WIP: stage all uncommitted work — sprints 46-221, graduation headers, specialist fleet, test steps 909-1988

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

sprint127_plan.md

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+# Sprint 127 Plan: Deterministic Debug Assist Packets
+
+## Context
+
+Sprint 126 added checkpointing/resume/export for campaigns. Sprint 127 focuses on
+making debugging guidance more explicit and machine-friendly so smaller agents can
+follow constrained steps reliably.
+
+---
+
+## Goals
+
+1. Add deterministic hint and triage models
+2. Add bounded repro reduction and patch risk labeling models
+3. Add MCP tools for hinting/triage/repro/risk
+4. Preserve deterministic outputs and machine-readable packets
+
+---
+
+## Steps
+
+### Step 1509: Debug hint template model (10 tests)
+### Step 1510: Failure triage score model (10 tests)
+### Step 1511: Minimal repro reducer model (8 tests)
+### Step 1512: Patch risk labeler model (8 tests)
+### Step 1513: `whetstone_generate_debug_hints` MCP tool (8 tests)
+### Step 1514: `whetstone_score_failure_triage` MCP tool (8 tests)
+### Step 1515: `whetstone_reduce_repro_command` MCP tool (8 tests)
+### Step 1516: `whetstone_label_patch_risk` MCP tool (8 tests)
+### Step 1517: Debug assist packet bundle model (8 tests)
+### Step 1518: Sprint 127 integration summary + regression (8 tests)
+
+---
+
+## Architecture Gate
+
+- Hints and scores must be deterministic for identical inputs
+- Repro reduction must be bounded and machine-readable
+- Risk labels must include explicit rationale and level
+- Max 600 lines per header