diff --git a/.github/justfile b/.github/justfile
index 347e41e..0249a46 100644
--- a/.github/justfile
+++ b/.github/justfile
@@ -23,7 +23,7 @@ _step recipe:
         just {{recipe}}
     fi
 
-# The full gate: checks, the cross-host pairing matrix, the deltic
+# The full gate: checks, the cross-host pairing matrix, the polyengine
 # endpoint exam, and the measured-claims bench. The execution-model
 # probes are NOT here: what they assert about the host's async ABI is
 # now asserted by the endpoint surface itself on both hosts (see the
@@ -35,5 +35,5 @@ checks:
     @just gha::_step validate-wit
     @just gha::_step test
     @just gha::_step matrix
-    @just gha::_step exam-deltic
+    @just gha::_step exam-polyengine
     @just gha::_step bench
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 583199a..9ba36fc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -32,7 +32,7 @@ jobs:
         # rust-toolchain.toml; `rustup show` installs exactly those.
         run: rustup show active-toolchain || rustup toolchain install
 
-      - name: Install Deno (the deltic host; stock, no flags)
+      - name: Install Deno (the polyengine host; stock, no flags)
         uses: denoland/setup-deno@v2
         with:
           deno-version: "2.9.5"
diff --git a/.github/workflows/jsr-publish.yml b/.github/workflows/jsr-publish.yml
index d3d2804..4c1fef3 100644
--- a/.github/workflows/jsr-publish.yml
+++ b/.github/workflows/jsr-publish.yml
@@ -1,4 +1,4 @@
-# Publish @polymorph/iroh (host-deltic) to JSR: build the endpoint
+# Publish @polymorph/iroh (host-polyengine) to JSR: build the endpoint
 # component from this tree, embed it as the package's base64 asset
 # module, and publish.
 #
@@ -28,6 +28,6 @@ jobs:
       - name: Build and embed the endpoint component
         run: |
           cargo build -p iroh-endpoint --target wasm32-wasip2 --release
-          deno run --allow-read=target --allow-write=host-deltic/src/endpoint_component.ts scripts/embed-endpoint-component.ts
+          deno run --allow-read=target --allow-write=host-polyengine/src/endpoint_component.ts scripts/embed-endpoint-component.ts
       - run: deno publish --allow-dirty
-        working-directory: host-deltic
+        working-directory: host-polyengine
diff --git a/.gitignore b/.gitignore
index 46d63b7..b130fb4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,4 +3,4 @@ node_modules
 /experiments/iroh-relay-ws/host/dist
 /experiments/iroh-blobs/host/dist
 /experiments/ping-demo/web/site
-/host-deltic/src/endpoint_component.ts
+/host-polyengine/src/endpoint_component.ts
diff --git a/AGENTS.md b/AGENTS.md
index 3e54c3f..a47a122 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -61,7 +61,7 @@ record (and usually an issue to resolve), not a refactor.
   is a PR to the sibling.
 - **Anything browser-hosted must stay browser-compatible**: host-side JS
   uses only standard browser APIs (`crypto.subtle`, `RTCPeerConnection`,
-  `WebSocket`); Deno (via `host-deltic/`) is just the current runner.
+  `WebSocket`); Deno (via `host-polyengine/`) is just the current runner.
 - **Divergence between targets is resolved, not accumulated.** Apply the
   webcrypto sibling's portability ladder in order: design it out; enhance
   the deficient implementation (never crypto, never key-material
diff --git a/Cargo.lock b/Cargo.lock
index 5bef178..3cb400f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -158,7 +158,7 @@ version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -169,7 +169,7 @@ checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
 dependencies = [
  "anstyle",
  "once_cell_polyfill",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -525,7 +525,7 @@ dependencies = [
  "cap-primitives",
  "cap-std",
  "io-lifetimes 3.0.1",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -542,7 +542,7 @@ dependencies = [
  "maybe-owned",
  "rustix",
  "rustix-linux-procfs",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
  "winx",
 ]
 
@@ -1596,7 +1596,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39cab71617ae0d63f51a36d69f866391735b51691dbda63cf6f96d042b63efeb"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -3390,7 +3390,7 @@ version = "0.50.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7957b9740744892f114936ab4a57b3f487491bbeafaf8083688b16841a4240e5"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -3879,7 +3879,7 @@ dependencies = [
 [[package]]
 name = "polymorph-tls"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-tls.git?rev=e6f244c2136a1fdc8bd836aab05572620c3d3df4#e6f244c2136a1fdc8bd836aab05572620c3d3df4"
+source = "git+https://github.com/polymorph-components/polymorph-tls.git?rev=ab4f88367b838f07a64ea64cfcfd5e03f494ea35#ab4f88367b838f07a64ea64cfcfd5e03f494ea35"
 dependencies = [
  "polymorph-tls-profile",
  "rustls",
@@ -3890,7 +3890,7 @@ dependencies = [
 [[package]]
 name = "polymorph-tls-profile"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-tls.git?rev=e6f244c2136a1fdc8bd836aab05572620c3d3df4#e6f244c2136a1fdc8bd836aab05572620c3d3df4"
+source = "git+https://github.com/polymorph-components/polymorph-tls.git?rev=ab4f88367b838f07a64ea64cfcfd5e03f494ea35#ab4f88367b838f07a64ea64cfcfd5e03f494ea35"
 dependencies = [
  "ed25519-dalek 3.0.0",
  "rustls",
@@ -3900,7 +3900,7 @@ dependencies = [
 [[package]]
 name = "polymorph-tls-quic"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-tls.git?rev=e6f244c2136a1fdc8bd836aab05572620c3d3df4#e6f244c2136a1fdc8bd836aab05572620c3d3df4"
+source = "git+https://github.com/polymorph-components/polymorph-tls.git?rev=ab4f88367b838f07a64ea64cfcfd5e03f494ea35#ab4f88367b838f07a64ea64cfcfd5e03f494ea35"
 dependencies = [
  "aead 0.6.1",
  "aes 0.9.2",
@@ -3924,7 +3924,7 @@ dependencies = [
 [[package]]
 name = "polymorph-webcrypto-core"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-webcrypto.git?rev=227d075a9f306764029dd6762fdab73c6cfc893f#227d075a9f306764029dd6762fdab73c6cfc893f"
+source = "git+https://github.com/polymorph-components/polymorph-webcrypto.git?rev=422796bd4ca8450fc527415b7cc60ea8ab1b36ff#422796bd4ca8450fc527415b7cc60ea8ab1b36ff"
 dependencies = [
  "aes 0.8.4",
  "aes-gcm 0.10.3",
@@ -3956,7 +3956,7 @@ dependencies = [
 [[package]]
 name = "polymorph-webcrypto-guest"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-webcrypto.git?rev=227d075a9f306764029dd6762fdab73c6cfc893f#227d075a9f306764029dd6762fdab73c6cfc893f"
+source = "git+https://github.com/polymorph-components/polymorph-webcrypto.git?rev=422796bd4ca8450fc527415b7cc60ea8ab1b36ff#422796bd4ca8450fc527415b7cc60ea8ab1b36ff"
 dependencies = [
  "futures",
  "wit-bindgen 0.59.0",
@@ -3965,7 +3965,7 @@ dependencies = [
 [[package]]
 name = "polymorph-webcrypto-wasmtime"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-webcrypto.git?rev=227d075a9f306764029dd6762fdab73c6cfc893f#227d075a9f306764029dd6762fdab73c6cfc893f"
+source = "git+https://github.com/polymorph-components/polymorph-webcrypto.git?rev=422796bd4ca8450fc527415b7cc60ea8ab1b36ff#422796bd4ca8450fc527415b7cc60ea8ab1b36ff"
 dependencies = [
  "futures",
  "mea",
@@ -4226,7 +4226,7 @@ dependencies = [
  "libc",
  "log",
  "socket2",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -4892,7 +4892,7 @@ dependencies = [
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -4969,7 +4969,7 @@ dependencies = [
  "security-framework",
  "security-framework-sys",
  "webpki-root-certs",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5123,7 +5123,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b55fb86dfd3a2f5f76ea78310a88f96c4ea21a3031f8d212443d56123fd0521"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -5355,7 +5355,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c3d1e2c7f27f8d4cb10542a02c49005dbd6e93095799d6f3be745fae9f8fedd4"
 dependencies = [
  "libc",
- "windows-sys 0.61.2",
+ "windows-sys 0.60.2",
 ]
 
 [[package]]
@@ -5534,7 +5534,7 @@ dependencies = [
  "getrandom 0.4.3",
  "once_cell",
  "rustix",
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
@@ -6559,7 +6559,7 @@ dependencies = [
 [[package]]
 name = "wasmtime-webrtc-datachannels"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-webrtc-datachannels.git?rev=0f991407c2698577df3d117789024c14be250bd6#0f991407c2698577df3d117789024c14be250bd6"
+source = "git+https://github.com/polymorph-components/polymorph-webrtc-datachannels.git?rev=42f76c988c3356e62abf33af6a04f1daf8f0839c#42f76c988c3356e62abf33af6a04f1daf8f0839c"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -6573,7 +6573,7 @@ dependencies = [
 [[package]]
 name = "wasmtime-websocket"
 version = "0.1.0"
-source = "git+https://github.com/polymorph-components/polymorph-websocket.git?rev=7c364c593d51a977f5f267711b06d0fb18cfc068#7c364c593d51a977f5f267711b06d0fb18cfc068"
+source = "git+https://github.com/polymorph-components/polymorph-websocket.git?rev=563aa33fc214920e80a2fec6019e91a127969a7a#563aa33fc214920e80a2fec6019e91a127969a7a"
 dependencies = [
  "futures",
  "rustls",
@@ -6738,7 +6738,7 @@ version = "0.1.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c2a7b1c03c876122aa43f3020e6c3c3ee5c05081c9a00739faf7503aeba10d22"
 dependencies = [
- "windows-sys 0.61.2",
+ "windows-sys 0.59.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index da60957..0c636a0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -16,12 +16,12 @@ publish = false
 # Sibling crates are consumed as git dependencies pinned at a commit, per
 # the siblings' own release practice; bumped deliberately.
 [workspace.dependencies]
-polymorph-tls-profile = { git = "https://github.com/polymorph-components/polymorph-tls.git", rev = "e6f244c2136a1fdc8bd836aab05572620c3d3df4" }
-polymorph-tls-quic = { git = "https://github.com/polymorph-components/polymorph-tls.git", rev = "e6f244c2136a1fdc8bd836aab05572620c3d3df4" }
-polymorph-webcrypto-guest = { git = "https://github.com/polymorph-components/polymorph-webcrypto.git", rev = "227d075a9f306764029dd6762fdab73c6cfc893f" }
-polymorph-webcrypto-wasmtime = { git = "https://github.com/polymorph-components/polymorph-webcrypto.git", rev = "227d075a9f306764029dd6762fdab73c6cfc893f" }
-wasmtime-webrtc-datachannels = { git = "https://github.com/polymorph-components/polymorph-webrtc-datachannels.git", rev = "0f991407c2698577df3d117789024c14be250bd6" }
-wasmtime-websocket = { git = "https://github.com/polymorph-components/polymorph-websocket.git", rev = "7c364c593d51a977f5f267711b06d0fb18cfc068" }
+polymorph-tls-profile = { git = "https://github.com/polymorph-components/polymorph-tls.git", rev = "ab4f88367b838f07a64ea64cfcfd5e03f494ea35" }
+polymorph-tls-quic = { git = "https://github.com/polymorph-components/polymorph-tls.git", rev = "ab4f88367b838f07a64ea64cfcfd5e03f494ea35" }
+polymorph-webcrypto-guest = { git = "https://github.com/polymorph-components/polymorph-webcrypto.git", rev = "422796bd4ca8450fc527415b7cc60ea8ab1b36ff" }
+polymorph-webcrypto-wasmtime = { git = "https://github.com/polymorph-components/polymorph-webcrypto.git", rev = "422796bd4ca8450fc527415b7cc60ea8ab1b36ff" }
+wasmtime-webrtc-datachannels = { git = "https://github.com/polymorph-components/polymorph-webrtc-datachannels.git", rev = "42f76c988c3356e62abf33af6a04f1daf8f0839c" }
+wasmtime-websocket = { git = "https://github.com/polymorph-components/polymorph-websocket.git", rev = "563aa33fc214920e80a2fec6019e91a127969a7a" }
 
 [profile.release]
 lto = true
diff --git a/README.md b/README.md
index a0d0e98..9a7fb31 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ Everything here is **unstable** (0.x), but [releases](../../releases) are
 **caret-honest**: within a minor line they stay backward-compatible, and
 anything breaking bumps the minor. Consumption is pinned at a release's
 commit — sibling checkouts and vendored WIT at pinned release commits,
-the release-pinned deltic/JSR graph — and bumped deliberately.
+the release-pinned polyengine/JSR graph — and bumped deliberately.
 
