docs(provenance): clarify approved Classic reuse

AGENTS.md

@@ -2,9 +2,10 @@
 
 ## Ownership and architecture
 
-- This repository solely owns atrinik.org: the clean-room MIT Astro/TypeScript
-  site, public content, deployment configuration, and recovery docs. Keep it
-  independently buildable/deployable; the wrapper never owns Astro source.
+- This repository solely owns atrinik.org: the evidence-gated MIT
+  Astro/TypeScript site, public content, deployment configuration, and recovery
+  docs. Keep it independently buildable/deployable; the wrapper never owns
+  Astro source.
 - Use static Astro output, semantic HTML/CSS/Markdown, and structured data with
   no repository-authored browser JavaScript under the current contract.
   Introducing browser JavaScript requires an issue defining its necessity,
@@ -52,10 +53,20 @@
   path, immutable Git blob object ID and digest, published digest and binary
   dimensions, author, license, transformation, attribution, and accessible
   alternative text/role. Validation rejects unproven or uncatalogued media.
-- Historical reuse follows local `PROVENANCE.md` and canonical
-  `atrinik/atrinik/docs/PROVENANCE.md`, failing closed on incomplete/mixed
-  evidence. Do not republish archived personal data without a separate privacy
-  and provenance decision.
+- Independent implementation is the default where exact reuse is not proven.
+  Historical Classic destination reuse follows the
+  [local provenance record](PROVENANCE.md) and
+  [canonical grant registry](https://github.com/atrinik/atrinik/blob/main/docs/PROVENANCE.md).
+  At an exact source revision, prove every copyrightable portion is separable,
+  within a recorded grant's past-contribution scope, and original work solely
+  authored by its grantor. Present-day blame, majority authorship, a later
+  edit, or an agent-assisted commit cannot fill a coverage gap. Admitted
+  material may be inspected as implementation reference, copied, adapted,
+  ported, translated, and MIT-relicensed in this destination. Record the exact
+  source, destination, transformation, and registry revision; uncovered
+  material fails closed. The Classic repository remains GPL-distributed. Do not
+  republish archived personal data without a separate privacy and provenance
+  decision.
 - Do not put secrets in source, static output, browser code, logs, fixtures,
   preview metadata, or `PUBLIC_` values. Protected environments use least
   privilege. Omit repository-managed analytics, tracking, cookies, ads, and

CONTRIBUTING.md

@@ -1,9 +1,18 @@
 # Contributing
 
-Contributions are MIT-licensed and independently implemented. Do not copy or
-adapt classic/GPL website code, prose, themes, tests, or media. Record the
-public design source for material behavior and follow `PROVENANCE.md` for any
-candidate historical reuse.
+Contributions are MIT-licensed. Independent implementation is the default where
+exact reuse is not proven. Exact historical Classic material may be inspected
+or reused only when the [local provenance record](PROVENANCE.md) and
+[canonical grant registry](https://github.com/atrinik/atrinik/blob/main/docs/PROVENANCE.md)
+admit every copyrightable portion at an exact source revision. Complete
+rename-aware history must prove each portion is original past work solely
+authored by its grantor; present-day blame, majority authorship, later edits,
+and agent-assisted commits are insufficient. An admitted destination may copy,
+adapt, port, translate, and MIT-relicense that material, but must not depend on
+the GPL Classic source. The destination grant does not change the Classic
+repository's GPL distribution. Record the exact evidence and exclude every
+uncovered portion. Media also requires its own exact cataloged provenance,
+authorship, license, and transformation.
 
 Every media change updates `src/data/media.json` with its exact locally retained
 source, Git blob object ID, source and published digests, published dimensions,

PROVENANCE.md

@@ -1,9 +1,9 @@
 # Provenance
 
 All website source, prose, styles, schemas, tests, and fixtures introduced by
-this repository are new MIT-licensed work written for the clean-room
-replacement. They use public issue requirements, public platform
-documentation, and generic interoperability facts.
+this repository are new MIT-licensed work written for the replacement. They use
+public issue requirements, public platform documentation, and generic
+interoperability facts.
 
