docs: fix README plugin references after consolidation

[claude]

Issues Found

Critical: Broken functionality (installation code examples reference deleted plugins)

The root README.md was not updated when plugins were consolidated in #72. It still references old plugin names that no longer exist as directories in the repository, meaning every installation command in the README points to a non-existent plugin.

Old names referenced (directories deleted):

• git-rebase-workflow → consolidated into git-workflows
• webfetch-guard → consolidated into content-guards
• markdown-validator → consolidated into content-guards
• token-validator → consolidated into content-guards
• issue-limiter → consolidated into content-guards

Affected sections:

• ## Available Plugins — listed stale plugin names and descriptions
• ## Installation / From Marketplace — claude plugins add commands used deleted plugin IDs
• ## Installation / Local Development — claude plugins link ./old-name commands pointed to non-existent directories

What Was Fixed

• Replaced the Available Plugins section with entries for all 9 current plugins: ai-delegation, codeql-resolver, config-management, content-guards, git-guards, git-workflows, github-workflows, infra-orchestration, process-cleanup
• Updated the From Marketplace install list to use the correct plugin names
• Updated the Local Development claude plugins link commands to use the correct directory names
• All other content (Plugin Structure, Contributing, Development, Repository Integration, License) is unchanged

Detection Trigger

Triggered by merge of commit 97bfa05a43de066c58fa637acc41d9734fad0ab6 (feat: add rate limiting, README validation, and externalize init-worktree (#72)), which consolidated five standalone plugin directories into content-guards, git-guards, and git-workflows without updating the root README.md.

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AI Provenance | Workflow: AI Workflows | Run 22784798934 | Event: workflow_dispatch | Actor: github-actions[bot]

[greptile-apps]

PR author is in the excluded authors list.