 ## What iroh is, layer by layer
 
@@ -207,8 +207,8 @@ superseded it; the history is in the git log.)
   while a UDP path finds the true one.
 - **Every pairing exercised, plus upstream interop**: the Wasmtime
   host (`host-wasmtime/`, the sibling host crates) runs authenticated
-  echoes on every wire through the stock relay, and the deltic JS host
-  (`host-deltic/`) runs the same surface on stock Deno.
+  echoes on every wire through the stock relay, and the polyengine JS host
+  (`host-polyengine/`) runs the same surface on stock Deno.
 
 To run it: build the components, hosts, and the upstream relay, then
 hand the server's printed endpoint ID to the client
@@ -249,12 +249,12 @@ task per bound endpoint owns all I/O, and wake-ups are event-driven in
 both directions — resource methods kick the pump to flush their
 mutations and park on wakers the pump fires (cross-task wakeups ride
 wit-bindgen's `inter-task-wakeup` channel, delivered by both hosts).
-The JS host for this surface is `host-deltic/`: it drives the endpoint
-component runtime-linked under [deltic](https://github.com/lann/deltic)
+The JS host for this surface is `host-polyengine/`: it drives the endpoint
+component runtime-linked under [polyengine](https://github.com/polymorph-components/polyengine)
 on stock Deno (no transpile step, no engine flag) — the jco host this
 repository ran previously blocked on an upstream jco scheduler defect
-(the detached-pump shape deltic's scheduler serves instead) and has
-retired. `just exam-deltic` runs
+(the detached-pump shape polyengine's scheduler serves instead) and has
+retired. `just exam-polyengine` runs
 its seven-scenario endpoint exam — bind + identity (including the
 no-UDP profile's `not-supported`), relay echo, the WebRTC upgrade,
 the issue #10 concurrency rows as passing assertions, the stream
@@ -263,8 +263,8 @@ terminal outcomes, idle survival, and teardown.
 `just matrix` runs every claimed pairing — the composed endpoint demo
 on every wire, cross-relay and upstream interop included, plus the
 surface's negative probes — against stock `iroh-relay` servers; `just
-bench` gates the measured claims; `just exam-deltic` gates the
-deltic-hosted endpoint surface; `just ci` is the full gate. `just
+bench` gates the measured claims; `just exam-polyengine` gates the
+polyengine-hosted endpoint surface; `just ci` is the full gate. `just
 interop-prod` (manual, internet-dependent) checks the production
 relays.
 
@@ -279,7 +279,7 @@ Tracked as issues; the headline ones:
   attribution and reachability probing, the native half of address
   discovery.
 - The jco browser leg (issue #10): resolved by moving the JS host to
-  deltic (`host-deltic/`), which serves the detached-pump shape jco's
+  polyengine (`host-polyengine/`), which serves the detached-pump shape jco's
   scheduler could not; the jco host and its scheduler-defect
   workarounds have retired. Root cause and partial upstream fix
   attempts remain recorded on lann/jco#11 and PR #27 for reference.
diff --git a/experiments/iroh-blobs/host/browser.html b/experiments/iroh-blobs/host/browser.html
index bef8d34..1f18e5e 100644
--- a/experiments/iroh-blobs/host/browser.html
+++ b/experiments/iroh-blobs/host/browser.html
@@ -1,6 +1,6 @@
 <!doctype html>
 <!-- Browser harness for the iroh-blobs spike: the same sockets shim,
-     bridges, and deltic runtime as the Deno driver, runtime-linked in the
+     bridges, and polyengine runtime as the Deno driver, runtime-linked in the
      browser (JSPI). Serve from the repository root so the guest and
      translator fetches resolve; driven by browser-test.mjs, which bundles
      dist/browser-entry.js first. -->
diff --git a/experiments/iroh-blobs/host/package.json b/experiments/iroh-blobs/host/package.json
index 2c1c643..b1bff7b 100644
--- a/experiments/iroh-blobs/host/package.json
+++ b/experiments/iroh-blobs/host/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.1",
   "private": true,
   "type": "module",
-  "description": "Spike host harness deps: Playwright for the browser leg (the drivers themselves run on Deno under deltic).",
+  "description": "Spike host harness deps: Playwright for the browser leg (the drivers themselves run on Deno under polyengine).",
   "scripts": {
     "test:browser": "node browser-test.mjs"
   },
diff --git a/experiments/iroh-blobs/host/run.ts b/experiments/iroh-blobs/host/run.ts
index 44478ae..58ead52 100644
--- a/experiments/iroh-blobs/host/run.ts
+++ b/experiments/iroh-blobs/host/run.ts
@@ -3,10 +3,10 @@
 // WebRTC). The guest prints its own results; this driver adds a
 // watchdog and the shim/bridge counters.
 //
-// Runs on stock Deno; the translator is `@deltic/translator`'s packaged
+// Runs on stock Deno; the translator is `@polyengine/translator`'s packaged
 // asset, loaded through the module graph.
 
-import { defaultTranslator } from "@deltic/translator";
+import { defaultTranslator } from "@polyengine/translator";
 import { stats } from "./sockets.ts";
 import { bridgeStats } from "./bridge.ts";
 import { webrtcStats } from "./webrtc-bridge.ts";
diff --git a/experiments/iroh-blobs/run.sh b/experiments/iroh-blobs/run.sh
index ac16e79..20d8f9c 100755
--- a/experiments/iroh-blobs/run.sh
+++ b/experiments/iroh-blobs/run.sh
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
+#!/usr/bin/env bash
 # Runs the iroh-blobs spike end to end: the pinned iroh-relay binary
-# (scripts/setup.sh), then the deltic host on stock Deno driving the
+# (scripts/setup.sh), then the polyengine host on stock Deno driving the
 # wasip2 guest — runtime-linked, no transpile step; the translator ships
-# in the pinned @deltic/translator package.
+# in the pinned @polyengine/translator package.
 # Reuses an already-running relay on 127.0.0.1:3340; kills only what it
 # started.
 set -euo pipefail
diff --git a/experiments/iroh-relay-ws/host/bridge.ts b/experiments/iroh-relay-ws/host/bridge.ts
index 307538c..fdc3eae 100644
--- a/experiments/iroh-relay-ws/host/bridge.ts
+++ b/experiments/iroh-relay-ws/host/bridge.ts
@@ -1,6 +1,6 @@
 // The websocket bridge: turns the guest's synthetic datagrams (see
 // iroh-relay's wasi `datagram_pipe.rs`) into real websocket connections
-// through the polymorph-websocket sibling's deltic host module — the
+// through the polymorph-websocket sibling's polyengine host module — the
 // same browser-first code that serves the WIT package's host half,
 // running here as a plain library over the standard `WebSocket` global.
 //
@@ -13,7 +13,7 @@
 // Connections are keyed by the guest socket that carries them (one relay
 // connection = one synthetic socket = one websocket).
 
