Add placeholders for nonexistant versions

CHANGELOG.md

@@ -11,6 +11,9 @@ Note: Only use **NEW:** for entirely new prompt files, NOT for new additions/sec
   - Explore & Plan agents: Added note that file editing tools are not available
   - Explore & Plan agents: Reformatted Bash tool restrictions for clarity
 
+
+#### **2.0.48** – _This versions does not exist._
+
 # [2.0.47](https://github.com/Piebald-AI/claude-code-system-prompts/commit/62075a9489f7edb416970b9e67605c288ce562ac)
 
 - **NEW:** Agent prompt: Multi-Agent Planning Note - instructions for multi-agent planning when `CLAUDE_CODE_PLAN_V2_AGENT_COUNT` > 1
@@ -57,6 +60,12 @@ Note: Only use **NEW:** for entirely new prompt files, NOT for new additions/sec
 - Prompt Hook execution: Fixed JSON format (added quotes around keys)
 - Main system prompt: Added `FEEDBACK_CHANNEL` variable
 
+#### **2.0.40** – _This versions does not exist._
+
+#### **2.0.39** – _This versions does not exist._
+
+#### **2.0.38** – _This versions does not exist._
+
 # [2.0.37](https://github.com/Piebald-AI/claude-code-system-prompts/commit/a6eb810)
 
 - **NEW:** Agent prompt: Prompt Hook execution
@@ -130,6 +139,8 @@ Note: Only use **NEW:** for entirely new prompt files, NOT for new additions/sec
 
 - **NEW:** Tool description: Bash (sandbox note)
 
+#### **2.0.23** – _This versions does not exist._
+
 #### [2.0.22](https://github.com/Piebald-AI/claude-code-system-prompts/commit/f6910aa)
 
 <sub>_No changes to the system prompts in v2.0.22._</sub>
@@ -157,6 +168,8 @@ Note: Only use **NEW:** for entirely new prompt files, NOT for new additions/sec
 - Main system prompt: Added examples for when to use Explore agent vs direct search
 - Main system prompt: Added new variables (`EXPLORE_AGENT`, `GLOB_TOOL_NAME`, `GREP_TOOL_NAME`)
 
+#### **2.0.16** &ndash; _This versions does not exist._
+
 # [2.0.15](https://github.com/Piebald-AI/claude-code-system-prompts/commit/ed40efa)
 
 - Updated `ExitPlanMode` tool description formatting (added "Examples" header)