fix: convert antfarm from broken submodule to regular directory

Fixes Gitea 500 error caused by invalid submodule reference.
Converted antfarm from pseudo-submodule (missing .gitmodules) to
regular directory with all source files.

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

antfarm/AGENTS.md

@@ -0,0 +1,24 @@
+# Antfarm Agents
+
+Antfarm provisions multi-agent workflows for OpenClaw. It installs workflow agent workspaces, wires agents into the OpenClaw config, and keeps a run record per task.
+
+## Why Antfarm
+
+- **Repeatable workflow execution**: Start the same set of agents with a consistent prompt and workspace every time.
+- **Structured collaboration**: Each workflow defines roles (lead, developer, verifier, reviewer) and how they hand off work.
+- **Traceable runs**: Runs are stored by task title so you can check status without hunting through logs.
+- **Clean lifecycle**: Install, update, or uninstall workflows without manual cleanup.
+
+## What it changes in OpenClaw
+
+- Adds workflow agents to `openclaw.json`.
+- Creates workflow workspaces under `~/.openclaw/workspaces/workflows`.
+- Stores workflow definitions and run state under `~/.openclaw/antfarm`.
+- Inserts an Antfarm guidance block into the main agent’s `AGENTS.md` and `TOOLS.md`.
+
+## Uninstalling
+
+- `antfarm workflow uninstall <workflow-id>` removes the workflow’s agents, workspaces, and run records.
+- `antfarm workflow uninstall --all` wipes all Antfarm-installed workflows and their state.
+
+If something fails, report the exact error and ask the user to resolve it before continuing.