diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a9e3eed3..4447c13e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -5,6 +5,9 @@ on:
   push:
     branches:
       - main
+  schedule:
+    - cron: "17 4 * * *"
+  workflow_dispatch:
 
 permissions:
   contents: read
@@ -25,8 +28,50 @@ jobs:
           node-version: "24"
           cache: npm
 
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - run: npm ci
+
+      - run: npm run check
+
+      - run: npm test
+
+      - name: Verify Bun can load the plugin
+        run: bun -e "await import('./src/index.js')"
+
+  opencode-peer-compat:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        plugin-version: ["1.4.0", "latest"]
+
+    steps:
+      - uses: actions/checkout@v6
+
+      - uses: actions/setup-node@v6
+        with:
+          node-version: "24"
+          cache: npm
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
       - run: npm ci
 
+      - name: Install OpenCode plugin compatibility target
+        shell: bash
+        run: npm install --no-save --package-lock=false "@opencode-ai/plugin@${{ matrix.plugin-version }}"
+
+      - name: Show tested OpenCode plugin version
+        run: node -p "require('./node_modules/@opencode-ai/plugin/package.json').version"
+
       - run: npm run check
 
       - run: npm test
+
+      - name: Verify Bun can load with this OpenCode plugin
+        run: bun -e "await import('./src/index.js')"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5a56ec3..792ecc5e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.5.22
+
+- Hardened compatibility with current OpenCode 1.18.15 while preserving the existing `>=1.4.0` peer range.
+- Handled loop commands now also set `output.noReply = true`; OpenCode 1.18.x safely ignores the unknown field, while hosts that add the proposed `noReply` hook support can skip the acknowledgement model turn automatically.
+- Added Bun runtime loading coverage so CI exercises the runtime OpenCode actually uses to load plugins, not only Node syntax/tests.
+- Added explicit minimum-peer coverage against `@opencode-ai/plugin@1.4.0` and scheduled testing against the latest published OpenCode plugin package.
+- Kept the v0.5.21 server-plugin acknowledgement fallback for current OpenCode versions where `command.execute.before` cannot cancel the prompt turn.
+
 ## 0.5.21
 
 - Verified server-plugin compatibility against OpenCode 1.18.15 and updated the development plugin dependency accordingly.
diff --git a/README.md b/README.md
index bba6783a..b3f172fb 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ v0.5.11 includes a referenced heartbeat scheduler. This is important in OpenCode
 
 ## Current status
 
-**v0.5.21 targets current OpenCode 1.18.x compatibility and safer releases.** Server-plugin control commands keep their locked-down acknowledgement prompt instead of creating an empty command message, `/compact` prefers the current `session.compact` TUI command, and CI now covers Ubuntu and Windows before publishing. **v0.5.20 fixes Windows TUI state writes.** Session job state is written through the OS temp directory with rename plus copy/unlink fallback and short retries, so antivirus locks and OpenCode snapshots no longer drop `/loop` jobs with `EPERM` on rename. **v0.5.19** hardens Goal Mode, package updates, and the background daemon: package installs are pinned to the installed version so OpenCode cannot keep loading an older cached release, scheduler-created goal messages no longer self-interrupt on delayed updates, finite daemon failures return nonzero, model/agent selection is supported, Windows scheduled tasks use a short launcher that stays below the `/TR` limit, and asynchronous release verification is reliable under load.
+**v0.5.22 adds forward-compatible OpenCode command handling plus Bun and peer-range compatibility CI.** **v0.5.21 targets current OpenCode 1.18.x compatibility and safer releases.** Server-plugin control commands keep their locked-down acknowledgement prompt instead of creating an empty command message, `/compact` prefers the current `session.compact` TUI command, and CI now covers Ubuntu and Windows before publishing. **v0.5.20 fixes Windows TUI state writes.** Session job state is written through the OS temp directory with rename plus copy/unlink fallback and short retries, so antivirus locks and OpenCode snapshots no longer drop `/loop` jobs with `EPERM` on rename. **v0.5.19** hardens Goal Mode, package updates, and the background daemon: package installs are pinned to the installed version so OpenCode cannot keep loading an older cached release, scheduler-created goal messages no longer self-interrupt on delayed updates, finite daemon failures return nonzero, model/agent selection is supported, Windows scheduled tasks use a short launcher that stays below the `/TR` limit, and asynchronous release verification is reliable under load.
 
 The known update-related symptoms from older builds are fixed:
 
diff --git a/package-lock.json b/package-lock.json
index 09682528..b5f2871e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@bybrawe/opencode-loop",
-  "version": "0.5.21",
+  "version": "0.5.22",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@bybrawe/opencode-loop",
-      "version": "0.5.21",
+      "version": "0.5.22",
       "license": "MIT",
       "bin": {
         "opencode-loop": "scripts/install-node.mjs",
diff --git a/package.json b/package.json
index 94a448c4..0635f110 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@bybrawe/opencode-loop",
-  "version": "0.5.21",
+  "version": "0.5.22",
   "description": "Claude Code/Codex style /loop and experimental goal mode for OpenCode: heartbeat scheduler, idle-safe loops, scheduled commands, compact scheduling, verification, checkpoints, and persistent coding goals.",
   "type": "module",
   "main": "src/index.js",
diff --git a/scripts/smoke-test.mjs b/scripts/smoke-test.mjs
index 5d651f0f..59e781cd 100644
--- a/scripts/smoke-test.mjs
+++ b/scripts/smoke-test.mjs
@@ -94,6 +94,7 @@ try {
   }, output)
   assert.equal(output.parts.length, 1, "a locally handled slash command must keep a valid acknowledgement prompt")
   assert.equal(output.parts[0].text, "original command body")
+  assert.equal(output.noReply, true, "handled commands should request noReply for compatible OpenCode hosts")
 
   await hooks["command.execute.before"]({ command: "loop-now", sessionID, arguments: "goal" }, { parts: [] })
   assert.equal(
diff --git a/src/index.js b/src/index.js
index 2c4a304a..6b744506 100644
--- a/src/index.js
+++ b/src/index.js
@@ -2220,9 +2220,10 @@ async function handleCommand(directory, client, input, fallbackName, fallbackArg
   if (isLoopCommandName(name)) guardLoopOwnedUserMessage(sessionID)
 
   const handled = () => {
-    // OpenCode server plugins cannot currently cancel the command prompt turn.
-    // Keep the command markdown acknowledgement intact so opencode-loop-local
-    // receives a valid, tool-denied message instead of an empty parts array.
+    // OpenCode 1.18.x ignores unknown hook output fields, while proposed/newer
+    // hosts can honor noReply to skip the otherwise unavoidable model turn.
+    // Keep acknowledgement parts intact as the compatibility fallback.
+    if (output && typeof output === "object") output.noReply = true
     return true
   }