Release Format Lab 0.1.0

2026-09-01 13:39:38 +02:00
commit cfc525a88e
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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 property-aware conversion graphs for data, image, audio/video, and
  subtitle formats
 - Add deterministic route enumeration and conservative preservation scoring
 - Add bounded JSON, NDJSON, CSV, and typed XML conversion/round-trip execution
 - Add property signatures, expectation-versus-measurement evidence, notices,
  target export, and deterministic report export
 - Add Toolbox shell integration, offline PWA support, documentation, and
  Chromium/Firefox coverage
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 # Contributing
 Run `npm ci`, `npm run check`, and `npm run test:browser` before proposing a change. Keep processing local, preserve explicit limits, and include fixtures for every parser boundary.
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    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 @@
 # Licences
 The application is GPL-3.0-or-later. Generated release artifacts include an exact runtime dependency licence inventory in `npm-runtime-licenses.txt`.
@@ -0,0 +1,50 @@
 # Format Lab
 Explore conversion paths, state the expected preservation boundary, and measure
 what a representative round trip actually changes. Format Lab is a local-first
 module in the add·ideas Toolbox.
 ## v0.1.0 capabilities
 - Browse directed format graphs for structured data, images, audio/video, and
  subtitles
 - Choose the properties that matter and rank bounded paths by expected loss,
  conditional behaviour, unknowns, and conversion count
 - Inspect every edge's availability and explicit caveat; routes are never called
  lossless merely because no catalog loss is known
 - Execute JSON, NDJSON, CSV, and a typed XML record-dialect conversion path over
  a bounded canonical dataset
 - Convert back to the source format and measure record/field order, names, scalar
  types, nulls, nested values, numbers, and Unicode text
 - Display catalog expectations beside measured evidence and mark metadata as
  untested when it is outside the canonical model
 - Export the target data and a deterministic evidence report containing the
  catalog version, exact path, expectations, measurements, and notices
 ## Honest scope
 The image, audio/video, and subtitle graphs are planning contracts linked to the
 specialized Toolbox apps; v0.1.0 does not duplicate their codec or renderer
 engines. Catalog statuses are conservative expectations, not measurements of a
 particular file or encoder. The executable data lab supports records only—not
 arbitrary JSON documents, XML mixed content/namespaces, or an external CSV type
 schema. Its typed XML output is a documented lab interchange dialect.
 Inputs are capped at 2 MiB, 10,000 records, 200 fields per record, 500,000
 top-level values, and 8 MiB output. CSV cells are strings and spreadsheet-formula
 prefixes are neutralized; the resulting semantic change is visible in the
 round-trip measurement.
 ## Development
 ```sh
 npm ci
 npm run check
 npm run test:browser
 ```
 `npm run release:artifact` produces a deterministic ZIP and SHA-256 sidecar.
 ## License
 GPL-3.0-or-later. See [LICENSE](LICENSE).
@@ -0,0 +1,3 @@
 # Security
 Please report vulnerabilities privately to the repository owner. Do not attach sensitive source files to public issues. Imported inputs are untrusted; parsers must remain bounded and must not execute active content or fetch external resources.
@@ -0,0 +1,7 @@
 # Corresponding source
 The corresponding source for Format Lab 0.1.0 is available at:
 https://git.add-ideas.de/lotobo/format-lab/src/tag/v0.1.0
 Build with Node.js 22, npm 11, `npm ci`, and `npm run release:artifact`.
@@ -0,0 +1,13 @@
 # Third-party notices
 Format Lab 0.1.0 directly depends on these runtime packages:
 | Package                          | Pinned version | Declared licence |
 | -------------------------------- | -------------: | ---------------- |
 | `@add-ideas/toolbox-contract`    |          0.2.3 | Apache-2.0       |
 | `@add-ideas/toolbox-helpers`     |          0.1.0 | GPL-3.0-or-later |
 | `@add-ideas/toolbox-shell-react` |          0.2.3 | Apache-2.0       |
 | `react`                          |         19.2.8 | MIT              |
 | `react-dom`                      |         19.2.8 | MIT              |
 This table covers direct production dependencies, not transitive packages or development tooling. During a release build, the exact non-development dependency tree and discovered licence texts are generated from the lockfile into `LICENSES/npm-runtime-licenses.txt` and included in the release ZIP. Copyright and licence terms remain with their respective authors.
@@ -0,0 +1,11 @@
 # Accessibility
 The visual format graph has a descriptive accessible name and is followed by a
 complete keyboard-scrollable edge table, so it is never the sole source of
 information. Native labelled selects, checkboxes, buttons, text areas, and
 tables expose every path and measurement without pointer input.
 Expected loss, measured change, conditional status, and unknown state use text
 labels in addition to colour. Layouts collapse into document order on smaller
 screens. Light, dark, and system themes inherit the shared Toolbox shell, with
 visible focus and reduced-motion support.
@@ -0,0 +1,18 @@
 # Architecture
 The immutable catalog defines formats, domain properties, directed conversion
 edges, availability, and a per-property status. A bounded depth-first search
 enumerates acyclic paths of at most four conversions. Routes are sorted by the
 worst status for the user-selected properties and then by conversion count;
 catalog results remain explicitly expected rather than measured.
 The executable data lab parses JSON, NDJSON, CSV, and a typed XML record dialect
 into a bounded canonical list of records. Every selected edge serializes and
 re-parses the canonical data, so losses accumulate along the actual path. The
 target is then serialized back to the source format. Stable property signatures
 compare record/field order, names, types, nulls, nesting, numeric values, and
 Unicode text. Metadata remains not-tested because the canonical model does not
 pretend to represent arbitrary wrappers, comments, namespaces, or schemas.
 Limits are 2 MiB input, 10,000 records, 200 fields per record, 500,000 top-level
 values, JSON depth 64, 200,000 JSON nodes, and 8 MiB output.
@@ -0,0 +1,17 @@
 # Privacy and security
 Selected files, converted data, and evidence reports remain in browser memory.
 There is no upload, telemetry, analytics, remote reference resolution, account,
 external font, or codec service. Production policy restricts connections to the
 same origin and browser tests reject unexpected requests.
 JSON uses bounded parsing and rejects prototype-sensitive field names. XML
 DOCTYPE declarations are disabled, values are rendered as text, and generated
 XML escapes names and content. CSV parsing is bounded; exports prefix cells that
 could be interpreted as spreadsheet formulas. All outputs are explicit
 user-triggered downloads.
 A matching round-trip signature is evidence only for the bounded canonical
 properties and supplied sample. It is not proof of standard conformance,
 metadata preservation, codec quality, accessibility, or losslessness for other
 files, implementations, settings, or future tool versions.
@@ -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 +1,19 @@
 <!doctype html>
 <html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta
      name="description"
      content="Explore conversion paths and measure format round-trip losses locally."
    />
    <link rel="icon" type="image/svg+xml" href="./favicon.svg" />
    <link rel="manifest" href="./manifest.webmanifest" />
    <meta name="theme-color" content="#29255f" />
    <title>Format Lab</title>
  </head>
  <body>
    <div id="root"></div>
    <script type="module" src="./src/main.tsx"></script>
  </body>
 </html>
@@ -0,0 +1,71 @@
 {
  "name": "format-lab",
  "version": "0.1.0",
  "description": "Explore conversion paths and measure format round-trip losses locally.",
  "license": "GPL-3.0-or-later",
  "author": "Albrecht Degering",
  "repository": {
    "type": "git",
    "url": "git+https://git.add-ideas.de/lotobo/format-lab.git"
  },
  "homepage": "https://git.add-ideas.de/lotobo/format-lab",
  "bugs": {
    "url": "https://git.add-ideas.de/lotobo/format-lab/issues"
  },
  "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",
    "preview": "vite preview",
    "typecheck": "tsc -b --pretty false",
    "lint": "eslint . --max-warnings=0",
    "format": "prettier --write .",
    "format:check": "prettier --check .",
    "test": "vitest run",
    "test:watch": "vitest",
    "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 +1,21 @@
 import { defineConfig, devices } from "@playwright/test";
 export default defineConfig({
  testDir: "./tests/browser",
  fullyParallel: false,
  workers: 1,
  timeout: 120_000,
  expect: { timeout: 10_000 },
  reporter: [["list"]],
  use: { baseURL: "http://127.0.0.1:4201", trace: "retain-on-failure" },
  webServer: {
    command: "npm run build && node scripts/serve-test.mjs",
    url: "http://127.0.0.1:4201",
    reuseExistingServer: !process.env.CI,
    timeout: 180_000,
  },
  projects: [
    { name: "chromium", use: { ...devices["Desktop Chrome"] } },
    { name: "firefox", use: { ...devices["Desktop Firefox"] } },
  ],
 });
@@ -0,0 +1,12 @@
 # Changelog
 ## 0.1.0 - 2026-09-01
 - Add property-aware conversion graphs for data, image, audio/video, and
  subtitle formats
 - Add deterministic route enumeration and conservative preservation scoring
 - Add bounded JSON, NDJSON, CSV, and typed XML conversion/round-trip execution
 - Add property signatures, expectation-versus-measurement evidence, notices,
  target export, and deterministic report export
 - Add Toolbox shell integration, offline PWA support, documentation, and
  Chromium/Firefox coverage
@@ -0,0 +1,3 @@
 # Contributing
 Run `npm ci`, `npm run check`, and `npm run test:browser` before proposing a change. Keep processing local, preserve explicit limits, and include fixtures for every parser boundary.
@@ -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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  Corresponding Source conveyed, and Installation Information provided,
 in accord with this section must be in a format that is publicly
 documented (and with an implementation available to the public in
 source code form), and must require no special password or key for
 unpacking, reading or copying.
  7. Additional Terms.
  "Additional permissions" are terms that supplement the terms of this
 License by making exceptions from one or more of its conditions.
 Additional permissions that are applicable to the entire Program shall
 be treated as though they were included in this License, to the extent
 that they are valid under applicable law.  If additional permissions
 apply only to part of the Program, that part may be used separately
 under those permissions, but the entire Program remains governed by
 this License without regard to the additional permissions.
  When you convey a copy of a covered work, you may at your option
 remove any additional permissions from that copy, or from any part of
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 removal in certain cases when you modify the work.)  You may place
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  Notwithstanding any other provision of this License, for material you
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  All other non-permissive additional terms are considered "further
 restrictions" within the meaning of section 10.  If the Program as you
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 License, you may add to a covered work material governed by the terms
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 not survive such relicensing or conveying.
  If you add terms to a covered work in accord with this section, you
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  Additional terms, permissive or non-permissive, may be stated in the
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 the above requirements apply either way.
  8. Termination.
  You may not propagate or modify a covered work except as expressly
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  However, if you cease all violation of this License, then your
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 provisionally, unless and until the copyright holder explicitly and
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 holder fails to notify you of the violation by some reasonable means
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  Moreover, your license from a particular copyright holder is
 reinstated permanently if the copyright holder notifies you of the
 violation by some reasonable means, this is the first time you have
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 copyright holder, and you cure the violation prior to 30 days after
 your receipt of the notice.
  Termination of your rights under this section does not terminate the
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 this License.  If your rights have been terminated and not permanently
 reinstated, you do not qualify to receive new licenses for the same
 material under section 10.
  9. Acceptance Not Required for Having Copies.
  You are not required to accept this License in order to receive or
 run a copy of the Program.  Ancillary propagation of a covered work
 occurring solely as a consequence of using peer-to-peer transmission
 to receive a copy likewise does not require acceptance.  However,
 nothing other than this License grants you permission to propagate or
 modify any covered work.  These actions infringe copyright if you do
 not accept this License.  Therefore, by modifying or propagating a
 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
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 for enforcing compliance by third parties with this License.
  An "entity transaction" is a transaction transferring control of an
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 Corresponding Source of the work from the predecessor in interest, if
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  You may not impose any further restrictions on the exercise of the
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 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
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 but do not include claims that would be infringed only as a
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  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
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  In the following three paragraphs, a "patent license" is any express
 agreement or commitment, however denominated, not to enforce a patent
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 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
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 in the business of distributing software, under which you make payment
 to the third party based on the extent of your activity of conveying
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 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
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 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
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 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 @@
 # Licences
 The application is GPL-3.0-or-later. Generated release artifacts include an exact runtime dependency licence inventory in `npm-runtime-licenses.txt`.
