feat: specific model/harness/version in PR attribution (#283)

* feat: make PR/commit attribution specific to model, harness, and plugin version

Replace generic "Generated with Claude Code" footer with dynamic attribution
that includes the actual model name, harness tool, and plugin version. LLMs
fill in their own values at commit/PR time. Subagents are explicitly
instructed to do the same.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* style: format attribution substitution guide as table

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* style: rename badge to "Compound Engineering v[VERSION]"

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

* feat: add context window and thinking level to attribution

Separate MODEL into MODEL, CONTEXT, and THINKING placeholders
so each detail is its own table row and easier to read.

Co-Authored-By: Claude Opus 4.6 (1M context, extended thinking) <noreply@anthropic.com>

* style: badge on its own line, model details on next line in PR template

Co-Authored-By: Claude Opus 4.6 (1M context, extended thinking) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: kieranklaassen

CLAUDE.md

@@ -359,14 +359,27 @@ Follow these patterns for commit messages:
 - `Fix [issue]` - Bug fixes
 - `Simplify [component] to [improvement]` - Refactoring
 
-Include the Claude Code footer:
+Include the attribution footer (fill in your actual values):
 
 ```
-🤖 Generated with [Claude Code](https://claude.com/claude-code)
+🤖 Generated with [MODEL] via [HARNESS](HARNESS_URL) + Compound Engineering v[VERSION]
 
-Co-Authored-By: Claude <noreply@anthropic.com>
+Co-Authored-By: [MODEL] ([CONTEXT] context, [THINKING]) <noreply@anthropic.com>
 ```
 
+**Fill in at commit/PR time:**
+
+| Placeholder | Value | Example |
+|-------------|-------|---------|
+| Placeholder | Value | Example |
+|-------------|-------|---------|
+| `[MODEL]` | Model name | Claude Opus 4.6, GPT-5.4 |
+| `[CONTEXT]` | Context window (if known) | 200K, 1M |
+| `[THINKING]` | Thinking level (if known) | extended thinking |
+| `[HARNESS]` | Tool running you | Claude Code, Codex, Gemini CLI |
+| `[HARNESS_URL]` | Link to that tool | `https://claude.com/claude-code` |
+| `[VERSION]` | `plugin.json` → `version` | 2.40.0 |
+
 ## Resources to search for when needing more information
 
 - [Claude Code Plugin Documentation](https://docs.claude.com/en/docs/claude-code/plugins)

plugins/compound-engineering/skills/ce-work/SKILL.md

@@ -228,13 +228,28 @@ This command takes a work document (plan, specification, or todo file) and execu
 
    Brief explanation if needed.
 
-   🤖 Generated with [Claude Code](https://claude.com/claude-code)
+   🤖 Generated with [MODEL] via [HARNESS](HARNESS_URL) + Compound Engineering v[VERSION]
 
-   Co-Authored-By: Claude <noreply@anthropic.com>
+   Co-Authored-By: [MODEL] ([CONTEXT] context, [THINKING]) <noreply@anthropic.com>
    EOF
    )"
    ```
 
+   **Fill in at commit/PR time:**
+
+   | Placeholder | Value | Example |
+   |-------------|-------|---------|
+   | Placeholder | Value | Example |
+   |-------------|-------|---------|
+   | `[MODEL]` | Model name | Claude Opus 4.6, GPT-5.4 |
+   | `[CONTEXT]` | Context window (if known) | 200K, 1M |
+   | `[THINKING]` | Thinking level (if known) | extended thinking |
+   | `[HARNESS]` | Tool running you | Claude Code, Codex, Gemini CLI |
+   | `[HARNESS_URL]` | Link to that tool | `https://claude.com/claude-code` |
+   | `[VERSION]` | `plugin.json` → `version` | 2.40.0 |
+
+   Subagents creating commits/PRs are equally responsible for accurate attribution.
+
 2. **Capture and Upload Screenshots for UI Changes** (REQUIRED for any UI work)
 
    For **any** design changes, new views, or UI modifications, you MUST capture and upload screenshots:
@@ -308,7 +323,8 @@ This command takes a work document (plan, specification, or todo file) and execu
 
    ---
 
-   [![Compound Engineered](https://img.shields.io/badge/Compound-Engineered-6366f1)](https://github.com/EveryInc/compound-engineering-plugin) 🤖 Generated with [Claude Code](https://claude.com/claude-code)
+   [![Compound Engineering v[VERSION]](https://img.shields.io/badge/Compound_Engineering-v[VERSION]-6366f1)](https://github.com/EveryInc/compound-engineering-plugin)
+   🤖 Generated with [MODEL] ([CONTEXT] context, [THINKING]) via [HARNESS](HARNESS_URL)
    EOF
    )"
    ```
@@ -445,7 +461,7 @@ Before creating PR, verify:
 - [ ] Commit messages follow conventional format
 - [ ] PR description includes Post-Deploy Monitoring & Validation section (or explicit no-impact rationale)
 - [ ] PR description includes summary, testing notes, and screenshots
-- [ ] PR description includes Compound Engineered badge
+- [ ] PR description includes Compound Engineered badge with accurate model, harness, and version
 
 ## When to Use Reviewer Agents