Add the media MCP tools and live-verified slopbot path

poc/src/media.ts

@@ -15,6 +15,7 @@ import {
     scrapeDir,
     resolveDbRoot,
     type MediaKind,
+    type MediaRow,
     type ScrapeBackend,
     type ScrapeMeta
 } from "../../media-scrape/src/index.js";
@@ -160,7 +161,7 @@ export class MediaService {
             try {
                 const store = new ScrapeStore(dir);
                 try {
-                    const sums = store.sumBytesByKind();
+                    const sums = store.storedBytesByKind();
                     for (const kind of Object.keys(byKind) as MediaKind[]) byKind[kind] += sums[kind];
                 } finally {
                     store.close();
@@ -279,8 +280,24 @@ export class MediaService {
         };
     }
 
+    /** One media row inside a scrape, with its scrape and channel for context. */
+    getMediaItem(scrapeId: string, itemId: number): (MediaRow & { scrapeId: string; channelId: string }) | null {
+        const meta = this.engine.get(scrapeId);
+        if (!meta) return null;
+
+        const store = new ScrapeStore(scrapeDir(this.rootDir, scrapeId));
+        try {
+            const row = store.getMedia(itemId);
+            return row ? { ...row, scrapeId, channelId: meta.channelId } : null;
+        } finally {
+            store.close();
+        }
+    }
+
     /** Read media rows across every scrape, newest scrape first. */
-    queryMedia(options: { kind?: MediaKind; limit?: number; offset?: number } = {}): MediaItemResult[] {
+    queryMedia(
+        options: { kind?: MediaKind; scrapeId?: string; limit?: number; offset?: number } = {}
+    ): MediaItemResult[] {
         const limit = Math.max(1, Math.min(options.limit ?? 60, 500));
         const offset = Math.max(0, options.offset ?? 0);
         const results: MediaItemResult[] = [];
@@ -288,6 +305,7 @@ export class MediaService {
 
         for (const meta of this.engine.list()) {
             if (meta.state === "deleted") continue;
+            if (options.scrapeId && meta.id !== options.scrapeId) continue;
 
             const store = new ScrapeStore(scrapeDir(this.rootDir, meta.id));
             try {