@@ -0,0 +1,50 @@
 # Format Lab
 Explore conversion paths, state the expected preservation boundary, and measure
 what a representative round trip actually changes. Format Lab is a local-first
 module in the add·ideas Toolbox.
 ## v0.1.0 capabilities
 - Browse directed format graphs for structured data, images, audio/video, and
  subtitles
 - Choose the properties that matter and rank bounded paths by expected loss,
  conditional behaviour, unknowns, and conversion count
 - Inspect every edge's availability and explicit caveat; routes are never called
  lossless merely because no catalog loss is known
 - Execute JSON, NDJSON, CSV, and a typed XML record-dialect conversion path over
  a bounded canonical dataset
 - Convert back to the source format and measure record/field order, names, scalar
  types, nulls, nested values, numbers, and Unicode text
 - Display catalog expectations beside measured evidence and mark metadata as
  untested when it is outside the canonical model
 - Export the target data and a deterministic evidence report containing the
  catalog version, exact path, expectations, measurements, and notices
 ## Honest scope
 The image, audio/video, and subtitle graphs are planning contracts linked to the
 specialized Toolbox apps; v0.1.0 does not duplicate their codec or renderer
 engines. Catalog statuses are conservative expectations, not measurements of a
 particular file or encoder. The executable data lab supports records only—not
 arbitrary JSON documents, XML mixed content/namespaces, or an external CSV type
 schema. Its typed XML output is a documented lab interchange dialect.
 Inputs are capped at 2 MiB, 10,000 records, 200 fields per record, 500,000
 top-level values, and 8 MiB output. CSV cells are strings and spreadsheet-formula
 prefixes are neutralized; the resulting semantic change is visible in the
 round-trip measurement.
 ## Development
 ```sh
 npm ci
 npm run check
 npm run test:browser
 ```
 `npm run release:artifact` produces a deterministic ZIP and SHA-256 sidecar.
 ## License
 GPL-3.0-or-later. See [LICENSE](LICENSE).
@@ -0,0 +1,3 @@
 # Security
 Please report vulnerabilities privately to the repository owner. Do not attach sensitive source files to public issues. Imported inputs are untrusted; parsers must remain bounded and must not execute active content or fetch external resources.
@@ -0,0 +1,7 @@
 # Corresponding source
 The corresponding source for Format Lab 0.1.0 is available at:
 https://git.add-ideas.de/lotobo/format-lab/src/tag/v0.1.0
 Build with Node.js 22, npm 11, `npm ci`, and `npm run release:artifact`.
@@ -0,0 +1,13 @@
 # Third-party notices
 Format Lab 0.1.0 directly depends on these runtime packages:
 | Package                          | Pinned version | Declared licence |
 | -------------------------------- | -------------: | ---------------- |
 | `@add-ideas/toolbox-contract`    |          0.2.3 | Apache-2.0       |
 | `@add-ideas/toolbox-helpers`     |          0.1.0 | GPL-3.0-or-later |
 | `@add-ideas/toolbox-shell-react` |          0.2.3 | Apache-2.0       |
 | `react`                          |         19.2.8 | MIT              |
 | `react-dom`                      |         19.2.8 | MIT              |
 This table covers direct production dependencies, not transitive packages or development tooling. During a release build, the exact non-development dependency tree and discovered licence texts are generated from the lockfile into `LICENSES/npm-runtime-licenses.txt` and included in the release ZIP. Copyright and licence terms remain with their respective authors.
@@ -0,0 +1,11 @@
 # Accessibility
 The visual format graph has a descriptive accessible name and is followed by a
 complete keyboard-scrollable edge table, so it is never the sole source of
 information. Native labelled selects, checkboxes, buttons, text areas, and
 tables expose every path and measurement without pointer input.
 Expected loss, measured change, conditional status, and unknown state use text
 labels in addition to colour. Layouts collapse into document order on smaller
 screens. Light, dark, and system themes inherit the shared Toolbox shell, with
 visible focus and reduced-motion support.
@@ -0,0 +1,18 @@
 # Architecture
 The immutable catalog defines formats, domain properties, directed conversion
 edges, availability, and a per-property status. A bounded depth-first search
 enumerates acyclic paths of at most four conversions. Routes are sorted by the
 worst status for the user-selected properties and then by conversion count;
 catalog results remain explicitly expected rather than measured.
 The executable data lab parses JSON, NDJSON, CSV, and a typed XML record dialect
 into a bounded canonical list of records. Every selected edge serializes and
 re-parses the canonical data, so losses accumulate along the actual path. The
 target is then serialized back to the source format. Stable property signatures
 compare record/field order, names, types, nulls, nesting, numeric values, and
 Unicode text. Metadata remains not-tested because the canonical model does not
 pretend to represent arbitrary wrappers, comments, namespaces, or schemas.
 Limits are 2 MiB input, 10,000 records, 200 fields per record, 500,000 top-level
 values, JSON depth 64, 200,000 JSON nodes, and 8 MiB output.
@@ -0,0 +1,17 @@
 # Privacy and security
 Selected files, converted data, and evidence reports remain in browser memory.
 There is no upload, telemetry, analytics, remote reference resolution, account,
 external font, or codec service. Production policy restricts connections to the
 same origin and browser tests reject unexpected requests.
 JSON uses bounded parsing and rejects prototype-sensitive field names. XML
 DOCTYPE declarations are disabled, values are rendered as text, and generated
 XML escapes names and content. CSV parsing is bounded; exports prefix cells that
 could be interpreted as spreadsheet formulas. All outputs are explicit
 user-triggered downloads.
 A matching round-trip signature is evidence only for the bounded canonical
 properties and supplied sample. It is not proof of standard conformance,
 metadata preservation, codec quality, accessibility, or losslessness for other
 files, implementations, settings, or future tool versions.
@@ -0,0 +1 @@
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="Format Lab"><path fill="#5b4ec4" d="M11 4h30l12 12v44H11z"/><path fill="#fff" opacity=".28" d="M41 4v14h12"/><circle cx="21" cy="31" r="5" fill="#fff"/><circle cx="42" cy="27" r="5" fill="#fff"/><circle cx="37" cy="46" r="5" fill="#fff"/><path d="M25 30l12-2m3 4l-2 9m-5 2l-9-8" fill="none" stroke="#fff" stroke-width="4"/></svg>
@@ -0,0 +1,18 @@
 {
  "name": "Format Lab",
  "short_name": "Format Lab",
  "description": "Explore conversion paths and measure information loss locally.",
  "start_url": "./",
  "scope": "./",
  "display": "standalone",
  "background_color": "#f6f7fb",
  "theme_color": "#29255f",
  "icons": [
    {
      "src": "./favicon.svg",
      "sizes": "any",
      "type": "image/svg+xml",
      "purpose": "any maskable"
    }
  ]
 }
@@ -0,0 +1,54 @@
 const CACHE_PREFIX = "format-lab-shell-";
 const CACHE_NAME = CACHE_PREFIX + "0.1.0";
 const CORE = ["./", "./manifest.webmanifest", "./favicon.svg"];
 self.addEventListener("install", (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then(async (cache) => {
      await cache.addAll(CORE);
      const html = await (await fetch("./")).text();
      const assets = [...html.matchAll(/(?:src|href)="(\.\/assets\/[^"]+)"/g)]
        .map((match) => match[1])
        .filter(Boolean);
      await cache.addAll(assets);
    }),
  );
  self.skipWaiting();
 });
 self.addEventListener("activate", (event) => {
  event.waitUntil(
    caches
      .keys()
      .then((keys) =>
        Promise.all(
          keys
            .filter((key) => key.startsWith(CACHE_PREFIX) && key !== CACHE_NAME)
            .map((key) => caches.delete(key)),
        ),
      )
      .then(() => self.clients.claim()),
  );
 });
 self.addEventListener("fetch", (event) => {
  if (event.request.method !== "GET") return;
  const url = new URL(event.request.url);
  if (
    url.origin !== self.location.origin ||
    !url.pathname.startsWith(new URL(self.registration.scope).pathname)
  )
    return;
  event.respondWith(
    caches.match(event.request).then(
      (cached) =>
        cached ??
        fetch(event.request).then((response) => {
          if (response.ok) {
            const copy = response.clone();
            void caches
              .open(CACHE_NAME)
              .then((cache) => cache.put(event.request, copy));
          }
          return response;
        }),
    ),
  );
 });
@@ -0,0 +1,48 @@
 {
  "$schema": "https://git.add-ideas.de/lotobo/toolbox-sdk/raw/branch/main/schemas/toolbox-app.v1.schema.json",
  "schemaVersion": 1,
  "id": "de.add-ideas.format-lab",
  "name": "Format Lab",
  "version": "0.1.0",
  "description": "Explore conversion paths and measure information loss locally.",
  "entry": "./",
  "icon": "./favicon.svg",
  "categories": ["data", "developer", "media"],
  "tags": [
    "conversion",
    "round-trip",
    "information-loss",
    "formats",
    "csv",
    "json"
  ],
  "integration": {
    "contextVersion": 1,
    "launchModes": ["navigate", "new-tab"],
    "embedding": "unsupported"
  },
  "requirements": {
    "secureContext": false,
    "workers": false,
    "indexedDb": false,
    "crossOriginIsolated": false,
    "topLevelContext": false
  },
  "privacy": {
    "processing": "local",
    "fileUploads": true,
    "telemetry": false,
    "label": "Inputs and conversion evidence stay in this browser; nothing is uploaded."
