm, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
 const destination = path.join(root, "public");
 for (const name of [
  "LICENSE",
  "README.md",
  "CHANGELOG.md",
  "CONTRIBUTING.md",
  "SECURITY.md",
  "SOURCE.md",
  "THIRD_PARTY_NOTICES.md",
 ]) {
  await readFile(path.join(root, name));
  await cp(path.join(root, name), path.join(destination, name));
 }
 for (const directory of ["LICENSES", "docs"]) {
  const output = path.join(destination, directory);
  await rm(output, { recursive: true, force: true });
  await cp(path.join(root, directory), output, { recursive: true });
 }
 const lock = JSON.parse(
  await readFile(path.join(root, "package-lock.json"), "utf8"),
 );
 const sections = [];
 for (const [location, locked] of Object.entries(lock.packages ?? {}).sort(
  ([a], [b]) => (a === b ? 0 : a < b ? -1 : 1),
 )) {
  if (!location.includes("node_modules/") || locked.dev === true) continue;
  const packageDirectory = path.join(root, location);
  const details = JSON.parse(
    await readFile(path.join(packageDirectory, "package.json"), "utf8"),
  );
  const candidates = (await readdir(packageDirectory))
    .filter((name) => /^(?:licen[cs]e|copying|notice)(?:\.|$)/iu.test(name))
    .sort();
  const texts = [];
  for (const candidate of candidates) {
    try {
      texts.push(
        "--- " +
          candidate +
          " ---\n" +
          (await readFile(path.join(packageDirectory, candidate), "utf8")),
      );
    } catch {
      /* directory */
    }
  }
  sections.push(
    "=".repeat(78) +
      "\n" +
      details.name +
      "@" +
      details.version +
      "\nDeclared licence: " +
      (details.license ?? locked.license ?? "See upstream") +
      "\n" +
      "=".repeat(78) +
      "\n" +
      (texts.join("\n\n") || "See upstream package metadata."),
  );
 }
 await mkdir(path.join(destination, "LICENSES"), { recursive: true });
 await writeFile(
  path.join(destination, "LICENSES/npm-runtime-licenses.txt"),
  sections.join("\n\n").trimEnd() + "\n",
 );
 console.log("Prepared release documentation");
@@ -0,0 +1,47 @@
 import { createServer } from "node:http";
 import { readFile, stat } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 const root = path.resolve(
    path.dirname(fileURLToPath(import.meta.url)),
    "..",
    "dist",
  ),
  prefix = "/deep/nested/diagram/",
  types = new Map([
    [".css", "text/css"],
    [".html", "text/html"],
    [".js", "text/javascript"],
    [".json", "application/json"],
    [".webmanifest", "application/manifest+json"],
    [".svg", "image/svg+xml"],
    [".md", "text/markdown"],
    [".txt", "text/plain"],
  ]),
  headers = {
    "Content-Security-Policy":
      "default-src 'self';base-uri 'self';object-src 'none';script-src 'self';style-src 'self' 'unsafe-inline';img-src 'self' data: blob:;connect-src 'self';worker-src 'self' blob:;manifest-src 'self'",
    "Permissions-Policy": "camera=(),microphone=(),geolocation=()",
    "Referrer-Policy": "no-referrer",
    "X-Content-Type-Options": "nosniff",
  };
 createServer(async (q, s) => {
  try {
    const u = new URL(q.url ?? "/", "http://x"),
      d = decodeURIComponent(u.pathname),
      r = d.startsWith(prefix) ? d.slice(prefix.length) : d.replace(/^\/+/, ""),
      n = path.posix.normalize(r || "index.html");
    if (n.startsWith("../") || path.isAbsolute(n))
      return void s.writeHead(400).end();
    let f = path.join(root, n);
    if ((await stat(f).catch(() => null))?.isDirectory())
      f = path.join(f, "index.html");
    s.writeHead(200, {
      "Content-Type": types.get(path.extname(f)) ?? "application/octet-stream",
      ...headers,
    });
    s.end(await readFile(f));
  } catch {
    s.writeHead(404).end();
  }
 }).listen(4222, "127.0.0.1", () => console.log("ready"));
@@ -0,0 +1,23 @@
 import { useState } from "react";
 import { AppShell } from "@add-ideas/toolbox-shell-react";
 import "@add-ideas/toolbox-shell-react/styles.css";
 import "./styles.css";
 import { ErrorBoundary } from "./components/ErrorBoundary";
 import { HelpDialog } from "./components/HelpDialog";
 import { Workbench } from "./components/Workbench";
 import { manifest } from "./toolbox/manifest";
 export function App() {
  const [h, setH] = useState(false);
  return (
    <ErrorBoundary>
      <AppShell
        app={manifest}
        manifestUrl="./toolbox-app.json"
        helpAction={{ onClick: () => setH(true) }}
      >
        <Workbench />
      </AppShell>
      <HelpDialog open={h} onClose={() => setH(false)} />
    </ErrorBoundary>
  );
 }
@@ -0,0 +1,27 @@
 import { Component, type ErrorInfo, type ReactNode } from "react";
 export class ErrorBoundary extends Component<
  { children: ReactNode },
  { error?: Error }
 > {
  state: { error?: Error } = {};
  static getDerivedStateFromError(error: Error) {
    return { error };
  }
  componentDidCatch(error: Error, info: ErrorInfo) {
    console.error("Application failure", error, info);
  }
  render() {
    if (this.state.error)
      return (
        <main className="fatal">
          <h1>Diagram Tools could not continue</h1>
          <p>{this.state.error.message}</p>
          <button type="button" onClick={() => location.reload()}>
            Reload
          </button>
        </main>
      );
    return this.props.children;
  }
 }
@@ -0,0 +1,35 @@
 import { useEffect, useRef } from "react";
 export function HelpDialog({
  open,
  onClose,
 }: {
  open: boolean;
  onClose: () => void;
 }) {
  const r = useRef<HTMLDialogElement>(null);
  useEffect(() => {
    if (open && !r.current?.open) r.current?.showModal();
    else if (!open && r.current?.open) r.current.close();
  }, [open]);
  return (
    <dialog
      ref={r}
      onClose={onClose}
      onCancel={onClose}
      aria-label="About Diagram Tools"
    >
      <button onClick={onClose}>×</button>
      <h2>Diagram Tools</h2>
      <p>
        The syntax resembles a small familiar Mermaid subset but uses an
        independent parser and deterministic SVG layout. Flowchart/graph,
        sequence, class and state headers are supported.
