diff --git a/apps/cli/CHANGELOG.md b/apps/cli/CHANGELOG.md
index 454dab4..f95d91c 100644
--- a/apps/cli/CHANGELOG.md
+++ b/apps/cli/CHANGELOG.md
@@ -31,9 +31,12 @@ access shape).
   `parent_attestation`). Older payloads continue to work.
 - **`claudemesh launch`** — generates an ed25519 session keypair and a
   12 h parent attestation per launch (mesh secret key signs it),
-  forwards both to the daemon under `body.presence`. The flag
-  `CLAUDEMESH_SESSION_PRESENCE` defaults to ON; set `=0` to roll back
-  if a broker on a given mesh is misbehaving.
+  forwards both to the daemon under `body.presence`. Per-session
+  presence is always on; older brokers that don't recognize
+  `session_hello` reply `unknown_message_type` and the daemon quietly
+  drops the per-session WS for that mesh — the regular member-keyed
+  WS still covers all functionality, the only loss is sibling-session
+  visibility on that mesh.
 - **latent 1.29.0 bug fix** — `claudemesh launch` referenced
   `claudeSessionId` before its `const` declaration further down the
   file, hitting the temporal dead zone → `ReferenceError` silently
@@ -44,10 +47,9 @@ access shape).
 
 ### Sequencing
 
-The broker side ships first and bakes for ~24 h. Only then does the
-flag default flip on the CLI side. Older CLIs continue working
-unchanged (no per-session WS), and the protocol is purely additive on
-the wire.
+The broker side ships first and bakes for ~24 h. Older CLIs continue
+working unchanged (no per-session WS), and the protocol is purely
+additive on the wire.
 
 ### Verification (smoke)
 
diff --git a/apps/cli/src/commands/launch.ts b/apps/cli/src/commands/launch.ts
index 1d7c3be..8a48775 100644
--- a/apps/cli/src/commands/launch.ts
+++ b/apps/cli/src/commands/launch.ts
@@ -680,9 +680,8 @@ export async function runLaunch(flags: LaunchFlags, rawArgs: string[]): Promise<
     sessionTokenForCleanup = minted.token;
 
     // Per-session ephemeral keypair + parent attestation (1.30.0+).
-    // Behind CLAUDEMESH_SESSION_PRESENCE: the daemon ignores the
-    // presence material when the flag is off, so sending it always is
-    // forward-compatible.
+    // Older daemons ignore unknown body fields, so sending presence
+    // material always is forward-compatible.
     let presencePayload: {
       session_pubkey: string;
       session_secret_key: string;
diff --git a/apps/cli/src/daemon/run.ts b/apps/cli/src/daemon/run.ts
index d7f1c4e..352cb28 100644
--- a/apps/cli/src/daemon/run.ts
+++ b/apps/cli/src/daemon/run.ts
@@ -28,18 +28,6 @@ export interface RunDaemonOptions {
   clonePolicy?: ClonePolicy;
 }
 
-/**
- * 1.30.0 feature flag. Default ON — the daemon opens a long-lived WS per
- * registered session so siblings see each other in `peer list`. Set
- * CLAUDEMESH_SESSION_PRESENCE=0 (or "false"/"off") to disable for
- * rollback if the broker side is misbehaving on a given mesh.
- */
-function isSessionPresenceEnabled(): boolean {
-  const v = process.env.CLAUDEMESH_SESSION_PRESENCE;
-  if (v === undefined || v === "") return true;
-  return v !== "0" && v.toLowerCase() !== "false" && v.toLowerCase() !== "off";
-}
-
 /** Detect a few common container environments to pick UDS-only by default. */
 function detectContainer(): boolean {
   if (process.env.KUBERNETES_SERVICE_HOST) return true;
@@ -167,14 +155,13 @@ export async function runDaemon(opts: RunDaemonOptions = {}): Promise<number> {
   let drain: DrainHandle | null = null;
   drain = startDrainWorker({ db: outboxDb, brokers });
 
-  // 1.30.0 — per-session broker presence. Default OFF for one release
-  // cycle so the broker side bakes before the flag flips. Opt-in via
-  // CLAUDEMESH_SESSION_PRESENCE=1; flips to default-on in 1.30.0 GA.
-  const sessionPresenceEnabled = isSessionPresenceEnabled();
+  // 1.30.0 — per-session broker presence. Always on. Older CLIs that
+  // don't include `presence` material in the register body just won't
+  // get a session WS; the daemon's own member-keyed broker still
+  // covers them.
   const sessionBrokers = new Map<string, SessionBrokerClient>();
   setRegistryHooks({
     onRegister: (info) => {
-      if (!sessionPresenceEnabled) return;
       if (!info.presence) return;
       const meshConfig = meshConfigs.get(info.mesh);
       if (!meshConfig) {
diff --git a/docs/roadmap.md b/docs/roadmap.md
index 736e5fd..e573815 100644
--- a/docs/roadmap.md
+++ b/docs/roadmap.md
@@ -277,8 +277,7 @@ identity (deferred for security review).
   signature checks; daemon adds a slim `SessionBrokerClient` and
   registry lifecycle hooks. Also fixes a latent 1.29.0 TDZ bug where
   `claudemesh launch`'s IPC session-token registration was silently
-  failing every run. Flag-gated for one cycle, default ON in this
-  release; set `CLAUDEMESH_SESSION_PRESENCE=0` for rollback. Spec at
+  failing every run. Spec at
   `.artifacts/specs/2026-05-04-per-session-presence.md`.
 
 What's left for true v2.0.0 (next sessions):