  },
  "source": {
    "repository": "https://git.add-ideas.de/lotobo/format-lab",
    "license": "GPL-3.0-or-later"
  },
  "actions": [
    {
      "id": "source",
      "label": "Source",
      "url": "https://git.add-ideas.de/lotobo/format-lab"
    }
  ]
 }
@@ -0,0 +1,33 @@
 import { readFile, writeFile } from "node:fs/promises";
 import path from "node:path";
 import { fileURLToPath } from "node:url";
 import { format } from "prettier";
 const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
 const sourcePath = path.join(root, "src/toolbox/manifest.source.json");
 const outputPath = path.join(root, "public/toolbox-app.json");
 const source = JSON.parse(await readFile(sourcePath, "utf8"));
 const pkg = JSON.parse(await readFile(path.join(root, "package.json"), "utf8"));
 const versionSource = await readFile(path.join(root, "src/version.ts"), "utf8");
 const appVersion = /^export const APP_VERSION = "([^"]+)";$/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.localeCompare(b.name),
  )) {
    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.localeCompare(b),
 )) {
  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 +1,66 @@
 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",
 );
 const prefix = "/deep/nested/format-lab/";
 const types = new Map([
  [".css", "text/css; charset=utf-8"],
  [".html", "text/html; charset=utf-8"],
  [".js", "text/javascript; charset=utf-8"],
  [".json", "application/json; charset=utf-8"],
  [".webmanifest", "application/manifest+json; charset=utf-8"],
  [".svg", "image/svg+xml"],
  [".md", "text/markdown; charset=utf-8"],
  [".txt", "text/plain; charset=utf-8"],
  [".wasm", "application/wasm"],
  [".png", "image/png"],
  [".jpg", "image/jpeg"],
  [".webp", "image/webp"],
 ]);
 const headers = {
  "Content-Security-Policy":
    "default-src 'self'; base-uri 'self'; object-src 'none'; frame-ancestors 'none'; form-action 'self'; script-src 'self' 'wasm-unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob:; media-src 'self' blob:; connect-src 'self'; worker-src 'self' blob:; manifest-src 'self'",
  "Cross-Origin-Opener-Policy": "same-origin",
  "Cross-Origin-Resource-Policy": "same-origin",
  "Permissions-Policy":
    "camera=(), microphone=(), geolocation=(), usb=(), payment=()",
  "Referrer-Policy": "no-referrer",
  "X-Content-Type-Options": "nosniff",
 };
 const server = createServer(async (request, response) => {
  try {
    const url = new URL(request.url ?? "/", "http://127.0.0.1");
    const relative = decodeURIComponent(url.pathname).startsWith(prefix)
      ? decodeURIComponent(url.pathname).slice(prefix.length)
      : decodeURIComponent(url.pathname).replace(/^\/+/, "");
    const normalized = path.posix.normalize(relative || "index.html");
    if (
      normalized === ".." ||
      normalized.startsWith("../") ||
      path.isAbsolute(normalized)
    ) {
      response.writeHead(400).end("Bad request");
      return;
    }
    let file = path.join(root, normalized);
    if ((await stat(file).catch(() => null))?.isDirectory())
      file = path.join(file, "index.html");
    const content = await readFile(file);
    response.writeHead(200, {
      "Content-Type":
        types.get(path.extname(file)) ?? "application/octet-stream",
      "Cache-Control": "no-cache",
      ...headers,
    });
    response.end(content);
  } catch {
    response.writeHead(404, { "Content-Type": "text/plain; charset=utf-8" });
    response.end("Not found");
  }
 });
 server.listen(4201, "127.0.0.1", () => console.log("Test server ready"));
@@ -0,0 +1,35 @@
 import { lazy, Suspense, 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 { manifest } from "./toolbox/manifest";
 const Workbench = lazy(async () => ({
  default: (await import("./components/Workbench")).Workbench,
 }));
 export function App() {
  const [helpOpen, setHelpOpen] = useState(false);
  return (
    <ErrorBoundary>
      <AppShell
        app={manifest}
        manifestUrl="./toolbox-app.json"
        helpAction={{ onClick: () => setHelpOpen(true) }}
      >
        <Suspense
          fallback={
            <p className="loading" role="status">
              Preparing Format Lab…
            </p>
          }
        >
          <Workbench />
        </Suspense>
      </AppShell>
      <HelpDialog open={helpOpen} onClose={() => setHelpOpen(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>Format Lab 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 +1,47 @@
 import { useEffect, useRef } from "react";
 export function HelpDialog({
  open,
  onClose,
 }: {
  open: boolean;
  onClose: () => void;
 }) {
  const dialog = useRef<HTMLDialogElement>(null);
  useEffect(() => {
    const node = dialog.current;
    if (!node) return;
    if (open && !node.open) node.showModal();
    if (!open && node.open) node.close();
  }, [open]);
  return (
    <dialog
      ref={dialog}
      className="help-dialog"
      onClose={onClose}
      onCancel={onClose}
      aria-labelledby="help-title"
    >
      <div className="dialog-heading">
        <div>
          <p className="eyebrow">Local-first help</p>
          <h2 id="help-title">About Format Lab</h2>
        </div>
        <button type="button" onClick={onClose} aria-label="Close help">
          ×
        </button>
      </div>
      <p>
        Compare declared conversion boundaries across data, image, audio/video,
        and subtitle formats. Rank paths using only the properties relevant to
        your task.
      </p>
      <p>
        The structured-data lab executes bounded JSON, NDJSON, CSV, and typed
        XML round trips locally. “Expected” comes from the catalog; “measured”
        describes only the supplied sample and canonical model. Neither is an
        unconditional lossless claim.
      </p>
    </dialog>
  );
 }
@@ -0,0 +1,563 @@
 import { useMemo, useState, type ChangeEvent } from "react";
 import {
  stableStringify,
  triggerBlobDownload,
 } from "@add-ideas/toolbox-helpers";
 import {
  domains,
  edges,
  findRoutes,
  formats,
  labelFor,
  properties,
  type ConversionRoute,
  type DomainId,
  type Preservation,
 } from "../lab/catalog";
 import {
  runRoundTrip,
  type DataFormat,
  type RoundTripResult,
 } from "../lab/data";
 const SAMPLE = `[
  {
    "id": 1,
    "active": true,
    "name": "Café 🚲",
    "nullable": null,
    "nested": { "score": 1.25 }
  },
  {
    "id": 2,
    "active": false,
    "name": "=FORMULA",
    "nullable": "",
    "nested": [1, 2]
  }
 ]`;
 interface LabRecord {
  result: RoundTripResult;
  route: ConversionRoute;
 }
 function download(text: string, name: string, mediaType: string) {
  triggerBlobDownload(new Blob([text], { type: mediaType }), name);
 }
 function statusLabel(status: Preservation): string {
  if (status === "expected-preserved") return "Expected to preserve";
  if (status === "expected-lost") return "Expected loss";
  if (status === "conditional") return "Conditional";
  return "Unknown";
 }
 function FormatGraph({
  domain,
  from,
  to,
 }: {
  domain: DomainId;
  from: string;
  to: string;
 }) {
  const nodes = formats.filter((format) => format.domain === domain);
  const positions = Object.fromEntries(
    nodes.map((node, index) => {
      const angle = (Math.PI * 2 * index) / nodes.length - Math.PI / 2;
      return [
        node.id,
        { x: 300 + Math.cos(angle) * 215, y: 190 + Math.sin(angle) * 135 },
      ];
    }),
  ) as Record<string, { x: number; y: number }>;
  const domainEdges = edges.filter(
    (edge) => positions[edge.from] && positions[edge.to],
  );
  return (
    <svg
      className="format-graph"
      viewBox="0 0 600 380"
      role="img"
      aria-label={`${domains.find((item) => item.id === domain)?.label} conversion graph from ${labelFor(from)} to ${labelFor(to)}`}
    >
      <defs>
        <marker
          id={`arrow-${domain}`}
          viewBox="0 0 10 10"
          refX="8"
          refY="5"
          markerWidth="5"
          markerHeight="5"
          orient="auto-start-reverse"
        >
          <path d="M 0 0 L 10 5 L 0 10 z" />
        </marker>
      </defs>
      {domainEdges.map((edge, index) => {
        const start = positions[edge.from]!;
        const end = positions[edge.to]!;
        return (
          <line
            key={`${edge.from}-${edge.to}-${index}`}
            x1={start.x}
            y1={start.y}
            x2={end.x}
            y2={end.y}
            markerEnd={`url(#arrow-${domain})`}
          />
        );
      })}
      {nodes.map((node) => {
        const position = positions[node.id]!;
        return (
          <g
            key={node.id}
            className={
              node.id === from
                ? "source-node"
                : node.id === to
                  ? "target-node"
                  : ""
            }
          >
            <circle cx={position.x} cy={position.y} r="38" />
            <text x={position.x} y={position.y + 5} textAnchor="middle">
              {node.label}
            </text>
          </g>
        );
      })}
    </svg>
  );
 }
 const initialRoute = findRoutes(
  "data",
  "json",
  "csv",
  properties.data.map((item) => item.id),
 )[0]!;
 const initialRecord: LabRecord = {
  route: initialRoute,
  result: runRoundTrip(SAMPLE, initialRoute),
 };
 export function Workbench() {
  const [domain, setDomain] = useState<DomainId>("data");
  const [from, setFrom] = useState("json");
  const [to, setTo] = useState("csv");
  const [relevant, setRelevant] = useState(
    properties.data.map((property) => property.id),
  );
  const [routeIndex, setRouteIndex] = useState(0);
  const [source, setSource] = useState(SAMPLE);
  const [sourceName, setSourceName] = useState("round-trip.json");
  const [record, setRecord] = useState<LabRecord>(initialRecord);
  const [outputView, setOutputView] = useState<"target" | "roundtrip">(
    "target",
  );
  const [error, setError] = useState<string>();
  const domainFormats = formats.filter((format) => format.domain === domain);
  const routes = useMemo(
    () => findRoutes(domain, from, to, relevant),
    [domain, from, relevant, to],
  );
  const selectedRoute = routes[routeIndex] ?? routes[0];
  const graphEdges = edges.filter(
    (edge) =>
      domainFormats.some((format) => format.id === edge.from) &&
      domainFormats.some((format) => format.id === edge.to),
  );
  const report = useMemo(
    () =>
      `${stableStringify(
        {
          catalogVersion: "format-catalog-v1",
          route: record.route.formats,
          expected: record.route.summary,
          measured: record.result.measurements,
          notes: record.result.notes,
        },
        2,
        { maxTextChars: 2 * 1024 * 1024, maxDepth: 16, maxNodes: 20_000 },
      )}\n`,
    [record],
  );
  const selectDomain = (next: DomainId) => {
    const nextFormats = formats.filter((format) => format.domain === next);
    setDomain(next);
    setFrom(nextFormats[0]!.id);
    setTo(nextFormats[1]?.id ?? nextFormats[0]!.id);
    setRelevant(properties[next].map((property) => property.id));
    setRouteIndex(0);
  };
  const run = () => {
    try {
      if (domain !== "data" || !selectedRoute)
        throw new TypeError(
          "Measured conversion is available for structured-data routes in v0.1. Use the graph as an explicit planning contract for this domain.",
        );
      const result = runRoundTrip(source, selectedRoute);
      setRecord({ route: selectedRoute, result });
      setOutputView("target");
      setError(undefined);
    } catch (reason) {
      setError(
        `${reason instanceof Error ? reason.message : "Round trip failed."} The previous measured result was retained.`,
      );
    }
  };
  const openFile = async (event: ChangeEvent<HTMLInputElement>) => {
    const file = event.target.files?.[0];
    event.target.value = "";
    if (!file) return;
    if (file.size > 2 * 1024 * 1024) {
      setError("Input file exceeds 2 MiB. The previous result was retained.");
      return;
    }
    const extension = file.name.split(".").at(-1)?.toLowerCase();
    const format: DataFormat =
      extension === "csv"
        ? "csv"
        : extension === "xml"
          ? "xml"
          : extension === "ndjson" || extension === "jsonl"
            ? "ndjson"
            : "json";
    setDomain("data");
    setFrom(format);
    setTo(format === "csv" ? "json" : "csv");
    setRelevant(properties.data.map((property) => property.id));
    setRouteIndex(0);
    setSource(await file.text());
    setSourceName(file.name);
    setError(undefined);
  };
  const measuredByProperty = Object.fromEntries(
    record.result.measurements.map((measurement) => [
      measurement.property,
      measurement,
    ]),
  );
  return (
    <main className="workbench">
      <section className="hero">
        <div>
          <p className="eyebrow">Conversion paths with evidence</p>
          <h1>Format Lab</h1>
          <p>
            Rank routes by the properties you care about, then measure a real
            bounded round trip where the lab has an executable adapter.
          </p>
        </div>
        <span className="privacy-pill">Expected ≠ measured</span>
      </section>
      <section className="panel explorer" aria-labelledby="explorer-title">
        <div className="panel-heading">
          <div>
            <h2 id="explorer-title">Format path explorer</h2>
            <p>
              No route is called lossless; every status names its evidence
              boundary.
            </p>
          </div>
        </div>
        <div className="selection-grid">
          <label>
            Domain
            <select
              value={domain}
              onChange={(event) => selectDomain(event.target.value as DomainId)}
            >
              {domains.map((item) => (
                <option key={item.id} value={item.id}>
                  {item.label}
                </option>
              ))}
            </select>
          </label>
          <label>
            From
            <select
              aria-label="From format"
              value={from}
              onChange={(event) => {
                setFrom(event.target.value);
                setRouteIndex(0);
              }}
            >
              {domainFormats.map((format) => (
                <option key={format.id} value={format.id}>
                  {format.label}
                </option>
              ))}
            </select>
          </label>
          <label>
            To
            <select
              aria-label="To format"
              value={to}
              onChange={(event) => {
                setTo(event.target.value);
                setRouteIndex(0);
              }}
            >
              {domainFormats.map((format) => (
                <option key={format.id} value={format.id}>
                  {format.label}
                </option>
              ))}
            </select>
          </label>
        </div>
        <div className="explorer-grid">
          <FormatGraph domain={domain} from={from} to={to} />
          <div>
            <h3>Relevant properties</h3>
            <div className="property-list">
              {properties[domain].map((property) => (
                <label key={property.id}>
                  <input
                    type="checkbox"
                    checked={relevant.includes(property.id)}
                    onChange={(event) => {
                      setRelevant((current) =>
                        event.target.checked
                          ? [...current, property.id]
                          : current.filter((item) => item !== property.id),
                      );
                      setRouteIndex(0);
                    }}
                  />
                  {property.label}
                </label>
              ))}
            </div>
          </div>
        </div>
        <h3>Recommended paths</h3>
        <div className="route-list">
          {routes.slice(0, 5).map((route, index) => (
            <button
              type="button"
              className="route-card"
              aria-pressed={selectedRoute === route}
              key={route.formats.join(">")}
              onClick={() => setRouteIndex(index)}
            >
              <strong>{route.formats.map(labelFor).join(" → ")}</strong>
              <span>
                {route.edges.length || 0} conversion step
                {route.edges.length === 1 ? "" : "s"}
              </span>
              <span className="route-statuses">
                {Object.entries(route.summary).map(([property, status]) => (
                  <small className={status} key={property}>
                    {
                      properties[domain].find((item) => item.id === property)
                        ?.label
                    }
                    : {statusLabel(status)}
                  </small>
                ))}
              </span>
            </button>
          ))}
          {!routes.length ? (
            <p className="empty">
              No bounded catalog path connects these formats.
