Refactor: Eliminate duplicate types - Use handler types directly

- Deleted templates.CollectionDetailData - using templates.CollectionData everywhere
- Deleted templates.BookData - using handlers.BookInfo everywhere
- Deleted templates.DeviceData - using handlers.DeviceInfo everywhere
- Deleted templates.ProgressItemData - using handlers.ProgressWithMedia everywhere
- Deleted templates.convertDevices() helper - Use handlers types directly in templates
- Enhanced handlers.ProgressWithMedia with device metadata fields
- Added handlers.getDeviceIcon() helper
- Updated all templates to import handlers package
- Cleaned up unused imports

This aligns codebase with templ's design philosophy (use Go types directly, no parallel type system)

IMPLEMENTATION_EXACT.md

@@ -42,6 +42,7 @@
 - `internal/router/device.go` - Add regenerate token route
 - `internal/handlers/devices.go` - Add regenerate token handler
 - `templates/devices.templ` - Add copy/regenerate UI
+- `web/src/device-management.ts` - Add device management TypeScript
 - `bruno/sync-kobo/api.bru` - Add URL path token requests
 - `bruno/devices/regenerate-*.bru` - New token regeneration test files
 - `bruno/opds/*-*.bru` - New OPDS authentication test files
@@ -86,14 +87,6 @@ SET
     updated_at = NOW()
 WHERE id = $1
 RETURNING *;
-
--- name: RevokeDevice :exec
-UPDATE devices
-SET
-    auth_token = NULL,
-    sync_enabled = false,
-    updated_at = NOW()
-WHERE id = $1;
 ```
 
 **Verification**: Run `go build ./...` after adding this query to ensure sqlc generates the new function correctly.
@@ -504,24 +497,45 @@ func (h *DeviceHandler) RegenerateDeviceToken(c echo.Context) error {
 3. Add "Regenerate Token" button for each device
 4. Add JavaScript functions for copy and regenerate
 
-#### 1.6.1 Update DeviceData Struct
-
-**Location**: Find `DeviceData` struct (near top of file)
-
-**Current struct** (lines vary, find structure):
+**ADD FIELD** to struct:
 
 ```go
 type DeviceData struct {
-	ID             string
-	DeviceName     string
-	DeviceType     string
-	LastSync       string
-	LastSeen       string
-	SyncEnabled    bool
-	AutoSync       bool
-	SyncFrequency  int
+	ID            string
+	DeviceName    string
+	DeviceType    string
+	LastSync      string
+	LastSeen      string
+	SyncEnabled   bool
+	AutoSync      bool
+	SyncFrequency int
 	CreatedAt      string
 	DeviceMetadata json.RawMessage
+	AuthToken      string // NEW: Device API key for authentication
+}
+```
+
+#### 1.6.3 Update Collection Detail Template
+
+**File**: `templates/collection.templ`
+
+**Location**: Line 213 (function signature)
+
+**Current**:
+```templ
+templ CollectionDetail(user User, collection CollectionDetailData, books []BookData) {
+```
+
+**CHANGE** (use handlers.BookInfo):
+
+```templ
+templ CollectionDetail(user User, collection CollectionData, books []handlers.BookInfo) {
+```
+
+**ADD FIELD** to struct:
+
+```go
+	AuthToken      string // NEW: Device API key for authentication
 }
 ```
 
@@ -872,7 +886,7 @@ put {
 docs {
   ## Regenerate Device Token
 
-  Regenerates the auth token for a device, invalidating the old token immediately.
+  Regenerates auth token for a device, invalidating old token immediately.
 
   **Method:** PUT
 
@@ -899,7 +913,7 @@ docs {
   **Important Notes:**
   - Old token stops working immediately
   - Device must be updated with new token to resume syncing
-  - No data loss - device ID remains the same
+  - No data loss - device ID remains same
 
   **Example Response:**
   ```json
@@ -911,14 +925,24 @@ docs {
       "device_name": "My Kobo Clara",
       "device_type": "kobo",
       "sync_enabled": true,
-      "auto_sync": true
+      "auto_sync": true,
+      "sync_frequency_minutes": 5,
+      "created_at": "2026-02-12T10:00:00Z",
+      "device_metadata": "{...}"
     },
     "sync_urls": {
       "sync_url": "http://localhost:8765/api/sync/kobo/dev_new_token",
-      "markup": "http://localhost:8765/api/sync/kobo/dev_new_token/markup"
+      "markup": "http://localhost:8765/api/sync/kobo/dev_new_token/markup",
+      "bookmark": "http://localhost:8765/api/sync/kobo/dev_new_token/bookmark",
+      "init": "http://localhost:8765/api/sync/kobo/dev_new_token/v1/initialization"
     }
   }
   ```
+
+  **Important Notes:**
+  - Old token stops working immediately
+  - Device must be updated with new token to resume syncing
+  - No data loss - device ID remains same
 }
 ```