Add branching-strategy skill with next and create actions

Version-aware branch naming (X.Y.Z.Q/{TASK_CODE}-{FEATURE}-{SEQ}),
branch creation from origin/test with origin/main fallback, and the
PR-into-test merge rule. Ships a TypeScript CLI (next, create) plus
shell modules (loggers, base, cli) run via Taskfile.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/.scripts/base/lib/-mask.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# -------------------------------------------------------------------------------------
+#
+#
+#
+# -------------------------------------------------------------------------------------
+
+_base_mask() {
+	local original_value="$1"
+	local RET_VAL
+	if
+		[[ -n "$original_value" && ${#original_value} -gt 2 ]]
+	then
+		RET_VAL="${original_value:0:1}$(printf '%*s' $((${#original_value} - 2)) '' | tr ' ' '*')${original_value: -1}"
+	else
+		RET_VAL="$(printf '%*s' ${#original_value} '' | tr ' ' '*')"
+	fi
+	echo "${RET_VAL}"
+}