Fix Docker Swarm discovery network name mismatch

- Changed NetworkName from 'chorus_default' to 'chorus_net'
- This matches the actual network 'CHORUS_chorus_net' (service prefix added automatically)
- Fixes discovered_count:0 issue - now successfully discovering all 25 agents
- Updated IMPLEMENTATION-SUMMARY with deployment status

Result: All 25 CHORUS agents now discovered successfully via Docker Swarm API

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

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

internal/gitea/client.go

@@ -6,10 +6,11 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+	"os"
 	"strconv"
 	"strings"
 	"time"
-	
+
 	"github.com/chorus-services/whoosh/internal/config"
 	"github.com/rs/zerolog/log"
 )
@@ -81,8 +82,13 @@ type IssueRepository struct {
 // NewClient creates a new Gitea API client
 func NewClient(cfg config.GITEAConfig) *Client {
 	token := cfg.Token
-	// TODO: Handle TokenFile if needed
-	
+	// Load token from file if TokenFile is specified and Token is empty
+	if token == "" && cfg.TokenFile != "" {
+		if fileToken, err := os.ReadFile(cfg.TokenFile); err == nil {
+			token = strings.TrimSpace(string(fileToken))
+		}
+	}
+
 	return &Client{
 		baseURL: cfg.BaseURL,
 		token:   token,