-import { Websocket } from "../../../.deps/websocket/js/deltic/websocket.ts";
+import { Websocket } from "../../../.deps/websocket/js/polyengine/websocket.ts";
 import type { OutgoingDatagram, UdpSocket } from "./sockets.ts";
 import { pushDatagram, registerBridge } from "./sockets.ts";
 import { describeErr } from "./errors.ts";
diff --git a/experiments/iroh-relay-ws/host/browser.html b/experiments/iroh-relay-ws/host/browser.html
index 30818f1..524bd07 100644
--- a/experiments/iroh-relay-ws/host/browser.html
+++ b/experiments/iroh-relay-ws/host/browser.html
@@ -1,6 +1,6 @@
 <!doctype html>
 <!-- Browser harness for the iroh-relay-ws spike: the same sockets shim,
-     bridges, and deltic runtime as the Deno driver, runtime-linked in the
+     bridges, and polyengine runtime as the Deno driver, runtime-linked in the
      browser (JSPI). Serve from the repository root so the guest and envelope
      fetches resolve; driven by browser-test.mjs, which bundles
      dist/browser-entry.js first. -->
diff --git a/experiments/iroh-relay-ws/host/deno.json b/experiments/iroh-relay-ws/host/deno.json
index 6556733..4011568 100644
--- a/experiments/iroh-relay-ws/host/deno.json
+++ b/experiments/iroh-relay-ws/host/deno.json
@@ -1,19 +1,19 @@
 {
-  "//": "MODULE-IDENTITY CONSTRAINT: deltic's wasi package and the sibling deltic host modules (.deps/{websocket,webrtc}) import @deltic/runtime/embedder by bare specifier internally; this file maps that specifier ONCE for the whole module graph, so `instanceof ComponentException` holds across every boundary. This is the ONE deno config for all three experiments (iroh-relay-ws, iroh-blobs, ping-demo): the others pass --config pointing here. deltic arrives as exact-pinned JSR releases (caret-honest upstream: within a minor line releases stay compatible, breaking bumps the minor; per-commit `<next>-pre.g<hash>` prereleases exist between releases — pin exactly; @deltic/translator ships the translator wasm for the SAME commit); the version matches host-deltic/deno.json by repo convention (exam-deltic asserts it; see host-deltic/README.md, 'The pin'). minimumDependencyAge keeps Deno's default supply-chain gate for everything else while letting same-day @deltic publishes resolve. The npm mappings serve the webrtc module's bare specifiers under Deno; a browser build resolves the RTCPeerConnection global instead. compilerOptions.lib carries dom next to deno.ns so the browser entries (browser-entry.ts, ping-demo's demo.ts/overlay.ts) type-check in the same graph as the Deno drivers.",
+  "//": "MODULE-IDENTITY CONSTRAINT: polyengine's wasi package and the sibling polyengine host modules (.deps/{websocket,webrtc}) import @polyengine/runtime/embedder by bare specifier internally; this file maps that specifier ONCE for the whole module graph, so `instanceof ComponentException` holds across every boundary. This is the ONE deno config for all three experiments (iroh-relay-ws, iroh-blobs, ping-demo): the others pass --config pointing here. polyengine arrives as exact-pinned JSR releases (caret-honest upstream: within a minor line releases stay compatible, breaking bumps the minor; per-commit `<next>-pre.g<hash>` prereleases exist between releases — pin exactly; @polyengine/translator ships the translator wasm for the SAME commit); the version matches host-polyengine/deno.json by repo convention (exam-polyengine asserts it; see host-polyengine/README.md, 'The pin'). minimumDependencyAge keeps Deno's default supply-chain gate for everything else while letting same-day @polyengine publishes resolve. The npm mappings serve the webrtc module's bare specifiers under Deno; a browser build resolves the RTCPeerConnection global instead. compilerOptions.lib carries dom next to deno.ns so the browser entries (browser-entry.ts, ping-demo's demo.ts/overlay.ts) type-check in the same graph as the Deno drivers.",
   "nodeModulesDir": "auto",
   "minimumDependencyAge": {
     "age": "P1D",
-    "exclude": ["jsr:@deltic/*"]
+    "exclude": ["jsr:@polyengine/*"]
   },
   "compilerOptions": {
     "lib": ["dom", "dom.iterable", "dom.asynciterable", "deno.ns"]
   },
   "imports": {
-    "@deltic/runtime/embedder": "jsr:@deltic/runtime@0.2.0/embedder",
-    "@deltic/runtime/shim": "jsr:@deltic/runtime@0.2.0/shim",
-    "@deltic/translator": "jsr:@deltic/translator@0.2.0",
-    "@deltic/wasi": "jsr:@deltic/wasi@0.2.0",
-    "@deltic/wasi/io": "jsr:@deltic/wasi@0.2.0/io",
+    "@polyengine/runtime/embedder": "jsr:@polyengine/runtime@0.3.0/embedder",
+    "@polyengine/runtime/shim": "jsr:@polyengine/runtime@0.3.0/shim",
+    "@polyengine/translator": "jsr:@polyengine/translator@0.3.0",
+    "@polyengine/wasi": "jsr:@polyengine/wasi@0.3.0",
+    "@polyengine/wasi/io": "jsr:@polyengine/wasi@0.3.0/io",
     "node-datachannel": "npm:node-datachannel@0.32.3",
     "node-datachannel/polyfill": "npm:node-datachannel@0.32.3/polyfill",
     "werift": "npm:werift@0.22.2"
diff --git a/experiments/iroh-relay-ws/host/deno.lock b/experiments/iroh-relay-ws/host/deno.lock
index 48ae1a2..6a53f13 100644
--- a/experiments/iroh-relay-ws/host/deno.lock
+++ b/experiments/iroh-relay-ws/host/deno.lock
@@ -1,36 +1,36 @@
 {
   "version": "5",
   "specifiers": {
-    "jsr:@deltic/protocol@0.2": "0.2.0",
-    "jsr:@deltic/runtime@0.2": "0.2.0",
-    "jsr:@deltic/runtime@0.2.0": "0.2.0",
-    "jsr:@deltic/translator@0.2.0": "0.2.0",
-    "jsr:@deltic/wasi@0.2.0": "0.2.0",
+    "jsr:@polyengine/protocol@0.1": "0.1.0",
+    "jsr:@polyengine/runtime@0.3": "0.3.0",
+    "jsr:@polyengine/runtime@0.3.0": "0.3.0",
+    "jsr:@polyengine/translator@0.3.0": "0.3.0",
+    "jsr:@polyengine/wasi@0.3.0": "0.3.0",
     "npm:node-datachannel@0.32.3": "0.32.3",
     "npm:playwright@^1.62.1": "1.62.1",
     "npm:werift@0.22.2": "0.22.2"
   },
   "jsr": {
-    "@deltic/protocol@0.2.0": {
-      "integrity": "028be6a3623c5e910598aa7a199209b85e8931ae484ac7f6638d610ddb0e19fa"
+    "@polyengine/protocol@0.1.0": {
+      "integrity": "0c97f34166f22ba55e7b084148df96e47aebe47cd9dd13930057759c9161bb1c"
     },
-    "@deltic/runtime@0.2.0": {
-      "integrity": "cf8b0bdd9e6bc4488ba78cc91661103bfcbd78f5a5c4ff99132799618a9db4bb",
+    "@polyengine/runtime@0.3.0": {
+      "integrity": "97d7648c104dd0f08b4d10e1ed0117ab0cb5243db68c139f1f3df25755ed4e60",
       "dependencies": [
-        "jsr:@deltic/protocol"
+        "jsr:@polyengine/protocol"
       ]
     },
-    "@deltic/translator@0.2.0": {
-      "integrity": "8104b54e2acdccfd75f5ddc941d72b581e7defbbe31c05bbc66598d2df7a34f9",
+    "@polyengine/translator@0.3.0": {
+      "integrity": "1d9fcd09d360850bc08927ed1cf8124d50a0fed09ed8c80f354a6d3aedfcad25",
       "dependencies": [
-        "jsr:@deltic/runtime@0.2"
+        "jsr:@polyengine/runtime@0.3"
       ]
     },
-    "@deltic/wasi@0.2.0": {
-      "integrity": "82c76d4fda0a1c9238a91f8ebc7fdbac952a03aa06d4a2a820213df2654f5c24",
+    "@polyengine/wasi@0.3.0": {
+      "integrity": "991adfdd39f795f94bba91a523322b88d45ff42800669b5b472356676e3c97e7",
       "dependencies": [
-        "jsr:@deltic/protocol",
-        "jsr:@deltic/runtime@0.2"
+        "jsr:@polyengine/protocol",
+        "jsr:@polyengine/runtime@0.3"
       ]
     }
   },
@@ -60,8 +60,8 @@
     "@noble/hashes@1.8.0": {
       "integrity": "sha512-jCs9ldd7NwzpgXDIf6P3+NrHh9/sD6CQdxHyjQI+h/6rDNo88ypBxxz45UDuZHz9r3tNz7N/VInSVoVdtXEI4A=="
     },
-    "@peculiar/asn1-cms@2.8.0": {
-      "integrity": "sha512-NgekZOrSJFSBFLFoLfwePguAWAx7z1+f2TEsWFUMyiqqfntZ4+S/S5hzqME3q4pCA0iOsFKdwiQ35dwY24eVqA==",
+    "@peculiar/asn1-cms@2.9.4": {
+      "integrity": "sha512-cben7oxmQsUGZqotus7yt0srYdncOT6RNWcTQ77T2RFOXejYVYkXadrfePdRcrVpO9K95IRLKKglG2k38jKXuw==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -70,8 +70,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-csr@2.8.0": {
-      "integrity": "sha512-akbF8+uvleHs8sejNPQxwmVFuInAg6FMNHOwMILXfP518YfFJwdR3jr6oNUPOaEJfuEhn/vkNOCIT6ASUd4mbg==",
+    "@peculiar/asn1-csr@2.9.4": {
+      "integrity": "sha512-xd4YN4vpRjkDAQWVfZZkeu12IEND7DOpkqaHSIHxZl1uggUNa9Ju0QxY2jHvDAS9pP0zhRBytg8ifsnGo3V0jw==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -79,8 +79,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-ecc@2.8.0": {
-      "integrity": "sha512-ohwlk+u9Rv2NOAY1c6MfHj45ATVF8R1DUN/WCgABiRtLi2ZftlZWZX7KvpAbU8v9xPcmoILfELeEABj/rn18AQ==",
+    "@peculiar/asn1-ecc@2.9.4": {
+      "integrity": "sha512-JJXefFshRAuVAjWQo/39bkg1ywc1VaiO44S8RRC+Ykvf/u2KDmYffoDb0ZBPCR5uJy4AGKQhl8mX+Q8ShcWaXQ==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -88,8 +88,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-pfx@2.8.0": {
-      "integrity": "sha512-5yof1ytoB++RQtaFbqSUJ8pxDJtZT6vbVqZ8XoJ61ph7UjNVvfFwAilnCodqkNsAodpy13gDhoxZXw00pghnyg==",
+    "@peculiar/asn1-pfx@2.9.4": {
+      "integrity": "sha512-khuGzHTzNzk4GDlIBEILyIs6Lce0yn0ZBdoI9v93kmNncfZRhD+AQ5ODFqdhvoE8cMJF/JMTQ8yA+t1D14kqCw==",
       "dependencies": [
         "@peculiar/asn1-cms",
         "@peculiar/asn1-pkcs8",
@@ -99,8 +99,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-pkcs8@2.8.0": {
-      "integrity": "sha512-qAKXtLpBEw9LqhKpjw3ajZSXlBur+ipW+y2ivVBQAG6F6qRx94yO+1ZR4mvw+YaCfKSaOzLeYEzsPaBp4SJELA==",
+    "@peculiar/asn1-pkcs8@2.9.4": {
+      "integrity": "sha512-duRdotlUx9eDZe6QrQpQKl61RbWykCHBCkKayP8V8XdEFwlKHZ8qGGDMyS6Pye7OX7nLFttTTpRkJeet78ckwQ==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -108,8 +108,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-pkcs9@2.8.0": {
-      "integrity": "sha512-b5nDWCnkV60+cQ141D6sVVwK9nz64R5n3zSVnklGd+ECdkW2Ol3U1a6yYFlalpSOaD557yuJB64A+q42jG7lUQ==",
+    "@peculiar/asn1-pkcs9@2.9.4": {
+      "integrity": "sha512-kaL4cNxBpdQE2dKlyZBqz4ygCrwffO+8wfoxTEqM1Z8RadvCeELBRzcv0dzM8aY9azHMwODO5nxU65zXmhToOQ==",
       "dependencies": [
         "@peculiar/asn1-cms",
         "@peculiar/asn1-pfx",
@@ -121,8 +121,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-rsa@2.8.0": {
-      "integrity": "sha512-zHEUlCqB2mk7x2lxDwHHJy7hWZOPdGHVlsmITWKB5/PbQo61atbu9PJ/0r9dQNMwFzbKPXZ8uK8/91eUhRznSg==",
+    "@peculiar/asn1-rsa@2.9.4": {
+      "integrity": "sha512-pZ96eD1PptovcWQ/GSmuNFXd/7EQJNlKfDaNCyE2rx3W0v6QFelkzquVqRSRyyDXXCYD69ZXJDzZ8GhIiQzKoA==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -130,16 +130,16 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-schema@2.8.0": {
-      "integrity": "sha512-7YT0U/ze0tF2QOBbE15gKZwy5tvgGyLRiRHLzhlbOpf7BT032oBSd0haZqXn5W6l26WLlu3dyxzjM+2638/z2Q==",
+    "@peculiar/asn1-schema@2.9.4": {
+      "integrity": "sha512-GjzePcT9Iw8NzeOPf73iNS9xM+TBhd/FilAfP+RQGkTMQJTVWtytN3JHJACCjf/ABNau5S7mS3g+DcuxmRgYEg==",
       "dependencies": [
         "@peculiar/utils",
         "asn1js",
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-x509-attr@2.8.0": {
-      "integrity": "sha512-tHjkfS/qhMnmrlB2J9NhflQlQ7In3khO3CfmVrriOlpTeErY9ZIKOso1hQ5JQiyrJ7ShvqVPk7E5fQmbclkSKA==",
+    "@peculiar/asn1-x509-attr@2.9.4": {
+      "integrity": "sha512-ehQXbpQaQYycgu8OrvigwSPTFfVRcu0ECNYCWw+yzBp02Lw5paRqzzhUpfOgO2K38+WfFZuEz/0RPtam5g0OMg==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -147,8 +147,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-x509@2.8.0": {
-      "integrity": "sha512-N0CMuhWUzsWEVq6F1q9X6+VKUnWzSW+cSVg+aPaGGwDdbFoFWTYgin5MHwXgpWd6y9COMBxnfy/Qc+Xc7F0Zwg==",
+    "@peculiar/asn1-x509@2.9.4": {
+      "integrity": "sha512-CxhBo/RdEbMMob7T31ZdQjGuoyRFLVwrDzTn25bihzBasRg9kRm/0IxIPvhgQtcK/9dNcO1XQL2fuPugwELL0Q==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/utils",
@@ -325,8 +325,8 @@
     "lodash@4.18.1": {
       "integrity": "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q=="
     },
-    "mediabunny@1.53.0": {
-      "integrity": "sha512-RjWe9yJr9MPvb6kX4gSu54fZD2w1yf6RyCS0Jmgaml+fFSqEr7+XuASXoRxSqJxgc+wIe+7TujXWcyj3evJ3Bg==",
+    "mediabunny@1.55.1": {
+      "integrity": "sha512-JDdTEUOw9g6Ey8eWc2Ei63GmRGtGTJoE56SE7CHikwzS8i9xpsWcve4bEiUw47d4j49L3r7MXDFsH/5oZIhjBw==",
       "dependencies": [
         "@types/dom-mediacapture-transform",
         "@types/dom-webcodecs"
@@ -383,9 +383,6 @@
         "wrappy"
       ]
     },
-    "p-cancelable@2.1.1": {
-      "integrity": "sha512-BZOr3nRQHOntUjTrH8+Lh54smKHoHyur8We1V8DSMVrl5A2malOOwuJRnKRDjSnkoeBh4at6BwEnb5I7Jl31wg=="
-    },
     "playwright-core@1.62.1": {
       "integrity": "sha512-wPYSwEBJY9GHraISXqyqtx0na0LpO3XEX7jNDhntbex7tzUS7kLnZsOlFruFJB4Hi/rhDMjXGqHewDZ68nYZVw==",
       "bin": true
@@ -456,9 +453,6 @@
     "reflect-metadata@0.2.2": {
       "integrity": "sha512-urBwgfrvVP/eAyXx4hluJivBKzuEbSQs9rKWCrCkbSxNv8mxPcUZKeuoF3Uy4mJl3Lwprp6yy5/39VWigZ4K6Q=="
     },
-    "rx.mini@1.4.0": {
-      "integrity": "sha512-8w5cSc1mwNja7fl465DXOkVvIOkpvh2GW4jo31nAIvX4WTXCsRnKJGUfiDBzWtYRInEcHAUYIZfzusjIrea8gA=="
-    },
     "safe-buffer@5.2.1": {
       "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
     },
@@ -557,18 +551,11 @@
         "tweetnacl"
       ]
     },
-    "werift-ice@0.2.2": {
-      "integrity": "sha512-td52pHp+JmFnUn5jfDr/SSNO0dMCbknhuPdN1tFp9cfRj5jaktN63qnAdUuZC20QCC3ETWdsOthcm+RalHpFCQ==",
+    "werift-ice@0.2.3": {
+      "integrity": "sha512-k000fIaw8w2D4Xv5EvW6b5h4faJx8p4D8HPuDzRiGTx6UrLv2BuvUkC60LNqxlDf9o3zh90Hx1WZoHbhuw9keA==",
       "dependencies": [
-        "@shinyoshiaki/jspack",
-        "buffer-crc32",
         "debug",
-        "int64-buffer",
-        "ip",
-        "lodash",
-        "multicast-dns",
-        "p-cancelable",
-        "rx.mini"
+        "multicast-dns"
       ]
     },
     "werift-rtp@0.8.9": {
@@ -621,9 +608,9 @@
   },
   "workspace": {
     "dependencies": [
-      "jsr:@deltic/runtime@0.2.0",
-      "jsr:@deltic/translator@0.2.0",
-      "jsr:@deltic/wasi@0.2.0",
+      "jsr:@polyengine/runtime@0.3.0",
+      "jsr:@polyengine/translator@0.3.0",
+      "jsr:@polyengine/wasi@0.3.0",
       "npm:node-datachannel@0.32.3",
       "npm:werift@0.22.2"
     ],
diff --git a/experiments/iroh-relay-ws/host/errors.ts b/experiments/iroh-relay-ws/host/errors.ts
index 5ac5c15..98306be 100644
--- a/experiments/iroh-relay-ws/host/errors.ts
+++ b/experiments/iroh-relay-ws/host/errors.ts
@@ -1,8 +1,8 @@
-// Render an error for a log line, unwrapping deltic's branded
+// Render an error for a log line, unwrapping polyengine's branded
 // `ComponentException<{kind, value?}>` payloads (the sibling host modules
 // throw these).
 
