Release v1.0.0 — concept-prototype/vertical-slice split, workflow restructure, polish (#50)

* Add /vertical-slice skill, prototype overhaul, and workflow integration

- Add /vertical-slice skill for pre-production validation (Phase 4 gate)
- Overhaul /prototype skill with two-mode design: concept prototype (Phase 1)
  vs vertical slice (Phase 4), with clearer differentiation and higher standards for VS
- Update prototyper agent to own both prototype and vertical-slice workflows
- Add prototype-report.md and vertical-slice-report.md output templates
- Update WORKFLOW-GUIDE, quick-start, skills-reference, agent-coordination-map,
  and skill-flow-diagrams to fully integrate both skills into the 7-phase pipeline
- Remove orphaned empty quick-prototype/ directory

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

* sync v1 counts + polish

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

* Add entity inventory flow, relax vertical-slice gate, improve UX authoring prompts

- /asset-spec: new Phase 0b entity & screen inventory when no argument and no
  existing inventory — reads GDDs/art-bible, proposes categorized list, writes
  design/assets/entity-inventory.md collaboratively
- /asset-spec: entity/character target falls back to inline user description
  when no source doc exists, rather than failing
- /gate-check: vertical slice changed from blocking to CONCERNS-only when
  absent; built-but-broken slice still fails; adds entity inventory as gate artifact
- /ux-design: convert inline approval prompts to AskUserQuestion for structured
  option capture at key authoring decision points
- workflow-catalog.yaml: entity-inventory step added to pre-production; UX spec
  min_count raised to 3; vertical-slice and prototype marked required: false with
  updated descriptions
- .gitignore: exclude marrow/ eval tooling directory

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

* Add missing AskUserQuestion widgets to 7 skills

Audit found 11 decision points across 7 skills where structured option
prompts were missing — using plain text, auto-selection, or no gate at all.

Skills patched:
- create-epics: per-epic approval + producer CONCERNS verdict
- sprint-plan: producer CONCERNS verdict with scope/timeline options
- milestone-review: AT RISK / OFF TRACK producer verdicts require acknowledgement
- retrospective: existing-retro handling converted from plain text [A]/[B]
- quick-design: classification confirmation + draft approve/revise/redirect
- tech-debt add mode: category (6 options) + effort (S/M/L/XL) structured capture
- regression-suite: no-arg mode selection instead of silent auto-detect
- hotfix: severity confirmation gate before workflow begins

Also added AskUserQuestion to allowed-tools headers for retrospective,
quick-design, tech-debt, regression-suite, and hotfix.

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

* Prep v1 stable: fix WORKFLOW-GUIDE counts, stale agent names, and skill model fields

- WORKFLOW-GUIDE.md: correct agent count (48→49), skill count (66/68→73),
  add 6 missing skills to Appendix B, fix Creative category count (2→4),
  replace 3 non-existent agent names with correct ue-*/unity-* specialists,
  add missing godot-csharp/gdextension specialists to hierarchy,
  fix production/stories/ paths → production/epics/
- coordination-rules.md: replace "not yet used" with opt-in env var note
- quick-start.md: rename duplicate "Validate the concept" label → "Prototype the mechanic"
- skill-flow-diagrams.md: remove duplicate legacy UX pipeline section
- All 62 skills missing model: field now have explicit model: sonnet

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

* fix: comprehensive skill audit — consistency, UX, and flow gaps

Two-pass audit fixing ~35 bugs across 41 files.

Pre-production flow:
- Brainstorm next-steps split into Path A (design-first) and Path B
  (prototype-first) — eliminates "prototype after architecture" confusion
- /architecture-review added to pre-production flow in brainstorm and
  create-architecture handoffs
- gate-check traceability check corrected to requirements-traceability.md
- dev-story TR registry error now points to /architecture-review (not /create-epics)
- start now writes production/stage.txt on first onboarding

AskUserQuestion gaps filled:
- balance-check, code-review, hotfix, day-one-patch, consistency-check
  all gain closing widgets and/or missing allowed-tools declarations
- hotfix git branch creation now requires user confirmation
- sprint-plan review-mode setup moved to Phase 0 (before gates run)
- team-combat gains architecture→implementation approval gate
- design-review APPROVED path consolidated from 3 widgets to 1 multiSelect

All 9 team-* skills:
- Phase 0 review-mode resolution added (solo/lean/full now respected)
- team-audio output path fixed (design/gdd/ → design/audio/)
- team-level final doc compilation delegated to level-designer subagent
- team-narrative localization-lead added to composition list
- team-qa sprint path fixed (flat files, not directories)
- team-release NO-GO override captures written justification
- team-live-ops Cancel verdict now explicitly BLOCKED

Other fixes:
- Art bible path standardized to design/art/art-bible.md (3 wrong refs)
- AD-PHASE-GATE added to lean-mode skip list in director-gates.md
- design-system duplicate 5d heading fixed; skeleton decline path added;
  mandatory agent spawns now respect review mode
- story-readiness acceptance criteria thresholds now type-aware
- create-stories gains multi-ADR and no-ADR handling guidance
- consistency-check creates docs/consistency-failures.md on first run
- retrospective frontmatter bash injection replaced with explicit Bash call
- smoke-check ls -t gains PowerShell fallback
- Conventional Commits format documented in coding-standards.md
- gate-check: ADR acceptance gate, QA plan check, chain-of-verification
  tool-action requirement all added

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

* fix: expose --review flag in argument-hints for all team-* skills

All 9 team-* skills already implement Phase 0 review-mode resolution
internally (full/lean/solo), but none advertised [--review full|lean|solo]
in their argument-hint. Users had no way to discover the per-run override.