            </p>
          ) : null}
        </div>
        <details>
          <summary>
            Inspect all {graphEdges.length} directed conversion contracts
          </summary>
          <div className="table-scroll" tabIndex={0}>
            <table>
              <thead>
                <tr>
                  <th>From</th>
                  <th>To</th>
                  <th>Available in</th>
                  <th>Boundary</th>
                </tr>
              </thead>
              <tbody>
                {graphEdges.map((edge, index) => (
                  <tr key={`${edge.from}-${edge.to}-${index}`}>
                    <td>{labelFor(edge.from)}</td>
                    <td>{labelFor(edge.to)}</td>
                    <td>{edge.availability}</td>
                    <td>{edge.note}</td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        </details>
      </section>
      <section className="panel" aria-labelledby="lab-title">
        <div className="panel-heading">
          <div>
            <h2 id="lab-title">Measured structured-data round trip</h2>
            <p>
              {sourceName} · JSON, NDJSON, CSV and the typed lab XML record
              dialect
            </p>
          </div>
          <label className="button file-button">
            Open data
            <input
              type="file"
              data-testid="data-file"
              accept=".json,.jsonl,.ndjson,.csv,.xml,text/csv,application/json,text/xml"
              onChange={(event) => void openFile(event)}
            />
          </label>
        </div>
        <div className="lab-grid">
          <div>
            <label>
              Source data
              <textarea
                aria-label="Source data"
                value={source}
                onChange={(event) => setSource(event.target.value)}
                rows={22}
                spellCheck={false}
              />
            </label>
            <button
              className="primary-button top-gap"
              type="button"
              disabled={domain !== "data" || !selectedRoute}
              onClick={run}
            >
              Run selected round trip
            </button>
            {domain !== "data" ? (
              <p className="warning">
                This v0.1 lab exposes catalog contracts for{" "}
                {domains.find((item) => item.id === domain)?.label}; executable
                conversion remains in the specialized Toolbox app.
              </p>
            ) : null}
            {error ? (
              <p className="error" role="alert">
                {error}
              </p>
            ) : null}
          </div>
          <div>
            <nav className="tabs" aria-label="Output views">
              <button
                type="button"
                aria-pressed={outputView === "target"}
                onClick={() => setOutputView("target")}
              >
                Target output
              </button>
              <button
                type="button"
                aria-pressed={outputView === "roundtrip"}
                onClick={() => setOutputView("roundtrip")}
              >
                Round-trip source
              </button>
            </nav>
            <textarea
              aria-label="Conversion output"
              readOnly
              value={
                outputView === "target"
                  ? record.result.targetText
                  : record.result.roundTripText
              }
              rows={22}
              spellCheck={false}
            />
            <div className="action-row top-gap">
              <button
                type="button"
                onClick={() =>
                  download(
                    record.result.targetText,
                    `converted.${record.route.formats.at(-1)}`,
                    "text/plain;charset=utf-8",
                  )
                }
              >
                Download target
              </button>
              <button
                type="button"
                onClick={() =>
                  download(report, "format-lab-report.json", "application/json")
                }
              >
                Download evidence report
              </button>
            </div>
          </div>
        </div>
        <div className="table-scroll evidence-table" tabIndex={0}>
          <table>
            <thead>
              <tr>
                <th>Property</th>
                <th>Catalog expectation</th>
                <th>Round-trip measurement</th>
                <th>Evidence boundary</th>
              </tr>
            </thead>
            <tbody>
              {properties.data.map((property) => {
                const measurement = measuredByProperty[property.id];
                return (
                  <tr key={property.id}>
                    <th>{property.label}</th>
                    <td>
                      <span
                        className={`status ${record.route.summary[property.id]}`}
                      >
                        {statusLabel(
                          record.route.summary[property.id] ?? "unknown",
                        )}
                      </span>
                    </td>
                    <td>
                      <span className={`status ${measurement?.status}`}>
                        {measurement?.status.replaceAll("-", " ")}
                      </span>
                    </td>
                    <td>{measurement?.detail}</td>
                  </tr>
                );
              })}
            </tbody>
          </table>
        </div>
        {record.result.notes.length ? (
          <ul className="notice-list">
            {record.result.notes.map((note) => (
              <li key={note}>{note}</li>
            ))}
          </ul>
        ) : null}
      </section>
    </main>
  );
 }
@@ -0,0 +1,607 @@
 export type DomainId = "data" | "image" | "av" | "subtitle";
 export type Preservation =
  "expected-preserved" | "conditional" | "expected-lost" | "unknown";
 export interface FormatDefinition {
  id: string;
  label: string;
  domain: DomainId;
  note: string;
 }
 export interface PropertyDefinition {
  id: string;
  label: string;
 }
 export interface ConversionEdge {
  from: string;
  to: string;
  availability: "lab" | "toolbox" | "browser" | "catalog";
  statuses: Record<string, Preservation>;
  note: string;
 }
 export interface ConversionRoute {
  formats: string[];
  edges: ConversionEdge[];
  score: number;
  summary: Record<string, Preservation>;
 }
 export const domains: Array<{ id: DomainId; label: string }> = [
  { id: "data", label: "Structured data" },
  { id: "image", label: "Images" },
  { id: "av", label: "Audio & video" },
  { id: "subtitle", label: "Subtitles" },
 ];
 export const properties: Record<DomainId, PropertyDefinition[]> = {
  data: [
    { id: "record-order", label: "Record order" },
    { id: "field-names", label: "Field names" },
    { id: "field-order", label: "Field order" },
    { id: "scalar-types", label: "Scalar types" },
    { id: "nulls", label: "Null values" },
    { id: "nested", label: "Nested values" },
    { id: "numbers", label: "Numeric values" },
    { id: "unicode", label: "Unicode text" },
    { id: "metadata", label: "Document metadata" },
  ],
  image: [
    { id: "dimensions", label: "Dimensions" },
    { id: "pixels", label: "Pixel values" },
    { id: "alpha", label: "Alpha channel" },
    { id: "colour", label: "Colour profile / depth" },
    { id: "metadata", label: "EXIF / metadata" },
    { id: "animation", label: "Animation" },
    { id: "vectors", label: "Vector geometry" },
    { id: "editable-text", label: "Editable text" },
  ],
  av: [
    { id: "duration", label: "Duration" },
    { id: "timestamps", label: "Timestamps" },
    { id: "video", label: "Video samples" },
    { id: "audio", label: "Audio samples" },
    { id: "channels", label: "Channel layout" },
    { id: "subtitles", label: "Subtitle tracks" },
    { id: "chapters", label: "Chapters" },
    { id: "metadata", label: "Container metadata" },
  ],
  subtitle: [
    { id: "timing", label: "Cue timing" },
    { id: "text", label: "Cue text" },
    { id: "ids", label: "Cue identifiers" },
    { id: "position", label: "Position / regions" },
    { id: "styles", label: "Styling" },
    { id: "speakers", label: "Speaker semantics" },
    { id: "metadata", label: "Document metadata" },
  ],
 };
 export const formats: FormatDefinition[] = [
  {
    id: "json",
    label: "JSON",
    domain: "data",
    note: "Nested typed values; object order is conventional, not semantic.",
  },
  {
    id: "ndjson",
    label: "NDJSON",
    domain: "data",
    note: "One JSON record per line; no document wrapper.",
  },
  {
    id: "csv",
    label: "CSV",
    domain: "data",
    note: "Rectangular text cells; dialect and type schema are external.",
  },
  {
    id: "xml",
    label: "XML",
    domain: "data",
    note: "Flexible tree with namespaces, attributes and mixed content.",
  },
  {
    id: "png",
    label: "PNG",
    domain: "image",
    note: "Raster, lossless compression, alpha and optional metadata.",
  },
  {
    id: "jpeg",
    label: "JPEG",
    domain: "image",
    note: "Lossy raster without alpha; broad photo support.",
  },
  {
    id: "webp",
    label: "WebP",
    domain: "image",
    note: "Lossy or lossless raster, alpha and animation.",
  },
  {
    id: "svg",
    label: "SVG",
    domain: "image",
    note: "Vector/XML document with text and external-resource risks.",
  },
  {
    id: "wav",
    label: "WAV",
    domain: "av",
    note: "Audio container, commonly uncompressed PCM.",
  },
  {
    id: "flac",
    label: "FLAC",
    domain: "av",
    note: "Lossless compressed audio and metadata.",
  },
  {
    id: "mp3",
    label: "MP3",
    domain: "av",
    note: "Lossy audio with limited channel/metadata models.",
  },
  {
    id: "opus",
    label: "Opus",
    domain: "av",
    note: "Lossy speech/music codec, commonly in Ogg or WebM.",
  },
  {
    id: "mp4",
    label: "MP4",
    domain: "av",
    note: "Timed media container; actual preservation depends on streams.",
  },
  {
    id: "webm",
    label: "WebM",
    domain: "av",
    note: "Web-oriented Matroska profile with constrained codecs.",
  },
  {
    id: "mkv",
    label: "Matroska",
    domain: "av",
    note: "Flexible multi-track container with attachments and chapters.",
  },
  {
    id: "srt",
    label: "SRT",
    domain: "subtitle",
    note: "Simple numbered cues with de-facto inline formatting.",
  },
  {
    id: "vtt",
    label: "WebVTT",
    domain: "subtitle",
    note: "Cue identifiers, settings, regions and web timing.",
  },
  {
    id: "ass",
    label: "ASS",
    domain: "subtitle",
    note: "Rich scripted styling, positioning and events.",
  },
  {
    id: "ttml",
    label: "TTML",
    domain: "subtitle",
    note: "XML timing and styling profiles vary by ecosystem.",
  },
 ];
 function statuses(
  domain: DomainId,
  values: Partial<Record<string, Preservation>>,
 ): Record<string, Preservation> {
  return Object.fromEntries(
    properties[domain].map(({ id }) => [id, values[id] ?? "unknown"]),
  );
 }
