feat: Add rebrand CI/CD workflows to main branch

- Add 72 rebrand workflow files (polkadot→pezkuwi, substrate→bizinikiwi, cumulus→pezcumulus)
- Add GitHub actions, issue templates, and configs
- Removed unnecessary workflows (fork-sync, gitspiegel, upstream-tracker, sync-templates, backport)
- Renamed zombienet test files to match new naming convention

.github/scripts/cmd/README.md

@@ -0,0 +1,62 @@
+# Command Bot Documentation
+
+The command bot allows contributors to perform self-service actions on PRs using comment commands.
+
+## Available Commands
+
+### Label Command (Self-service)
+
+Add labels to your PR without requiring maintainer intervention:
+
+```bash
+/cmd label T1-FRAME                                    # Add single label
+/cmd label T1-FRAME R0-no-crate-publish-required      # Add multiple labels
+/cmd label T1-FRAME A2-substantial D3-involved       # Add multiple labels
+```
+
+**Available Labels:**
+The bot dynamically fetches all current labels from the repository, ensuring it's always up-to-date. For label meanings and descriptions, see the [official label documentation](https://docs.pezkuwichain.io/labels/doc_pezkuwi-sdk.html).
+
+**Features**:
+- **Auto-Correction**: Automatically fixes high-confidence typos (e.g., `T1-FRAM` → `T1-FRAME`)
+- **Case Fixing**: Handles case variations (e.g., `I2-Bug` → `I2-bug`)
+- **Smart Suggestions**: For ambiguous inputs, provides multiple options to choose from
+
+### Other Commands
+
+```bash
+/cmd fmt                           # Format code (cargo +nightly fmt and taplo)
+/cmd prdoc                         # Generate PR documentation
+/cmd bench                         # Run benchmarks
+/cmd update-ui                     # Update UI tests
+/cmd --help                        # Show help for all commands
+```
+
+### Common Flags
+
+- `--quiet`: Don't post start/end messages in PR
+- `--clean`: Clean up previous bot comments
+- `--image <image>`: Override docker image
+
+## How It Works
+
+1. **Command Detection**: The bot listens for comments starting with `/cmd` on PRs
+2. **Permission Check**: Verifies if the user is an organization member
+3. **Command Execution**: Runs the specified command in a containerized environment
+4. **Result Handling**:
+   - For label commands: Applies labels via GitHub API
+   - For other commands: Commits changes back to the PR branch
+5. **Feedback**: Posts success/failure messages in the PR
+
+## Security
+
+- Organization member check prevents unauthorized usage
+- Commands from non-members run using bot scripts from master branch
+
+## Troubleshooting
+
+If a command fails:
+1. Check the GitHub Actions logs linked in the bot's comment
+2. Verify the command syntax matches the examples
+3. Ensure you have permission to perform the action
+4. For label commands, verify the label names are in the allowed list