feat(agent): agent playground — turn inspector, HITL dock, and tool I/O fidelity - #5054

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ardaerzin wants to merge 45 commits into

big-agents-work

Commits on Jul 2, 2026

fix(frontend): stop agent session tab bar overflow and pin the new-session button
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feat(frontend): make the agent playground splitter resize handle discoverable
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feat(frontend): move the agent revision selector into the playground title row
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feat(frontend): extend shared drawer rail primitives
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refactor(frontend): render sandbox, Claude and MCP forms as flat RailField rows
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refactor(frontend): rebuild the playground build-kit section on ConfigAccordionSection
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feat(frontend): scoped-draft section drawers + Model & harness / Advanced UX
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Merge remote-tracking branch 'origin/big-agents' into big-agents-work
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feat(frontend): rich chat input links, code blocks, and block-style parity
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feat(frontend): persistent HITL approval dock with hardened queue release
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Merge remote-tracking branch 'origin/big-agents' into big-agents-work
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fix(frontend): add breathing room between agent message toolbar and bubble
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docs(agent): Turn Inspector (Build-mode tooling) design spec
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docs(agent): Turn Inspector implementation plan
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feat(frontend): build-mode step log for agent tool calls
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feat(frontend): turn-inspector open-state atom
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feat(frontend): turn-inspector Timeline tab
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feat(frontend): turn-inspector drawer shell
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feat(frontend): mount turn inspector + inspect-turn affordance
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feat(playground): per-turn request capture + correlation helpers
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feat(frontend): session-scoped turn-capture store
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feat(frontend): capture outgoing agent request per send
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feat(frontend): turn-inspector Context tab (config + messages sent)
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feat(frontend): turn-inspector Raw tab (copyable payloads)
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fix(frontend): turn inspector reads live messages, streams, and gates to target session
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feat(frontend): collapsible individual steps in the build-mode step log
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feat(frontend): agent chat empty state — agent-aware in Build, warm minimal in Chat
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fix(frontend): agent chat scroll — stop jump-to-top on stream state change and tool collapse
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fix(sdk): key HITL approval on stable spec name + rawInput args
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fix(runner): HITL resume — stable-name key + non-converging loop-breaker
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fix(frontend): unique fallback id for id-less batch-replay turns
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style(frontend): calmer chat composer
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refactor(frontend): turn inspector — siderail nav, full-round timeline, clearer steps, tighter layout
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fix(sdk): unique vercel stream messageId per turn
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fix(frontend): strip markdown code fences from tool error display
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fix(runner): capture tool args that arrive on tool_call_update
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refactor(frontend): turn inspector — inline side panel with animated width instead of overlay drawer
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fix(runner): restore emit-first tool_call; refresh input via re-emit, not deferral
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Commits on Jul 3, 2026