Introduces the new planner pipeline both the webapp runner and the
mana-ai tick will swap onto in the next commits. Additive for now —
the legacy buildPlannerPrompt + parsePlannerResponse stay exported so
callers can migrate one at a time; they get removed once the last
consumer is gone.
- planner/loop.ts — runPlannerLoop orchestrates a multi-turn chat
against a caller-supplied LlmClient. Tool-calls from the LLM are
handed to an onToolCall callback and their results fed back as
tool-messages. Parallel tool-calls in one turn execute sequentially
to keep the message log linear for debugging. Stops on assistant
stop, empty tool_calls, or a hard max-rounds ceiling (default 5).
- planner/system-prompt.ts — new buildSystemPrompt. ~40-line German
system frame, no tool listing (the SDK-level tools field carries
the schemas now), no JSON format example, no "please return JSON"
plea. User frame renders mission + linked inputs + last 3
iteration summaries, same as before.
- Five test cases covering the loop: immediate stop, single tool
call with result feedback, parallel calls execute in order, tool
failures propagate as tool-messages the LLM can react to, and
maxRounds ceiling fires with the right stopReason.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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