Develop Multimodal Task Planning and Memory Integration

Implement the `Planning` and `Memory Management` modules. Given a natural language task instruction (e.g., 'Find the red key and go to the blue door') and multimodal input (visual scene + text), use Gemini 2.5 Pro to generate a sequence of high-level sub-goals and then decompose these into specific tool calls. Integrate the Postgres + pgvector memory system to store and retrieve past experiences and learned strategies, allowing the agent to adapt its plan based on relevant historical context.