docs(brainstorm-with-docs): добавлены ROADMAP и DEV-HANDOFF на время разработки

- Зачем:
  - решения и рассуждения по скиллу были размазаны по памяти агента,
    README и комментарию у шва; нужен durable in-repo источник, который
    переживёт смену сессии и не зависит от конкретного агента.
- Что:
  - ROADMAP.md: статус v1, отложенные решения (R1 рекомендованный ответ
    на вопрос, R2 дотошность грилла, F1 строка дивергенции, F4 связь с
    grill-with-docs, F5a docs/agents), v2-крупное и отклонённое (F6).
  - DEV-HANDOFF.md: контекст для возобновления, неочевидные обоснования
    (frontmatter-переносимость, гейт под auto mode, агайл), suggested skills.
  - README.md: ссылка на ROADMAP с пометкой про dev-only docs.
- Проверка:
  - markdown-ссылка README → ROADMAP.md резолвится.

agents/.agents/skills/brainstorm-with-docs/ROADMAP.md

@@ -0,0 +1,55 @@
+# Roadmap & backlog — brainstorm-with-docs
+
+Single source of truth for what's done, pending, and deferred. In-repo and
+versioned so it survives across sessions and tools (not just an agent's memory).
+
+## Status
+
+- **v1 — shipped.** Commits `50640d8` (initial) and `f24b342` (review fixes).
+  Working hybrid: context inspection, glossary/`CONTEXT.md` + lightweight ADR
+  discipline, active grilling, option comparison, durable artifacts, and a
+  stop-before-implementation gate that allows investigation but forbids state
+  changes.
+- **Next process step:** live test on real tasks (started ~2026-06-03). Findings
+  feed the decisions below.
+
+## Pending decisions (small, near-term)
+
+- **R1 — restore "recommend an answer per question."** `grill-with-docs` and
+  `grill-me` both require giving a recommended answer with each question; v1
+  dropped it (likely accidental). Cheap to restore in `SKILL.md` step 4.
+  *Decision pending: restore now, or after the first live test.*
+- **R2 — interview relentlessness.** v1 softened grill's "interview relentlessly,
+  walk every branch" into "don't interview forever, move to synthesis" (from
+  superpowers brainstorming). Decide after the live test whether it feels
+  under-rigorous and needs hardening — or whether that's what `grill-with-docs`
+  stays for (see R4).
+- **F1 — divergence one-liner.** Add one `<core_rule>`: "among the options, at
+  least one must be something the user did not already imply." Deliberately
+  deferred to keep the v1 baseline test clean. Marked as `TODO(F1)` at the SEAM
+  in `SKILL.md` step 5. Reconsider right after the first live test.
+- **F4 — relationship to `grill-with-docs`.** This skill overlaps it (grill +
+  CONTEXT/ADR). Decide: document when-to-use-which in `README.md`, or supersede
+  `grill-with-docs`. Not a strict superset (we lack full multi-context, R2).
+- **F5a — read `docs/agents/*.md` in step 1.** On repos using Matt Pocock's
+  skill-config convention, the spec/layout path is more reliable from there than
+  guessing. Cheap addition to the step-1 read list.
+
+## v2 (larger)
+
+- **Divergence phase** at the SEAM (`SKILL.md` step 5): full idea-generation
+  toolkit — axis of variation, archetype stances (MVP / robust / radical),
+  inversion, steal-from-adjacent-domain, cost-shifting, pre-mortem, constraint
+  relaxation, null option. F1 is the cheap precursor to this.
+- **"Design for isolation / clarity" lens** (from superpowers brainstorming):
+  evaluate options by whether each unit has one clear purpose and a clean
+  interface.
+- **Fuller multi-context.** v1 handles a single root `CONTEXT.md` and only
+  mentions `CONTEXT-MAP.md`. Restore grill-with-docs's full model: `CONTEXT-MAP.md`
+  + per-context `CONTEXT.md` + per-context `docs/adr/` + a Relationships section.
+
+## Rejected (do not revisit without new evidence)
+
+- **F6 — "space-separated `allowed-tools` won't parse."** False. Claude Code docs
+  accept space- or comma-separated or YAML list; and `allowed-tools` is
+  pre-approval, not a restriction. No change needed.