chore: bump to v1.3.0; update CHANGELOG, README, ARCHITECTURE docs

docs/ARCHITECTURE.md

@@ -314,6 +314,7 @@ For each connected user the server:
 | See download/target paths | ✗ | ✓ |
 | See Sonarr/Radarr links | ✗ | ✓ |
 | View status panel | ✗ | ✓ |
+| Blocklist & search (import-pending) | ✗ | ✓ |
 
 ### Tag Matching
 
@@ -413,9 +414,16 @@ Each matched download produces an object with:
 | `matchedUserTag` | string / null | Tag label matching the requesting user, or `null` |
 | `tagBadges` | `{label, matchedUser}[]` / undefined | (Admin `showAll` only) Each tag classified against full Emby user list |
 | `importIssues` | string[] / null | Import warning/error messages |
+| `availableForUpgrade` | boolean / undefined | (History) `true` when outcome is `failed` but the content is already on disk (failed upgrade attempt) |
 | `downloadPath` | string / null | (Admin) Download client path |
 | `targetPath` | string / null | (Admin) *arr target path |
 | `arrLink` | string / null | (Admin) Link to *arr web UI |
+| `arrQueueId` | number / null | (Admin, import-pending only) Sonarr/Radarr queue record id |
+| `arrType` | `'sonarr'`/`'radarr'` / null | (Admin, import-pending only) Which *arr service owns this queue entry |
+| `arrInstanceUrl` | string / null | (Admin, import-pending only) Base URL of the *arr instance |
+| `arrInstanceKey` | string / null | (Admin, import-pending only) API key for the *arr instance |
+| `arrContentId` | number / null | (Admin, import-pending only) `episodeId` (Sonarr) or `movieId` (Radarr) for triggering a new search |
+| `arrContentType` | `'episode'`/`'movie'` / null | (Admin, import-pending only) Content type for the search command |
 
 ---
 
@@ -594,6 +602,48 @@ Admin-only per-user download counts (fetches live from APIs, not cached).
 
 ---
 
+### `POST /api/dashboard/blocklist-search`
+
+Admin-only. Removes a Sonarr/Radarr queue item with `blocklist=true` (preventing the same release being grabbed again), then immediately triggers an `EpisodeSearch` or `MoviesSearch` command.
+
+Requires CSRF token (`X-CSRF-Token` header).
+
+**Request Body:**
+```json
+{
+  "arrQueueId": 1234,
+  "arrType": "sonarr",
+  "arrInstanceUrl": "https://sonarr.example.com",
+  "arrInstanceKey": "your-api-key",
+  "arrContentId": 5678,
+  "arrContentType": "episode"
+}
+```
+
+| Field | Required | Description |
+|-------|:--------:|-------------|
+| `arrQueueId` | Yes | Sonarr/Radarr queue record `id` |
+| `arrType` | Yes | `"sonarr"` or `"radarr"` |
+| `arrInstanceUrl` | Yes | Base URL of the *arr instance |
+| `arrInstanceKey` | Yes | API key for the *arr instance |
+| `arrContentId` | Yes | `episodeId` (Sonarr) or `movieId` (Radarr) |
+| `arrContentType` | Yes | `"episode"` or `"movie"` |
+
+**Response (200):** `{ "ok": true }`
+
+**Response (400):** Missing or invalid fields.
+
+**Response (403):** Non-admin user.
+
+**Response (502):** Upstream *arr call failed.
+
+**Side Effects:**
+- Calls `DELETE /api/v3/queue/{id}?removeFromClient=true&blocklist=true` on the *arr instance
+- Calls `POST /api/v3/command` with `EpisodeSearch`/`MoviesSearch` on the *arr instance
+- Triggers a background `pollAllServices()` so the next SSE push reflects the removed item
+
+---
+
 ### `GET /api/history/recent`
 
 Returns recently completed (imported or failed) downloads from Sonarr/Radarr history for the authenticated user, filtered to the last `days` days.
@@ -675,14 +725,19 @@ stateDiagram-v2
 |----------|---------|
 | `checkAuthentication()` | On load: check session → show dashboard or login |
 | `handleLogin()` | Authenticate, fade login → splash → dashboard |
+| `goHome()` | Navigate to default view: switch to Active Downloads tab, close status panel, reset showAll |
 | `startSSE()` | Open `EventSource` to `/stream`; handles incoming data + first-message loading hide |
 | `stopSSE()` | Close `EventSource` and cancel reconnect timer |
 | `renderDownloads()` | Diff-based card rendering (create/update/remove) |
-| `createDownloadCard()` | Build DOM for a single download card; renders tag badges |
+| `createDownloadCard()` | Build DOM for a single download card; renders tag badges, import-issue badge, blocklist button |
 | `updateDownloadCard()` | Update existing card in-place (progress, speed, etc.) |
+| `handleBlocklistSearch()` | Confirm dialog → POST `/blocklist-search` → update button state |
 | `toggleStatusPanel()` | Show/hide admin status panel |
 | `renderStatusPanel()` | Build status HTML (server, polling, SSE clients, cache) |
 | `initThemeSwitcher()` | Light / Dark / Mono theme support |
+| `loadHistory()` | Fetch `/api/history/recent`, store raw items, call `renderHistory()` |
+| `renderHistory()` | Filter items by `ignoreAvailable` flag, render history cards |
+| `createHistoryCard()` | Build DOM for a single history card with outcome/upgrade badges |
 
 ### Themes
 
@@ -1133,10 +1188,12 @@ classDiagram
         +GET /user-summary
         +GET /status
         +GET /cover-art
+        +POST /blocklist-search
         buildDownloadPayload()
         extractUserTag()
         buildTagBadges()
         getEmbyUsers()
+        getImportIssues()
     }
     class RequireAuth["requireAuth.js (Middleware)"] {
         +requireAuth(req, res, next)