 The exact public Internet Archive snapshot of atrinik.org at
 <https://web.archive.org/web/20160307051707/https://www.atrinik.org/> was
@@ -35,7 +35,21 @@ data. They do not name or contain a real release or asset and are never
 published by Astro. `src/data/downloads.json` remains empty until exact
 externally owned evidence is reviewed.
 
-Future reuse under an approved historical grant must follow the exhaustive
-registry and proof requirements in `atrinik/atrinik` and record the exact root
-registry revision. This file does not maintain a grantor list or imply a
-blanket grant.
+Independent implementation is the default where exact reuse is not proven.
+Before Classic source is inspected as implementation reference or reused, the
+[canonical grant registry](https://github.com/atrinik/atrinik/blob/main/docs/PROVENANCE.md)
+requires an exact source revision and a complete, non-shallow, rename-aware
+audit. Every copyrightable portion of the selected separable material must fall
+within a grant's recorded past-contribution scope and be original work solely
+authored by that grantor. Present-day blame, majority authorship, a later edit,
+or an agent-assisted commit cannot establish missing historical coverage; the
+audit must also exclude copied, generated, vendored, embedded third-party, and
+conflicting-licensed origins.
+
+Only admitted material may be inspected as implementation reference, copied,
+adapted, ported, translated, and MIT-relicensed in this destination. Record the
+exact source, destination, transformation, third-party review, grantor, and
+canonical registry revision. Every uncovered portion is excluded. The
+destination grant neither changes the Classic repository's GPL distribution nor
+authorizes using its GPL source as a website build/runtime dependency. The
+canonical registry remains authoritative; this policy implies no blanket grant.

README.md

@@ -30,9 +30,14 @@ human-developed beginning alongside the wider Atrinik Development Team. The
 maintained GPL C Classic line credits Atrinik, Daimonin, Crossfire, and wider
 upstream/community contributors through its authoritative records; 2011 was a
 major development and release era, not the founding year. The new Go server,
-Rust client/editor/renderer/toolkit, and Protobuf protocol are a Codex-driven
-clean-room reimplementation and improvement, not a mechanical source port and
-not yet a complete game release.
+Rust client/editor/renderer/toolkit, and Protobuf protocol are Codex-driven MIT
+replacement foundations governed by evidence-gated provenance. Independent
+implementation is the default where exact reuse is unproven. Exact historical
+reuse follows the [local record](PROVENANCE.md) and
+[canonical grant registry](https://github.com/atrinik/atrinik/blob/main/docs/PROVENANCE.md);
+admitted destination material may be MIT-relicensed, while the Classic
+repository remains GPL-distributed. The foundations are not yet a complete game
+release.
 Follow the [replacement roadmap](https://github.com/atrinik/atrinik/issues/168)
 for current readiness.
 

src/pages/about.astro

@@ -83,7 +83,7 @@ const metadata = indexablePage({
   <section class="section" aria-labelledby="two-paths-heading">
     <div class="section-heading">
       <p class="eyebrow">Two paths through the same world</p>
-      <h2 id="two-paths-heading">Playable history and a clean-room future</h2>
+      <h2 id="two-paths-heading">Playable history and an MIT future</h2>
       <p>
         The two lines share a project and a setting, but they are separate
         implementations with different licenses and release readiness.
@@ -127,14 +127,19 @@ const metadata = indexablePage({
         </div>
         <h3>Next generation</h3>
         <p>
-          The replacement is a Codex-driven clean-room reimplementation and
+          The replacement is a Codex-driven MIT reimplementation and
           improvement: a Go server, Rust client, editor, renderer and content
-          toolkit, plus a new Protobuf protocol. These fresh MIT foundations are
-          not a mechanical source port and do not yet form a complete game
-          release or replace the playable Classic line.
+          toolkit, plus a new Protobuf protocol. Its repositories use
+          evidence-gated provenance: independent implementation is the default,
+          while an exact, separable historical Classic contribution may be
+          reused at an MIT destination only when a complete-history audit proves
+          it fits one applicable grant's past-contribution and sole-authorship
+          scope. The Classic repository remains GPL-distributed. These
+          foundations do not yet form a complete game release or replace the
+          playable Classic line.
         </p>
         <ul class="path-details">
-          <li>Clean-room Go and Rust implementation</li>
+          <li>MIT Go and Rust implementation</li>
           <li>MIT-licensed software</li>
           <li>Not yet available as a complete game</li>
         </ul>
@@ -184,8 +189,8 @@ const metadata = indexablePage({
         <h3>Human code is welcome</h3>
         <p>
           People can contribute code directly. Human-written and agent-written
-          changes pass the same review, clean-room provenance, licensing, and
-          validation gates; contributors do not need to use an agent.
+          changes pass the same review, evidence-gated provenance, licensing,
+          and validation gates; contributors do not need to use an agent.
         </p>
       </article>
     </div>

