diff --git a/AGENTS.md b/AGENTS.md
index fd82cefa..74420a57 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -28,7 +28,7 @@ For any nostr related work, please review the nip documentation located in /docs
 * **Goal:** Always deliver smooth playback while keeping hosting costs low.
 * **Primary transport:** A hosted video URL (MP4/WebM/HLS/DASH) that the `<video>` element can stream directly.
 * **Fallback transport:** A WebTorrent magnet that includes browser‑safe trackers plus optional HTTP hints.
-* **Runtime behavior:** Call `bitvidApp.playVideoWithFallback({ url, magnet })` in `js/app.js`. This function orchestrates URL probing and magnet fallback, delegating low-level stream handling to `js/services/playbackService.js`. `js/playbackUtils.js` now provides magnet/session helper utilities rather than the playback entry point itself.
+* **Runtime behavior:** Call `bitvidApp.playVideoWithFallback({ url, magnet })` (implemented in `js/app/playbackCoordinator.js` and bound to the app instance in `js/app.js`). This function orchestrates URL probing and magnet fallback, delegating low-level stream handling to `js/services/playbackService.js`. `js/playbackUtils.js` now provides magnet/session helper utilities rather than the playback entry point itself.
 * **Content contract:** bitvid posts (Nostr kind `30078`) must include a `title` and at least one of `url` or `magnet`. Prefer to publish both along with optional `thumbnail`, `description`, and `mode` fields. When mirroring to NIP‑94 (`kind 1063`), copy the hosted URL and (optionally) the magnet so other clients can discover the same asset.
 
 ## Styling & Theming Rules (token-first)
diff --git a/README.md b/README.md
index 66eb7f5c..22ff1227 100644
--- a/README.md
+++ b/README.md
@@ -397,13 +397,14 @@ call the facade to keep API surfaces consistent.
 
 ### Nostr video fetch limits
 
-`nostrClient.fetchVideos(options)` now accepts an optional `options.limit` to
-control how many video events are requested per relay. The request size defaults
+The `nostrClient` uses `subscribeVideos(callback, options)` for the main feed to support buffering and streaming. It accepts an optional `options.limit` to control how many video events are requested per relay. The request size defaults
 to `DEFAULT_VIDEO_REQUEST_LIMIT` (150) and is clamped to
 `MAX_VIDEO_REQUEST_LIMIT` (500) to avoid accidental firehose requests as the
 network grows. Use a smaller limit for lightweight surfaces or a larger value
 when running batch jobs that can tolerate additional load.
 
