Document parallel bug flighting plan and current blockers

.claude/agent-memory/parallel-planner/MEMORY.md

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+# Parallel Planner Memory Index
+
+- [Parallel surface is a partial port](project_parallel_surface_partial_port.md) — cohort computation never landed in TaskMaster or drm-copilot; /parallel-plan cannot reach a ready checkpoint
+- [drm-copilot is the governance upstream](reference_drm_copilot_upstream.md) — check it when a rule/config/library a skill references is missing locally

.claude/agent-memory/parallel-planner/project_parallel_surface_partial_port.md

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+---
+name: parallel-surface-partial-port
+description: The parallel orchestration surface is only partially ported into TaskMaster from drm-copilot; cohort computation never landed in either repo, so parallel-plan cannot reach a ready checkpoint
+metadata:
+  type: project
+---
+
+As of 2026-08-10 the `parallel` orchestration surface in TaskMaster is an **incomplete port** from
+the upstream [[drm-copilot-is-claude-governance-upstream]] repo. Verify current state before
+relying on this — the gaps are expected to close as the port continues.
+
+**Present in TaskMaster:** `.claude/lib/blast-radius/*.psm1` (PowerShell port, includes
+`Test-BlastRadiusConflict`), `.claude/hooks/enforce-parallel-*.ps1`, the six `.claude/skills/parallel-*`
+skills, both `.claude/agents/parallel-*.md`, and settings.json hook wiring. The MCP validators
+`parallel-planner-state` and `parallel-kickoff` dispatch correctly (verified by probe).
+
+**Missing in TaskMaster:** `config/blast-radius.json`, `.claude/rules/parallel-orchestration.md`,
+and `route_id: parallel` in `config/orchestration-routing.json` (routes are only small, large,
+remediation, preparation, epic).
+
+**Missing in BOTH repos:** the cohort-computation library (`compute_cohorts` / Welsh-Powell
+coloring). `git grep -in "compute_cohorts|welsh"` returns nothing tracked in drm-copilot. The
+`feature/parallel-cohort-scheduler-445` branch and its feature folder exist, but no code landed;
+the parallel epic merged F7/F8 (hooks, drift, schemas, validators) without it.
+
+**Why:** the parallel surface was built in drm-copilot and is being distributed into consumer repos
+like TaskMaster; the port is mid-flight and F2 (cohort scheduler) was never implemented upstream.
+
+**How to apply:** `/parallel-plan` cannot produce a valid ready checkpoint in TaskMaster. Cohort
+seeding and the P5 recomputation-parity check both require the absent library, and self-implementing
+the coloring would make the parity check compare an implementation against itself. Halt and report
+rather than fanning out preparation delegations. Note also that the skill's
+`poetry run python -c "from scripts.dev_tools..."` invocation form does not apply here: TaskMaster has
+no `scripts/dev_tools/`, no `pyproject.toml`, and no `poetry.lock` — the port is PowerShell.
+
+Also note drm-copilot's `config/blast-radius.json` is **not** reusable in TaskMaster: its modules
+(`scripts/dev_tools`, `packages/mcp-server`, `extensions/drm-copilot`) and shared surfaces
+(`poetry.lock`, `package-lock.json`) describe drm-copilot's own layout, not a C#/VSTO repo. Copying
+it would under-report contention, the opposite of the fail-closed direction the F1a corrections
+(issue #452 / PR #453) established.

.claude/agent-memory/parallel-planner/reference_drm_copilot_upstream.md

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+---
+name: drm-copilot-is-claude-governance-upstream
+description: C:\Users\DanMoisan\repos\drm-copilot is the upstream source for TaskMaster's .claude governance surface (rules, skills, agents, hooks, orchestration libraries) and the MCP server
+metadata:
+  type: reference
+---
+
+`C:\Users\DanMoisan\repos\drm-copilot` is the upstream repository for TaskMaster's `.claude`
+governance surface and for the `drm-copilot` MCP server itself.
+
+Useful locations there when a TaskMaster governance file seems missing or stale:
+
+- `.claude/rules/`, `.claude/skills/`, `.claude/agents/`, `.claude/hooks/`, `.claude/lib/` — the
+  canonical copies that get distributed into consumer repos.
+- `extensions/drm-copilot/resources/claude-customizations/.claude/**` — the packaged copy shipped
+  by the VS Code extension.
+- `extensions/drm-copilot/src/lib/validate/*.ts` — the TypeScript validators behind the MCP tool
+  `validate_orchestration_artifacts`, including the `parallel-*` artifact types.
+- `config/blast-radius.json` — the blast-radius truth table (drm-copilot-specific; see
+  [[parallel-surface-partial-port]] for why it is not portable as-is).
+
+**How to apply:** when a skill in TaskMaster references a rule file, config, or library that does
+not exist locally, check drm-copilot before concluding the reference is wrong — it usually means the
+port into TaskMaster is incomplete rather than that the skill is stale. Confirm whether the upstream
+artifact is repo-specific before copying it across.