 const dataTyped = statuses("data", {
  "record-order": "expected-preserved",
  "field-names": "expected-preserved",
  "field-order": "conditional",
  "scalar-types": "expected-preserved",
  nulls: "expected-preserved",
  nested: "expected-preserved",
  numbers: "conditional",
  unicode: "expected-preserved",
  metadata: "conditional",
 });
 const dataCsv = statuses("data", {
  "record-order": "expected-preserved",
  "field-names": "expected-preserved",
  "field-order": "conditional",
  "scalar-types": "expected-lost",
  nulls: "expected-lost",
  nested: "conditional",
  numbers: "conditional",
  unicode: "conditional",
  metadata: "expected-lost",
 });
 const rasterLossy = statuses("image", {
  dimensions: "expected-preserved",
  pixels: "expected-lost",
  alpha: "expected-lost",
  colour: "conditional",
  metadata: "expected-lost",
  animation: "expected-lost",
  vectors: "expected-lost",
  "editable-text": "expected-lost",
 });
 const rasterConditional = statuses("image", {
  dimensions: "expected-preserved",
  pixels: "conditional",
  alpha: "conditional",
  colour: "conditional",
  metadata: "expected-lost",
  animation: "conditional",
  vectors: "expected-lost",
  "editable-text": "expected-lost",
 });
 const audioLossy = statuses("av", {
  duration: "conditional",
  timestamps: "conditional",
  video: "unknown",
  audio: "expected-lost",
  channels: "conditional",
  subtitles: "expected-lost",
  chapters: "expected-lost",
  metadata: "conditional",
 });
 const audioLossless = statuses("av", {
  duration: "expected-preserved",
  timestamps: "conditional",
  video: "unknown",
  audio: "expected-preserved",
  channels: "expected-preserved",
  subtitles: "expected-lost",
  chapters: "expected-lost",
  metadata: "conditional",
 });
 const remux = statuses("av", {
  duration: "conditional",
  timestamps: "conditional",
  video: "conditional",
  audio: "conditional",
  channels: "conditional",
  subtitles: "conditional",
  chapters: "conditional",
  metadata: "conditional",
 });
 const subtitleSimple = statuses("subtitle", {
  timing: "conditional",
  text: "expected-preserved",
  ids: "conditional",
  position: "expected-lost",
  styles: "expected-lost",
  speakers: "conditional",
  metadata: "expected-lost",
 });
 const subtitleRich = statuses("subtitle", {
  timing: "conditional",
  text: "expected-preserved",
  ids: "conditional",
  position: "conditional",
  styles: "conditional",
  speakers: "conditional",
  metadata: "conditional",
 });
 function edge(
  from: string,
  to: string,
  availability: ConversionEdge["availability"],
  values: Record<string, Preservation>,
  note: string,
 ): ConversionEdge {
  return { from, to, availability, statuses: { ...values }, note };
 }
 export const edges: ConversionEdge[] = [
  edge(
    "json",
    "ndjson",
    "lab",
    dataTyped,
    "Wrapper-level values and metadata need an explicit record mapping.",
  ),
  edge(
    "ndjson",
    "json",
    "lab",
    dataTyped,
    "The lab writes an array; an original wrapper is not reconstructed.",
  ),
  edge(
    "json",
    "xml",
    "lab",
    dataTyped,
    "Measured lab XML uses typed field elements; arbitrary XML mappings differ.",
  ),
  edge(
    "xml",
    "json",
    "lab",
    dataTyped,
    "Generic XML attributes/mixed content are outside the lab record dialect.",
  ),
  edge(
    "ndjson",
    "xml",
    "lab",
    dataTyped,
    "Records pass through the bounded canonical model.",
  ),
  edge(
    "xml",
    "ndjson",
    "lab",
    dataTyped,
    "Document-level XML information is not part of NDJSON.",
  ),
  ...["json", "ndjson", "xml"].flatMap((format) => [
    edge(
      format,
      "csv",
      "lab",
      dataCsv,
      "CSV has text cells and no intrinsic null/type/nesting schema.",
    ),
    edge(
      "csv",
      format,
      "lab",
      dataCsv,
      "CSV cells enter the canonical model as strings.",
    ),
  ]),
  edge(
    "png",
    "jpeg",
    "browser",
    rasterLossy,
    "Canvas/JPEG encoding is lossy and flattens alpha.",
  ),
  edge(
    "webp",
    "jpeg",
    "browser",
    rasterLossy,
    "Decode/re-encode can lose alpha, animation and metadata.",
  ),
  edge(
    "svg",
    "png",
    "toolbox",
    rasterConditional,
    "Rasterization fixes a resolution and loses editability.",
  ),
  edge(
    "svg",
    "webp",
    "toolbox",
    rasterConditional,
    "Rasterization and WebP mode/settings determine pixel loss.",
  ),
  edge(
    "jpeg",
    "png",
    "browser",
    rasterConditional,
    "PNG cannot restore JPEG-discarded samples or metadata.",
  ),
  edge(
    "png",
    "webp",
    "browser",
    rasterConditional,
    "WebP lossless/lossy mode and animation handling must be measured.",
  ),
  edge(
    "webp",
    "png",
    "browser",
    rasterConditional,
    "A still PNG cannot retain WebP animation; metadata is commonly stripped.",
  ),
  edge(
    "wav",
    "flac",
    "toolbox",
    audioLossless,
    "PCM compatibility and metadata mapping still need inspection.",
  ),
  edge(
    "flac",
    "wav",
    "toolbox",
    audioLossless,
    "Decoded samples can match while metadata/container timing changes.",
  ),
  ...["wav", "flac"].flatMap((from) =>
    ["mp3", "opus"].map((to) =>
      edge(
        from,
        to,
        "toolbox",
        audioLossy,
        "A lossy audio encode discards sample information.",
      ),
    ),
  ),
  ...["mp3", "opus"].flatMap((from) =>
    ["wav", "flac"].map((to) =>
      edge(
        from,
        to,
        "toolbox",
        audioLossy,
        "Decoding does not restore information discarded by the source codec.",
      ),
    ),
  ),
  edge(
    "mp4",
    "mkv",
    "toolbox",
    remux,
    "Stream copy is conditional on codec and attachment/metadata mapping.",
  ),
  edge(
    "mkv",
    "mp4",
    "toolbox",
    remux,
    "MP4 may not represent every Matroska track, attachment or chapter.",
  ),
  edge(
    "mkv",
    "webm",
    "toolbox",
    remux,
    "WebM accepts a constrained codec/track subset.",
  ),
  edge(
    "webm",
    "mkv",
    "toolbox",
    remux,
    "The streams may copy while container metadata changes.",
  ),
  edge(
    "mp4",
    "webm",
    "toolbox",
    statuses("av", {
      ...remux,
      video: "expected-lost",
      audio: "expected-lost",
    }),
    "Typical codecs require transcoding; inspect each stream.",
  ),
  edge(
    "webm",
    "mp4",
    "toolbox",
    statuses("av", {
      ...remux,
      video: "expected-lost",
      audio: "expected-lost",
    }),
    "Typical codecs require transcoding; inspect each stream.",
  ),
  ...["srt", "vtt", "ass", "ttml"].flatMap((from) =>
    ["srt", "vtt", "ass", "ttml"]
      .filter((to) => to !== from)
      .map((to) =>
        edge(
          from,
          to,
          "toolbox",
          from === "srt" || to === "srt" ? subtitleSimple : subtitleRich,
          "Timing precision, profiles and styling constructs require cue-level verification.",
        ),
      ),
  ),
 ];
 const rank: Record<Preservation, number> = {
  "expected-preserved": 0,
  conditional: 2,
  unknown: 4,
  "expected-lost": 8,
 };
 function summarize(
  route: ConversionEdge[],
  relevant: string[],
 ): Record<string, Preservation> {
  return Object.fromEntries(
    relevant.map((property) => {
      const worst = route.reduce<Preservation>(
        (current, item) =>
          rank[item.statuses[property] ?? "unknown"] > rank[current]
            ? (item.statuses[property] ?? "unknown")
            : current,
        "expected-preserved",
      );
      return [property, worst];
    }),
  );
 }
 export function findRoutes(
  domain: DomainId,
  from: string,
  to: string,
  relevant: string[],
  maxHops = 4,
 ): ConversionRoute[] {
  const allowed = new Set(
    formats
      .filter((format) => format.domain === domain)
      .map((format) => format.id),
  );
  if (!allowed.has(from) || !allowed.has(to)) return [];
  if (from === to)
    return [
      {
        formats: [from],
        edges: [],
        score: 0,
        summary: Object.fromEntries(
          relevant.map((property) => [property, "expected-preserved"]),
        ),
      },
    ];
  const routes: ConversionRoute[] = [];
  const visit = (
    current: string,
    path: string[],
    pathEdges: ConversionEdge[],
  ) => {
    if (pathEdges.length >= maxHops) return;
    for (const item of edges.filter(
      (candidate) => candidate.from === current && allowed.has(candidate.to),
    )) {
      if (path.includes(item.to)) continue;
      const nextPath = [...path, item.to];
      const nextEdges = [...pathEdges, item];
      if (item.to === to) {
        const summary = summarize(nextEdges, relevant);
        routes.push({
          formats: nextPath,
          edges: nextEdges,
          summary,
          score:
            Object.values(summary).reduce(
              (sum, status) => sum + rank[status],
              0,
            ) +
            nextEdges.length * 0.1,
        });
      } else visit(item.to, nextPath, nextEdges);
    }
  };
  visit(from, [from], []);
  return routes.sort(
    (left, right) =>
      left.score - right.score ||
      left.edges.length - right.edges.length ||
      left.formats.join(">").localeCompare(right.formats.join(">")),
  );
 }
 export function labelFor(format: string): string {
  return formats.find((item) => item.id === format)?.label ?? format;
 }
@@ -0,0 +1,457 @@
 import {
  parseCsv,
  safeJsonParse,
  stableStringify,
  stringifyCsv,
 } from "@add-ideas/toolbox-helpers";
 import type { ConversionRoute } from "./catalog";
 export type DataFormat = "json" | "ndjson" | "csv" | "xml";
 export type MeasurementStatus =
  "measured-preserved" | "measured-changed" | "not-tested";
 export interface DataDocument {
  rows: Array<Record<string, unknown>>;
  notes: string[];
 }
 export interface PropertyMeasurement {
  property: string;
  status: MeasurementStatus;
  detail: string;
 }
 export interface RoundTripResult {
  route: string[];
  targetText: string;
  roundTripText: string;
  original: DataDocument;
  roundTrip: DataDocument;
  measurements: PropertyMeasurement[];
  notes: string[];
 }
 const MAX_SOURCE_BYTES = 2 * 1024 * 1024;
 const MAX_OUTPUT_BYTES = 8 * 1024 * 1024;
 const MAX_ROWS = 10_000;
 const MAX_COLUMNS = 200;
 const MAX_VALUES = 500_000;
 const dangerous = new Set(["__proto__", "constructor", "prototype"]);
 const encoder = new TextEncoder();
 function byteLength(value: string): number {
  return encoder.encode(value).byteLength;
 }
 function assertText(value: string, label: string): string {
  if (byteLength(value) > MAX_SOURCE_BYTES)
    throw new RangeError(`${label} exceeds the 2 MiB input limit.`);
  if (value.includes("\0"))
    throw new SyntaxError(`${label} contains NUL bytes.`);
  return value;
 }
 function object(value: unknown): Record<string, unknown> | undefined {
  return value !== null && typeof value === "object" && !Array.isArray(value)
    ? (value as Record<string, unknown>)
    : undefined;
 }
 function validateRows(rows: unknown[], notes: string[]): DataDocument {
  if (rows.length > MAX_ROWS)
    throw new RangeError(
      `Data is limited to ${MAX_ROWS.toLocaleString()} records.`,
    );
  let values = 0;
  const normalized = rows.map((value, index) => {
