fix: update README.md with new setup commands and correct GITEA_ORG placement

- Add /project-init and /project-sync commands to projman
- Add setup commands (/initial-setup, /project-init, /project-sync) to pr-review
- Add /initial-setup to cmdb-assistant
- Replace manual MCP setup instructions with /initial-setup wizard
- Move GITEA_ORG from system-level to project-level in examples
- Add COMMANDS-CHEATSHEET.md and UPDATING.md to documentation table
- Fix GITEA_ORG validation in projman initial-setup (was checking system config)

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

plugins/projman/commands/initial-setup.md

@@ -225,11 +225,13 @@ Use AskUserQuestion:
 Read the config file and verify it has non-placeholder values:
 
 ```bash
-source ~/.config/claude/gitea.env && echo "URL: $GITEA_URL" && echo "ORG: $GITEA_ORG" && echo "TOKEN_LENGTH: ${#GITEA_TOKEN}"
+source ~/.config/claude/gitea.env && echo "URL: $GITEA_URL" && echo "TOKEN_LENGTH: ${#GITEA_TOKEN}"
 ```
 
 If TOKEN_LENGTH is less than 10 or contains "PASTE" or "your_", the token hasn't been set properly.
 
+**Note:** GITEA_ORG is configured per-project in `.env`, not in the system-level config.
+
 **Test connectivity (optional but recommended):**
 
 ```bash