chore(kiloclaw): upgrade openclaw 2026.4.9 → 2026.4.15 (#2801)

Bump version pin across 5 releases (v2026.4.13 was never published).
374 changelog entries analyzed — zero code-level impact on KiloClaw.
All CLI flags, config keys, env vars, and plugin interfaces unchanged.

Changes:
- Dockerfile: version pin 2026.4.9 → 2026.4.15, cache bust v66
- .dev.vars.example: fix stale OPENCLAW_VERSION example (was 2026.4.5)
- e2e/docker-image-testing.md: fix stale version comment

Author: iscekic

services/kiloclaw/.dev.vars.example

@@ -98,7 +98,7 @@ FLY_IMAGE_DIGEST=
 # Used by the worker to self-register the version → image tag mapping in KV,
 # enabling per-user version tracking. Without this, version tracking fields
 # will be null and instances fall back to FLY_IMAGE_TAG directly.
-OPENCLAW_VERSION=2026.4.5
+OPENCLAW_VERSION=2026.4.15
 
 # Legacy fallback for existing instances without per-user apps.
 # New instances get per-user apps (acct-{hash}) created automatically.

services/kiloclaw/Dockerfile

@@ -55,7 +55,7 @@ RUN npm install -g pnpm
 # Patch: bump model discovery timeout from 5s to 60s — shared-cpu machines
 # under boot load routinely need 27-35s for the first TLS+fetch to complete.
 # Remove this sed patch once openclaw exposes a configurable timeout.
-RUN npm install -g openclaw@2026.4.9 \
+RUN npm install -g openclaw@2026.4.15 \
     && OC_DIST=/usr/local/lib/node_modules/openclaw/dist \
     && FOUND_FILES=$(find "$OC_DIST" -name 'provider-models-*.js' | wc -l | tr -d ' ') \
     && if [ "$FOUND_FILES" -eq 0 ]; then echo "ERROR: provider-models-*.js not found in openclaw dist" >&2; exit 1; fi \
@@ -202,8 +202,8 @@ RUN mkdir -p /root/.openclaw \
     && mkdir -p /root/clawd/skills
 
 # Copy helper scripts (used at runtime by the controller/gateway)
-# Build cache bust: 2026-03-17-v65-remove-startup-script
-RUN echo "11"
+# Build cache bust: 2026-04-24-v66-openclaw-2026.4.15
+RUN echo "12"
 COPY openclaw-pairing-list.js /usr/local/bin/openclaw-pairing-list.js
 COPY openclaw-device-pairing-list.js /usr/local/bin/openclaw-device-pairing-list.js
 

services/kiloclaw/e2e/docker-image-testing.md

@@ -141,7 +141,7 @@ docker rm kiloclaw-gateway
 ```bash
 # Check versions
 docker run --rm kiloclaw:test node --version        # v24.14.1
-docker run --rm kiloclaw:test openclaw --version    # 2026.4.5
+docker run --rm kiloclaw:test openclaw --version    # 2026.4.15
 
 # Check directories
 docker run --rm kiloclaw:test ls -la /root/.openclaw