Add plugin mesh_repeatability

_plugins/mesh_repeatability.md

@@ -0,0 +1,72 @@
+---
+layout: plugin
+
+id: mesh_repeatability
+title: Mesh Repeatability
+description: Captures Marlin M420 V bed meshes after prints finish, fail, or are cancelled, then compares them against previous captures.
+authors:
+- jperry004
+license: AGPLv3
+
+date: 2026-03-21
+
+homepage: https://github.com/jperry004/OctoPrint-MeshRepeatability
+source: https://github.com/jperry004/OctoPrint-MeshRepeatability
+archive: https://github.com/jperry004/OctoPrint-MeshRepeatability/archive/refs/heads/main.zip
+
+tags:
+- marlin
+- bed leveling
+- mesh
+- analysis
+- tab
+
+screenshots:
+- url: /assets/img/plugins/mesh_repeatability/mesh_screenshot.png
+  alt: Mesh Repeatability tab showing saved captures and parsed mesh details
+  caption: Mesh Repeatability capture history and mesh details
+
+featuredimage: /assets/img/plugins/mesh_repeatability/mesh_screenshot.png
+
+compatibility:
+  octoprint:
+  - ">=1.8.0"
+  python: ">=3.7,<4"
+
+---
+
+# Mesh Repeatability
+
+Mesh Repeatability captures the active Marlin bilinear bed mesh by sending `M420 V`
+after a print completes, fails, or is cancelled. Each capture is saved as its own
+JSON record and compared against the previous successful capture so you can track
+how stable your printer's leveling data is over time.
+
+## Features
+
+- Automatic capture on `PRINT_DONE`, `PRINT_FAILED`, and `PRINT_CANCELLED`
+- Manual mesh capture from the plugin tab
+- Parsing of Marlin bilinear `M420 V` output, including firmware that inserts
+  blank lines between rows
+- Per-capture history with raw output, parsed mesh data, and delta statistics
+- CSV export of saved capture history
+- Automatic pruning of older records to keep the newest 50 captures
+
+## Requirements
+
+- OctoPrint 1.8 or newer
+- Python 3.7 or newer
+- Marlin firmware with bilinear mesh output available through `M420 V`
+
+## Installation
+
+Install through OctoPrint's Plugin Manager using:
+
+```text
+https://github.com/jperry004/OctoPrint-MeshRepeatability/archive/refs/heads/main.zip
+```
+
+## Notes
+
+This plugin is intended for Marlin bilinear meshes. It is not designed for UBL
+parsing.