Fix Go module imports and add dynamic Ollama model selection with N8N integration

- Fixed module path from github.com/deepblackcloud/bzzz to github.com/anthonyrawlins/bzzz
- Added dynamic Ollama model detection via /api/tags endpoint
- Implemented intelligent model selection through N8N webhook integration
- Added BZZZ_MODEL_SELECTION_WEBHOOK environment variable support
- Fixed GitHub assignee issue by using valid username instead of peer ID
- Added comprehensive model fallback mechanisms
- Updated all import statements across the codebase
- Removed duplicate systemd service file
- Added sandbox execution environment and type definitions

🤖 Generated with [Claude Code](https://claude.ai/code)

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

github/client.go

@@ -156,8 +156,10 @@ func (c *Client) ClaimTask(issueNumber int, agentID string) (*Task, error) {
 	}
 	
 	// Attempt atomic assignment using GitHub's native assignment
+	// GitHub only accepts existing usernames, so we'll assign to the repo owner
+	githubAssignee := "anthonyrawlins"
 	issueRequest := &github.IssueRequest{
-		Assignee: &agentID,
+		Assignee: &githubAssignee,
 	}
 	
 	// Add in-progress label
@@ -180,6 +182,23 @@ func (c *Client) ClaimTask(issueNumber int, agentID string) (*Task, error) {
 		return nil, fmt.Errorf("failed to claim task: %w", err)
 	}
 	
+	// Add a comment to track which Bzzz agent claimed this task
+	claimComment := fmt.Sprintf("🐝 **Task claimed by Bzzz agent:** `%s`\n\nThis task has been automatically claimed by the Bzzz P2P task coordination system.", agentID)
+	commentRequest := &github.IssueComment{
+		Body: &claimComment,
+	}
+	_, _, err = c.client.Issues.CreateComment(
+		c.ctx,
+		c.config.Owner,
+		c.config.Repository,
+		issueNumber,
+		commentRequest,
+	)
+	if err != nil {
+		// Log error but don't fail the claim
+		fmt.Printf("⚠️ Failed to add claim comment: %v\n", err)
+	}
+	
 	// Create a task branch
 	if err := c.createTaskBranch(issueNumber, agentID); err != nil {
 		// Log error but don't fail the claim
@@ -315,6 +334,28 @@ func (c *Client) createTaskBranch(issueNumber int, agentID string) error {
 	return nil
 }
 
+// CreatePullRequest creates a new pull request for a completed task.
+func (c *Client) CreatePullRequest(issueNumber int, branchName, agentID string) (*github.PullRequest, error) {
+	title := fmt.Sprintf("fix: resolve issue #%d via bzzz agent %s", issueNumber, agentID)
+	body := fmt.Sprintf("This pull request resolves issue #%d, and was automatically generated by the Bzzz agent `%s`.", issueNumber, agentID)
+	head := branchName
+	base := c.config.BaseBranch
+
+	pr := &github.NewPullRequest{
+		Title: &title,
+		Body:  &body,
+		Head:  &head,
+		Base:  &base,
+	}
+
+	newPR, _, err := c.client.PullRequests.Create(c.ctx, c.config.Owner, c.config.Repository, pr)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create pull request: %w", err)
+	}
+
+	return newPR, nil
+}
+
 // formatTaskBody formats task details into GitHub issue body
 func (c *Client) formatTaskBody(task *Task) string {
 	body := fmt.Sprintf("**Task Type:** %s\n", task.TaskType)