fix: complete embedded WebUI graph interactions

[EterUltimate]

Summary

• completes the AstrBot embedded plugin page with modular dashboard sections for AI insights, monitoring, review queues, jargon learning, expression learning, persona learning, content browsing, graphs, reply strategy, integrations, and settings
• adds bridge APIs under page/* so the embedded page can use runtime WebUI services without depending on the standalone WebUI port
• fixes embedded memory/knowledge graph rendering by syncing canvas dimensions to the container, using centered safe layout bounds, and supporting pointer drag interactions
• bumps release metadata to 3.2.2

Validation

• node --check pages\dashboard\app.js
• python -m py_compile main.py core\page_api.py
• python -m pytest tests\integration\test_package_imports.py tests\integration\test_webui_static_assets.py -q
• git diff --check

[sourcery-ai]

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