https://kdcube.tech/blog.html Engineering writing from KDCube: isolated execution, timeline-first agents, cache shaping, distributed execution, workspace isolation, and ReAct v3 runtime design. en-us Thu, 30 Apr 2026 12:00:00 +0000 https://kdcube.tech/blog/isolated-runtime-split-executor.html https://kdcube.tech/blog/isolated-runtime-split-executor.html Thu, 30 Apr 2026 12:00:00 +0000 How KDCube isolates generated code with a split Docker executor/supervisor design: no executor network, no platform secrets, narrow mounts, supervised tool calls, and complete diagnostic logs. https://kdcube.tech/blog/react-v2-vs-claude-code.html https://kdcube.tech/blog/react-v2-vs-claude-code.html Fri, 10 Apr 2026 12:00:00 +0000 An architecture comparison between the KDCube ReAct v3 agent and Claude Code: runtime vs client surface, context model, tools, skills, execution, streaming, permissions, and KDCube's hosted Claude Code integration. https://kdcube.tech/blog/how-react-remembers.html https://kdcube.tech/blog/how-react-remembers.html Mon, 06 Apr 2026 12:00:00 +0000 How memory works in React v3: timeline memory, internal memory anchors, SOURCES POOL and ANNOUNCE as the attention area, namespaces, plans, compaction summaries, turn logs, workspace memory, and retrieval by path or search. https://kdcube.tech/blog/how-react-manages-cache.html https://kdcube.tech/blog/how-react-manages-cache.html Mon, 06 Apr 2026 12:00:00 +0000 How React v3 manages cache across turns: previous-turn, pre-tail, and tail checkpoints; react.hide for tail cleanup; TTL pruning; compaction; and why context still stays available via path-based recovery. https://kdcube.tech/blog/announce-is-not-decoration.html https://kdcube.tech/blog/announce-is-not-decoration.html Mon, 06 Apr 2026 12:00:00 +0000 Why React v3 keeps an attention area at the tail of the timeline: SOURCES POOL plus ANNOUNCE, with ANNOUNCE acting as the signal board for budgets, alerts, workspace state, steer, and evolving conversation-wide context. https://kdcube.tech/blog/why-not-pure-tool-calling.html https://kdcube.tech/blog/why-not-pure-tool-calling.html Mon, 06 Apr 2026 12:00:00 +0000 Why React v3 does not use pure provider-native tool calling as its primary orchestration protocol, and why timeline-first context plus subscribable channeled generation is a better fit for this runtime.