      </p>
      <p>
        Directives, clicks, styling commands, scripts and remote assets are
        rejected. Use the accessible outline when the visual canvas is
        inconvenient.
      </p>
    </dialog>
  );
 }
@@ -0,0 +1,263 @@
 import { useEffect, useMemo, useRef, useState } from "react";
 import { triggerBlobDownload } from "@add-ideas/toolbox-helpers";
 import { parseDiagram, renderSvg, type Diagram } from "../core/diagram";
 const EXAMPLES = {
  flowchart: `flowchart LR
 A[Local input] --> B{Valid?}
 B -->|yes| C(Transform)
 B -.->|no| D[Diagnostics]
 C --> E[Export SVG]`,
  sequence: `sequenceDiagram
 participant U as User
 participant B as Browser
 participant F as Local file
 U->>B: Open data
 B-->>F: Read bytes
 F->>B: Local result`,
  class: `classDiagram
 class Document
 Document : +name
 Document : +parse()
 class Package
 Package : +entries
 Document <|-- Package : extends`,
  state: `stateDiagram-v2
 Idle --> Reading : open
 Reading --> Ready : parsed
 Reading -.-> Error : invalid
 Error --> Idle : reset`,
 } as const;
 export function Workbench() {
  const [source, setSource] = useState<string>(EXAMPLES.flowchart),
    [diagram, setDiagram] = useState<Diagram>(() =>
      parseDiagram(EXAMPLES.flowchart),
    ),
    [svg, setSvg] = useState(() => renderSvg(parseDiagram(EXAMPLES.flowchart))),
    [status, setStatus] = useState("Example rendered locally."),
    [zoom, setZoom] = useState(100),
    [outline, setOutline] = useState(true);
  function render() {
    try {
      const next = parseDiagram(source);
      setDiagram(next);
      setSvg(renderSvg(next));
      setStatus(
        `Rendered ${next.nodes.length} nodes and ${next.edges.length} edges; ${next.diagnostics.length} diagnostics.`,
      );
    } catch (e) {
      setStatus(
        `${e instanceof Error ? e.message : String(e)} Last valid diagram remains visible.`,
      );
    }
  }
  async function png() {
    setStatus("Rasterizing PNG locally…");
    try {
      const blob = await svgPng(svg);
      triggerBlobDownload(blob, "diagram.png");
      setStatus("PNG exported locally at 2× canvas scale.");
    } catch (e) {
      setStatus(e instanceof Error ? e.message : String(e));
    }
  }
  return (
    <main className="workbench">
      <section className="hero panel">
        <div>
          <p className="eyebrow">Safe deterministic diagram studio</p>
          <h1>Write structure. See it clearly.</h1>
          <p>
            A useful script-free flowchart, sequence, class and state subset
            with diagnostics, pan/zoom and accessible outline.
          </p>
        </div>
        <div className="examples">
          {(Object.keys(EXAMPLES) as (keyof typeof EXAMPLES)[]).map((key) => (
            <button
              key={key}
              onClick={() => {
                setSource(EXAMPLES[key]);
                setStatus(`${key} example loaded; choose Render.`);
              }}
            >
              {key}
            </button>
          ))}
        </div>
      </section>
      <p role="status">{status}</p>
      <section className="studio">
        <section className="panel editor">
          <label>
            Diagram source
            <textarea
              value={source}
              onChange={(e) => setSource(e.target.value)}
              spellCheck={false}
            />
          </label>
          <div className="actions">
            <button className="primary" onClick={render}>
              Render diagram
            </button>
            <button
              onClick={() =>
                triggerBlobDownload(
                  new Blob([svg], { type: "image/svg+xml" }),
                  "diagram.svg",
                )
              }
            >
              SVG
            </button>
            <button onClick={() => void png()}>PNG 2×</button>
          </div>
          <h2>Syntax diagnostics</h2>
          {diagram.diagnostics.length ? (
            <ul className="diagnostics">
              {diagram.diagnostics.map((d, i) => (
                <li key={i}>
                  <strong>{d.severity}</strong> line {d.line}:{d.column} —{" "}
                  {d.message}
                </li>
              ))}
            </ul>
          ) : (
            <p className="success">No syntax diagnostics.</p>
          )}
          <p className="boundary">
            Caps: 50,000 characters, 2,000 lines, 200 nodes, 500 edges and a
            2,400 px layout edge. Unsupported lines produce diagnostics;
            directives never execute.
