* Revert plugin workflow template changes
Reverts the following commits to replace with a single clean fix:
- e97e203d7 Fix backend-tests find pattern for versioned plugin paths
- 45fe8a310 Fix backend-tests find path for plugin test discovery
- 892c52ba2 Fix plugin backend-tests workflow pnpm 10 symlink error
- 7484d9ea6 Update deprecated GitHub Actions in plugin workflow templates
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* Modernize plugin workflow templates for pnpm 10 and new plugin paths
- Bump actions/checkout v3 → v4, cache-apt-pkgs-action v1.4.2 → v1.6.0
- Replace pnpm link --global with pnpm run plugins i --path (fixes
pnpm 10 "symlink path same as target" error)
- Fix backend test discovery: plugins install to src/plugin_packages/
via live-plugin-manager, not node_modules/
- Run mocha directly from src/ against node_modules/ep_* symlinks
so tests resolve correctly
Tested and verified on ep_table_of_contents.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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