src/pages/downloads.astro

@@ -66,12 +66,13 @@ const metadata = indexablePage({
         </div>
         <h3>Next generation</h3>
         <p>
-          The independently released, clean-room MIT Go and Rust repositories
-          provide foundations in development. They do not yet make up a complete
-          game, so no next-generation download is offered here.
+          The independently released MIT Go and Rust repositories use
+          evidence-gated provenance and provide foundations in development. They
+          do not yet make up a complete game, so no next-generation download is
+          offered here.
         </p>
         <ul class="path-details">
-          <li>Clean-room foundation repositories</li>
+          <li>Evidence-gated foundation repositories</li>
           <li>MIT-licensed software</li>
           <li>No public download</li>
         </ul>

src/pages/index.astro

@@ -28,7 +28,7 @@ const chronicle = [
     media: getMedia("atrinik-now"),
     number: "II",
     title: "The world stirs again",
-    text: "Today, Classic remains the playable home while new foundations are built independently, tested openly, and joined with care.",
+    text: "Today, Classic remains the playable home while new foundations are built with evidence-gated provenance, tested openly, and joined with care.",
   },
   {
     media: getMedia("atrinik-beyond"),
@@ -162,8 +162,9 @@ const chronicle = [
       </div>
       <p>
         Classic keeps the world playable today. The next-generation effort is
-        building a clean-room foundation for tomorrow. They are distinct
-        implementations with clear licenses and compatibility boundaries.
+        building MIT foundations with evidence-gated provenance for tomorrow.
+        They are distinct implementations with clear licenses and compatibility
+        boundaries.
       </p>
     </div>
     <div class="path-grid">
@@ -204,7 +205,7 @@ const chronicle = [
           independently released repositories.
         </p>
         <ul class="path-details">
-          <li>Clean-room implementation</li>
+          <li>MIT implementation with evidence-gated provenance</li>
           <li>Independent, testable components</li>
           <li>Not yet available as a complete game</li>
         </ul>
@@ -274,8 +275,8 @@ const chronicle = [
           Atrinik's software is developed in public, primarily through
           Codex-driven agentic workflows. Direct human code contributions are
           welcome under the same review, provenance, licensing, and validation
-          gates. Classic has one coordinated home; clean-room replacement
-          foundations live in focused repositories.
+          gates. Classic has one coordinated home; provenance-reviewed MIT
+          replacement foundations live in focused repositories.
         </p>
         <a
           class="button button--primary"

src/pages/licenses.astro

@@ -109,9 +109,16 @@ const metadata = indexablePage({
         <p><span class="status-tag">MIT</span></p>
         <h3>Next-generation software</h3>
         <p>
-          The independently released clean-room Go and Rust replacement
-          foundations are MIT licensed. They remain separate from Classic and do
-          not yet form a complete public download.
+          The independently released Go and Rust replacement foundations are MIT
+          licensed and use evidence-gated provenance. Independent implementation
+          is the default where exact reuse is unproven. Exact, separable
+          historical contribution can be MIT-relicensed at a destination only
+          when a complete-history audit proves it fits one applicable approved
+          historical grant's past-contribution and sole-authorship scope.
+          Distinct contributions may cite different grants, but grants cannot be
+          combined for joint or inseparable work. That never changes the GPL
+          terms of the Classic source repository. The foundations remain
+          separate from Classic and do not yet form a complete public download.
         </p>
         <a
           class="link-arrow"