          </p>
        </section>
        <section className="panel canvas-panel">
          <div className="toolbar">
            <label>
              Zoom{" "}
              <input
                type="range"
                min="25"
                max="300"
                value={zoom}
                onChange={(e) => setZoom(e.target.valueAsNumber)}
              />
              <output>{zoom}%</output>
            </label>
            <button onClick={() => setZoom(100)}>Reset zoom</button>
            <button onClick={() => setOutline((x) => !x)}>
              {outline ? "Hide" : "Show"} outline
            </button>
          </div>
          <PanCanvas svg={svg} zoom={zoom} />
          {outline && (
            <section className="outline" aria-label="Diagram textual outline">
              <h2>Textual outline</h2>
              <h3>Nodes</h3>
              <ul>
                {diagram.nodes.map((node) => (
                  <li key={node.id}>
                    <strong>{node.label}</strong> <code>{node.id}</code>
                    {node.members.length > 0 && (
                      <ul>
                        {node.members.map((m, i) => (
                          <li key={i}>{m}</li>
                        ))}
                      </ul>
                    )}
                  </li>
                ))}
              </ul>
              <h3>Edges / messages</h3>
              <ol>
                {diagram.edges.map((edge, i) => (
                  <li key={i}>
                    <code>{edge.from}</code> to <code>{edge.to}</code>
                    {edge.label && <> — {edge.label}</>}
                  </li>
                ))}
              </ol>
            </section>
          )}
        </section>
      </section>
    </main>
  );
 }
 function PanCanvas({ svg, zoom }: { svg: string; zoom: number }) {
  const url = useMemo(
      () => URL.createObjectURL(new Blob([svg], { type: "image/svg+xml" })),
      [svg],
    ),
    ref = useRef<HTMLDivElement>(null),
    drag = useRef<
      { x: number; y: number; left: number; top: number } | undefined
    >(undefined);
  useEffect(() => () => URL.revokeObjectURL(url), [url]);
  return (
    <div
      className="canvas"
      ref={ref}
      onPointerDown={(e) => {
        const node = ref.current;
        if (!node) return;
        drag.current = {
          x: e.clientX,
          y: e.clientY,
          left: node.scrollLeft,
          top: node.scrollTop,
        };
        node.setPointerCapture(e.pointerId);
      }}
      onPointerMove={(e) => {
        const node = ref.current,
          start = drag.current;
        if (!node || !start) return;
        node.scrollLeft = start.left - (e.clientX - start.x);
        node.scrollTop = start.top - (e.clientY - start.y);
      }}
      onPointerUp={() => {
        drag.current = undefined;
      }}
    >
      <img
        src={url}
        alt="Rendered diagram; textual outline follows"
        style={{ width: `${zoom}%` }}
        draggable={false}
      />
    </div>
  );
 }
 async function svgPng(svg: string) {
  const match = /viewBox="0 0 ([\d.]+) ([\d.]+)"/u.exec(svg);
  if (!match) throw new Error("Generated SVG has no viewBox.");
  const w = Number(match[1]),
    h = Number(match[2]);
  if (w * h * 4 > 20_000_000)
    throw new Error("PNG exceeds the 20 megapixel export cap.");
  const url = URL.createObjectURL(new Blob([svg], { type: "image/svg+xml" }));
  try {
    const image = await new Promise<HTMLImageElement>((resolve, reject) => {
      const n = new Image();
      n.onload = () => resolve(n);
      n.onerror = () => reject(new Error("SVG rasterization failed."));
      n.src = url;
    });
    const canvas = document.createElement("canvas");
    canvas.width = Math.ceil(w * 2);
    canvas.height = Math.ceil(h * 2);
    const context = canvas.getContext("2d");
    if (!context) throw new Error("Canvas unavailable.");
    context.drawImage(image, 0, 0, canvas.width, canvas.height);
    return await new Promise<Blob>((resolve, reject) =>
      canvas.toBlob(
        (value) =>
          value ? resolve(value) : reject(new Error("PNG encoding failed.")),
        "image/png",
      ),
    );
  } finally {
    URL.revokeObjectURL(url);
  }
 }
@@ -0,0 +1,329 @@
 export type DiagramMode = "flowchart" | "sequence" | "class" | "state";
 export interface Node {
  id: string;
  label: string;
  shape: "rect" | "round" | "diamond" | "actor" | "class" | "state";
  members: string[];
 }
 export interface Edge {
  from: string;
  to: string;
  label: string;
  dashed: boolean;
  arrow: boolean;
 }
 export interface Diagnostic {
  line: number;
  column: number;
  severity: "error" | "warning";
  message: string;
 }
 export interface Diagram {
  mode: DiagramMode;
  direction: "LR" | "TB";
  nodes: Node[];
  edges: Edge[];
  diagnostics: Diagnostic[];
 }
 const MAX_CHARS = 50000,
  MAX_LINES = 2000,
  MAX_NODES = 200,
  MAX_EDGES = 500;
 export function parseDiagram(source: string): Diagram {
  if (source.length > MAX_CHARS)
    throw new Error("Diagram source exceeds 50,000 characters.");
