refactor: rebuild desktop app with Tauri

server/prompt/cursor/compaction/prompt.md

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+You are compacting conversation history for future model turns.
+Produce a concise plain-text summary that preserves durable context: user goals, constraints, facts, decisions, files, commands, errors, tool outcomes, and pending follow-ups.
+Do not address the user. Do not mention compaction, summarization, or token limits.
+Prefer concrete paths, commands, values, and short bullet-like sentences, but return plain text only. 

server/prompt/cursor/compaction/runtime.md

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+{{REQUEST_CONTEXT}}{{OPEN_FILES}}{{SELECTED_CONTEXT}}{{ACTION_CONTEXT}}<timestamp>{{TIMESTAMP}}</timestamp>
+<user_query>
+{{USER_QUERY}}
+</user_query>