GRM-65: fix: pin devx to v0.4.0, fix cliff.toml preprocessor, bump to v0.7.0

cliff.toml

@@ -39,8 +39,8 @@ sort_commits = "oldest"
 recurse_submodules = false
 
 commit_preprocessors = [
-    # Strip GRM-N task ID prefix from merge commits so git-cliff sees conventional commits
-    { pattern = "^GRM-\\d+\\s+", replace = "" },
+    # Strip GRM-N: task ID prefix from squash-merge commits so git-cliff sees conventional commits
+    { pattern = "^GRM-\\d+:\\s+", replace = "" },
 ]
 
 commit_parsers = [
@@ -66,3 +66,6 @@ commit_parsers = [
 features_always_bump_minor = true
 breaking_always_bump_major = false
 initial_tag = "0.1.0"
+# Refactor commits bump patch — structural changes to src/ or pyproject.toml
+# affect users even though no new feature was added.
+refactor_always_bump_patch = true