  const lines = source.replaceAll("\r\n", "\n").split("\n");
  if (lines.length > MAX_LINES) throw new Error("Diagram exceeds 2,000 lines.");
  const first = lines.findIndex(
    (line) => line.trim() && !line.trim().startsWith("%%"),
  );
  if (first < 0) throw new Error("Diagram is empty.");
  const header = lines[first]!.trim();
  let mode: DiagramMode,
    direction: "LR" | "TB" = "TB";
  if (/^\s*(?:flowchart|graph)\b/iu.test(header)) {
    mode = "flowchart";
    direction = /\bLR\b/iu.test(header) ? "LR" : "TB";
  } else if (/^sequenceDiagram$/iu.test(header)) mode = "sequence";
  else if (/^classDiagram$/iu.test(header)) mode = "class";
  else if (/^stateDiagram(?:-v2)?$/iu.test(header)) mode = "state";
  else
    throw new Error(
      "First statement must be flowchart/graph, sequenceDiagram, classDiagram or stateDiagram-v2.",
    );
  const nodes = new Map<string, Node>(),
    edges: Edge[] = [],
    diagnostics: Diagnostic[] = [];
  const ensure = (id: string, label = id, shape: Node["shape"] = "rect") => {
    let node = nodes.get(id);
    if (!node) {
      node = { id, label, shape, members: [] };
      nodes.set(id, node);
    } else {
      if (label !== id) node.label = label;
      if (shape !== "rect") node.shape = shape;
    }
    return node;
  };
  for (let index = first + 1; index < lines.length; index++) {
    const raw = lines[index]!,
      line = raw.trim();
    if (!line || (line.startsWith("%%") && !line.startsWith("%%{"))) continue;
    if (/^%%\{|^(?:click|linkStyle|style|classDef|init)\b/iu.test(line)) {
      diagnostics.push(
        diag(
          index + 1,
          1,
          "error",
          "Directives, click handlers and styling commands are not supported.",
        ),
      );
      continue;
    }
    try {
      if (mode === "sequence") parseSequence(line, ensure, edges);
      else if (mode === "class") parseClass(line, ensure, edges);
      else parseGraph(line, ensure, edges, mode);
    } catch (error) {
      diagnostics.push(
        diag(
          index + 1,
          Math.max(1, raw.indexOf(line) + 1),
          "error",
          error instanceof Error ? error.message : String(error),
        ),
      );
    }
    if (nodes.size > MAX_NODES) throw new Error("Diagram exceeds 200 nodes.");
    if (edges.length > MAX_EDGES) throw new Error("Diagram exceeds 500 edges.");
  }
  for (const edge of edges) {
    ensure(
      edge.from,
      edge.from,
      mode === "sequence" ? "actor" : mode === "state" ? "state" : "rect",
    );
    ensure(
      edge.to,
      edge.to,
      mode === "sequence" ? "actor" : mode === "state" ? "state" : "rect",
    );
  }
  if (!nodes.size)
    diagnostics.push(diag(first + 1, 1, "warning", "Diagram has no nodes."));
  return { mode, direction, nodes: [...nodes.values()], edges, diagnostics };
 }
 function parseGraph(
  line: string,
  ensure: (id: string, label?: string, shape?: Node["shape"]) => Node,
  edges: Edge[],
  mode: DiagramMode,
 ) {
  const edge =
    /^(.+?)\s*(-->|---|-.->|==>)\s*(?:\|([^|]{0,200})\|\s*)?(.+)$/u.exec(line);
  if (edge) {
    const left = parseNode(edge[1]!.trim(), mode),
      right = parseNode(edge[4]!.trim(), mode);
    ensure(left.id, left.label, left.shape);
    ensure(right.id, right.label, right.shape);
    edges.push({
      from: left.id,
      to: right.id,
      label: edge[3]?.trim() ?? "",
      dashed: edge[2] === "-.->",
      arrow: edge[2] !== "---",
    });
    return;
  }
  const node = parseNode(line, mode);
  ensure(node.id, node.label, node.shape);
 }
 function parseNode(source: string, mode: DiagramMode) {
  const match =
    /^([A-Za-z_][\w-]*)(?:\[([^\]]{0,500})\]|\(([^)]{0,500})\)|\{([^}]{0,500})\})?$/u.exec(
      source,
    );
  if (!match) throw new Error(`Unsupported node/edge syntax: ${source}`);
  return {
    id: match[1]!,
    label: match[2] ?? match[3] ?? match[4] ?? match[1]!,
    shape: match[4]
      ? ("diamond" as const)
      : match[3]
        ? ("round" as const)
        : mode === "state"
          ? ("state" as const)
          : ("rect" as const),
  };
 }
 function parseSequence(
  line: string,
  ensure: (id: string, label?: string, shape?: Node["shape"]) => Node,
  edges: Edge[],
 ) {
  const participant =
    /^(?:participant|actor)\s+([A-Za-z_][\w-]*)(?:\s+as\s+(.{1,200}))?$/iu.exec(
      line,
    );
  if (participant) {
    ensure(participant[1]!, participant[2]?.trim() ?? participant[1], "actor");
    return;
  }
  const message =
    /^([A-Za-z_][\w-]*?)\s*(-->>|-->|->>|->)\s*([A-Za-z_][\w-]*)\s*:\s*(.{1,500})$/u.exec(
      line,
    );
  if (!message)
    throw new Error("Expected participant A [as Label] or A->>B: message.");
  ensure(message[1]!, message[1], "actor");
  ensure(message[3]!, message[3], "actor");
  edges.push({
    from: message[1]!,
    to: message[3]!,
    label: message[4]!.trim(),
    dashed: message[2]!.startsWith("--"),
    arrow: true,
  });
 }
 function parseClass(
  line: string,
  ensure: (id: string, label?: string, shape?: Node["shape"]) => Node,
  edges: Edge[],
 ) {
  const member = /^([A-Za-z_][\w-]*)\s*:\s*(.{1,300})$/u.exec(line);