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

* docs: add SECURITY.md with coordinated disclosure policy

Defines scope, reporting process (GitHub private vulnerability reporting),
contributor security guidelines for hooks/skills/agents, and 90-day
coordinated disclosure timeline.

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

* docs: add CONTRIBUTING.md with framework contribution guidelines

Covers what PRs are welcome, skill/hook/agent technical requirements,
the collaborative principle, testing expectations, commit format,
and platform compatibility requirements.

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

* docs: add v1.0.0-beta → v1.0 upgrade section to UPGRADING.md

Documents the 17 commits since the beta tag: new /vertical-slice gate,
entity inventory flow in /map-systems, AskUserQuestion widgets across
7 skills, --review flag exposure on team-* skills, bug fixes
(#21, #36, #42, #43, #45), and the new CONTRIBUTING.md and SECURITY.md.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

.claude/skills/brainstorm/SKILL.md

@@ -4,6 +4,7 @@ description: "Guided game concept ideation — from zero idea to a structured ga
 argument-hint: "[genre or theme hint, or 'open'] [--review full|lean|solo]"
 user-invocable: true
 allowed-tools: Read, Glob, Grep, Write, WebSearch, Task, AskUserQuestion
+model: sonnet
 ---
 
 When this skill is invoked:
@@ -308,18 +309,25 @@ If yes, generate the document using the template at `.claude/docs/templates/game
 
 6. **Suggest next steps** (in this order — this is the professional studio
    pre-production pipeline). List ALL steps — do not abbreviate or truncate:
+
+**Path A — Design-First** (recommended if the concept is well-defined):
    1. "Run `/setup-engine` to configure the engine and populate version-aware reference docs"
-   2. "Run `/art-bible` to create the visual identity specification — do this BEFORE writing GDDs. The art bible gates asset production and shapes technical architecture decisions (rendering, VFX, UI systems)."
+   2. "Run `/art-bible` to create the visual identity specification — do this BEFORE writing GDDs. **The art bible is required before the Technical Setup gate.** It gates asset production and shapes technical architecture decisions (rendering, VFX, UI systems)."
    3. "Use `/design-review design/gdd/game-concept.md` to validate concept completeness before going downstream"
    4. "Discuss vision with the `creative-director` agent for pillar refinement"
    5. "Decompose the concept into individual systems with `/map-systems` — maps dependencies, assigns priorities, and creates the systems index"
-   5. "Author per-system GDDs with `/design-system` — guided, section-by-section GDD writing for each system identified in step 4"
-   6. "Plan the technical architecture with `/create-architecture` — produces the master architecture blueprint and Required ADR list"
-   7. "Record key architectural decisions with `/architecture-decision (×N)` — write one ADR per decision in the Required ADR list from `/create-architecture`"
-   8. "Validate readiness to advance with `/gate-check` — phase gate before committing to production"
-   9. "Prototype the riskiest system with `/prototype [core-mechanic]` — validate the core loop before full implementation"
-   10. "Run `/playtest-report` after the prototype to validate the core hypothesis"
-   11. "If validated, plan the first sprint with `/sprint-plan new`"
+   6. "Author per-system GDDs with `/design-system` — guided, section-by-section GDD writing for each system identified in step 5"
+   7. "Plan the technical architecture with `/create-architecture` — produces the master architecture blueprint and Required ADR list"
+   8. "Record key architectural decisions with `/architecture-decision (×N)` — write one ADR per decision in the Required ADR list from `/create-architecture`"
+   9. "Run `/architecture-review` — bootstraps the TR registry and Requirements Traceability Matrix from your GDDs and ADRs (required before the Pre-Production gate)"
+   10. "Validate readiness to advance with `/gate-check` — phase gate before committing to production"
+
+**Path B — Prototype-First** (use if the core mechanic is unproven or the concept needs validation):
+   1. "Run `/setup-engine` to configure the engine"
+   2. "Run `/prototype [core-mechanic]` — validate the core idea is fun before writing any GDDs (1–3 days throwaway code)"
+   3. "If prototype PROCEEDS: run `/art-bible`, then continue with Path A steps 5–10 above, using prototype learnings to inform your GDDs"
+   4. "If prototype PIVOTS: return to `/brainstorm` with the learnings and reshape the concept"
+   5. "After full design and architecture, build the `/vertical-slice` to validate production readiness before committing to sprints"
 
 7. **Output a summary** with the chosen concept's elevator pitch, pillars,
    primary player type, engine recommendation, biggest risk, and file path.
@@ -347,4 +355,5 @@ After the game concept is written, follow the pre-production pipeline in order:
 3. `/map-systems` — decompose the concept into individual systems with dependencies
 4. `/design-system [first-system]` — author per-system GDDs in dependency order
 5. `/create-architecture` — produce the master architecture blueprint
-6. `/gate-check pre-production` — validate readiness before committing to production
+6. `/architecture-review` — bootstrap TR registry and Requirements Traceability Matrix
+7. `/gate-check pre-production` — validate readiness before committing to production