-import { ComponentException } from "@deltic/runtime/embedder";
+import { ComponentException } from "@polyengine/runtime/embedder";
 
 export function describeErr(err: unknown): string {
   if (err instanceof ComponentException) {
diff --git a/experiments/iroh-relay-ws/host/harness.ts b/experiments/iroh-relay-ws/host/harness.ts
index b0062c7..51881a0 100644
--- a/experiments/iroh-relay-ws/host/harness.ts
+++ b/experiments/iroh-relay-ws/host/harness.ts
@@ -1,22 +1,22 @@
-// Shared host wiring for the upstream-iroh spikes under deltic: artifact
+// Shared host wiring for the upstream-iroh spikes under polyengine: artifact
 // translation, the WASI import record, and the guest `run` entry point.
 //
 // Platform-portable core: byte loading (filesystem vs fetch) stays in the
 // drivers (run.ts, browser-entry.ts); everything here uses standard
 // globals only.
 //
-// MODULE-IDENTITY CONSTRAINT (host-deltic/README.md "Module identity"):
-// deltic's wasi package and this package import `@deltic/runtime/embedder`
+// MODULE-IDENTITY CONSTRAINT (host-polyengine/README.md "Module identity"):
+// polyengine's wasi package and this package import `@polyengine/runtime/embedder`
 // by bare specifier; the `deno.json` next to this file maps that
 // specifier once for the whole module graph, so there is exactly one
 // `ComponentException` module instance and `instanceof` holds across every
 // boundary — including the branded errors sockets.ts throws.
 
-import type { ComponentArtifacts } from "@deltic/runtime/embedder";
-import { artifactsFromEnvelope, instantiate } from "@deltic/runtime/embedder";
-import type { Translator } from "@deltic/runtime/shim";
-import { wasi } from "@deltic/wasi";
-import { OutputStream } from "@deltic/wasi/io";
+import type { ComponentArtifacts } from "@polyengine/runtime/embedder";
+import { artifactsFromEnvelope, instantiate } from "@polyengine/runtime/embedder";
+import type { Translator } from "@polyengine/runtime/shim";
+import { wasi } from "@polyengine/wasi";
+import { OutputStream } from "@polyengine/wasi/io";
 import { syntheticNetImports } from "./sockets.ts";
 
 /** Reconstitute build-time-translated artifacts (embedder-api A4). */
@@ -50,7 +50,7 @@ export interface GuestOptions {
 }
 
 /**
- * The full import record for the spike guests: deltic's wasi()
+ * The full import record for the spike guests: polyengine's wasi()
  * baseline (whose A5 parking kernel serves poll/clock suspension), the
  * synthetic network fragment (sockets.ts), and stdio routed to the
  * console line-buffered.
@@ -71,7 +71,7 @@ export function guestImports(options: GuestOptions): Record<string, unknown> {
  *
  * `artifacts` is anything `instantiate` accepts (embedder-api A3): the
  * translated `ComponentArtifacts`, or `{ componentBytes, translator }`
- * with `@deltic/translator`'s instance for in-process translation. jspi
+ * with `@polyengine/translator`'s instance for in-process translation. jspi
  * mode is selected by the wasi package's own `suspending()` markers (the A5
  * kernel); no explicit option is needed.
  */
diff --git a/experiments/iroh-relay-ws/host/package.json b/experiments/iroh-relay-ws/host/package.json
index 51aa6f7..d64acd3 100644
--- a/experiments/iroh-relay-ws/host/package.json
+++ b/experiments/iroh-relay-ws/host/package.json
@@ -3,7 +3,7 @@
   "version": "0.0.1",
   "private": true,
   "type": "module",
-  "description": "Spike host harness deps: Playwright for the browser leg (the drivers themselves run on Deno under deltic).",
+  "description": "Spike host harness deps: Playwright for the browser leg (the drivers themselves run on Deno under polyengine).",
   "scripts": {
     "test:browser": "node browser-test.mjs"
   },
diff --git a/experiments/iroh-relay-ws/host/run.ts b/experiments/iroh-relay-ws/host/run.ts
index fc57ee1..8e22594 100644
--- a/experiments/iroh-relay-ws/host/run.ts
+++ b/experiments/iroh-relay-ws/host/run.ts
@@ -2,10 +2,10 @@
 // two-endpoint relay echo + WebRTC migration. The guest prints its own
 // results; this driver adds a watchdog and the shim/bridge counters.
 //
-// Runs on stock Deno; the translator is `@deltic/translator`'s packaged
+// Runs on stock Deno; the translator is `@polyengine/translator`'s packaged
 // asset, loaded through the module graph.
 
-import { defaultTranslator } from "@deltic/translator";
+import { defaultTranslator } from "@polyengine/translator";
 import { stats } from "./sockets.ts";
 import { bridgeStats } from "./bridge.ts";
 import { webrtcStats } from "./webrtc-bridge.ts";
diff --git a/experiments/iroh-relay-ws/host/sockets.ts b/experiments/iroh-relay-ws/host/sockets.ts
index 04caa0d..1628c51 100644
--- a/experiments/iroh-relay-ws/host/sockets.ts
+++ b/experiments/iroh-relay-ws/host/sockets.ts
@@ -1,5 +1,5 @@
-// The synthetic WASI network for the upstream-iroh spikes, in deltic's
-// embedder conventions (deltic contracts/embedder-api.md).
+// The synthetic WASI network for the upstream-iroh spikes, in polyengine's
+// embedder conventions (polyengine contracts/embedder-api.md).
 //
 // Descendant of the jco spike shim (which descended from the udp-wake
 // probe, PR #18): multiple synthetic UDP sockets — one per relay
@@ -7,7 +7,7 @@
 // to host-side bridges by well-known port (bridge.ts, webrtc-bridge.ts)
 // or by full synthetic destination address (the issue #26 overlay).
 //
-// Parking is deltic's, not this module's: the wasi package's kernel (embedder-api
+// Parking is polyengine's, not this module's: the wasi package's kernel (embedder-api
 // A5) serves `wasi:io/poll` and the clock subscriptions with real
 // suspension, and its `Pollable` is publicly constructible as the interop
 // seam — this module only mints `new Pollable(ready, wait)` over its
@@ -22,8 +22,8 @@
 // Environment-portable: standard globals only; works under Deno and in
 // browsers.
 
-import { ComponentException } from "@deltic/runtime/embedder";
-import { Pollable } from "@deltic/wasi/io";
+import { ComponentException } from "@polyengine/runtime/embedder";
+import { Pollable } from "@polyengine/wasi/io";
 
 // ---------------------------------------------------------------------------
 // instrumentation
@@ -330,7 +330,7 @@ export class ResolveAddressStream {
 
 /**
  * The synthetic-network provider fragment (track keys), spread next to
- * deltic's `wasi(...)`, whose A5 kernel serves `wasi:io/poll` and
+ * polyengine's `wasi(...)`, whose A5 kernel serves `wasi:io/poll` and
  * the clock subscriptions these sockets' pollables park under.
  */
 export function syntheticNetImports(): Record<string, unknown> {
diff --git a/experiments/iroh-relay-ws/host/translate.ts b/experiments/iroh-relay-ws/host/translate.ts
index 718ce4e..8674bd3 100644
--- a/experiments/iroh-relay-ws/host/translate.ts
+++ b/experiments/iroh-relay-ws/host/translate.ts
@@ -1,5 +1,5 @@
-// Build-time translation (deltic embedder-api A4): component in, envelope
-// out. The translator is `@deltic/translator`'s packaged asset — the same
+// Build-time translation (polyengine embedder-api A4): component in, envelope
+// out. The translator is `@polyengine/translator`'s packaged asset — the same
 // pinned release as the runtime, so the envelope's plan format matches
 // what the pages' `artifactsFromEnvelope` expects by construction.
 //
@@ -10,7 +10,7 @@
 //       translate.ts <component.wasm> <out.plan.json>
 
 import { dirname } from "node:path";
-import { defaultTranslator } from "@deltic/translator";
+import { defaultTranslator } from "@polyengine/translator";
 
 const [input, output] = Deno.args;
 if (!input || !output) {
diff --git a/experiments/iroh-relay-ws/host/webrtc-bridge.ts b/experiments/iroh-relay-ws/host/webrtc-bridge.ts
index 38e87b5..899aa28 100644
--- a/experiments/iroh-relay-ws/host/webrtc-bridge.ts
+++ b/experiments/iroh-relay-ws/host/webrtc-bridge.ts
@@ -1,6 +1,6 @@
 // The WebRTC overlay bridge: assigns each registered endpoint a synthetic
 // IP address, and carries datagrams for that address over real data
-// channels through the polymorph-webrtc-datachannels sibling's deltic
+// channels through the polymorph-webrtc-datachannels sibling's polyengine
 // host module (node-datachannel's W3C polyfill under Deno, the browser
 // global in a browser). The guest runs stock iroh IP transports; the
 // synthetic address enters iroh through `Endpoint::add_external_addr`,
@@ -30,7 +30,7 @@ import {
   DataChannelOptions,
   PeerConnection,
   PeerConnectionConfig,
-} from "../../../.deps/webrtc/deltic-impl/src/webrtc.ts";
+} from "../../../.deps/webrtc/polyengine-impl/src/webrtc.ts";
 import type { IpSocketAddress, OutgoingDatagram, UdpSocket } from "./sockets.ts";
 import {
   pushDatagram,
diff --git a/experiments/iroh-relay-ws/run.sh b/experiments/iroh-relay-ws/run.sh
index d192ec3..3a117f7 100755
--- a/experiments/iroh-relay-ws/run.sh
+++ b/experiments/iroh-relay-ws/run.sh
@@ -1,8 +1,9 @@
 #!/usr/bin/env bash
+#!/usr/bin/env bash
 # Runs the iroh-relay-ws spike end to end: the pinned iroh-relay binary
-# (scripts/setup.sh), then the deltic host on stock Deno driving the
+# (scripts/setup.sh), then the polyengine host on stock Deno driving the
 # wasip2 guest — runtime-linked, no transpile step; the translator ships
-# inside the pinned @deltic/translator package. Reuses an already-running
+# inside the pinned @polyengine/translator package. Reuses an already-running
 # relay on 127.0.0.1:3340; kills only what it started.
 set -euo pipefail
 cd "$(dirname "$0")"
diff --git a/experiments/ping-demo/build.sh b/experiments/ping-demo/build.sh
index c9d8977..d797efa 100755
--- a/experiments/ping-demo/build.sh
+++ b/experiments/ping-demo/build.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Builds the ping demo into web/site/: guest component (cargo), deltic
+# Builds the ping demo into web/site/: guest component (cargo), polyengine
 # build-time translation (A4 envelope), and the bundled page — the site
 # must be self-contained (GitHub Pages, and COEP blocks anything
 # cross-origin without CORP anyway). Runtime host layer (sockets, bridge,
@@ -17,9 +17,9 @@ GUEST_WASM=guest/target/wasm32-wasip2/release/ping-demo-guest.wasm
 rm -rf "$SITE"
 mkdir -p "$SITE"
 
