Add the Bot-tab backfill control room and media strip rules

poc/src/webui.ts

@@ -478,7 +478,8 @@ export function startWebUi(deps: WebUiDeps): WebUiHandle {
                         : current.warnPercent,
                     overrunPercent: Number.isFinite(Number(mediaPrefs?.overrunPercent))
                         ? Number(mediaPrefs.overrunPercent)
-                        : current.overrunPercent
+                        : current.overrunPercent,
+                    tunables: mediaPrefs?.tunables ?? current.tunables
                 };
             }
 
@@ -487,7 +488,9 @@ export function startWebUi(deps: WebUiDeps): WebUiHandle {
                 deps.audio.setDuckEnabled(patch.audio.duck);
             }
 
-            res.json({ ok: true, result: deps.preferences.update(patch) });
+            const updated = deps.preferences.update(patch);
+            if (mediaPrefs !== undefined) deps.media.applyTunables();
+            res.json({ ok: true, result: updated });
         })
     );
 
@@ -773,6 +776,29 @@ export function startWebUi(deps: WebUiDeps): WebUiHandle {
         })
     );
 
+    app.get(
+        "/api/media/backfill",
+        wrap(async (_req, res) => {
+            res.json({ ok: true, result: deps.media.backfillStatus() });
+        })
+    );
+
+    app.post(
+        "/api/media/backfill/start",
+        wrap(async (req, res) => {
+            const chatId = req.body?.chatId ? String(req.body.chatId) : undefined;
+            res.json({ ok: true, result: deps.media.startBackfill(chatId) });
+        })
+    );
+
+    app.post(
+        "/api/media/backfill/pause",
+        wrap(async (req, res) => {
+            const chatId = req.body?.chatId ? String(req.body.chatId) : undefined;
+            res.json({ ok: true, result: deps.media.pauseBackfill(chatId) });
+        })
+    );
+
     app.get(
         "/api/media/:scrapeId/:itemId/thumb",
         wrap(async (req, res) => {