fix(marketplace): use relative paths for plugin source fields

[AnExiledDev]

Summary

• All 11 plugin source fields in marketplace.json used bare names (e.g., "codeforge-lsp") instead of relative paths ("./plugins/codeforge-lsp")
• This caused claude plugin marketplace add to fail schema validation, preventing plugins from registering
• Fixes all 11 source paths to use ./plugins/ prefix matching the pluginRoot declaration

Closes #16

Test plan

• devcontainer up → verify setup log shows all plugins installed
• claude plugin marketplace list shows devs-marketplace with correct plugin count

Summary by CodeRabbit

• Bug Fixes

  • Updated plugin source path references in the marketplace to resolve schema validation issues and ensure all plugins register correctly on startup.

• Documentation

  • Added changelog entry documenting plugin marketplace schema improvements.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

Configuration used: defaults

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between c74cce3 and aae273c.

📒 Files selected for processing (2)

• .devcontainer/CHANGELOG.md
• .devcontainer/plugins/devs-marketplace/.claude-plugin/marketplace.json

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📝 Walkthrough

Walkthrough

Updates plugin source field references in the marketplace configuration from bare plugin names to relative paths (e.g., "codeforge-lsp" → "./plugins/codeforge-lsp") to comply with schema validation requirements. Adds corresponding changelog documentation of the fix.

Changes

Cohort / File(s)	Summary
Plugin Marketplace Schema Fix .devcontainer/plugins/devs-marketplace/.claude-plugin/marketplace.json	Updated source field for 11 plugin entries from bare names to relative paths with ./plugins/ prefix to enable schema validation and correct plugin registration.
Changelog Documentation .devcontainer/CHANGELOG.md	Added Unreleased section documenting the marketplace.json schema fix under Plugin Marketplace.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰✨ Paths once bare now wear their proper clothes,
Each plugin finds its home with ./plugins/ prose,
The schema grins, validation flows just right,
Eleven journeys fixed—the marketplace takes flight! 🎪

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: updating plugin source fields to use relative paths instead of bare names.
Linked Issues check	✅ Passed	The PR successfully addresses issue #16 by converting all 11 plugin source fields from bare names to relative paths (./plugins/) as required, passing schema validation.
Out of Scope Changes check	✅ Passed	All changes are in scope: marketplace.json plugin sources updated to relative paths, and CHANGELOG.md entry added documenting the fix. No extraneous modifications present.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch fix/marketplace-schema

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