  if (member) {
    ensure(member[1]!, member[1], "class").members.push(member[2]!.trim());
    return;
  }
  const declaration = /^class\s+([A-Za-z_][\w-]*)(?:\s*\[([^\]]+)\])?$/iu.exec(
    line,
  );
  if (declaration) {
    ensure(declaration[1]!, declaration[2]?.trim() ?? declaration[1], "class");
    return;
  }
  const relation =
    /^([A-Za-z_][\w-]*)\s*(<\|--|--\||-->|\.\.>|--|\*--|o--)\s*([A-Za-z_][\w-]*)(?:\s*:\s*(.{1,200}))?$/u.exec(
      line,
    );
  if (!relation)
    throw new Error("Expected class A, A : member, or A <|-- B : relation.");
  ensure(relation[1]!, relation[1], "class");
  ensure(relation[3]!, relation[3], "class");
  edges.push({
    from: relation[1]!,
    to: relation[3]!,
    label: relation[4]?.trim() ?? relation[2]!,
    dashed: relation[2]!.includes(".."),
    arrow: relation[2] !== "--",
  });
 }
 function diag(
  line: number,
  column: number,
  severity: Diagnostic["severity"],
  message: string,
 ): Diagnostic {
  return { line, column, severity, message };
 }
 export function renderSvg(diagram: Diagram): string {
  if (diagram.mode === "sequence") return renderSequence(diagram);
  const nodeWidth = 180,
    nodeHeight = diagram.mode === "class" ? 110 : 72,
    gapX = 100,
    gapY = 75,
    columns =
      diagram.direction === "LR"
        ? Math.min(5, Math.max(1, diagram.nodes.length))
        : Math.min(4, Math.max(1, Math.ceil(Math.sqrt(diagram.nodes.length)))),
    positions = new Map<string, { x: number; y: number }>();
  diagram.nodes.forEach((node, index) => {
    const column =
        diagram.direction === "LR" ? index % columns : index % columns,
      row = Math.floor(index / columns);
    positions.set(node.id, {
      x: 50 + column * (nodeWidth + gapX),
      y: 55 + row * (nodeHeight + gapY),
    });
  });
  const rows = Math.max(1, Math.ceil(diagram.nodes.length / columns)),
    width = Math.min(2400, 100 + columns * (nodeWidth + gapX) - gapX),
    height = Math.min(2400, 110 + rows * (nodeHeight + gapY) - gapY);
  const edges = diagram.edges
    .map((edge) => {
      const a = positions.get(edge.from)!,
        b = positions.get(edge.to)!,
        x1 = a.x + nodeWidth / 2,
        y1 = a.y + nodeHeight / 2,
        x2 = b.x + nodeWidth / 2,
        y2 = b.y + nodeHeight / 2,
        mx = (x1 + x2) / 2,
        my = (y1 + y2) / 2;
      return `<g><path d="M ${n(x1)} ${n(y1)} L ${n(x2)} ${n(y2)}" fill="none" stroke="#64748b" stroke-width="2" ${edge.dashed ? 'stroke-dasharray="7 5"' : ""} ${edge.arrow ? 'marker-end="url(#arrow)"' : ""}/>${edge.label ? `<text x="${n(mx)}" y="${n(my - 6)}" text-anchor="middle" font-size="13" fill="#334155"><tspan>${xml(edge.label)}</tspan></text>` : ""}</g>`;
    })
    .join("");
  const nodes = diagram.nodes
    .map((node) =>
      renderNode(node, positions.get(node.id)!, nodeWidth, nodeHeight),
    )
    .join("");
  return svgRoot(width, height, edges + nodes);
 }
 function renderNode(
  node: Node,
  p: { x: number; y: number },
  w: number,
  h: number,
 ) {
  const title = xml(node.label),
    shape =
      node.shape === "diamond"
        ? `<polygon points="${p.x + w / 2},${p.y} ${p.x + w},${p.y + h / 2} ${p.x + w / 2},${p.y + h} ${p.x},${p.y + h / 2}"/>`
        : `<rect x="${p.x}" y="${p.y}" width="${w}" height="${h}" rx="${node.shape === "round" || node.shape === "state" ? 18 : 7}"/>`;
  const members = node.members
    .slice(0, 8)
    .map(
      (member, index) =>
        `<text x="${p.x + 10}" y="${p.y + 48 + index * 13}" font-size="11" fill="#334155">${xml(member)}</text>`,
    )
    .join("");
  return `<g fill="#f8fafc" stroke="#7e22ce" stroke-width="2">${shape}</g><text x="${p.x + w / 2}" y="${p.y + 28}" text-anchor="middle" font-size="15" font-weight="700" fill="#1e293b">${title}</text>${members}`;
 }
 function renderSequence(d: Diagram) {
  const gap = 190,
    width = Math.min(2400, 100 + Math.max(1, d.nodes.length) * gap),
    height = Math.min(2400, 140 + Math.max(1, d.edges.length) * 65),
    positions = new Map(
      d.nodes.map((node, index) => [node.id, 70 + index * gap]),
    );
  const actors = d.nodes
    .map((node) => {
      const x = positions.get(node.id)!;
      return `<g><rect x="${x - 65}" y="28" width="130" height="42" rx="6" fill="#f8fafc" stroke="#7e22ce" stroke-width="2"/><text x="${x}" y="54" text-anchor="middle" font-size="14" font-weight="700" fill="#1e293b">${xml(node.label)}</text><path d="M${x} 70V${height - 30}" stroke="#94a3b8" stroke-dasharray="6 5"/></g>`;
    })
    .join("");
  const messages = d.edges
    .map((edge, index) => {
      const x1 = positions.get(edge.from)!,
        x2 = positions.get(edge.to)!,
        y = 105 + index * 65;
      return `<g><path d="M${x1} ${y}H${x2}" stroke="#475569" stroke-width="2" ${edge.dashed ? 'stroke-dasharray="7 5"' : ""} marker-end="url(#arrow)"/><text x="${(x1 + x2) / 2}" y="${y - 8}" text-anchor="middle" font-size="13" fill="#334155">${xml(edge.label)}</text></g>`;
    })
    .join("");
  return svgRoot(width, height, actors + messages);
 }
 function svgRoot(width: number, height: number, body: string) {