    const record = object(value);
    if (!record) throw new TypeError(`Record ${index + 1} must be an object.`);
    const keys = Object.keys(record);
    if (keys.length > MAX_COLUMNS)
      throw new RangeError(
        `Record ${index + 1} exceeds ${MAX_COLUMNS} fields.`,
      );
    for (const key of keys)
      if (dangerous.has(key))
        throw new TypeError(`Dangerous field name ${key} is rejected.`);
    values += keys.length;
    if (values > MAX_VALUES)
      throw new RangeError(
        `Data is limited to ${MAX_VALUES.toLocaleString()} top-level values.`,
      );
    return Object.fromEntries(keys.map((key) => [key, record[key]]));
  });
  return { rows: normalized, notes };
 }
 function parseJson(source: string): DataDocument {
  const value = safeJsonParse(assertText(source, "JSON"), {
    maxTextChars: MAX_SOURCE_BYTES,
    maxDepth: 64,
    maxNodes: 200_000,
    rejectDangerousKeys: true,
  });
  const numericNote =
    "Numeric measurement begins after browser JSON parsing; lexical precision beyond IEEE-754 is not independently tested.";
  if (Array.isArray(value)) return validateRows(value, [numericNote]);
  const root = object(value);
  if (root && Array.isArray(root.records))
    return validateRows(root.records, [
      "The JSON records wrapper was mapped to rows; sibling wrapper metadata is outside the canonical model.",
      numericNote,
    ]);
  if (root)
    return validateRows(
      [root],
      ["A top-level JSON object was treated as one record.", numericNote],
    );
  throw new TypeError(
    "JSON must be an array of objects, an object, or an object with a records array.",
  );
 }
 function parseNdjson(source: string): DataDocument {
  const text = assertText(source, "NDJSON");
  const lines = text.split(/\r\n|\n|\r/gu).filter((line) => line.trim());
  if (lines.length > MAX_ROWS)
    throw new RangeError(
      `NDJSON is limited to ${MAX_ROWS.toLocaleString()} records.`,
    );
  const rows = lines.map((line, index) => {
    try {
      return safeJsonParse(line, {
        maxTextChars: MAX_SOURCE_BYTES,
        maxDepth: 64,
        maxNodes: 100_000,
        rejectDangerousKeys: true,
      });
    } catch (reason) {
      throw new SyntaxError(
        `NDJSON line ${index + 1}: ${reason instanceof Error ? reason.message : "invalid JSON"}`,
        { cause: reason },
      );
    }
  });
  return validateRows(rows, [
    "Numeric measurement begins after browser JSON parsing; lexical precision beyond IEEE-754 is not independently tested.",
  ]);
 }
 function parseCsvDocument(source: string): DataDocument {
  const table = parseCsv(assertText(source, "CSV"), {
    maxRows: MAX_ROWS + 1,
    maxColumns: MAX_COLUMNS,
    maxFieldChars: 256 * 1024,
  });
  const headers = table[0] ?? [];
  if (!headers.length || headers.some((header) => !header))
    throw new TypeError("CSV needs a non-empty heading row.");
  if (new Set(headers).size !== headers.length)
    throw new TypeError("CSV heading names must be unique.");
  headers.forEach((header) => {
    if (dangerous.has(header))
      throw new TypeError(`Dangerous field name ${header} is rejected.`);
  });
  const rows = table
    .slice(1)
    .map((cells) =>
      Object.fromEntries(
        headers.map((header, index) => [header, cells[index] ?? ""]),
      ),
    );
  return validateRows(rows, [
    "CSV cells were read as strings because CSV carries no intrinsic scalar-type or null schema.",
  ]);
 }
 function decodeField(element: Element, notes: string[]): unknown {
  const type = element.getAttribute("type") ?? "string";
  const text = element.textContent ?? "";
  if (type === "string") return text;
  if (type === "null") return null;
  if (type === "boolean") {
    if (text === "true") return true;
    if (text === "false") return false;
  }
  if (type === "number") {
    const number = Number(text);
    if (Number.isFinite(number)) return number;
  }
  if (type === "json")
    try {
      return safeJsonParse(text, {
        maxTextChars: MAX_SOURCE_BYTES,
        maxDepth: 64,
        maxNodes: 100_000,
        rejectDangerousKeys: true,
      });
    } catch {
      /* fall through to a visible string and note */
    }
  notes.push(
    `XML field ${element.getAttribute("name") ?? element.localName} has an invalid/unknown ${type} type marker and was kept as text.`,
  );
  return text;
 }
 function parseXmlDocument(source: string): DataDocument {
  const text = assertText(source, "XML");
  if (/<!DOCTYPE/iu.test(text))
    throw new SyntaxError("DOCTYPE is disabled for XML conversion.");
  const document = new DOMParser().parseFromString(text, "application/xml");
  if (document.querySelector("parsererror"))
    throw new SyntaxError("XML is not well formed.");
  const rowElements = Array.from(document.documentElement.children).filter(
    (element) => element.localName === "row",
  );
  if (!rowElements.length)
    throw new TypeError(
      "XML needs row elements directly below its document element.",
    );
  const notes: string[] = [];
  const typed = rowElements.some((row) =>
    Array.from(row.children).some(
      (field) => field.localName === "field" && field.hasAttribute("name"),
    ),
  );
  if (!typed)
    notes.push(
      "Generic XML child elements were mapped to string fields; attributes, namespaces, comments and mixed content are outside this record mapping.",
    );
  const rows = rowElements.map((row, rowIndex) => {
    const record: Record<string, unknown> = Object.create(null) as Record<
      string,
      unknown
    >;
    for (const field of Array.from(row.children)) {
      const name =
        typed && field.localName === "field"
          ? field.getAttribute("name")
          : field.localName;
      if (!name)
        throw new TypeError(`XML row ${rowIndex + 1} has an unnamed field.`);
      if (dangerous.has(name))
        throw new TypeError(`Dangerous field name ${name} is rejected.`);
      if (Object.hasOwn(record, name))
        throw new TypeError(
          `XML row ${rowIndex + 1} repeats field ${name}; arrays need an explicit typed JSON field.`,
        );
      record[name] = typed
        ? decodeField(field, notes)
        : (field.textContent ?? "");
    }
    return record;
  });
  return validateRows(rows, notes);
 }
 export function parseData(source: string, format: DataFormat): DataDocument {
  if (format === "json") return parseJson(source);
  if (format === "ndjson") return parseNdjson(source);
  if (format === "csv") return parseCsvDocument(source);
  return parseXmlDocument(source);
 }
 function escapeXml(value: string): string {
  return value
    .replaceAll("&", "&amp;")
    .replaceAll("<", "&lt;")
    .replaceAll(">", "&gt;")
    .replaceAll('"', "&quot;")
    .replaceAll("'", "&apos;");
 }
 function xmlField(name: string, value: unknown): string {
  const [type, text] =
    value === null
      ? ["null", ""]
      : typeof value === "string"
        ? ["string", value]
        : typeof value === "number"
          ? ["number", String(value)]
          : typeof value === "boolean"
            ? ["boolean", String(value)]
            : [
                "json",
                stableStringify(value, undefined, {
                  maxTextChars: MAX_OUTPUT_BYTES,
                  maxDepth: 64,
                  maxNodes: 200_000,
                }),
              ];
  return `<field name="${escapeXml(name)}" type="${type}">${escapeXml(text)}</field>`;
 }
 function csvCell(value: unknown): unknown {
  const text =
    value === null
      ? ""
      : typeof value === "object"
        ? stableStringify(value, undefined, {
            maxTextChars: MAX_OUTPUT_BYTES,
            maxDepth: 64,
            maxNodes: 200_000,
          })
        : String(value);
  return /^[\t\r\n ]*[=+\-@]/u.test(text) ? `'${text}` : text;
 }
 export function serializeData(
  document: DataDocument,
  format: DataFormat,
 ): string {
  let output: string;
  if (format === "json") output = `${JSON.stringify(document.rows, null, 2)}\n`;
  else if (format === "ndjson")
    output = `${document.rows.map((row) => JSON.stringify(row)).join("\n")}\n`;
  else if (format === "csv") {
    const headers: string[] = [];
    const seen = new Set<string>();
    document.rows.forEach((row) =>
      Object.keys(row).forEach((key) => {
        if (!seen.has(key)) {
          seen.add(key);
          headers.push(key);
        }
      }),
    );
    output = `${stringifyCsv([
      headers,
      ...document.rows.map((row) =>
        headers.map((header) => csvCell(row[header])),
      ),
    ])}\r\n`;
  } else
    output = `<?xml version="1.0" encoding="UTF-8"?>\n<records>\n${document.rows
      .map(
        (row) =>
          `  <row>${Object.entries(row)
            .map(([name, value]) => xmlField(name, value))
            .join("")}</row>`,
      )
      .join("\n")}\n</records>\n`;
  if (byteLength(output) > MAX_OUTPUT_BYTES)
    throw new RangeError("Converted output exceeds the 8 MiB limit.");
  return output;
 }
 function scalarType(value: unknown): string {
  if (value === null) return "null";
  if (Array.isArray(value)) return "array";
  return typeof value === "object" ? "object" : typeof value;
 }
 function signature(
  rows: Array<Record<string, unknown>>,
  property: string,
 ): string {
  if (property === "record-order")
    return stableStringify(rows.map((row) => stableStringify(row)));
  if (property === "field-names")
    return stableStringify(rows.map((row) => Object.keys(row).sort()));
  if (property === "field-order")
    return stableStringify(rows.map((row) => Object.keys(row)));
  const values: Array<[string, unknown]> = [];
  const walk = (value: unknown, path: string) => {
    if (property === "scalar-types") values.push([path, scalarType(value)]);
    if (property === "nulls" && value === null) values.push([path, null]);
    if (property === "nested" && value !== null && typeof value === "object")
      values.push([path, value]);
    if (property === "numbers" && typeof value === "number")
      values.push([path, value]);
    if (property === "unicode" && typeof value === "string")
      values.push([path, value]);
    if (Array.isArray(value))
      value.forEach((item, index) => walk(item, `${path}[${index}]`));
    else {
      const record = object(value);
      if (record)
        Object.entries(record).forEach(([key, item]) =>
          walk(item, `${path}.${key}`),
        );
    }
  };
  rows.forEach((row, rowIndex) =>
    Object.entries(row).forEach(([key, value]) =>
      walk(value, `${rowIndex}.${key}`),
    ),
  );
  return stableStringify(values);
 }
 export function measureData(
  original: DataDocument,
  roundTrip: DataDocument,
 ): PropertyMeasurement[] {
  return [
    "record-order",
    "field-names",
    "field-order",
    "scalar-types",
    "nulls",
    "nested",
    "numbers",
    "unicode",
  ]
    .map<PropertyMeasurement>((property) => {
      const left = signature(original.rows, property);
      const right = signature(roundTrip.rows, property);
      return {
        property,
        status: left === right ? "measured-preserved" : "measured-changed",
        detail:
          left === right
            ? "The bounded canonical signatures matched after the complete round trip."
