aiti-devtools-dsh (DSH Host Adapter)

❝ The AI in the page doesn't pick hosts — swap in another harness and the same face-to-face debugging plays out. ❞

Ports the main features of aiti-devtools (the in-page AI debugging assistant) onto DSH (DeepSeek Harness) — DeepSeek's open-source agent harness (Cordis-pluginized, with a built-in web UI).

• The same integration JS launcher (aiti-devtools-inject artifact, reused unchanged); AI window = DSH web UI (aiUrl points to the DSH site)
• host bundle (Cordis plugin entry apply): in-process bridge mounted at /aiti (launcher / cockpit / bridge / mcp on the same port) + 16 aiti_* tools + the /aiti/picked candidate report endpoint + agent/pre-step placeholder replacement
• client plugin (browser side): conversation.input.overlay slot candidate bar with two chip zones (placeholder zone + description zone + ✕ + clear) + detail dialog (field filtering / open file in background) + click-picking an element → composer inserts placeholder [元素N] + automatic cleanup after send (aiti_consumed authoritative signal)
• Interaction cards: the model calls aiti_user_confirm/choose/input → bridge pushes to the AI window → postMessage forwards to the host window (dbg_mcp_interaction) to answer → dbg_mcp_result returns to the bridge; answer candidates enter the bar automatically as [回答N], and page error candidates are captured automatically (red chip + errHint)
• Placeholder scheme: DSH's llm/stream messages are deep-frozen and cannot be rewritten; the proper insertion point is agent/pre-step (agent-loop waterfall, same as plan-mode) — the replaced message enters both the model input and the session history, consistent with the pi-web original; the consumption signal goes through the bridge's pushAiEvent('aiti_consumed') to directly push the AI window to clear candidates (three placeholder kinds: [元素N]/[回答N]/[错误N])
• End-to-end verified (real Chrome DevTools clicks + 2026-11-07 full-chain recheck on 0.8.2/core 0.3.10): Inspector → click element → HUD → candidate bar → details → send → message contains the full description + [发自: pageId] → candidate bar auto-cleared

Reuses aiti-devtools-agent (AgentBridgeClient + AgentHost + mapBridgeTools), aiti-devtools-core (createBridge in-process bridge + assets artifacts), aiti-devtools-inject — an experience on par with the pi-web integration.