Merge PR #492: Add blockImages setting

- Setting controls filtering at convertToLlm layer
- Images are always stored in session, filtered dynamically based on current setting
- Toggle mid-session works: LLM sees/doesn't see images already in session
- Fixed SettingsManager.save() to handle inMemory mode for all setters

Closes #492

packages/coding-agent/CHANGELOG.md

@@ -5,6 +5,7 @@
 ### Added
 
 - Session ID is now forwarded to LLM providers for session-based caching (used by OpenAI Codex for prompt caching).
+- Added `blockImages` setting to prevent images from being sent to LLM providers ([#492](https://github.com/badlogic/pi-mono/pull/492) by [@jsinge97](https://github.com/jsinge97))
 
 ### Fixed