Post-merge cleanup: whitespace, doc sync, canonical skill names, root CLAUDE.md (#33)

Cleanup pass following the CoCounsel merge (#4) and Lexis removal (#5):
- Normalize whitespace and JSON indentation across plugin metadata files
- Sync marketplace.json with plugin.json (ip-legal description, Courtroom5 title field)
- Add missing ai-inventory and invention-intake rows to README skill reference
- Replace stale short-form skill names in customize/cold-start SKILL.md prose with canonical directory names across 11 plugins (same bug class as the /setup -> /cold-start-interview QA fix)
- Fix FYY -> FYI typo and a phantom WebFetch claim in launch-radar docs
- Address review findings: line-wrapped /check-claims, /renewals-due -> /renewal-tracker, stale /setup in references/, agent.yaml comment contradiction, redundant 'intake intake'
- Add root CLAUDE.md with validation conventions (claude plugin validate, I1-I11 invariants, frontmatter requirements) and a marketplace.json description + $schema

No behavioral changes. claude plugin validate passes clean.

external_plugins/cocounsel-legal/.claude-plugin/plugin.json

@@ -6,4 +6,4 @@
     "name": "Thomson Reuters",
     "email": "cocounselsupport@tr.com"
   }
-}
+}

external_plugins/cocounsel-legal/.mcp.json

@@ -1,11 +1,11 @@
 {
-    "mcpServers": {
-        "cocounsel-legal": {
-            "type": "http",
-            "url": "https://legal-mcp.thomsonreuters.com/mcp",
-            "oauth": {
-                "clientId": "QCgP4IGN5JiLqXRHxiAVr3wu1ySo2nQx"
-            }
-        }
+  "mcpServers": {
+    "cocounsel-legal": {
+      "type": "http",
+      "url": "https://legal-mcp.thomsonreuters.com/mcp",
+      "oauth": {
+        "clientId": "QCgP4IGN5JiLqXRHxiAVr3wu1ySo2nQx"
+      }
     }
-}
+  }
+}

external_plugins/cocounsel-legal/README.md

@@ -9,7 +9,7 @@ CoCounsel Legal brings Westlaw Deep Research into Claude for CoCounsel Legal sub
 
 ## Example use cases
 
-1. Research how California courts have treated non-compete agreements for executive employees since 2020. 
+1. Research how California courts have treated non-compete agreements for executive employees since 2020.
 2. I asked you to research California non-competes earlier. Can you now retrieve the full report?
 3. Follow up on that research: how does Texas law differ on executive non-competes for the same period?
 
@@ -43,4 +43,4 @@ Any questions answerable from caselaw, statutes, regulations, administrative mat
 ### Links
 
 - **Documentation:** https://legal-mcp.thomsonreuters.com/docs/connector-guide
-- **Support:** cocounselsupport@tr.com
+- **Support:** cocounselsupport@tr.com