-# Build-time translation (deltic embedder-api A4): produces the
+# Build-time translation (polyengine embedder-api A4): produces the
 # component-plus-plan envelope the page fetches at runtime. The
-# translator is @deltic/translator's packaged asset at the same pinned
+# translator is @polyengine/translator's packaged asset at the same pinned
 # release as the runtime the bundle carries, so the envelope's plan
 # format matches by construction.
 deno run --config "$SPIKE_HOST/deno.json" --frozen --allow-read --allow-write \
diff --git a/experiments/ping-demo/web/demo.ts b/experiments/ping-demo/web/demo.ts
index e4a7618..79cb0f2 100644
--- a/experiments/ping-demo/web/demo.ts
+++ b/experiments/ping-demo/web/demo.ts
@@ -506,7 +506,7 @@ try {
     setStatus("error", `guest failed: ${err}`)
   );
 } catch (err) {
-  // Feature-probe only: deltic's jspi types are module-scoped (no global
+  // Feature-probe only: polyengine's jspi types are module-scoped (no global
   // WebAssembly augmentation), so read the property untyped.
   const jspi = typeof (WebAssembly as { Suspending?: unknown }).Suspending === "function";
   setStatus(
diff --git a/experiments/ping-demo/web/overlay.ts b/experiments/ping-demo/web/overlay.ts
index 8be6d25..5905ff7 100644
--- a/experiments/ping-demo/web/overlay.ts
+++ b/experiments/ping-demo/web/overlay.ts
@@ -23,7 +23,7 @@ import {
   DataChannelOptions,
   PeerConnection,
   PeerConnectionConfig,
-} from "../../../.deps/webrtc/deltic-impl/src/webrtc.ts";
+} from "../../../.deps/webrtc/polyengine-impl/src/webrtc.ts";
 import type { IpSocketAddress, OutgoingDatagram, UdpSocket } from "../../iroh-relay-ws/host/sockets.ts";
 import {
   pushDatagram,
diff --git a/host-deltic/deno.json b/host-deltic/deno.json
deleted file mode 100644
index 52bab74..0000000
--- a/host-deltic/deno.json
+++ /dev/null
@@ -1,27 +0,0 @@
-{
-  "name": "@polymorph/iroh",
-  "version": "0.2.0",
-  "license": "Apache-2.0",
-  "exports": { ".": "./src/mod.ts" },
-  "//": "MODULE-IDENTITY CONSTRAINT: deltic's wasi package and the sibling @polymorph host modules import @deltic/runtime/embedder by bare specifier internally. Every dependency constraint here is a caret range on one minor line (published-package convention, deltic's own precedent), so a consumer's resolver dedupes the whole family onto ONE @deltic/runtime module instance and `instanceof ComponentException` holds across every boundary; deno.lock carries integrity, --frozen enforced in the repo. The exam gate (justfile: exam-deltic) asserts the repo's deno.locks resolve to one @deltic version and pipes the resolved graph through scripts/deltic-identity-gate.ts (one runtime module, no raw URLs). src/endpoint_component.ts is GENERATED by `just build-components` (gitignored; the publish workflow regenerates it) — the packaged endpoint component, base64 in the module graph. minimumDependencyAge keeps Deno's default supply-chain gate for everything else while letting same-day @deltic/@polymorph publishes resolve.",
-  "nodeModulesDir": "auto",
-  "minimumDependencyAge": {
-    "age": "P1D",
-    "exclude": ["jsr:@deltic/*", "jsr:@polymorph/*"]
-  },
-  "imports": {
-    "@deltic/runtime/embedder": "jsr:@deltic/runtime@^0.2.0/embedder",
-    "@deltic/translator": "jsr:@deltic/translator@^0.2.0",
-    "@deltic/wasi": "jsr:@deltic/wasi@^0.2.0",
-    "@polymorph/webcrypto": "jsr:@polymorph/webcrypto@^0.2.0",
-    "@polymorph/websocket": "jsr:@polymorph/websocket@^0.2.0",
-    "@polymorph/webrtc-datachannels": "jsr:@polymorph/webrtc-datachannels@^0.2.0"
-  },
-  "publish": {
-    "exclude": ["src/run-endpoint.ts", "src/scenario.ts", "src/repo.ts", "!src/endpoint_component.ts"]
-  },
-  "tasks": {
-    "check": "deno check src",
-    "exam": "deno run -A src/run-endpoint.ts"
-  }
-}
diff --git a/host-deltic/README.md b/host-polyengine/README.md
similarity index 69%
rename from host-deltic/README.md
rename to host-polyengine/README.md
index 2060878..8abd97c 100644
--- a/host-deltic/README.md
+++ b/host-polyengine/README.md
@@ -1,15 +1,15 @@
-# `host-deltic` — the deltic host: the endpoint surface on stock Deno
+# `host-polyengine` — the polyengine host: the endpoint surface on stock Deno
 
 The endpoint component runtime-linked under
-[deltic](https://github.com/lann/deltic): no transpile step, no generated
+[polyengine](https://github.com/polymorph-components/polyengine): no transpile step, no generated
 tree, no engine flag. This is the JS-host leg of the endpoint surface
 that issue #10 blocked under jco — the detached pump task holding
-in-flight relay imports across export calls is exactly the shape deltic's
+in-flight relay imports across export calls is exactly the shape polyengine's
 scheduler serves. The jco host (`host-jco/`) ran this repository's demos
 alongside this exam until it retired in favor of this host (see git
 history); this is now the repository's only JS host.
 
-The sibling repositories' own deltic host modules supply the non-WASI
+The sibling repositories' own polyengine host modules supply the non-WASI
 imports, consumed from JSR by caret constraint (the lockfile pins the
 resolved versions):
 
@@ -19,17 +19,17 @@ resolved versions):
 | `polymorph:webrtc-datachannels/connections` | `jsr:@polymorph/webrtc-datachannels` |
 | `polymorph:webcrypto/*` | `jsr:@polymorph/webcrypto` |
 | `wasi:sockets/types` | `src/sockets.ts` — fail-on-call stubs (the browser profile; see its header) |
-| everything WASI | deltic's `@deltic/wasi` package |
+| everything WASI | polyengine's `@polyengine/wasi` package |
 
 ## The exam
 
 ```sh
-just exam-deltic
+just exam-polyengine
 ```
 
 builds the endpoint component and the stock relay, installs the leg's
 pinned module graph + the `node-datachannel` addon
-(`just deltic-setup`, idempotent), fetches the sha256-pinned translator
+(`just polyengine-setup`, idempotent), fetches the sha256-pinned translator
 release asset, and runs `src/run-endpoint.ts` — five scenarios:
 
 1. **bind + identity** — `identity-generate` → `new
@@ -53,38 +53,38 @@ borrowed`); panic counts are reported per attempt. The hazard is the
 guest's and is latent on every host.
 ## The pin
 
-deltic and the sibling host modules arrive from JSR under caret
-constraints on one minor line (`jsr:@deltic/*@^0.1.0`,
-`jsr:@polymorph/*@^0.1.0`); `deno.lock` pins the resolved versions and
-carries integrity, enforced with `--frozen`. `@deltic/translator` ships
+polyengine and the sibling host modules arrive from JSR under caret
+constraints on one minor line (`jsr:@polyengine/*@^0.3.0`,
+`jsr:@polymorph/*@^0.3.0`); `deno.lock` pins the resolved versions and
+carries integrity, enforced with `--frozen`. `@polyengine/translator` ships
 the translator wasm for the same commit as the runtime, so the
 plan-format coupling between runtime and translator is self-consistent
 inside each graph by construction — there is no separate asset pin and
-no fetch step. `minimumDependencyAge` exempts `jsr:@deltic/*` and
+no fetch step. `minimumDependencyAge` exempts `jsr:@polyengine/*` and
 `jsr:@polymorph/*` from Deno's default 24-hour supply-chain gate so
 same-day releases resolve; everything else keeps the default.
 `experiments/iroh-relay-ws/host/deno.json` (the upstream-iroh spikes'
-shared config) exact-pins the same deltic packages; the `exam-deltic`
-recipe asserts both `deno.lock`s resolve to one deltic version.
+shared config) exact-pins the same polyengine packages; the `exam-polyengine`
+recipe asserts both `deno.lock`s resolve to one polyengine version.
 
 To bump: adjust the constraints (a new minor line) or just delete the
-`deno.lock` files (within the line), re-run `just deltic-setup` and
+`deno.lock` files (within the line), re-run `just polyengine-setup` and
 `deno install --allow-scripts=npm:node-datachannel` in
 `experiments/iroh-relay-ws/host/` to regenerate them, and commit the
 diff.
 