            : "The bounded canonical signatures differed after the complete round trip.",
      };
    })
    .concat({
      property: "metadata",
      status: "not-tested",
      detail:
        "The record lab does not model arbitrary document metadata, comments, namespaces or wrappers.",
    });
 }
 export function runRoundTrip(
  source: string,
  route: ConversionRoute,
 ): RoundTripResult {
  if (
    !route.formats.length ||
    route.formats.some(
      (format) => !["json", "ndjson", "csv", "xml"].includes(format),
    )
  )
    throw new TypeError(
      "The measured lab currently runs structured-data routes only.",
    );
  const sourceFormat = route.formats[0] as DataFormat;
  const original = parseData(source, sourceFormat);
  let current = original;
  let targetText = source;
  const notes = [...original.notes];
  for (const format of route.formats.slice(1)) {
    targetText = serializeData(current, format as DataFormat);
    current = parseData(targetText, format as DataFormat);
    notes.push(
      ...current.notes.map((note) => `${format.toUpperCase()}: ${note}`),
    );
  }
  const roundTripText = serializeData(current, sourceFormat);
  const roundTrip = parseData(roundTripText, sourceFormat);
  notes.push(
    ...roundTrip.notes.map(
      (note) => `Round-trip ${sourceFormat.toUpperCase()}: ${note}`,
    ),
  );
  return {
    route: route.formats,
    targetText,
    roundTripText,
    original,
    roundTrip,
    measurements: measureData(original, roundTrip),
    notes: [...new Set(notes)],
  };
 }
@@ -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 +1,768 @@
 :root {
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  color: #242233;
  background: #f3f4f8;
  font-synthesis: none;
  --surface: #fff;
  --surface-muted: #f3f1fa;
  --line: #d8d6e5;
  --ink-muted: #66637a;
  --accent: #5b4ec4;
  --accent-dark: #4336a4;
  --danger: #a5263d;
  --warning: #8a5700;
  --success: #187148;
 }
 :root[data-toolbox-theme="dark"] {
  color: #f0eff8;
  background: #15141b;
  --surface: #211f29;
  --surface-muted: #2a2735;
  --line: #454153;
  --ink-muted: #b9b5c8;
  --accent: #a99cff;
  --accent-dark: #c0b7ff;
  --danger: #ff91a2;
  --warning: #ffd078;
  --success: #78d7a9;
 }
@media (prefers-color-scheme: dark) {
  :root:not([data-toolbox-theme="light"]) {
    color: #f0eff8;
    background: #15141b;
    --surface: #211f29;
    --surface-muted: #2a2735;
    --line: #454153;
    --ink-muted: #b9b5c8;
    --accent: #a99cff;
    --accent-dark: #c0b7ff;
    --danger: #ff91a2;
    --warning: #ffd078;
    --success: #78d7a9;
  }
 }
 * {
  box-sizing: border-box;
 }
 body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: inherit;
  color: inherit;
 }
 button,
 input,
 select,
 textarea {
  color: inherit;
  font: inherit;
 }
 button,
 .button,
 input,
 select,
 textarea {
  border: 1px solid var(--line);
  border-radius: 0.72rem;
  background: var(--surface);
 }
 button,
 .button {
  min-height: 2.65rem;
  padding: 0.58rem 0.9rem;
  cursor: pointer;
  font-weight: 750;
 }
 button:hover,
 .button:hover {
  border-color: var(--accent);
 }
 button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
 }
 button:focus-visible,
 input:focus-visible,
 select:focus-visible,
 textarea:focus-visible,
 .button:focus-within {
  outline: 3px solid color-mix(in srgb, var(--accent) 36%, transparent);
  outline-offset: 2px;
 }
 input,
 select,
 textarea {
  width: 100%;
  min-height: 2.55rem;
  padding: 0.55rem 0.65rem;
 }
 textarea {
  resize: vertical;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.84rem;
  line-height: 1.5;
  tab-size: 2;
 }
 .workbench {
  width: min(100%, 90rem);
  margin: 0 auto;
  padding: 1.4rem clamp(0.75rem, 2.5vw, 2rem) 3rem;
 }
 .hero,
 .panel-heading,
 .source-grid,
 .option-grid,
 .tabs,
 .workspace-grid,
 .range-inputs {
  display: flex;
 }
 .hero {
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.2rem;
  margin-bottom: 1rem;
 }
 h1,
 h2,
 h3,
 p {
  margin-top: 0;
 }
 h1 {
  margin-bottom: 0.35rem;
  font-size: clamp(1.85rem, 4vw, 3rem);
 }
 h2 {
  margin-bottom: 0;
  font-size: 1.16rem;
 }
 .hero > div > p:last-child {
  max-width: 52rem;
  margin-bottom: 0;
  color: var(--ink-muted);
 }
 .eyebrow {
  margin-bottom: 0.28rem;
  color: var(--accent-dark);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
 }
 .privacy-pill,
 .count-pill {
  flex: none;
  border: 1px solid color-mix(in srgb, var(--success) 48%, var(--line));
  border-radius: 999px;
  padding: 0.48rem 0.72rem;
  color: var(--success);
  font-size: 0.8rem;
  font-weight: 800;
 }
 .panel {
  margin-bottom: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  box-shadow: 0 0.45rem 1.4rem color-mix(in srgb, #151126 7%, transparent);
  padding: 1rem;
 }
 .panel-heading {
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
 }
 .panel-heading p {
  margin: 0.2rem 0 0;
  color: var(--ink-muted);
  font-size: 0.88rem;
 }
 .file-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  white-space: nowrap;
 }
 .file-button input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
 }
 .source-grid,
 .option-grid {
  align-items: end;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 0.72rem;
 }
 .source-grid label,
 .option-grid label,
 .panel-heading label {
  display: grid;
  gap: 0.28rem;
  min-width: 10rem;
  color: var(--ink-muted);
  font-size: 0.8rem;
  font-weight: 750;
 }
 .source-grid label {
  flex: 1 1 14rem;
 }
 .option-grid label {
  flex: 1 1 10rem;
 }
 .primary-button {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
 }
 :root[data-toolbox-theme="dark"] .primary-button {
  color: #17131f;
 }
 .tabs {
  gap: 0.35rem;
  overflow-x: auto;
  margin: 0 0 0.85rem;
  padding: 0.1rem 0;
 }
 .tabs button {
  white-space: nowrap;
 }
 .tabs button[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--surface-muted);
  color: var(--accent-dark);
 }
 .workspace-grid {
  align-items: stretch;
  gap: 0.85rem;
 }
 .workspace-grid > * {
  min-width: 0;
  flex: 1 1 0;
 }
 .table-scroll {
  max-width: 100%;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
 }
 .table-scroll:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 36%, transparent);
 }
 table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
 }
 th,
 td {
  border-bottom: 1px solid var(--line);
  padding: 0.55rem;
  text-align: left;
  vertical-align: top;
 }
 thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface-muted);
  white-space: nowrap;
 }
 tbody tr:last-child > * {
  border-bottom: 0;
 }
 .field-table {
  min-width: 70rem;
 }
 .field-table input,
 .field-table select {
  min-width: 8rem;
 }
 .flag-cell label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
 }
 .flag-cell label + label {
  margin-top: 0.4rem;
 }
 .flag-cell input {
  width: auto;
  min-height: 0;
 }
 .range-inputs {
  gap: 0.35rem;
 }
 .range-inputs input {
  min-width: 6rem;
 }
 .icon-button {
  min-height: 2.3rem;
  padding: 0.4rem 0.62rem;
  font-size: 0.78rem;
 }
 .danger {
  color: var(--danger);
 }
 .records {
  max-height: 42rem;
 }
 .records td {
  max-width: 18rem;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
 }
 .export-panel textarea {
  min-height: 30rem;
 }
 .violation-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
 }
 .violation-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  border: 1px solid color-mix(in srgb, var(--danger) 38%, var(--line));
  border-radius: 0.7rem;
  padding: 0.58rem;
 }
 .violation-list strong {
  color: var(--danger);
  font-size: 0.78rem;
 }
 .warning,
 .error,
 .success,
 .empty {
  margin: 0.65rem 0 0;
  font-size: 0.88rem;
 }
 .warning {
  color: var(--warning);
 }
 .error {
  border: 1px solid color-mix(in srgb, var(--danger) 45%, var(--line));
  border-radius: 0.72rem;
  background: color-mix(in srgb, var(--danger) 8%, var(--surface));
  padding: 0.66rem;
  color: var(--danger);
 }
 .success {
  color: var(--success);
 }
 .empty {
  color: var(--ink-muted);
 }
 .top-gap {
  margin-top: 0.75rem;
 }
 .preset-row,
 .action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
 }
 .preset-row {
  margin-bottom: 0.85rem;
 }
 .work-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.82fr);
  align-items: start;
  gap: 0.85rem;
 }
 .work-grid > * {
  min-width: 0;
 }
 .input-panel > label,
 .predicate-panel > label,
 .compact-grid label {
  display: grid;
  gap: 0.3rem;
  margin-bottom: 0.7rem;
  color: var(--ink-muted);
  font-size: 0.8rem;
  font-weight: 750;
 }
 .input-panel > label:first-of-type {
  max-width: 15rem;
 }
 .compact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(6rem, 0.32fr);
  gap: 0.55rem;
 }
 .compact-grid label:first-child:last-child,
 .compact-grid label:nth-child(3) {
  grid-column: 1 / -1;
 }
 .check-row {
  display: flex !important;
  grid-template-columns: auto 1fr;
  align-items: center;
  flex-direction: row;
 }
 .check-row input {
  width: auto;
  min-height: 0;
 }
 .limits {
  margin-top: 0.85rem;
 }
 .running {
  margin: 0.75rem 0 0;
  color: var(--accent-dark);
  font-weight: 750;
 }
 .result-panel textarea {
  min-height: 18rem;
 }
 .step-list {
  max-height: 18rem;
  overflow: auto;
  padding-left: 1.5rem;
  color: var(--ink-muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.8rem;
 }
 .selection-grid,
 .explorer-grid,
 .lab-grid {
  display: grid;
  gap: 0.75rem;
 }
 .selection-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 0.85rem;
 }
 .selection-grid label,
 .lab-grid label {
  display: grid;
  gap: 0.3rem;
  color: var(--ink-muted);
  font-size: 0.8rem;
  font-weight: 750;
 }
 .explorer-grid {
  grid-template-columns: minmax(0, 1.45fr) minmax(15rem, 0.55fr);
  align-items: center;
  margin-bottom: 0.9rem;
 }
 .format-graph {
  width: 100%;
  max-height: 24rem;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
  background: var(--surface-muted);
 }
 .format-graph line {
  stroke: color-mix(in srgb, var(--ink-muted) 52%, transparent);
  stroke-width: 1.3;
 }
 .format-graph marker path {
  fill: var(--ink-muted);
 }
 .format-graph circle {
  fill: var(--surface);
  stroke: var(--line);
  stroke-width: 2;
 }
 .format-graph text {
  fill: currentColor;
  font-size: 14px;
  font-weight: 800;
 }
 .format-graph .source-node circle {
  fill: color-mix(in srgb, var(--accent) 14%, var(--surface));
  stroke: var(--accent);
  stroke-width: 4;
 }
 .format-graph .target-node circle {
  stroke: var(--success);
  stroke-width: 4;
 }
 .property-list {
  display: grid;
  gap: 0.42rem;
 }
 .property-list label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.86rem;
 }
 .property-list input {
  width: auto;
  min-height: 0;
 }
 .route-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
  gap: 0.6rem;
  margin-bottom: 0.8rem;
 }
 .route-card {
  display: grid;
  align-content: start;
  gap: 0.38rem;
  min-width: 0;
  text-align: left;
 }
 .route-card[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--surface-muted);
  box-shadow: inset 0 0 0 1px var(--accent);
 }
 .route-card > span:not(.route-statuses) {
  color: var(--ink-muted);
  font-size: 0.78rem;
 }
 .route-statuses {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
 }
 .route-statuses small,
 .status {
  border-radius: 999px;
  padding: 0.22rem 0.42rem;
  font-size: 0.7rem;
  font-weight: 750;
 }
 .expected-preserved,
 .measured-preserved {
  background: color-mix(in srgb, var(--success) 13%, var(--surface));
  color: var(--success);
 }
 .conditional,
 .not-tested {
  background: color-mix(in srgb, var(--warning) 13%, var(--surface));
  color: var(--warning);
 }
 .expected-lost,
 .measured-changed {
  background: color-mix(in srgb, var(--danger) 13%, var(--surface));
  color: var(--danger);
 }
 .unknown {
  background: var(--surface-muted);
  color: var(--ink-muted);
 }
 .lab-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  margin-bottom: 1rem;
 }
 .lab-grid textarea {
  min-height: 25rem;
 }
 .evidence-table {
  margin-top: 0.8rem;
 }
 .notice-list {
  margin: 0.8rem 0 0;
  padding-left: 1.3rem;
  color: var(--warning);
  font-size: 0.84rem;
 }
 details {
  margin-top: 0.7rem;
 }
 summary {
  cursor: pointer;
  font-weight: 750;
 }
 .loading,
 .fatal {
  width: min(100%, 90rem);
  margin: 2rem auto;
  padding: 1rem;
 }
 .help-dialog {
  width: min(38rem, calc(100vw - 2rem));
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: var(--surface);
  color: inherit;
  padding: 1rem;
 }
 .help-dialog::backdrop {
  background: rgb(16 14 25 / 58%);
 }
 .dialog-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
 }
@media (max-width: 860px) {
  .hero,
  .workspace-grid {
    flex-direction: column;
  }
  .privacy-pill {
    align-self: flex-start;
  }
  .workspace-grid > * {
    width: 100%;
  }
  .panel-heading {
    align-items: flex-start;
    flex-wrap: wrap;
  }
  .work-grid {
    grid-template-columns: 1fr;
  }
  .selection-grid,
  .explorer-grid,
  .lab-grid {
    grid-template-columns: 1fr;
  }
 }
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
 }
@@ -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 +1,48 @@
 {
  "$schema": "https://git.add-ideas.de/lotobo/toolbox-sdk/raw/branch/main/schemas/toolbox-app.v1.schema.json",
  "schemaVersion": 1,
  "id": "de.add-ideas.format-lab",
  "name": "Format Lab",
  "version": "0.1.0",
  "description": "Explore conversion paths and measure information loss locally.",
  "entry": "./",
  "icon": "./favicon.svg",
  "categories": ["data", "developer", "media"],
  "tags": [
    "conversion",
    "round-trip",
    "information-loss",
    "formats",
    "csv",
    "json"
  ],
  "integration": {
    "contextVersion": 1,
    "launchModes": ["navigate", "new-tab"],
    "embedding": "unsupported"
  },
  "requirements": {
    "secureContext": false,
    "workers": false,
    "indexedDb": false,
    "crossOriginIsolated": false,
    "topLevelContext": false
  },
  "privacy": {
    "processing": "local",
    "fileUploads": true,
    "telemetry": false,
    "label": "Inputs and conversion evidence stay in this browser; nothing is uploaded."