+`nostrClient.fetchVideos(options)` is a legacy wrapper around subscription and is deprecated.
+
 The build command compiles Tailwind with `tailwind.config.cjs`, runs it through
 the PostCSS pipeline defined in `postcss.config.cjs` (for autoprefixing), and
 emits the purged, minified stylesheet at `css/tailwind.generated.css`. That
diff --git a/docs/nostr-event-schemas.md b/docs/nostr-event-schemas.md
index aac60d70..c83a9b86 100644
--- a/docs/nostr-event-schemas.md
+++ b/docs/nostr-event-schemas.md
@@ -182,7 +182,7 @@ Video posts should treat `videoRootId` as the stable series identifier that rema
 | Relay list (`NOTE_TYPES.RELAY_LIST`) | `10002` | Repeating `['r', <relay url>]` tags, optionally with a marker of `'read'` or `'write'` to scope the relay; marker omitted for read/write relays | Empty content |
 | DM relay hints (`NOTE_TYPES.DM_RELAY_LIST`) | `10050` | Repeating `['relay', <relay url>]` tags to advertise delivery relays for NIP-17 gift-wrapped DMs | Empty content |
 | View counter (`NOTE_TYPES.VIEW_EVENT`) | `WATCH_HISTORY_KIND` (default `30079`) | Canonical tag set: `['t','view']`, a pointer tag (`['e', <eventId>]` or `['a', <address>]`), and a stable dedupe tag `['d', <view identifier>]`, with optional `['session','true']` when a session actor signs; schema overrides may append extra tags. `['video', ...]` is supported for legacy overrides only. | Optional plaintext message |
-| Watch history month (`NOTE_TYPES.WATCH_HISTORY`) | `WATCH_HISTORY_KIND` (default `30079`) | Replaceable list tag `['d', `${WATCH_HISTORY_LIST_IDENTIFIER}:<YYYY-MM>`]` with optional `['month', <YYYY-MM>]` marker plus schema append tags; no chunk pointers required. | JSON payload `{ version, month: 'YYYY-MM', items: [{ id: <eventId\|address>, watched_at?: <unix seconds> }] }` |
+| Watch history month (`NOTE_TYPES.WATCH_HISTORY`) | `WATCH_HISTORY_KIND` (default `30079`) | Replaceable list tag `['d', '<YYYY-MM>']` with optional `['month', <YYYY-MM>]` marker plus schema append tags; no chunk pointers required. | JSON payload `{ version, month: 'YYYY-MM', items: [{ id: <eventId\|address>, watched_at?: <unix seconds> }] }` |
 | Subscription list (`NOTE_TYPES.SUBSCRIPTION_LIST`) | `30000` | `['d', 'subscriptions']`, `['encrypted', 'nip44_v2']` (updated to the negotiated scheme at publish time) | NIP-04/NIP-44 encrypted JSON array of NIP-51 follow-set tuples (e.g., `[['p', <hex>], …]`) |
 | Subscription list backup (`NOTE_TYPES.SUBSCRIPTION_BACKUP`) | `30000` | `['d', <identifier>]`, `['encrypted', 'nip44_v2']` | NIP-04/NIP-44 encrypted JSON array of NIP-51 follow-set tuples (e.g., `[['p', <hex>], …]`) |
 | User block list (`NOTE_TYPES.USER_BLOCK_LIST`) | `10000` | `['d', 'user-blocks']` | **LEGACY**. NIP-04/NIP-44 encrypted JSON array of [NIP-51](https://github.com/nostr-protocol/nips/blob/master/51.md) tag tuples. Migrated to standard Mute List (kind `10000`) which uses public tags for mutes and encrypted content for private blocks. |
diff --git a/docs/playback-fallback.md b/docs/playback-fallback.md
index ff7ccea1..8281b9b4 100644
--- a/docs/playback-fallback.md
+++ b/docs/playback-fallback.md
@@ -1,10 +1,10 @@
 # URL-first playback fallback orchestration
 
-This document explains how `bitvidApp.playVideoWithFallback` in `js/app.js` coordinates hosted URL playback first and falls back to WebTorrent when needed. It also covers the supporting helpers in `js/services/playbackService.js`, `js/playbackUtils.js`, and `js/magnetUtils.js`, including how tracker lists and `ws=`/`xs=` hints are applied.
+This document explains how `bitvidApp.playVideoWithFallback` (implemented via `PlaybackCoordinator` in `js/app/playbackCoordinator.js` and bound to the application instance in `js/app.js`) coordinates hosted URL playback first and falls back to WebTorrent when needed. It also covers the supporting helpers in `js/services/playbackService.js`, `js/playbackUtils.js`, and `js/magnetUtils.js`, including how tracker lists and `ws=`/`xs=` hints are applied.
 
