docs: fix documentation drift (19 items)

Critical fixes:
- Fix projman version mismatch (3.1.0 -> 3.2.0 in plugin.json)
- Update CLAUDE.md version to 4.1.0

Stale documentation updates:
- Add viz-platform to README.md (plugins, MCP servers, verification table)
- Add viz-platform to COMMANDS-CHEATSHEET.md (8 commands, hooks, MCP table)
- Add viz-platform and data-platform to CANONICAL-PATHS.md
- Add viz-platform and data-platform to CONFIGURATION.md
- Fix CHANGELOG.md tool counts (Layout 5, Theme 6, Page 5)
- Add data-platform to CLAUDE.md repository structure

Missing documentation:
- Create mcp-servers/viz-platform/README.md (21 tools documented)
- Add viz-platform SessionStart hook to COMMANDS-CHEATSHEET.md

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/CONFIGURATION.md

@@ -393,6 +393,8 @@ PR_REVIEW_AUTO_SUBMIT=false
 | **git-flow** | git-flow.env (optional) | .env (optional) | None needed |
 | **clarity-assist** | None | None | None needed |
 | **cmdb-assistant** | netbox.env | None | `/initial-setup` |
+| **data-platform** | postgres.env | .env (optional) | `/initial-setup` |
+| **viz-platform** | None | .env (optional DMC_VERSION) | `/initial-setup` |
 | **doc-guardian** | None | None | None needed |
 | **code-sentinel** | None | None | None needed |
 | **project-hygiene** | None | None | None needed |