 ## Module identity
 
-deltic's wasi package and the sibling host modules import
-`@deltic/runtime/embedder` by bare specifier internally, each resolved
+polyengine's wasi package and the sibling host modules import
+`@polyengine/runtime/embedder` by bare specifier internally, each resolved
 through its own package manifest. Identity rests on every manifest in
 the graph carrying a constraint the resolver can satisfy with ONE
-`@deltic/runtime` version, so it dedupes to one
+`@polyengine/runtime` version, so it dedupes to one
 `ComponentException`/`Stream` module instance — caret constraints on
 one minor line guarantee that; an exact pin outside every other
 manifest's range (or a raw-URL embedder module) splits the graph, and
 `instanceof ComponentException` silently stops holding across that
-boundary. Two gates in `just exam-deltic` keep it true: the lock check
-(this repo's `deno.lock`s resolve to one deltic version) and
-`scripts/deltic-identity-gate.ts` (the RESOLVED run-endpoint graph
-carries exactly one `@deltic/runtime` and no raw URLs).
+boundary. Two gates in `just exam-polyengine` keep it true: the lock check
+(this repo's `deno.lock`s resolve to one polyengine version) and
+`scripts/polyengine-identity-gate.ts` (the RESOLVED run-endpoint graph
+carries exactly one `@polyengine/runtime` and no raw URLs).
diff --git a/host-polyengine/deno.json b/host-polyengine/deno.json
new file mode 100644
index 0000000..e059fda
--- /dev/null
+++ b/host-polyengine/deno.json
@@ -0,0 +1,27 @@
+{
+  "name": "@polymorph/iroh",
+  "version": "0.3.0",
+  "license": "Apache-2.0",
+  "exports": { ".": "./src/mod.ts" },
+  "//": "MODULE-IDENTITY CONSTRAINT: polyengine's wasi package and the sibling @polymorph host modules import @polyengine/runtime/embedder by bare specifier internally. Every dependency constraint here is a caret range on one minor line (published-package convention, polyengine's own precedent), so a consumer's resolver dedupes the whole family onto ONE @polyengine/runtime module instance and `instanceof ComponentException` holds across every boundary; deno.lock carries integrity, --frozen enforced in the repo. The exam gate (justfile: exam-polyengine) asserts the repo's deno.locks resolve to one @polyengine version and pipes the resolved graph through scripts/polyengine-identity-gate.ts (one runtime module, no raw URLs). src/endpoint_component.ts is GENERATED by `just build-components` (gitignored; the publish workflow regenerates it) — the packaged endpoint component, base64 in the module graph. minimumDependencyAge keeps Deno's default supply-chain gate for everything else while letting same-day @polyengine/@polymorph publishes resolve.",
+  "nodeModulesDir": "auto",
+  "minimumDependencyAge": {
+    "age": "P1D",
+    "exclude": ["jsr:@polyengine/*", "jsr:@polymorph/*"]
+  },
+  "imports": {
+    "@polyengine/runtime/embedder": "jsr:@polyengine/runtime@^0.3.0/embedder",
+    "@polyengine/translator": "jsr:@polyengine/translator@^0.3.0",
+    "@polyengine/wasi": "jsr:@polyengine/wasi@^0.3.0",
+    "@polymorph/webcrypto": "jsr:@polymorph/webcrypto@^0.3.0",
+    "@polymorph/websocket": "jsr:@polymorph/websocket@^0.3.0",
+    "@polymorph/webrtc-datachannels": "jsr:@polymorph/webrtc-datachannels@^0.3.0"
+  },
+  "publish": {
+    "exclude": ["src/run-endpoint.ts", "src/scenario.ts", "src/repo.ts", "!src/endpoint_component.ts"]
+  },
+  "tasks": {
+    "check": "deno check src",
+    "exam": "deno run -A src/run-endpoint.ts"
+  }
+}
diff --git a/host-deltic/deno.lock b/host-polyengine/deno.lock
similarity index 82%
rename from host-deltic/deno.lock
rename to host-polyengine/deno.lock
index 2b2ec45..c14c9e7 100644
--- a/host-deltic/deno.lock
+++ b/host-polyengine/deno.lock
@@ -1,57 +1,57 @@
 {
   "version": "5",
   "specifiers": {
-    "jsr:@deltic/protocol@0.2": "0.2.0",
-    "jsr:@deltic/runtime@0.2": "0.2.0",
-    "jsr:@deltic/translator@0.2": "0.2.0",
-    "jsr:@deltic/wasi@0.2": "0.2.0",
-    "jsr:@polymorph/webcrypto@0.2": "0.2.0",
-    "jsr:@polymorph/webrtc-datachannels@0.2": "0.2.0",
-    "jsr:@polymorph/websocket@0.2": "0.2.0",
+    "jsr:@polyengine/protocol@0.1": "0.1.0",
+    "jsr:@polyengine/runtime@0.3": "0.3.0",
+    "jsr:@polyengine/translator@0.3": "0.3.0",
+    "jsr:@polyengine/wasi@0.3": "0.3.0",
+    "jsr:@polymorph/webcrypto@0.3": "0.3.0",
+    "jsr:@polymorph/webrtc-datachannels@0.3": "0.3.0",
+    "jsr:@polymorph/websocket@0.3": "0.3.0",
     "npm:node-datachannel@0.32.3": "0.32.3",
     "npm:werift@0.22.2": "0.22.2"
   },
   "jsr": {
-    "@deltic/protocol@0.2.0": {
-      "integrity": "028be6a3623c5e910598aa7a199209b85e8931ae484ac7f6638d610ddb0e19fa"
+    "@polyengine/protocol@0.1.0": {
+      "integrity": "0c97f34166f22ba55e7b084148df96e47aebe47cd9dd13930057759c9161bb1c"
     },
-    "@deltic/runtime@0.2.0": {
-      "integrity": "cf8b0bdd9e6bc4488ba78cc91661103bfcbd78f5a5c4ff99132799618a9db4bb",
+    "@polyengine/runtime@0.3.0": {
+      "integrity": "97d7648c104dd0f08b4d10e1ed0117ab0cb5243db68c139f1f3df25755ed4e60",
       "dependencies": [
-        "jsr:@deltic/protocol"
+        "jsr:@polyengine/protocol"
       ]
     },
-    "@deltic/translator@0.2.0": {
-      "integrity": "8104b54e2acdccfd75f5ddc941d72b581e7defbbe31c05bbc66598d2df7a34f9",
+    "@polyengine/translator@0.3.0": {
+      "integrity": "1d9fcd09d360850bc08927ed1cf8124d50a0fed09ed8c80f354a6d3aedfcad25",
       "dependencies": [
-        "jsr:@deltic/runtime"
+        "jsr:@polyengine/runtime"
       ]
     },
-    "@deltic/wasi@0.2.0": {
-      "integrity": "82c76d4fda0a1c9238a91f8ebc7fdbac952a03aa06d4a2a820213df2654f5c24",
+    "@polyengine/wasi@0.3.0": {
+      "integrity": "991adfdd39f795f94bba91a523322b88d45ff42800669b5b472356676e3c97e7",
       "dependencies": [
-        "jsr:@deltic/protocol",
-        "jsr:@deltic/runtime"
+        "jsr:@polyengine/protocol",
+        "jsr:@polyengine/runtime"
       ]
     },
-    "@polymorph/webcrypto@0.2.0": {
-      "integrity": "96040c9d662f6698ba9aba944cba461a43d4b71898abd24e3923044d1095f53a",
+    "@polymorph/webcrypto@0.3.0": {
+      "integrity": "0708409c1f36c091da7c60ee62db6416f8968c92acc92f8a192e9e9ee55f2569",
       "dependencies": [
-        "jsr:@deltic/runtime"
+        "jsr:@polyengine/runtime"
       ]
     },
-    "@polymorph/webrtc-datachannels@0.2.0": {
-      "integrity": "85595bb9ad880dff8ae16f595de6e68ce1097ed2c0941ab95ee4a87afb89f8b3",
+    "@polymorph/webrtc-datachannels@0.3.0": {
+      "integrity": "576bcbe4b1053e7d27ac9f8b2d2f61e979987a749b226cc09db328f837b32675",
       "dependencies": [
-        "jsr:@deltic/runtime",
+        "jsr:@polyengine/runtime",
         "npm:node-datachannel",
         "npm:werift"
       ]
     },
-    "@polymorph/websocket@0.2.0": {
-      "integrity": "c8c0e03aa307c529911d0d4c03a2739f251c8278bddf1e7e0e57fda01bf258cb",
+    "@polymorph/websocket@0.3.0": {
+      "integrity": "23c92ed2ccda31ca66cad1ac9cbcf87473ccac7ae9a2b82fcb3486d5af97bbcd",
       "dependencies": [
-        "jsr:@deltic/runtime"
+        "jsr:@polyengine/runtime"
       ]
     }
   },
@@ -81,8 +81,8 @@
     "@noble/hashes@1.8.0": {
       "integrity": "sha512-jCs9ldd7NwzpgXDIf6P3+NrHh9/sD6CQdxHyjQI+h/6rDNo88ypBxxz45UDuZHz9r3tNz7N/VInSVoVdtXEI4A=="
     },
-    "@peculiar/asn1-cms@2.8.0": {
-      "integrity": "sha512-NgekZOrSJFSBFLFoLfwePguAWAx7z1+f2TEsWFUMyiqqfntZ4+S/S5hzqME3q4pCA0iOsFKdwiQ35dwY24eVqA==",
+    "@peculiar/asn1-cms@2.9.4": {
+      "integrity": "sha512-cben7oxmQsUGZqotus7yt0srYdncOT6RNWcTQ77T2RFOXejYVYkXadrfePdRcrVpO9K95IRLKKglG2k38jKXuw==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -91,8 +91,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-csr@2.8.0": {
-      "integrity": "sha512-akbF8+uvleHs8sejNPQxwmVFuInAg6FMNHOwMILXfP518YfFJwdR3jr6oNUPOaEJfuEhn/vkNOCIT6ASUd4mbg==",
+    "@peculiar/asn1-csr@2.9.4": {
+      "integrity": "sha512-xd4YN4vpRjkDAQWVfZZkeu12IEND7DOpkqaHSIHxZl1uggUNa9Ju0QxY2jHvDAS9pP0zhRBytg8ifsnGo3V0jw==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -100,8 +100,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-ecc@2.8.0": {
-      "integrity": "sha512-ohwlk+u9Rv2NOAY1c6MfHj45ATVF8R1DUN/WCgABiRtLi2ZftlZWZX7KvpAbU8v9xPcmoILfELeEABj/rn18AQ==",
+    "@peculiar/asn1-ecc@2.9.4": {
+      "integrity": "sha512-JJXefFshRAuVAjWQo/39bkg1ywc1VaiO44S8RRC+Ykvf/u2KDmYffoDb0ZBPCR5uJy4AGKQhl8mX+Q8ShcWaXQ==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -109,8 +109,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-pfx@2.8.0": {
-      "integrity": "sha512-5yof1ytoB++RQtaFbqSUJ8pxDJtZT6vbVqZ8XoJ61ph7UjNVvfFwAilnCodqkNsAodpy13gDhoxZXw00pghnyg==",
+    "@peculiar/asn1-pfx@2.9.4": {
+      "integrity": "sha512-khuGzHTzNzk4GDlIBEILyIs6Lce0yn0ZBdoI9v93kmNncfZRhD+AQ5ODFqdhvoE8cMJF/JMTQ8yA+t1D14kqCw==",
       "dependencies": [
         "@peculiar/asn1-cms",
         "@peculiar/asn1-pkcs8",
@@ -120,8 +120,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-pkcs8@2.8.0": {
-      "integrity": "sha512-qAKXtLpBEw9LqhKpjw3ajZSXlBur+ipW+y2ivVBQAG6F6qRx94yO+1ZR4mvw+YaCfKSaOzLeYEzsPaBp4SJELA==",
+    "@peculiar/asn1-pkcs8@2.9.4": {
+      "integrity": "sha512-duRdotlUx9eDZe6QrQpQKl61RbWykCHBCkKayP8V8XdEFwlKHZ8qGGDMyS6Pye7OX7nLFttTTpRkJeet78ckwQ==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -129,8 +129,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-pkcs9@2.8.0": {
-      "integrity": "sha512-b5nDWCnkV60+cQ141D6sVVwK9nz64R5n3zSVnklGd+ECdkW2Ol3U1a6yYFlalpSOaD557yuJB64A+q42jG7lUQ==",
+    "@peculiar/asn1-pkcs9@2.9.4": {
+      "integrity": "sha512-kaL4cNxBpdQE2dKlyZBqz4ygCrwffO+8wfoxTEqM1Z8RadvCeELBRzcv0dzM8aY9azHMwODO5nxU65zXmhToOQ==",
       "dependencies": [
         "@peculiar/asn1-cms",
         "@peculiar/asn1-pfx",
@@ -142,8 +142,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-rsa@2.8.0": {
-      "integrity": "sha512-zHEUlCqB2mk7x2lxDwHHJy7hWZOPdGHVlsmITWKB5/PbQo61atbu9PJ/0r9dQNMwFzbKPXZ8uK8/91eUhRznSg==",
+    "@peculiar/asn1-rsa@2.9.4": {
+      "integrity": "sha512-pZ96eD1PptovcWQ/GSmuNFXd/7EQJNlKfDaNCyE2rx3W0v6QFelkzquVqRSRyyDXXCYD69ZXJDzZ8GhIiQzKoA==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -151,16 +151,16 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-schema@2.8.0": {
-      "integrity": "sha512-7YT0U/ze0tF2QOBbE15gKZwy5tvgGyLRiRHLzhlbOpf7BT032oBSd0haZqXn5W6l26WLlu3dyxzjM+2638/z2Q==",
+    "@peculiar/asn1-schema@2.9.4": {
+      "integrity": "sha512-GjzePcT9Iw8NzeOPf73iNS9xM+TBhd/FilAfP+RQGkTMQJTVWtytN3JHJACCjf/ABNau5S7mS3g+DcuxmRgYEg==",
       "dependencies": [
         "@peculiar/utils",
         "asn1js",
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-x509-attr@2.8.0": {
-      "integrity": "sha512-tHjkfS/qhMnmrlB2J9NhflQlQ7In3khO3CfmVrriOlpTeErY9ZIKOso1hQ5JQiyrJ7ShvqVPk7E5fQmbclkSKA==",
+    "@peculiar/asn1-x509-attr@2.9.4": {
+      "integrity": "sha512-ehQXbpQaQYycgu8OrvigwSPTFfVRcu0ECNYCWw+yzBp02Lw5paRqzzhUpfOgO2K38+WfFZuEz/0RPtam5g0OMg==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/asn1-x509",
@@ -168,8 +168,8 @@
         "tslib@2.8.1"
       ]
     },
-    "@peculiar/asn1-x509@2.8.0": {
-      "integrity": "sha512-N0CMuhWUzsWEVq6F1q9X6+VKUnWzSW+cSVg+aPaGGwDdbFoFWTYgin5MHwXgpWd6y9COMBxnfy/Qc+Xc7F0Zwg==",
+    "@peculiar/asn1-x509@2.9.4": {
+      "integrity": "sha512-CxhBo/RdEbMMob7T31ZdQjGuoyRFLVwrDzTn25bihzBasRg9kRm/0IxIPvhgQtcK/9dNcO1XQL2fuPugwELL0Q==",
       "dependencies": [
         "@peculiar/asn1-schema",
         "@peculiar/utils",
@@ -341,8 +341,8 @@
     "lodash@4.18.1": {
       "integrity": "sha512-dMInicTPVE8d1e5otfwmmjlxkZoUpiVLwyeTdUsi/Caj/gfzzblBcCE5sRHV/AsjuCmxWrte2TNGSYuCeCq+0Q=="
     },
-    "mediabunny@1.53.0": {
-      "integrity": "sha512-RjWe9yJr9MPvb6kX4gSu54fZD2w1yf6RyCS0Jmgaml+fFSqEr7+XuASXoRxSqJxgc+wIe+7TujXWcyj3evJ3Bg==",
+    "mediabunny@1.55.1": {
+      "integrity": "sha512-JDdTEUOw9g6Ey8eWc2Ei63GmRGtGTJoE56SE7CHikwzS8i9xpsWcve4bEiUw47d4j49L3r7MXDFsH/5oZIhjBw==",
       "dependencies": [
         "@types/dom-mediacapture-transform",
         "@types/dom-webcodecs"
@@ -399,9 +399,6 @@
         "wrappy"
       ]
     },
-    "p-cancelable@2.1.1": {
-      "integrity": "sha512-BZOr3nRQHOntUjTrH8+Lh54smKHoHyur8We1V8DSMVrl5A2malOOwuJRnKRDjSnkoeBh4at6BwEnb5I7Jl31wg=="
-    },
     "prebuild-install@7.1.3": {
       "integrity": "sha512-8Mf2cbV7x1cXPUILADGI3wuhfqWvtiLA1iclTDbFRZkgRQS0NqsPZphna9V+HyTEadheuPmjaJMsbzKQFOzLug==",
       "dependencies": [
@@ -458,9 +455,6 @@
     "reflect-metadata@0.2.2": {
       "integrity": "sha512-urBwgfrvVP/eAyXx4hluJivBKzuEbSQs9rKWCrCkbSxNv8mxPcUZKeuoF3Uy4mJl3Lwprp6yy5/39VWigZ4K6Q=="
     },
-    "rx.mini@1.4.0": {
-      "integrity": "sha512-8w5cSc1mwNja7fl465DXOkVvIOkpvh2GW4jo31nAIvX4WTXCsRnKJGUfiDBzWtYRInEcHAUYIZfzusjIrea8gA=="
-    },
     "safe-buffer@5.2.1": {
       "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
     },
@@ -559,18 +553,11 @@
         "tweetnacl"
       ]
     },
-    "werift-ice@0.2.2": {
-      "integrity": "sha512-td52pHp+JmFnUn5jfDr/SSNO0dMCbknhuPdN1tFp9cfRj5jaktN63qnAdUuZC20QCC3ETWdsOthcm+RalHpFCQ==",
+    "werift-ice@0.2.3": {
+      "integrity": "sha512-k000fIaw8w2D4Xv5EvW6b5h4faJx8p4D8HPuDzRiGTx6UrLv2BuvUkC60LNqxlDf9o3zh90Hx1WZoHbhuw9keA==",
       "dependencies": [
-        "@shinyoshiaki/jspack",
-        "buffer-crc32",
         "debug",
-        "int64-buffer",
-        "ip",
-        "lodash",
-        "multicast-dns",
-        "p-cancelable",
-        "rx.mini"
+        "multicast-dns"
       ]
     },
     "werift-rtp@0.8.9": {
@@ -623,12 +610,12 @@
   },
   "workspace": {
     "dependencies": [
-      "jsr:@deltic/runtime@0.2",
-      "jsr:@deltic/translator@0.2",
-      "jsr:@deltic/wasi@0.2",
-      "jsr:@polymorph/webcrypto@0.2",
-      "jsr:@polymorph/webrtc-datachannels@0.2",
-      "jsr:@polymorph/websocket@0.2"
+      "jsr:@polyengine/runtime@0.3",
+      "jsr:@polyengine/translator@0.3",
+      "jsr:@polyengine/wasi@0.3",
+      "jsr:@polymorph/webcrypto@0.3",
+      "jsr:@polymorph/webrtc-datachannels@0.3",
+      "jsr:@polymorph/websocket@0.3"
     ]
   }
 }
diff --git a/host-deltic/src/harness.ts b/host-polyengine/src/harness.ts
similarity index 92%
rename from host-deltic/src/harness.ts
rename to host-polyengine/src/harness.ts
index bc00c90..c6b467e 100644
--- a/host-deltic/src/harness.ts
+++ b/host-polyengine/src/harness.ts
@@ -4,19 +4,19 @@
 // Everything here is host wiring; the exam scenarios in `run-endpoint.ts`
 // (repo-internal) carry the verdicts. `bindEndpoint(...)` mirrors the jco
 // host's retired `iroh.Endpoint.bind(...)` driving shape over
-// `instantiate` + the deltic embedder facade.
+// `instantiate` + the polyengine embedder facade.
 //
-// MODULE-IDENTITY CONSTRAINT: deltic's wasi package and the sibling host
-// modules import `@deltic/runtime/embedder` by bare specifier internally;
+// MODULE-IDENTITY CONSTRAINT: polyengine's wasi package and the sibling host
+// modules import `@polyengine/runtime/embedder` by bare specifier internally;
 // this package's `deno.json` and the sibling packages' manifests all
-// carry caret constraints on one `@deltic/runtime` minor line, so a
+// carry caret constraints on one `@polyengine/runtime` minor line, so a
 // consumer's resolver dedupes them onto one module instance and
 // `instanceof ComponentException`/`Stream` holds across every boundary.
 