 ## High-level flow
 
-1. `bitvidApp.playVideoWithFallback({ url, magnet })` trims inputs, ensures the video modal is ready, and constructs a playback session via `playbackService.createSession(...)`.
+1. `bitvidApp.playVideoWithFallback({ url, magnet })` (via `PlaybackCoordinator`) trims inputs, ensures the video modal is ready, and constructs a playback session via `playbackService.createSession(...)`.
 2. The session (from `js/services/playbackService.js`) derives a canonical magnet payload using `deriveTorrentPlaybackConfig` (from `js/playbackUtils.js`).
 3. Playback starts with the hosted URL when `URL_FIRST_ENABLED` is true and a URL is available; otherwise, it goes directly to torrent playback.
 4. If URL playback stalls or errors, the session triggers `playViaWebTorrent` with the normalized magnet and optional web seed hints.
@@ -59,7 +59,7 @@ The fallback hand-off happens in these places inside `PlaybackSession.execute()`
 
 ```mermaid
 sequenceDiagram
-  participant App as bitvidApp (js/app.js)
+  participant App as App (Coordinator)
   participant Service as PlaybackService (js/services/playbackService.js)
   participant Session as PlaybackSession
   participant Video as HTMLVideoElement
diff --git a/js/nostr/client.js b/js/nostr/client.js
index 2c0f96a9..5c7a4154 100644
--- a/js/nostr/client.js
+++ b/js/nostr/client.js
@@ -927,6 +927,18 @@ export class NostrClient {
     return this.connectionManager.makeCountUnsupportedError(relayUrl);
   }
 
+  resolveEventDTag(event, fallbackEvent = null) {
+    if (event && event.tags) {
+      const dTag = getDTagValueFromTags(event.tags);
+      if (dTag) return dTag;
+    }
+    if (fallbackEvent && fallbackEvent.tags) {
+      const dTag = getDTagValueFromTags(fallbackEvent.tags);
+      if (dTag) return dTag;
+    }
+    return "";
+  }
+
   applyRootCreatedAt(video) {
     if (!video || typeof video !== "object") return;
     const rootId = video.videoRootId;
@@ -3068,8 +3080,8 @@ export class NostrClient {
     return this.signerManager.disconnectRemoteSigner(options);
   }
 
-  async ensureSessionActor() {
-    return this.signerManager.ensureSessionActor();
+  async ensureSessionActor(...args) {
+    return this.signerManager.ensureSessionActor(...args);
   }
 
   clearStoredSessionActor() {
diff --git a/js/nostr/managers/SignerManager.js b/js/nostr/managers/SignerManager.js
index 13ec4b91..14b35e27 100644
--- a/js/nostr/managers/SignerManager.js
+++ b/js/nostr/managers/SignerManager.js
@@ -325,7 +325,7 @@ export class SignerManager {
     return resolveActiveSigner(pubkey);
   }
 
-  async ensureSessionActor() {
+  async ensureSessionActor(createIfMissing = false) {
     if (this.sessionActor) {
       return this.sessionActor;
     }
@@ -341,6 +341,40 @@ export class SignerManager {
       return storedEntry;
     }
 
+    if (createIfMissing) {
+      const tools = (await ensureNostrTools()) || getCachedNostrTools();
+      if (tools) {
+        let privateKey;
+        let pubkey;
+
+        if (typeof tools.generatePrivateKey === "function") {
+          const raw = tools.generatePrivateKey();
+          if (typeof raw === "string") {
+            privateKey = raw;
+            pubkey = tools.getPublicKey(privateKey);
+          } else {
+            pubkey = tools.getPublicKey(raw);
+            privateKey = Array.from(raw)
+              .map((b) => b.toString(16).padStart(2, "0"))
+              .join("");
+          }
+        } else if (typeof tools.generateSecretKey === "function") {
+          const secret = tools.generateSecretKey();
+          pubkey = tools.getPublicKey(secret);
+          privateKey = Array.from(secret)
+            .map((b) => b.toString(16).padStart(2, "0"))
+            .join("");
+        }
+
+        if (privateKey && pubkey) {
+          const newActor = { privateKey, pubkey };
+          this.sessionActor = newActor;
+          persistSessionActorEntry(newActor);
+          return newActor;
+        }
+      }
+    }
+
     return null;
   }
 
@@ -452,7 +486,10 @@ export class SignerManager {
       return { ok: false, error: "extension-missing" };
     }
 
-    extension = typeof window !== "undefined" ? window.nostr : null;
+    if (!extension && typeof window !== "undefined") {
+      extension = window.nostr;
+    }
+
     const message = resolvePermissionStatusMessage(missing, context);
 
     try {
diff --git a/js/nostr/publishHelpers.js b/js/nostr/publishHelpers.js
index 3931e574..9571e2a2 100644
--- a/js/nostr/publishHelpers.js
+++ b/js/nostr/publishHelpers.js
@@ -140,7 +140,21 @@ export function signEventWithPrivateKey(event, privateKey) {
     throw new Error("Missing signing primitives");
   }
 