  return `<svg xmlns="http://www.w3.org/2000/svg" width="${width}" height="${height}" viewBox="0 0 ${width} ${height}" role="img" aria-label="Generated diagram"><defs><marker id="arrow" viewBox="0 0 10 10" refX="9" refY="5" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0 0L10 5L0 10Z" fill="#475569"/></marker></defs><rect width="100%" height="100%" fill="#fff"/>${body}</svg>`;
 }
 function xml(v: string) {
  return v
    .replaceAll("&", "&amp;")
    .replaceAll("<", "&lt;")
    .replaceAll(">", "&gt;")
    .replaceAll('"', "&quot;")
    .replaceAll("'", "&apos;");
 }
 function n(v: number) {
  return Number(v.toFixed(2));
 }
@@ -0,0 +1,18 @@
 import { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
 import { App } from "./App";
 createRoot(document.getElementById("root")!).render(
  <StrictMode>
    <App />
  </StrictMode>,
 );
 if ("serviceWorker" in navigator && import.meta.env.PROD) {
  window.addEventListener("load", () => {
    const url = new URL("./sw.js", document.baseURI);
    void navigator.serviceWorker
      .register(url, { scope: new URL("./", document.baseURI).pathname })
      .catch(() => undefined);
  });
 }
@@ -0,0 +1,170 @@
 :root {
  color-scheme: light dark;
  font-family: Inter, system-ui, sans-serif;
  --surface: color-mix(in srgb, Canvas 94%, #d8b4fe 6%);
  --line: color-mix(in srgb, CanvasText 18%, transparent);
  --muted: color-mix(in srgb, CanvasText 65%, transparent);
  --accent: #7e22ce;
  --soft: color-mix(in srgb, Canvas 82%, #c084fc 18%);
 }
 * {
  box-sizing: border-box;
 }
 body {
  margin: 0;
 }
 .toolbox-shell__main {
  width: min(100%, 90rem);
 }
 button,
 input,
 textarea {
  font: inherit;
 }
 .workbench {
  padding: clamp(0.75rem, 2vw, 1.5rem);
  display: grid;
  gap: 1rem;
 }
 .panel {
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  padding: 1rem;
  min-width: 0;
 }
 .hero,
 .toolbar,
 .actions,
 .examples {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
 }
 .hero {
  background: linear-gradient(135deg, var(--surface), var(--soft));
 }
 .hero h1 {
  margin: 0.2rem 0;
  font-size: clamp(1.6rem, 4vw, 2.6rem);
 }
 .hero p {
  max-width: 65ch;
  color: var(--muted);
 }
 .eyebrow {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--accent);
 }
 button,
 textarea,
 input {
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  background: Canvas;
  color: CanvasText;
  padding: 0.55rem 0.7rem;
 }
 button {
  cursor: pointer;
 }
 .primary {
  background: var(--accent);
  color: white;
 }
 label {
  display: grid;
  gap: 0.3rem;
  color: var(--muted);
 }
 textarea {
  width: 100%;
  min-height: 28rem;
  font:
    0.82rem/1.5 ui-monospace,
    monospace;
  resize: vertical;
 }
 .studio {
  display: grid;
  grid-template-columns: minmax(18rem, 28rem) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
 }
 .editor {
  display: grid;
  gap: 0.7rem;
 }
 .canvas-panel {
  display: grid;
  gap: 1rem;
 }
 .toolbar label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
 }
 .canvas {
  height: min(62vh, 50rem);
  overflow: auto;
  background: #d8dee8;
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  cursor: grab;
  touch-action: none;
 }
 .canvas:active {
  cursor: grabbing;
 }
 .canvas img {
  display: block;
  max-width: none;
  height: auto;
  user-select: none;
 }
 .outline {
  max-height: 24rem;
  overflow: auto;
  border-top: 1px solid var(--line);
 }
 .outline code {
  color: var(--accent);
 }
 .diagnostics {
  padding-left: 1.2rem;
 }
 .success {
  color: #187b43;
 }
 .boundary {
  border-left: 3px solid #a85a00;
  background: color-mix(in srgb, #f59e0b 10%, Canvas);
  padding: 0.7rem;
  color: var(--muted);
 }
 dialog {
  width: min(40rem, calc(100% - 2rem));
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: Canvas;
  color: CanvasText;
  padding: 1.2rem;
 }
 dialog button {
  float: right;
 }
@media (max-width: 850px) {
  .studio {
    grid-template-columns: 1fr;
  }
  .hero {
    align-items: stretch;
    flex-direction: column;
  }
 }
@@ -0,0 +1,8 @@
 import "@testing-library/jest-dom/vitest";
 import { afterEach } from "vitest";
 import { cleanup } from "@testing-library/react";
 afterEach(() => {
  cleanup();
  localStorage.clear();
 });
@@ -0,0 +1,41 @@
 {
  "$schema": "https://git.add-ideas.de/lotobo/toolbox-sdk/raw/branch/main/schemas/toolbox-app.v1.schema.json",
  "schemaVersion": 1,
  "id": "de.add-ideas.diagram-tools",
  "name": "Diagram Tools",
  "version": "0.1.0",
  "description": "Create safe diagrams locally.",
  "entry": "./",
  "icon": "./favicon.svg",
  "categories": ["graphics", "developer", "productivity"],
  "tags": ["diagram", "flowchart", "sequence", "class", "state", "svg"],
  "integration": {
    "contextVersion": 1,
    "launchModes": ["navigate", "new-tab"],
    "embedding": "unsupported"
  },
  "requirements": {
    "secureContext": false,
    "workers": false,
    "indexedDb": false,
    "crossOriginIsolated": false,
    "topLevelContext": false
  },
  "privacy": {
    "processing": "local",
    "fileUploads": false,
    "telemetry": false,
    "label": "Diagram source and exports remain local."
