docs: fork notice, repoint marketplace to MomePP, fix stale commands

- Add fork notice banner explaining why this fork exists (PR darrenhinde#296 pre-merged)
- Root README: replace stale `/oac:setup --core` with `/install-context`
  and list actual commands registered in plugin.json (fixes upstream darrenhinde#281)
- Root README: add `/plugin uninstall` + marketplace-remove steps
  (addresses upstream darrenhinde#266)
- Correct subagent count 7 → 6 and skill count 9 → 12
- plugins/claude-code/README.md: repoint marketplace add URL to MomePP fork
  and add uninstall block

Author: MomePP

README.md

@@ -1,3 +1,25 @@
+> **📌 Fork Notice**
+>
+> This is a personal fork of [`darrenhinde/OpenAgentsControl`](https://github.com/darrenhinde/OpenAgentsControl) maintained for **Claude Code plugin** use.
+>
+> **Why this fork exists:** upstream PR [#296](https://github.com/darrenhinde/OpenAgentsControl/pull/296) registers the plugin's 12 skills and 6 commands in `plugin.json` so Claude Code can actually discover them. Until that PR is merged upstream, this fork carries it pre-merged so the Claude Code marketplace install works out of the box.
+>
+> **Install via Claude Code:**
+> ```
+> /plugin marketplace add MomePP/OpenAgentsControl
+> /plugin install oac
+> ```
+>
+> **What's merged vs. upstream `main`:**
+> - ✅ PR [#296](https://github.com/darrenhinde/OpenAgentsControl/pull/296) — `plugin.json` skills/commands registration + `plugin-abilities` hardening
+> - ❌ PR [#297](https://github.com/darrenhinde/OpenAgentsControl/pull/297) — `install.sh` fixes (not needed for marketplace install)
+> - ❌ PR [#298](https://github.com/darrenhinde/OpenAgentsControl/pull/298) — OAC CLI npm package (still WIP upstream)
+> - ❌ PR [#295](https://github.com/darrenhinde/OpenAgentsControl/pull/295) — OpenCode worktree skill (not applicable to Claude Code)
+>
+> Everything below is upstream documentation — refer to the original repo for the authoritative source.
+
+---
+
 <div align="center">
 
 ![OpenAgents Control Hero](docs/images/hero-image.png)
@@ -169,8 +191,9 @@ opencode --agent OpenAgent
 
 1. Register the marketplace:
 ```bash
-/plugin marketplace add darrenhinde/OpenAgentsControl
+/plugin marketplace add MomePP/OpenAgentsControl
 ```
+<sub>Using this fork until upstream merges [PR #296](https://github.com/darrenhinde/OpenAgentsControl/pull/296). Upstream `darrenhinde/OpenAgentsControl` currently does not register skills/commands in `plugin.json`, so Claude Code cannot discover them.</sub>
 
 2. Install the plugin:
 ```bash
@@ -179,19 +202,40 @@ opencode --agent OpenAgent
 
 3. Download context files:
 ```bash
-/oac:setup --core
+/install-context
+```
+<sub>Use `/install-context --profile=extended` or `--profile=all` for larger profiles, `--force` to reinstall, `--dry-run` to preview.</sub>
+
+4. Verify installation:
+```bash
+/oac:status
 ```
 
-4. Start building:
+5. Start building:
 ```
 Add a login endpoint
 ```
 
+**Available commands** (as registered in `plugin.json`):
+- `/install-context` — download context files from the OAC registry
+- `/oac:help` — show OAC usage guide
+- `/oac:status` — show plugin status and installed context
+- `/oac:cleanup` — clean up old temporary files
+- `/brainstorm` — brainstorm ideas and approaches
+- `/debug` — debug an issue systematically
+
+**Uninstall:**
+```bash
+/plugin uninstall oac
+/plugin marketplace remove MomePP/OpenAgentsControl
+# Then remove any downloaded context under .oac/ or .claude/context/ if you no longer need it.
+```
+
 **Features:**
 - ✅ 6-stage workflow with approval gates
 - ✅ Context-aware code generation
-- ✅ 7 specialized subagents (task-manager, context-scout, context-manager, coder-agent, test-engineer, code-reviewer, external-scout)
-- ✅ 9 workflow skills + 6 user commands
+- ✅ 6 specialized subagents (task-manager, context-scout, external-research, coder-agent, test-engineer, code-reviewer)
+- ✅ 12 workflow skills + 6 user commands
 - ✅ Flexible context discovery (.oac config, .claude/context, context, .opencode/context)
 - ✅ Add context from GitHub, worktrees, local files, or URLs
 - ✅ Easy feature planning with `/oac:plan`

plugins/claude-code/README.md

@@ -29,7 +29,8 @@ Install directly from the Claude Code marketplace:
 
 ```bash
 # Add the OpenAgents Control marketplace repository
-/plugin marketplace add https://github.com/darrenhinde/OpenAgentsControl
+# (MomePP fork pre-merges PR #296 so Claude Code can discover skills/commands)
+/plugin marketplace add https://github.com/MomePP/OpenAgentsControl
 
 # Install the OAC plugin
 /plugin install oac
@@ -42,6 +43,14 @@ Install directly from the Claude Code marketplace:
 
 **That's it!** The plugin is now installed and ready to use.
 
+**Uninstall:**
+
+```bash
+/plugin uninstall oac
+/plugin marketplace remove MomePP/OpenAgentsControl
+# Remove downloaded context dirs (.oac/, .claude/context/) if no longer needed.
+```
+
 ### Option 2: Local Development
 
 For plugin development or testing: