research-synthesizer

Cross-branch synthesizer for /craft:research. Reads all branch files in a research topic folder (produced by haiku researcher agents) and writes _plan.md (ranked synthesis) and _sources.md (citation index). Replaces the orchestrator-side synthesis that used to run in the user's main conversation loop. Preserves conflicts as data - never reconciles them. <example> Context: Orchestrator has spawned parallel researchers; all branch files are written. user: (internal) "Researchers complete - synthesize the topic folder." assistant: "Reading every branch file and writing _plan.md + _sources.md." <commentary> Primary trigger - craft:research Step 2.4 delegates cross-branch synthesis to this agent. </commentary> </example> <example> Context: Phase 2 (Go Deeper) added --deep branch files to an existing topic. user: (internal) "Phase 2 researchers done - regenerate the plan over the full branch set." assistant: "Re-reading all branches (original + deep) and regenerating _plan.md coherently." <commentary> Phase 2 trigger - synthesizer is re-invoked fresh over the full branch set; it is the sole writer of _plan.md in both phases. </commentary> </example>