  },
  "source": {
    "repository": "https://git.add-ideas.de/lotobo/diagram-tools",
    "license": "GPL-3.0-or-later"
  },
  "actions": [
    {
      "id": "source",
      "label": "Source",
      "url": "https://git.add-ideas.de/lotobo/diagram-tools"
    }
  ]
 }
@@ -0,0 +1,4 @@
 import { defineToolboxApp, parseToolboxApp } from "@add-ideas/toolbox-contract";
 import source from "./manifest.source.json";
 export const manifest = defineToolboxApp(parseToolboxApp(source));
@@ -0,0 +1 @@
 export const APP_VERSION = "0.1.0";
@@ -0,0 +1 @@
 /// <reference types="vite/client" />
@@ -0,0 +1,79 @@
 import { expect, test } from "@playwright/test";
 import { readFile } from "node:fs/promises";
 const ORIGIN = "http://127.0.0.1:4222";
 test("renders nested, local, accessible diagram", async ({ page }) => {
  const external: string[] = [];
  await page.route("**/*", async (r) => {
    if (new URL(r.request().url()).origin !== ORIGIN) {
      external.push(r.request().url());
      await r.abort();
    } else await r.continue();
  });
  await page.setViewportSize({ width: 1800, height: 900 });
  await page.goto("/deep/nested/diagram/");
  await expect(
    page.getByRole("heading", { name: "Diagram Tools" }),
  ).toBeVisible();
  await expect(
    page.getByRole("region", { name: "Diagram textual outline" }),
  ).toContainText("Local input");
  await page
    .getByLabel("Diagram source")
    .fill("sequenceDiagram\nparticipant A as Ada\nA->>B: hello");
  await page.getByRole("button", { name: "Render diagram" }).click();
  await expect(page.locator('p[role="status"]')).toContainText(
    "2 nodes and 1 edges",
  );
  expect(external).toEqual([]);
  expect(
    await page
      .locator(".toolbox-shell__main")
      .evaluate((n) => getComputedStyle(n).width),
  ).toBe("1440px");
 });
 test("exports safe SVG and retains last diagram", async ({ page }) => {
  await page.goto("/deep/nested/diagram/");
  await page.getByLabel("Diagram source").fill("not a diagram");
  await page.getByRole("button", { name: "Render diagram" }).click();
  await expect(page.locator('p[role="status"]')).toContainText(
    "Last valid diagram",
  );
  const pending = page.waitForEvent("download");
  await page.getByRole("button", { name: "SVG", exact: true }).click();
  const data = await readFile((await (await pending).path())!, "utf8");
  expect(data).toContain("<svg");
  expect(data).not.toContain("<script>");
 });
 test("PWA theme, offline reload, and headers", async ({
  page,
  context,
  request,
 }) => {
  await page.goto("/deep/nested/diagram/");
  await page.getByRole("button", { name: "Personalize" }).click();
  await page.getByRole("button", { name: "Dark" }).click();
  await expect(page.locator(".toolbox-shell").first()).toHaveAttribute(
    "data-toolbox-theme",
    "dark",
  );
  expect(
    await page.evaluate(async () =>
      Boolean(await navigator.serviceWorker.ready),
    ),
  ).toBe(true);
  await context.setOffline(true);
  await page.reload();
  await expect(
    page.getByRole("heading", { name: "Diagram Tools" }),
  ).toBeVisible();
  await context.setOffline(false);
  const response = await request.get("/deep/nested/diagram/");
  expect(response.headers()["content-security-policy"]).toContain(
    "connect-src 'self'",
  );
  const manifest = await request.get("/deep/nested/diagram/toolbox-app.json");
  await expect(manifest.json()).resolves.toMatchObject({
    id: "de.add-ideas.diagram-tools",
    version: "0.1.0",
  });
 });
@@ -0,0 +1,19 @@
 import { render, screen } from "@testing-library/react";
 import userEvent from "@testing-library/user-event";
 import { describe, expect, it } from "vitest";
 import { Workbench } from "../../src/components/Workbench";
 describe("Diagram Workbench", () => {
  it("loads and renders a sequence example with an accessible outline", async () => {
    const user = userEvent.setup();
    render(<Workbench />);
    await user.click(screen.getByRole("button", { name: "sequence" }));
    await user.click(screen.getByRole("button", { name: "Render diagram" }));
    expect(screen.getByText(/Rendered 3 nodes and 3 edges/)).toBeVisible();
    expect(
      screen.getByRole("region", { name: "Diagram textual outline" }),
    ).toHaveTextContent("Browser");
  });
 });
@@ -0,0 +1,37 @@
 import { describe, expect, it } from "vitest";
 import { parseDiagram, renderSvg } from "../../src/core/diagram";
 describe("diagram grammar", () => {
  it("parses and escapes flowcharts", () => {
    const d = parseDiagram("flowchart LR\nA[<script>] -->|safe| B{Choice}");
    expect(d.nodes).toHaveLength(2);
    const svg = renderSvg(d);
    expect(svg).toContain("&lt;script&gt;");
    expect(svg).not.toContain("<script>");
  });
  it("supports sequence, class and state", () => {
    const sequence = parseDiagram(
      "sequenceDiagram\nparticipant A as Ada\nparticipant B\nA-->>B: hello",
    );
    expect(sequence.mode).toBe("sequence");
    expect(sequence.nodes.map((node) => node.id)).toEqual(["A", "B"]);
