feat(gns2): Phase 8 MCP Docker containers for Gitea direct integration

- docker/mcp-gitea/docker-compose.yml — MCP server container (Sqcoows/forgejo-mcp)
- .kilo/skills/mcp-gitea-connection/SKILL.md — agent migration guide (103 tools)
- src/kilocode/agent-manager/mcp-gitea-client.ts — MCP native client with fallback
- Hybrid mode: MCP primary, REST API fallback if container unavailable
- All 29 Tier 0/1 agents mass-updated with GNS-2 protocol (checkpoint read, event footer)
- Security: no bash for Gitea ops, MCP handles credentials internally

Refs: Milestone #67, Issue #107
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# Gitea MCP Connection Skill
## Purpose
Replace bash/curl Gitea API calls with native Model Context Protocol (MCP) server connection.
## Architecture
```
Agent → MCP Client → SSE Stream (port 3001) → MCP Gitea Server → Gitea API
```
## Setup
### 1. Start MCP Gitea Container
```bash
docker-compose -f docker/mcp-gitea/docker-compose.yml up -d
```
### 2. Verify Connection
```bash
# Health check
curl http://localhost:3001/health
# List available tools
curl http://localhost:3001/tools
# Expected output (103 tools)
[
{"name": "gitea_create_issue", "description": "..."},
{"name": "gitea_post_comment", "description": "..."},
{"name": "gitea_update_issue", "description": "..."},
{"name": "gitea_get_issue", "description": "..."},
{"name": "gitea_list_labels", "description": "..."},
{"name": "gitea_set_labels", "description": "..."},
{"name": "gitea_get_timeline", "description": "..."},
{"name": "gitea_lock_issue", "description": "..."},
{"name": "gitea_get_milestone", "description": "..."},
...
]
```
## Agent Migration
### Before (bash curl)
```bash
# ❌ Inefficient, error-prone
curl -s -u "NW:eshkink0t" \
-X POST "https://git.softuniq.eu/api/v1/repos/UniqueSoft/APAW/issues" \
-H "Content-Type: application/json" \
-d '{"title":"...","body":"..."}'
```
### After (MCP tool call)
```json
// ✅ Native, type-safe, discoverable
{
"tool": "gitea_create_issue",
"parameters": {
"owner": "UniqueSoft",
"repo": "APAW",
"title": "...",
"body": "...",
"labels": ["status::new"]
}
}
```
## Available MCP Tools (103 total)
### Issue Management
| Tool | Parameters | Returns |
|------|-----------|---------|
| `gitea_create_issue` | owner, repo, title, body, labels, milestone | Issue object |
| `gitea_get_issue` | owner, repo, issue_number | Issue object |
| `gitea_update_issue` | owner, repo, issue_number, title?, body?, state?, labels?, assignee? | Updated issue |
| `gitea_close_issue` | owner, repo, issue_number | Closed issue |
| `gitea_lock_issue` | owner, repo, issue_number | Locked issue |
| `gitea_unlock_issue` | owner, repo, issue_number | Unlocked issue |
### Comments
| Tool | Parameters | Returns |
|------|-----------|---------|
| `gitea_post_comment` | owner, repo, issue_number, body | Comment object |
| `gitea_get_comments` | owner, repo, issue_number | Comment[] |
| `gitea_update_comment` | owner, repo, comment_id, body | Updated comment |
### Labels
| Tool | Parameters | Returns |
|------|-----------|---------|
| `gitea_list_labels` | owner, repo | Label[] |
| `gitea_create_label` | owner, repo, name, color, description | Label |
| `gitea_set_labels` | owner, repo, issue_number, labels | Issue |
| `gitea_add_label` | owner, repo, issue_number, label | Issue |
| `gitea_remove_label` | owner, repo, issue_number, label_id | void |
### Timeline & Events
| Tool | Parameters | Returns |
|------|-----------|---------|
| `gitea_get_timeline` | owner, repo, issue_number | TimelineEvent[] |
| `gitea_parse_events` | comments[] | GNSEvent[] |
### Checkpoints (GNS-2)
| Tool | Parameters | Returns |
|------|-----------|---------|
| `gitea_get_checkpoint` | owner, repo, issue_number | Checkpoint or null |
| `gitea_update_checkpoint` | owner, repo, issue_number, checkpoint | Updated issue |
| `gitea_clear_checkpoint` | owner, repo, issue_number | Updated issue |
### Milestones
| Tool | Parameters | Returns |
|------|-----------|---------|
| `gitea_create_milestone` | owner, repo, title, description, due_on | Milestone |
| `gitea_get_milestone` | owner, repo, milestone_id | Milestone |
| `gitea_update_milestone` | owner, repo, milestone_id, title?, state?, description? | Milestone |
| `gitea_list_milestone_issues` | owner, repo, milestone_id, state? | Issue[] |
### Polling
| Tool | Parameters | Returns |
|------|-----------|---------|
| `gitea_get_triggered_issues` | owner, repo, labels?, assignee?, milestone?, updated_after?, is_locked? | Issue[] |
## Security
- Credentials stored in container env vars, never in agent prompts
- No bash execution for Gitea API calls
- Agent permissions change: `bash: ask` (was `allow`) for Gitea operations
- Circuit breaker: `is_locked` prevents any MCP tool execution
## Migration Checklist
- [ ] `gitea-api.md` — migrate curl examples to MCP tool calls
- [ ] `gitea-client.ts` — add MCP client wrapper
- [ ] Agent permissions — remove `bash: allow` for Gitea, add `mcp: allow`
- [ ] `init-gns-labels.py` — replace API calls with `gitea_create_label` tool
- [ ] `validate-gns-agents.py` — add MCP tool availability check
## Error Handling
| Error | Cause | Action |
|-------|-------|--------|
| Connection refused | MCP container not running | `docker-compose up -d` |
| 401 Unauthorized | Token missing | Check `GITEA_TOKEN` env var |
| 404 Not Found | Issue/label not found | Verify issue number |
| 422 Validation | Invalid parameters | Check tool schema |
## Testing
```bash
# Start container
docker-compose -f docker/mcp-gitea/docker-compose.yml up -d
# Wait for health
sleep 5
# Test issue creation
curl -X POST http://localhost:3001/tools/gitea_create_issue \
-H "Content-Type: application/json" \
-d '{"owner":"UniqueSoft","repo":"APAW","title":"MCP Test","body":"Test body"}'
# Test checkpoint
curl -X POST http://localhost:3001/tools/gitea_update_checkpoint \
-H "Content-Type: application/json" \
-d '{"owner":"UniqueSoft","repo":"APAW","issue_number":1,"checkpoint":{"version":2}}'
```
## References
- MCP Server: https://github.com/Sqcows/forgejo-mcp
- MCP Protocol: https://modelcontextprotocol.io
- Gitea API: https://docs.gitea.com/api
- Docker Compose: `docker/mcp-gitea/docker-compose.yml`