chore(release): v0.17.2

Version bump via changesets.

packages/core/CHANGELOG.md

@@ -1,5 +1,14 @@
 # @fusion/core
 
+## 0.17.2
+
+### Patch Changes
+
+- 17a6634: Fix pre-merge workflow steps stalling on tasks with no relevant changes (FN-3327 post-mortem).
+
+  - **`@fusion/engine`**: `executeWorkflowStep` now computes the diff scope (`git diff --name-only` plus `--shortstat` against `task.baseCommitSha`) before spawning the reviewer agent and injects a "Diff Scope" block into the system prompt. The block lists every file the task actually changed and adds explicit scoping rules: review only those files, and if none match the step's category respond immediately with a short approval line and stop. Without this, an open-ended review prompt (e.g. WS-005 "Frontend UX Design") would drift into pre-existing files matching the task description's keywords, exhaust the 360 s timeout, and trigger the auto-revive → re-finalize → re-fail loop that had FN-3327 wedged in `in-review`. Both git calls are best-effort; failures degrade to a "no modified files detected" notice rather than blocking the step.
+  - **`@fusion/core`**: The built-in `frontend-ux-design` workflow step template (WS-005) now opens with a FAST-BAIL rule telling the reviewer to inspect the Diff Scope first and return an immediate one-line approval when no UI/CSS/component files are present. New installs and freshly-materialized templates pick this up automatically; existing DB rows are unaffected but are still rescued by the executor-side scope injection above.
+
 ## 0.17.1
 
 ## 0.17.0

packages/core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@fusion/core",
-  "version": "0.17.1",
+  "version": "0.17.2",
   "license": "MIT",
   "description": "Fusion core: task store, scheduler, settings, and shared domain types backing the Fusion AI coding agent.",
   "homepage": "https://github.com/Runfusion/Fusion#readme",