feat(server): add owner-tools injection and inline code theme CSS

- Add owner-tools serving and injection for blog owners
- Inline code theme CSS in templates for soft reload support
- Update import paths from github.com/writekitapp to writekit
- Add optional session middleware for owner detection
- Update platform index with improved UI

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

internal/server/server.go

@@ -11,26 +11,27 @@ import (
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
-	"github.com/writekitapp/writekit/internal/auth"
-	"github.com/writekitapp/writekit/internal/cloudflare"
-	"github.com/writekitapp/writekit/internal/db"
-	"github.com/writekitapp/writekit/internal/imaginary"
-	"github.com/writekitapp/writekit/internal/storage"
-	"github.com/writekitapp/writekit/internal/tenant"
+	"writekit/internal/auth"
+	"writekit/internal/cloudflare"
+	"writekit/internal/db"
+	"writekit/internal/imaginary"
+	"writekit/internal/storage"
+	"writekit/internal/tenant"
 )
 
 type Server struct {
-	router      chi.Router
-	database    *db.DB
-	tenantPool  *tenant.Pool
-	tenantCache *tenant.Cache
-	storage     storage.Client
-	imaginary   *imaginary.Client
-	cloudflare  *cloudflare.Client
-	rateLimiter *RateLimiter
-	domain      string
-	jarvisURL   string
-	stopCleanup chan struct{}
+	router        chi.Router
+	database      *db.DB
+	tenantPool    *tenant.Pool
+	tenantCache   *tenant.Cache
+	storage       storage.Client
+	imaginary     *imaginary.Client
+	cloudflare    *cloudflare.Client
+	rateLimiter   *RateLimiter
+	domain        string
+	jarvisURL     string
+	ownerToolsURL string
+	stopCleanup   chan struct{}
 }
 
 func New(database *db.DB, pool *tenant.Pool, cache *tenant.Cache, storageClient storage.Client) *Server {
@@ -44,6 +45,8 @@ func New(database *db.DB, pool *tenant.Pool, cache *tenant.Cache, storageClient
 		jarvisURL = "http://localhost:8090"
 	}
 
+	ownerToolsURL := os.Getenv("OWNER_TOOLS_URL")
+
 	var imgClient *imaginary.Client
 	if url := os.Getenv("IMAGINARY_URL"); url != "" {
 		imgClient = imaginary.New(url)
@@ -52,17 +55,18 @@ func New(database *db.DB, pool *tenant.Pool, cache *tenant.Cache, storageClient
 	cfClient := cloudflare.NewClient()
 
 	s := &Server{
-		router:      chi.NewRouter(),
-		database:    database,
-		tenantPool:  pool,
-		tenantCache: cache,
-		storage:     storageClient,
-		imaginary:   imgClient,
-		cloudflare:  cfClient,
-		rateLimiter: NewRateLimiter(),
-		domain:      domain,
-		jarvisURL:   jarvisURL,
-		stopCleanup: make(chan struct{}),
+		router:        chi.NewRouter(),
+		database:      database,
+		tenantPool:    pool,
+		tenantCache:   cache,
+		storage:       storageClient,
+		imaginary:     imgClient,
+		cloudflare:    cfClient,
+		rateLimiter:   NewRateLimiter(),
+		domain:        domain,
+		jarvisURL:     jarvisURL,
+		ownerToolsURL: ownerToolsURL,
+		stopCleanup:   make(chan struct{}),
 	}
 
 	s.router.Use(middleware.Logger)