-import { defaultTranslator } from "@deltic/translator";
-import type { ComponentArtifacts } from "@deltic/runtime/embedder";
-import { instantiate, ComponentException } from "@deltic/runtime/embedder";
-import { wasi } from "@deltic/wasi";
+import { defaultTranslator } from "@polyengine/translator";
+import type { ComponentArtifacts } from "@polyengine/runtime/embedder";
+import { instantiate, ComponentException } from "@polyengine/runtime/embedder";
+import { wasi } from "@polyengine/wasi";
 import { webcryptoImports } from "@polymorph/webcrypto";
 import { websocketImports } from "@polymorph/websocket";
 import { webrtcImports } from "@polymorph/webrtc-datachannels";
@@ -63,7 +63,7 @@ async function translate(bytes: Uint8Array): Promise<ComponentArtifacts> {
  * permission — but the multi-MiB module evaluates only when the packaged
  * default is actually used.
  *
- * The translator is `@deltic/translator`'s packaged asset — the same
+ * The translator is `@polyengine/translator`'s packaged asset — the same
  * pinned release as the runtime, loaded through the module graph
  * (permission-free on Deno), so there is no fetch step and no
  * plan-format skew to guard against.
@@ -111,7 +111,7 @@ export interface EndpointInstance {
 }
 
 /**
- * Stand up one component instance of the endpoint, with the sibling deltic
+ * Stand up one component instance of the endpoint, with the sibling polyengine
  * host modules supplying every non-WASI import.
  *
  * Import fragments are built FRESH per instance: the host modules' resource
diff --git a/host-deltic/src/mod.ts b/host-polyengine/src/mod.ts
similarity index 90%
rename from host-deltic/src/mod.ts
rename to host-polyengine/src/mod.ts
index 8c35adb..484a8ca 100644
--- a/host-deltic/src/mod.ts
+++ b/host-polyengine/src/mod.ts
@@ -1,9 +1,9 @@
 /**
  * @polymorph/iroh — the iroh endpoint as a WebAssembly component,
- * runtime-linked under deltic.
+ * runtime-linked under polyengine.
  *
  * `newEndpointInstance()` stands up one endpoint instance over the sibling
- * `@polymorph` deltic host modules — webcrypto (identity keys), websocket
+ * `@polymorph` polyengine host modules — webcrypto (identity keys), websocket
  * (relay transport), webrtc-datachannels (direct browser paths) — plus a
  * browser-profile `wasi:sockets` provider whose UDP surface answers
  * `not-supported` (the endpoint binds no socket when `udp-bind-addr` is
diff --git a/host-deltic/src/repo.ts b/host-polyengine/src/repo.ts
similarity index 98%
rename from host-deltic/src/repo.ts
rename to host-polyengine/src/repo.ts
index 9c739e0..850004f 100644
--- a/host-deltic/src/repo.ts
+++ b/host-polyengine/src/repo.ts
@@ -4,7 +4,7 @@
 // this — consumers use the packaged endpoint component (or pass their own
 // bytes) and bring their own relay.
 
-// This file sits at host-deltic/src/repo.ts, so the repo root is two
+// This file sits at host-polyengine/src/repo.ts, so the repo root is two
 // levels up.
 const ROOT = new URL("../../", import.meta.url);
 
diff --git a/host-deltic/src/run-endpoint.ts b/host-polyengine/src/run-endpoint.ts
similarity index 98%
rename from host-deltic/src/run-endpoint.ts
rename to host-polyengine/src/run-endpoint.ts
index d69c373..6331f98 100644
--- a/host-deltic/src/run-endpoint.ts
+++ b/host-polyengine/src/run-endpoint.ts
@@ -1,5 +1,5 @@
-// The iroh endpoint exam on the deltic host: the endpoint COMPONENT
-// runtime-linked under stock Deno, with the sibling repositories' deltic
+// The iroh endpoint exam on the polyengine host: the endpoint COMPONENT
+// runtime-linked under stock Deno, with the sibling repositories' polyengine
 // host modules supplying every non-WASI import — no transpile step, no
 // generated tree, no engine flag.
 //
@@ -9,7 +9,7 @@
 // delivered); the jco host has since retired, and this file's driving
 // logic is what its held-ready driver would have used.
 //
-//   just exam-deltic
+//   just exam-polyengine
 //
 // `--unstable-net` is not needed by anything here today (see src/sockets.ts:
 // the browser profile binds no UDP socket and the exam asserts zero
@@ -33,9 +33,9 @@
 // other tasks (`connect`, `accept`, `open-bi`, …) all park in `wait_until`,
 // whose first act is `shared.borrow_mut()` — which panics `RefCell already
 // borrowed`, aborting the guest with an `unreachable` trap. The hazard is
-// latent on every host; deltic reaches it more often because a resolved
+// latent on every host; polyengine reaches it more often because a resolved
 // task that blocks mid-frame releases the instance's exclusivity there (a
-// documented wasmtime-tracking divergence, deltic
+// documented wasmtime-tracking divergence, polyengine
 // runtime/src/jspi/bridge.ts), so a parked poller can interleave with the
 // signing window.
 //
@@ -74,7 +74,7 @@ async function newEndpointInstance(
     ...options,
   });
 }
-import { ComponentException } from "@deltic/runtime/embedder";
+import { ComponentException } from "@polyengine/runtime/embedder";
 import { resetUdpCallLog, udpCallLog } from "./sockets.ts";
 import type {
   CloseInfo,
@@ -472,7 +472,7 @@ async function echoRoundtrip(conn: Connection, sconn: Connection, what: string):
 
 async function main(): Promise<number> {
   installPanicWatchdog();
-  console.log("iroh endpoint exam (deltic / stock Deno)");
+  console.log("iroh endpoint exam (polyengine / stock Deno)");
 
   const relay = await startRelay();
   try {
diff --git a/host-deltic/src/scenario.ts b/host-polyengine/src/scenario.ts
similarity index 100%
rename from host-deltic/src/scenario.ts
rename to host-polyengine/src/scenario.ts
diff --git a/host-deltic/src/sockets.ts b/host-polyengine/src/sockets.ts
similarity index 95%
rename from host-deltic/src/sockets.ts
rename to host-polyengine/src/sockets.ts
index 1327668..d834a66 100644
--- a/host-deltic/src/sockets.ts
+++ b/host-polyengine/src/sockets.ts
@@ -23,10 +23,10 @@
 //     socket. Scenario 1 asserts exactly that.
 //
 // A direct-path leg (real UDP over `Deno.listenDatagram`) is the natural
-// extension once deltic's wasi package grows p3 `wasi:sockets` providers
-// (lann/deltic#4); this file is where that provider would be wired.
+// extension once polyengine's wasi package grows p3 `wasi:sockets` providers
+// (polymorph-components/polyengine#4); this file is where that provider would be wired.
 
