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Raphe Phase 1: serotonin source structure#132

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Raphe Phase 1: serotonin source structure#132
TSchonleber wants to merge 1 commit into
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raphe-phase-1

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Completes the neuromod-source trio with LC (NE, #121) and VTA/SNc (DA, #130). Migration 077 adds 3 tables, 4 MCP tools, 8 tests. DRN (time horizon) + MRN (mood persistence) subtypes.

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Completes the neuromod-source trio with LC (NE, #121) and VTA/SNc
(DA, #130). Currently serotonin in brainctl is only a dial
(bg_modulators.serotonin); now it has a source nucleus with state.

DRN (dorsal raphe) = time horizon / patience / cost-of-waiting.
MRN (median raphe) = mood persistence / hippocampal stability.

- Migration 077: 3 tables. DRN + MRN subtype catalog seeded.
- 4 MCP tools: status, fire, set_state, history.
- 8 tests.

Phase 3 will wire raphe.time_horizon into BG eligibility-trace
decay (high 5-HT → longer eligibility window).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Superseded by #138 (brainctl-consolidation-v2), which already merged this work into main as part of the v2 tool surface consolidation. Closing as redundant.

@TSchonleber TSchonleber deleted the raphe-phase-1 branch May 21, 2026 08:15
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