  },
  "source": {
    "repository": "https://git.add-ideas.de/lotobo/format-lab",
    "license": "GPL-3.0-or-later"
  },
  "actions": [
    {
      "id": "source",
      "label": "Source",
      "url": "https://git.add-ideas.de/lotobo/format-lab"
    }
  ]
 }
@@ -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 +1,124 @@
 import { expect, test, type Page } from "@playwright/test";
 const ORIGIN = "http://127.0.0.1:4201";
 async function watchLocalOnly(page: Page) {
  const external: string[] = [];
  await page.route("**/*", async (route) => {
    const url = new URL(route.request().url());
    if (url.origin !== ORIGIN) {
      external.push(url.href);
      await route.abort();
    } else await route.continue();
  });
  return external;
 }
 test("explores a real directed format graph at a nested path", async ({
  page,
 }) => {
  await page.setViewportSize({ width: 1800, height: 1000 });
  const external = await watchLocalOnly(page);
  await page.goto("/deep/nested/format-lab/");
  await expect(page.getByRole("heading", { name: "Format Lab" })).toBeVisible();
  await page.getByLabel("Domain").selectOption("image");
  await expect(
    page.getByRole("img", {
      name: /Images conversion graph from PNG to JPEG/u,
    }),
  ).toBeVisible();
  await expect(
    page.getByText(/This v0.1 lab exposes catalog contracts for Images/u),
  ).toBeVisible();
  expect(external).toEqual([]);
  expect(
    await page
      .locator(".toolbox-shell__main")
      .evaluate((node) => getComputedStyle(node).width),
  ).toBe("1440px");
 });
 test("measures a typed XML round trip and downloads both outputs", async ({
  page,
 }) => {
  await page.goto("/deep/nested/format-lab/");
  await page.getByLabel("To format").selectOption("xml");
  await page.getByRole("button", { name: /^JSON → XML/u }).click();
  await page.getByRole("button", { name: "Run selected round trip" }).click();
  const output = page.getByRole("textbox", {
    name: "Conversion output",
    exact: true,
  });
  await expect(output).toContainText(
    '<field name="active" type="boolean">true',
  );
  await expect(
    page.getByRole("row", { name: /Nested values.*measured preserved/u }),
  ).toBeVisible();
  const targetDownload = page.waitForEvent("download");
  await page.getByRole("button", { name: "Download target" }).click();
  expect((await targetDownload).suggestedFilename()).toBe("converted.xml");
  const reportDownload = page.waitForEvent("download");
  await page.getByRole("button", { name: "Download evidence report" }).click();
  expect((await reportDownload).suggestedFilename()).toBe(
    "format-lab-report.json",
  );
 });
 test("shows CSV losses and retains evidence after invalid source", async ({
  page,
 }) => {
  await page.goto("/deep/nested/format-lab/");
  await expect(
    page.getByRole("row", { name: /Scalar types.*measured changed/u }),
  ).toBeVisible();
  const output = page.getByRole("textbox", {
    name: "Conversion output",
    exact: true,
  });
  const previous = await output.inputValue();
  await page.getByLabel("Source data").fill("[");
  await page.getByRole("button", { name: "Run selected round trip" }).click();
  await expect(page.getByRole("alert")).toContainText("retained");
  await expect(output).toHaveValue(previous);
 });
 test("integrates help, themes, identity, headers and offline reload", async ({
  page,
  request,
  context,
 }) => {
  await page.goto("/deep/nested/format-lab/");
  await page.getByRole("button", { name: "Help" }).click();
  await expect(
    page.getByRole("dialog", { name: "About Format Lab" }),
  ).toContainText("lossless claim");
  await page.keyboard.press("Escape");
  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);
  const index = await request.get("/deep/nested/format-lab/");
  expect(index.headers()["content-security-policy"]).toContain(
    "connect-src 'self'",
  );
  expect(await index.text()).not.toMatch(/\b(?:src|href)=["']\//u);
  const manifest = await request.get(
    "/deep/nested/format-lab/toolbox-app.json",
  );
  await expect(manifest.json()).resolves.toMatchObject({
    id: "de.add-ideas.format-lab",
    version: "0.1.0",
    privacy: { processing: "local", telemetry: false },
  });
  await context.setOffline(true);
  await page.reload();
  await expect(page.getByRole("heading", { name: "Format Lab" })).toBeVisible();
 });
@@ -0,0 +1,36 @@
 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("Format Lab workbench", () => {
  it("shows catalog expectations beside initial measured changes", () => {
    render(<Workbench />);
    expect(
      screen.getByRole("heading", { name: "Format Lab" }),
    ).toBeInTheDocument();
    expect(screen.getAllByText("measured changed").length).toBeGreaterThan(0);
    expect(
      screen.getByRole("row", { name: /Document metadata.*not tested/iu }),
    ).toBeInTheDocument();
  });
  it("retains evidence after malformed input and disables unsupported execution", async () => {
    const user = userEvent.setup();
    render(<Workbench />);
    const previous = (
      screen.getByLabelText("Conversion output") as HTMLTextAreaElement
    ).value;
    await user.clear(screen.getByLabelText("Source data"));
    await user.type(screen.getByLabelText("Source data"), "[[");
    await user.click(
      screen.getByRole("button", { name: "Run selected round trip" }),
    );
    expect(screen.getByRole("alert")).toHaveTextContent(/retained/u);
    expect(screen.getByLabelText("Conversion output")).toHaveValue(previous);
    await user.selectOptions(screen.getByLabelText("Domain"), "image");
    expect(
      screen.getByRole("button", { name: "Run selected round trip" }),
    ).toBeDisabled();
  });
 });
@@ -0,0 +1,45 @@
 import { describe, expect, it } from "vitest";
 import { findRoutes, properties } from "../../src/lab/catalog";
 describe("format catalog", () => {
  it("prefers the lower-loss route for selected properties", () => {
    const routes = findRoutes("data", "json", "xml", [
      "scalar-types",
      "nested",
      "nulls",
    ]);
    expect(routes[0]?.formats).toEqual(["json", "xml"]);
    expect(routes[0]?.summary).toMatchObject({
      "scalar-types": "expected-preserved",
      nested: "expected-preserved",
    });
    expect(
      routes.find((route) => route.formats.includes("csv"))?.score,
    ).toBeGreaterThan(routes[0]!.score);
  });
  it("enumerates bounded acyclic routes and identity evidence", () => {
    const routes = findRoutes(
      "subtitle",
      "ass",
      "srt",
      properties.subtitle.map((item) => item.id),
    );
    expect(routes.length).toBeGreaterThan(0);
    expect(
      routes.every(
        (route) =>
          route.edges.length <= 4 &&
          new Set(route.formats).size === route.formats.length,
      ),
    ).toBe(true);
    expect(findRoutes("image", "png", "png", ["pixels"])[0]).toMatchObject({
      formats: ["png"],
      score: 0,
    });
  });
  it("does not invent paths between incompatible audio and video families", () => {
    expect(findRoutes("av", "wav", "mp4", ["audio"])).toEqual([]);
  });
 });
@@ -0,0 +1,77 @@
 import { describe, expect, it } from "vitest";
 import { findRoutes, properties } from "../../src/lab/catalog";
 import { parseData, runRoundTrip, serializeData } from "../../src/lab/data";
 const all = properties.data.map((property) => property.id);
 const sample = JSON.stringify([
  {
    id: 1,
    active: true,
    nullable: null,
    nested: { score: 1.25 },
    text: "Café 🚲",
  },
 ]);
 describe("structured data lab", () => {
  it("measures typed XML round trips without claiming metadata", () => {
    const route = findRoutes("data", "json", "xml", all)[0]!;
    const result = runRoundTrip(sample, route);
    expect(result.targetText).toContain(
      '<field name="active" type="boolean">true',
    );
    expect(
      result.measurements.filter(
        (measurement) => measurement.status === "measured-changed",
      ),
    ).toEqual([]);
    expect(result.measurements.at(-1)).toMatchObject({
      property: "metadata",
      status: "not-tested",
    });
  });
  it("exposes CSV type, null and nested-value changes", () => {
    const route = findRoutes("data", "json", "csv", all)[0]!;
    const result = runRoundTrip(sample, route);
    const changed = result.measurements
      .filter((measurement) => measurement.status === "measured-changed")
      .map((measurement) => measurement.property);
    expect(changed).toEqual(
      expect.arrayContaining(["scalar-types", "nulls", "nested", "numbers"]),
    );
    expect(result.notes.join(" ")).toContain("CSV cells");
  });
  it("neutralizes spreadsheet formulas and keeps the change measurable", () => {
    const document = parseData('[{"value":" =2+2"}]', "json");
    const csv = serializeData(document, "csv");
    expect(csv).toContain("' =2+2");
    const route = findRoutes("data", "json", "csv", all)[0]!;
    expect(
      runRoundTrip('[{"value":" =2+2"}]', route).measurements.find(
        (measurement) => measurement.property === "unicode",
      ),
    ).toMatchObject({ status: "measured-changed" });
  });
  it("imports generic XML honestly and rejects active or dangerous input", () => {
    const generic = parseData(
      "<records><row><id>1</id><name>Ada</name></row></records>",
      "xml",
    );
    expect(generic.rows).toEqual([{ id: "1", name: "Ada" }]);
    expect(generic.notes.join(" ")).toMatch(/string fields/u);
    expect(() =>
      parseData('<!DOCTYPE x [<!ENTITY e "x">]><records/>', "xml"),
    ).toThrow(/DOCTYPE/u);
    expect(() => parseData("__proto__,name\nvalue,Ada", "csv")).toThrow(
      /Dangerous/u,
    );
  });
  it("rejects duplicate headings and non-record JSON", () => {
    expect(() => parseData("id,id\n1,2", "csv")).toThrow(/unique/u);
    expect(() => parseData("[1,2]", "json")).toThrow(/Record 1/u);
  });
 });
@@ -0,0 +1,27 @@
 {
  "compilerOptions": {
    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
    "target": "ES2023",
    "lib": ["ES2023", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "types": ["vite/client"],
    "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`

							Run `npm ci`, `npm run check`, and `npm run test:browser` before proposing a change. Keep processing local, preserve explicit limits, and include fixtures for every parser boundary.
		`@@ -0,0 +1,3 @@`
							`# Licences`

							The application is GPL-3.0-or-later. Generated release artifacts include an exact runtime dependency licence inventory in `npm-runtime-licenses.txt`.
		`@@ -0,0 +1,3 @@`
							`# Security`

							`Please report vulnerabilities privately to the repository owner. Do not attach sensitive source files to public issues. Imported inputs are untrusted; parsers must remain bounded and must not execute active content or fetch external resources.`
		`@@ -0,0 +1 @@`
							`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64" role="img" aria-label="Format Lab"><path fill="#5b4ec4" d="M11 4h30l12 12v44H11z"/><path fill="#fff" opacity=".28" d="M41 4v14h12"/><circle cx="21" cy="31" r="5" fill="#fff"/><circle cx="42" cy="27" r="5" fill="#fff"/><circle cx="37" cy="46" r="5" fill="#fff"/><path d="M25 30l12-2m3 4l-2 9m-5 2l-9-8" fill="none" stroke="#fff" stroke-width="4"/></svg>`