-import { ComponentException } from "@deltic/runtime/embedder";
+import { ComponentException } from "@polyengine/runtime/embedder";
 
 /** `wasi:sockets/types@0.3.0`'s `ip-address-family` enum. */
 export type IpAddressFamily = "ipv4" | "ipv6";
diff --git a/host-deltic/src/types.ts b/host-polyengine/src/types.ts
similarity index 97%
rename from host-deltic/src/types.ts
rename to host-polyengine/src/types.ts
index 8209408..857a93f 100644
--- a/host-deltic/src/types.ts
+++ b/host-polyengine/src/types.ts
@@ -1,6 +1,6 @@
 // A hand-written TS facade for `polymorph:iroh/endpoint@0.1.0`, transcribed
-// from this repository's WIT (wit/iroh.wit) under the deltic embedder
-// conventions (contracts/embedder-api.md in the deltic repository):
+// from this repository's WIT (wit/iroh.wit) under the polyengine embedder
+// conventions (contracts/embedder-api.md in the polyengine repository):
 //
 //   * resource -> PascalCase class, methods camelCase, statics static
 //   * every export is Promise-shaped; `result<T, E>` in RETURN position
diff --git a/justfile b/justfile
index c2306b5..1858fe9 100644
--- a/justfile
+++ b/justfile
@@ -18,9 +18,9 @@ build-components:
     cargo build -p iroh-endpoint -p iroh-endpoint-demo -p iroh-exec-model-guest --target wasm32-wasip2 --release
     mkdir -p target/components
     wac plug target/wasm32-wasip2/release/iroh_endpoint_demo.wasm --plug target/wasm32-wasip2/release/iroh_endpoint.wasm -o target/components/iroh-demo.wasm
-    # @polymorph/iroh's generated asset module (gitignored): host-deltic's
+    # @polymorph/iroh's generated asset module (gitignored): host-polyengine's
     # `deno check src` and the jsr publish need it on disk.
-    deno run --allow-read=target --allow-write=host-deltic/src/endpoint_component.ts scripts/embed-endpoint-component.ts
+    deno run --allow-read=target --allow-write=host-polyengine/src/endpoint_component.ts scripts/embed-endpoint-component.ts
 
 # Build the Wasmtime host binary the gates drive, and the native
 # interop peer. The exec-model probe driver is deliberately NOT here:
@@ -76,42 +76,42 @@ probes: build-components
 matrix: build
     ./scripts/matrix.sh
 
-# The deltic host's module graph + the node-datachannel addon (whose
+# The polyengine host's module graph + the node-datachannel addon (whose
 # install script needs an explicit grant). Idempotent.
-deltic-setup:
-    cd host-deltic && deno install --frozen --allow-scripts=npm:node-datachannel
+polyengine-setup:
+    cd host-polyengine && deno install --frozen --allow-scripts=npm:node-datachannel
 
-# The endpoint exam on the deltic host: the endpoint component
+# The endpoint exam on the polyengine host: the endpoint component
 # runtime-linked under stock Deno — bind + identity, relay echo, WebRTC
 # upgrade, the issue #10 concurrency rows, teardown. See
-# host-deltic/README.md.
-exam-deltic: build-components deltic-setup
+# host-polyengine/README.md.
+exam-polyengine: build-components polyengine-setup
     #!/usr/bin/env bash
     set -euo pipefail
-    # One RESOLVED deltic version repo-wide (host-deltic/README.md "The
+    # One RESOLVED polyengine version repo-wide (host-polyengine/README.md "The
     # pin"): the exam is the natural fail-loud point, replacing the
-    # retired fetch-translator gate. host-deltic's published manifest
+    # retired fetch-translator gate. host-polyengine's published manifest
     # carries caret ranges, so specifier strings no longer pin identity;
-    # what module identity needs is that every @deltic/* package (except
-    # @deltic/protocol, versioned independently) RESOLVES to the same
+    # what module identity needs is that every @polyengine/* package (except
+    # @polyengine/protocol, versioned independently) RESOLVES to the same
     # version across both deno.locks — a translator/runtime split is
     # exactly the plan-format skew (or double-runtime WitError identity
     # break) the packaged translator exists to rule out.
-    v=$(jq -r '.jsr | keys[]' host-deltic/deno.lock \
+    v=$(jq -r '.jsr | keys[]' host-polyengine/deno.lock \
         experiments/iroh-relay-ws/host/deno.lock \
-        | grep '^@deltic/' | grep -v '^@deltic/protocol@' \
+        | grep '^@polyengine/' | grep -v '^@polyengine/protocol@' \
         | sed 's/.*@//' | sort -u)
     if [ "$(printf '%s\n' "$v" | wc -l)" != 1 ]; then
-        echo "deltic pin drift across deno.locks: $v" >&2
+        echo "polyengine pin drift across deno.locks: $v" >&2
         exit 1
     fi
     # ...and the RESOLVED graph must agree: one embedder instance, no raw
     # URLs (a sibling module's own config can silently split module
     # identity in a way no config grep catches; see the gate script).
-    deno info --json --config host-deltic/deno.json host-deltic/src/run-endpoint.ts \
-        | deno run scripts/deltic-identity-gate.ts
-    timeout 600 deno run -A --config host-deltic/deno.json --frozen \
-        host-deltic/src/run-endpoint.ts
+    deno info --json --config host-polyengine/deno.json host-polyengine/src/run-endpoint.ts \
+        | deno run scripts/polyengine-identity-gate.ts
+    timeout 600 deno run -A --config host-polyengine/deno.json --frozen \
+        host-polyengine/src/run-endpoint.ts
 
 # The measured-claims gate: per-wire latency/throughput medians,
 # asserted against budgets (issue #4).
@@ -126,11 +126,11 @@ interop-prod: build
 # The upstream-iroh-over-relay spike (issue #14): the unmodified iroh
 # crate (upstream main + the wasi-enablement patch branches, from the
 # lann/iroh and lann/net-tools polymorph-iroh branches) as a wasip2
-# component, runtime-linked under deltic on stock Deno — relay-only
-# bootstrap over the polymorph-websocket sibling's deltic module, then
+# component, runtime-linked under polyengine on stock Deno — relay-only
+# bootstrap over the polymorph-websocket sibling's polyengine module, then
 # live migration onto a WebRTC data channel through the synthetic-address
 # overlay (issue #26). Research probe attached to the issue, so manual:
-# not part of `ci`. The host's sibling deltic module imports await the
+# not part of `ci`. The host's sibling polyengine module imports await the
 # JSR migration (issue #83).
 iroh-relay-ws:
     cd experiments/iroh-relay-ws/guest && cargo build --release
diff --git a/scripts/embed-endpoint-component.ts b/scripts/embed-endpoint-component.ts
index 6ed698f..c27b97f 100644
--- a/scripts/embed-endpoint-component.ts
+++ b/scripts/embed-endpoint-component.ts
@@ -1,7 +1,7 @@
 // Embed the built endpoint component as @polymorph/iroh's asset module:
 //
 //   target/wasm32-wasip2/release/iroh_endpoint.wasm
-//     -> host-deltic/src/endpoint_component.ts   (gitignored, GENERATED)
+//     -> host-polyengine/src/endpoint_component.ts   (gitignored, GENERATED)
 //
 // Run by `just build-components` and by the jsr-publish workflow. Base64
 // in a TypeScript module keeps the bytes inside the statically-analyzable
@@ -10,11 +10,11 @@
 // raw-imports flag.
 //
 //   deno run --allow-read=target \
-//     --allow-write=host-deltic/src/endpoint_component.ts \
+//     --allow-write=host-polyengine/src/endpoint_component.ts \
 //     scripts/embed-endpoint-component.ts
 
 const WASM = "target/wasm32-wasip2/release/iroh_endpoint.wasm";
-const OUT = "host-deltic/src/endpoint_component.ts";
+const OUT = "host-polyengine/src/endpoint_component.ts";
 
 const wasm = await Deno.readFile(WASM);
 let bin = "";
diff --git a/scripts/matrix.sh b/scripts/matrix.sh
index 6e09de4..b2e061b 100755
--- a/scripts/matrix.sh
+++ b/scripts/matrix.sh
@@ -105,8 +105,8 @@ run_pair() {
 # per-component execution slot serialized whole task lifetimes, so the
 # detached pump task (alive with in-flight imports across export calls)
 # deadlocked every later export call (lann/jco#11, fix attempts in
-# lann/jco PR #27). host-deltic runs this surface under stock Deno
-# instead (see host-deltic/README.md); `just exam-deltic` is its gate.
+# lann/jco PR #27). host-polyengine runs this surface under stock Deno
+# instead (see host-polyengine/README.md); `just exam-polyengine` is its gate.
 
 run_pair "endpoint-relay-wasmtime-wasmtime" \
     timeout 120 "$EHOST" "$COMPOSED_WASM" --role server --relay "$RELAY_URL" \
diff --git a/scripts/deltic-identity-gate.ts b/scripts/polyengine-identity-gate.ts
similarity index 53%
rename from scripts/deltic-identity-gate.ts
rename to scripts/polyengine-identity-gate.ts
index 0ac7d9b..77c2fa3 100644
--- a/scripts/deltic-identity-gate.ts
+++ b/scripts/polyengine-identity-gate.ts
@@ -1,17 +1,17 @@
-// The deltic module-identity assert (host-deltic/README.md "Module
+// The polyengine module-identity assert (host-polyengine/README.md "Module
 // identity"): the run-endpoint graph must contain exactly ONE
-// @deltic/runtime version and ZERO raw.githubusercontent modules.
+// @polyengine/runtime version and ZERO raw.githubusercontent modules.
 //
 // The failure this guards (seen live before the sibling pins converged on
-// one deltic release): a sibling host module's own
-// package-shaped deno.json mapped @deltic/runtime/embedder to a raw
+// one polyengine release): a sibling host module's own
+// package-shaped deno.json mapped @polyengine/runtime/embedder to a raw
 // pinned-tag URL, so the graph carried TWO embedder module instances and
 // `instanceof ComponentException` silently stopped holding across that sibling's
 // boundary. Config greps can't see this — only the resolved graph can —
 // so the exam pipes `deno info --json` through this assert.
 //
-//   deno info --json --config host-deltic/deno.json \
-//       host-deltic/src/run-endpoint.ts | deno run scripts/deltic-identity-gate.ts
+//   deno info --json --config host-polyengine/deno.json \
+//       host-polyengine/src/run-endpoint.ts | deno run scripts/polyengine-identity-gate.ts
 const g = JSON.parse(await new Response(Deno.stdin.readable).text());
 const raw = g.modules.filter((m: { specifier: string }) =>
   m.specifier.includes("raw.githubusercontent")
@@ -19,16 +19,16 @@ const raw = g.modules.filter((m: { specifier: string }) =>
 const vers = new Set(
   g.modules
     .map((m: { specifier: string }) =>
-      m.specifier.match(/jsr\.io\/@deltic\/runtime\/([^/]+)\//)?.[1]
+      m.specifier.match(/jsr\.io\/@polyengine\/runtime\/([^/]+)\//)?.[1]
     )
     .filter(Boolean),
 );
 if (raw.length || vers.size !== 1) {
   console.error(
-    `deltic module identity violated: ${raw.length} raw-URL module(s), ` +
-      `@deltic/runtime versions=[${[...vers].join(", ")}] (want exactly one, no raw URLs)`,
+    `polyengine module identity violated: ${raw.length} raw-URL module(s), ` +
+      `@polyengine/runtime versions=[${[...vers].join(", ")}] (want exactly one, no raw URLs)`,
   );
   for (const m of raw.slice(0, 5)) console.error(`  raw: ${m.specifier}`);
   Deno.exit(1);
 }
-console.log(`deltic module identity: one runtime (${[...vers][0]}), no raw URLs`);
+console.log(`polyengine module identity: one runtime (${[...vers][0]}), no raw URLs`);