feat: add source-led Copywriter plugin

.agents/plugins/marketplace.json

@@ -75,6 +75,12 @@
         "authentication": "ON_INSTALL"
       },
       "category": "Developer Tools"
+    },
+    {
+      "name": "copywriter",
+      "source": {"source": "local", "path": "./plugins/copywriter"},
+      "policy": {"installation": "AVAILABLE", "authentication": "ON_INSTALL"},
+      "category": "Productivity"
     }
   ]
 }

.claude-plugin/marketplace.json

@@ -16,6 +16,10 @@
     {
       "name": "agent-doctor",
       "source": "./plugins/agent-doctor"
+    },
+    {
+      "name": "copywriter",
+      "source": "./plugins/copywriter"
     }
   ]
 }

.github/workflows/validate.yml

@@ -75,8 +75,8 @@ jobs:
         with:
           node-version: "24"
 
-      - name: Install Papercuts build dependencies
-        if: matrix.plugin == 'papercuts'
+      - name: Install plugin build dependencies
+        if: matrix.plugin == 'papercuts' || matrix.plugin == 'copywriter'
         run: npm ci --ignore-scripts --no-audit --no-fund
 
       - name: Validate plugin

.gitignore

@@ -2,3 +2,4 @@
 .worktrees/
 node_modules/
 docs/superpowers/
+copywriter-output/

README.md

@@ -70,6 +70,10 @@ Claude:
 /plugin install read-the-room@rokk-club-claude-plugins
 ```
 
+#### copywriter ![Codex](assets/agent-badges/codex.svg) ![Claude Code](assets/agent-badges/claude-code.svg)
+
+Transform substantive source material into grounded taglines, READMEs, local landing pages, editable pitch decks, and illustrated articles. See [usage and capability requirements](plugins/copywriter/README.md) and the [tested compatibility record](plugins/copywriter/packaging/compatibility.md).
+
 ### Ports
 
 #### eli5 ![Codex](assets/agent-badges/codex.svg)

plugins/copywriter/.claude-plugin/plugin.json

@@ -0,0 +1,5 @@
+{
+  "name": "copywriter",
+  "version": "0.1.0",
+  "description": "Transform source material into grounded product copy, articles, and illustrated pitch decks."
+}

plugins/copywriter/.codex-plugin/plugin.json

@@ -0,0 +1,16 @@
+{
+  "name": "copywriter",
+  "version": "0.1.0",
+  "description": "Transform source material into grounded product copy, articles, and illustrated pitch decks.",
+  "skills": "./skills/",
+  "author": {"name": "Rokk Club"},
+  "interface": {
+    "displayName": "Copywriter",
+    "shortDescription": "Turn source material into grounded product writing",
+    "longDescription": "Create taglines, READMEs, local landing pages, editable pitch decks, and articles from substantive source material.",
+    "developerName": "Rokk Club",
+    "category": "Productivity",
+    "capabilities": ["Read", "Write"],
+    "defaultPrompt": ["Use Copywriter to create a README for this package."]
+  }
+}

plugins/copywriter/CHANGELOG.md

@@ -0,0 +1,5 @@
+# Changelog
+
+## 0.1.0
+
+Initial implementation: source-led writing skills, local page and editable deck generation, and separate portable, Codex, and Claude release packages. See the compatibility record for checks performed and remaining release gates.

plugins/copywriter/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Rokk Club
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

plugins/copywriter/README.md

@@ -0,0 +1,47 @@
+# Copywriter
+
+Transform verified product material into taglines, READMEs, landing pages, editable pitch decks, and illustrated articles. Articles require your draft, outline, or substantive notes; a topic alone is insufficient.
+
+Ask your agent: “Use Copywriter to create a README for this package.” Other examples:
+
+- “Use Copywriter to rewrite these article notes, preserving the uncertainty, with a lead illustration.”
+- “Use Copywriter to make an adopter pitch deck from this repository.”
+- “Use Copywriter to draft a landing page with a local HTML preview.”
+- “Use Copywriter to build a product brief without channel copy.”
+
+The six skills are `write` (router, brief, research), `tagline`, `readme`, `landing-page`, `pitch-deck`, and `article`. Claude Code documents namespaced invocation such as `/copywriter:readme` and `/copywriter:write brief`. Codex picker syntax has not yet been verified; use natural language. These are agent requests, not shell commands.
+
+## Installation and capabilities
+
+The source uses one shared skill tree with portable, Codex, and Claude manifests. Release directories contain exactly one target manifest. See [compatibility and release checks](packaging/compatibility.md) before treating any host as supported.
+
+Text tasks use the agent's file tools without a runtime dependency. Local HTML and PowerPoint generation require Node.js 24 or later; the PowerPoint dependency is bundled. Browsing, image generation, and image inspection use capabilities supplied by the host. Copywriter does not install or configure integrations. Office rendering is optional at installation but necessary for a verified deck preview; missing capabilities produce an explicit partial result.
+
+Output defaults to a new `copywriter-output/<run-id>/` in the authorized workspace. Direct requests to edit an existing README authorize that edit. Publishing, deployment, repository metadata changes, and sending artifacts require authorization for those actions. Private briefs, claims, and review notes stay out of public exports.
+
+## Local generators
+
+The skills prepare and verify the inputs. Run these commands from the authorized output workspace, replacing the paths with real files and **new** output directories:
+
+```sh
+node /path/to/copywriter/scripts/render-page.js page.json page-output
+node /path/to/copywriter/scripts/render-deck.js slides.json deck-output
+```
+
+The [landing-page guide](skills/landing-page/SKILL.md) describes the plain-text page model. The [deck guide](skills/pitch-deck/references/decks.md) describes slides, notes, assets, and chart data. Generators never establish claim truth or visual quality by themselves. Review their stage reports and inspect the rendered artifacts.
+
+## Contributor checks and packaging
+
+From this plugin directory in the **source checkout** (contributor files are omitted from installed releases):
+
+```sh
+npm ci --ignore-scripts --no-audit --no-fund
+node scripts/build.js
+node scripts/test.js
+node scripts/validate.js
+node scripts/package.js /existing/parent/new-release-directory
+```
+
+Packaging copies shared files into `copywriter-portable/copywriter`, `copywriter-codex/copywriter`, and `copywriter-claude/copywriter`. No external symlinks or development dependencies are required at runtime. The committed native manifests are the release inputs; keep all three versions synchronized. The portable manifest is validated against the official pinned v1 schema. Native ingestion and behavioral tests are separate checks.
+
+The repository's MIT license applies to this new plugin. Bundled dependencies retain their own notices. The [source bibliography](skills/write/references/sources.md) attributes editorial guidance; it provides no evidence for product or marketing performance claims.