-  const finalized = finalizeFn(prepared, normalizedKey);
+  let secretKey = normalizedKey;
+  if (typeof Uint8Array !== "undefined") {
+    try {
+      const len = normalizedKey.length;
+      const bytes = new Uint8Array(len / 2);
+      for (let i = 0; i < len; i += 2) {
+        bytes[i / 2] = parseInt(normalizedKey.substring(i, i + 2), 16);
+      }
+      secretKey = bytes;
+    } catch (error) {
+      // Ignore conversion error, secretKey remains string
+    }
+  }
+
+  const finalized = finalizeFn(prepared, secretKey);
   if (
     !finalized ||
     typeof finalized.id !== "string" ||
diff --git a/js/nostr/sessionActor.js b/js/nostr/sessionActor.js
index bbbafc2f..25227dc6 100644
--- a/js/nostr/sessionActor.js
+++ b/js/nostr/sessionActor.js
@@ -484,7 +484,17 @@ export function clearStoredSessionActor() {
 
 export function isSessionActor(nostrClient) {
   const sa = nostrClient?.sessionActor;
-  return !!sa && sa.source !== "nsec";
+  if (!sa || sa.source === "nsec") {
+    return false;
+  }
+  const clientPubkey =
+    typeof nostrClient?.pubkey === "string" ? nostrClient.pubkey : null;
+  const sessionPubkey = typeof sa.pubkey === "string" ? sa.pubkey : null;
+
+  if (clientPubkey && sessionPubkey && clientPubkey !== sessionPubkey) {
+    return false;
+  }
+  return true;
 }
 
 function _closeSessionActorDb() {
diff --git a/js/nostr/viewEvents.js b/js/nostr/viewEvents.js
index fc93c988..d2740263 100644
--- a/js/nostr/viewEvents.js
+++ b/js/nostr/viewEvents.js
@@ -700,8 +700,10 @@ export async function publishViewEvent(
     return { ok: false, error: "invalid-pointer" };
   }
 
-  const actorPubkey = await client.ensureSessionActor();
+  const actorObj = await client.ensureSessionActor(true);
   // actorPubkey derived via client.ensureSessionActor()
+  const actorPubkey = actorObj?.pubkey || (typeof actorObj === "string" ? actorObj : null);
+
   if (!actorPubkey) {
     return { ok: false, error: "missing-actor" };
   }
diff --git a/test_output.txt b/test_output.txt
index 5ee02f4d..f84eb770 100644
--- a/test_output.txt
+++ b/test_output.txt
@@ -1,29 +1,46 @@
+
+→ Running tests/nostr/integration-remote-flow.test.mjs
+VIEW RESULT ERROR: { ok: false, error: 'missing-actor' }
 TAP version 13
-# Subtest: WebTorrent Regression Tests
-    # Subtest: probePeers should report healthy if webseed is present even with 0 peers
-    ok 1 - probePeers should report healthy if webseed is present even with 0 peers
-      ---
-      duration_ms: 204.415485
-      type: 'test'
-      ...
-    # Subtest: probePeers should report unhealthy if no webseed and 0 peers
-    ok 2 - probePeers should report unhealthy if no webseed and 0 peers
-      ---
-      duration_ms: 52.544489
-      type: 'test'
-      ...
-    1..2
-ok 1 - WebTorrent Regression Tests
+# Subtest: nostr login + remote signing + publish + watch history integration
+not ok 1 - nostr login + remote signing + publish + watch history integration
   ---
-  duration_ms: 259.856073
-  type: 'suite'
+  duration_ms: 60.800483
+  type: 'test'
+  location: '/app/tests/nostr/integration-remote-flow.test.mjs:52:1'
+  failureType: 'testCodeFailure'
+  error: |-
+    Expected values to be strictly equal:
+
+    false !== true
+
+  code: 'ERR_ASSERTION'
+  name: 'AssertionError'
+  expected: true
+  actual: false
+  operator: 'strictEqual'
+  stack: |-
+    TestContext.<anonymous> (file:///app/tests/nostr/integration-remote-flow.test.mjs:272:83)
+    async Test.run (node:internal/test_runner/test:1054:7)
+    async startSubtestAfterBootstrap (node:internal/test_runner/harness:296:3)
   ...
 1..1
-# tests 2
-# suites 1
-# pass 2
-# fail 0
+# tests 1
+# suites 0
+# pass 0
+# fail 1
 # cancelled 0
 # skipped 0
 # todo 0
-# duration_ms 269.477515
+# duration_ms 72.354406
+file:///app/scripts/run-targeted-tests.mjs:44
+        reject(new Error(`${relativePath} failed with exit code ${code}`));
+               ^
+
+Error: tests/nostr/integration-remote-flow.test.mjs failed with exit code 1
+    at ChildProcess.<anonymous> (file:///app/scripts/run-targeted-tests.mjs:44:16)
+    at ChildProcess.emit (node:events:519:28)
+    at maybeClose (node:internal/child_process:1101:16)
+    at ChildProcess._handle.onexit (node:internal/child_process:304:5)
+
+Node.js v22.22.0
diff --git a/tests/nostr/integration-remote-flow.test.mjs b/tests/nostr/integration-remote-flow.test.mjs
index 7c024700..6c71921a 100644
--- a/tests/nostr/integration-remote-flow.test.mjs
+++ b/tests/nostr/integration-remote-flow.test.mjs
@@ -130,6 +130,7 @@ test("nostr login + remote signing + publish + watch history integration", async
 
   const toolkit = {
     finalizeEvent,
+    generateSecretKey,
     getEventHash,
     getPublicKey,
     nip04,