    expect(sequence.edges[0]).toMatchObject({
      from: "A",
      to: "B",
      dashed: true,
    });
    expect(
      parseDiagram("classDiagram\nclass A\nA : +field\nA <|-- B").nodes[0]
        ?.members,
    ).toEqual(["+field"]);
    expect(parseDiagram("stateDiagram-v2\nIdle --> Ready : go").mode).toBe(
      "state",
    );
  });
  it("diagnoses directives without executing", () => {
    const d = parseDiagram(
      "flowchart LR\n%%{init: {}}%%\nclick A https://bad.test\nA-->B",
    );
    expect(d.diagnostics).toHaveLength(2);
    expect(renderSvg(d)).not.toContain("bad.test");
  });
 });
@@ -0,0 +1,27 @@
 {
  "compilerOptions": {
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
    "target": "ES2023",
    "lib": ["ES2023", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "types": ["vite/client", "node"],
    "allowArbitraryExtensions": true,
    "skipLibCheck": true,
    "moduleResolution": "Bundler",
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true,
    "moduleDetection": "force",
    "noEmit": true,
    "jsx": "react-jsx",
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "erasableSyntaxOnly": true,
    "noFallthroughCasesInSwitch": true,
    "strict": true,
    "noUncheckedIndexedAccess": true,
    "useDefineForClassFields": true,
    "resolveJsonModule": true,
    "isolatedModules": true
  },
  "include": ["src", "tests"]
 }
@@ -0,0 +1,11 @@
 {
  "files": [],
  "references": [
    {
      "path": "./tsconfig.app.json"
    },
    {
      "path": "./tsconfig.node.json"
    }
  ]
 }
@@ -0,0 +1,24 @@
 {
  "compilerOptions": {
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
    "target": "ES2023",
    "lib": ["ES2023"],
    "module": "ESNext",
    "types": ["node"],
    "skipLibCheck": true,
    "moduleResolution": "Bundler",
    "allowImportingTsExtensions": true,
    "verbatimModuleSyntax": true,
    "moduleDetection": "force",
    "noEmit": true,
    "strict": true,
    "noUnusedLocals": true,
    "noUnusedParameters": true
  },
  "include": [
    "vite.config.ts",
    "playwright.config.ts",
    "eslint.config.mjs",
    "scripts/**/*.mjs"
  ]
 }
@@ -0,0 +1,16 @@
 /// <reference types="vitest/config" />
 import { defineConfig } from "vite";
 import react from "@vitejs/plugin-react";
 export default defineConfig({
  base: "./",
  plugins: [react()],
  test: {
    environment: "jsdom",
    setupFiles: "./src/test/setup.ts",
    css: true,
    maxWorkers: 2,
    restoreMocks: true,
    exclude: ["tests/browser/**", "node_modules/**", "dist/**"],
  },
 });
		`@@ -0,0 +1 @@`
							`@add-ideas:registry=https://git.add-ideas.de/api/packages/lotobo/npm/`
		`@@ -0,0 +1,3 @@`
							`# Contributing`

							`Keep grammar explicit, bounded and script-free. New syntax needs parser, escaping, layout and browser tests. Contributions are GPL-3.0-or-later.`
		`@@ -0,0 +1,3 @@`
							`# Runtime licences`

							`Generated runtime licence texts accompany releases.`
		`@@ -0,0 +1,3 @@`
							`# Security`

							`Report privately through Gitea. Source is untrusted and never interpreted as HTML/code. Active directives and remote assets are unsupported; generated SVG contains escaped text and fixed elements only.`
		`@@ -0,0 +1,3 @@`
							`# Source identity`

							Diagram Tools 0.1.0 · `de.add-ideas.diagram-tools` · https://git.add-ideas.de/lotobo/diagram-tools · GPL-3.0-or-later. Deterministic releases normalize file order, time and permissions and add SHA-256.
		`@@ -0,0 +1,3 @@`
							`# Third-party notices`

							`Bundled runtime: React/React DOM (MIT) and add·ideas Toolbox Contract/Shell/Helpers (GPL-3.0-or-later). Exact runtime texts are generated into releases.`
		`@@ -0,0 +1,3 @@`
							`# Accessibility`

							`The editor, buttons, zoom and diagnostics use native controls with visible focus. Every visual diagram has a textual node/member/edge outline. The studio reflows on small screens and follows shell themes.`
		`@@ -0,0 +1,3 @@`
							`# Architecture`

							`core/diagram.ts` parses one fixed grammar into nodes, edges and line diagnostics, then lays it out deterministically as escaped SVG. Sequence diagrams use lifelines; other modes use a bounded grid. React shows the last successful SVG after errors and delegates PNG rasterization to a local canvas.
		`@@ -0,0 +1,3 @@`
							`# Privacy and security`

							`Source remains in memory; explicit SVG/PNG downloads are the only output. There is no telemetry, remote asset resolution, HTML injection, eval, directive execution or URL fetch. Complexity and raster output are capped.`
		`@@ -0,0 +1 @@`
							`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64"><rect width="64" height="64" rx="14" fill="#24172c"/><rect x="9" y="12" width="17" height="14" rx="3" fill="#e9d5ff"/><rect x="38" y="38" width="17" height="14" rx="3" fill="#e9d5ff"/><circle cx="47" cy="18" r="8" fill="#c084fc"/><path d="M26 19h13M47 26v12M21 26l20 13" stroke="#fff" stroke-width="3" fill="none"/></svg>`