docs: add sprint status tracking for 5 epics and 20 stories

All stories in backlog status, ready for implementation starting
with Epic 1 Story 1.1 (project scaffold).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

bmad/_bmad-output/implementation-artifacts/sprint-status.yaml

@@ -0,0 +1,83 @@
+# generated: 2026-04-13
+# last_updated: 2026-04-13
+# project: try-bmad
+# project_key: NOKEY
+# tracking_system: file-system
+# story_location: _bmad-output/implementation-artifacts
+
+# STATUS DEFINITIONS:
+# ==================
+# Epic Status:
+#   - backlog: Epic not yet started
+#   - in-progress: Epic actively being worked on
+#   - done: All stories in epic completed
+#
+# Epic Status Transitions:
+#   - backlog → in-progress: Automatically when first story is created (via create-story)
+#   - in-progress → done: Manually when all stories reach 'done' status
+#
+# Story Status:
+#   - backlog: Story only exists in epic file
+#   - ready-for-dev: Story file created in stories folder
+#   - in-progress: Developer actively working on implementation
+#   - review: Ready for code review (via Dev's code-review workflow)
+#   - done: Story completed
+#
+# Retrospective Status:
+#   - optional: Can be completed but not required
+#   - done: Retrospective has been completed
+#
+# WORKFLOW NOTES:
+# ===============
+# - Epic transitions to 'in-progress' automatically when first story is created
+# - Stories can be worked in parallel if team capacity allows
+# - Developer typically creates next story after previous one is 'done' to incorporate learnings
+# - Dev moves story to 'review', then runs code-review (fresh context, different LLM recommended)
+
+generated: 2026-04-13
+last_updated: 2026-04-13
+project: try-bmad
+project_key: NOKEY
+tracking_system: file-system
+story_location: _bmad-output/implementation-artifacts
+
+development_status:
+  # Epic 1: Play a Complete Game (Desktop)
+  epic-1: backlog
+  1-1-project-scaffold-and-dev-environment: backlog
+  1-2-game-logic-module: backlog
+  1-3-game-board-and-tile-rendering: backlog
+  1-4-game-header-score-display-and-new-game-button: backlog
+  1-5-keyboard-input-and-interactive-gameplay: backlog
+  1-6-win-and-game-over-overlays: backlog
+  epic-1-retrospective: optional
+
+  # Epic 2: Save Progress & Keep Playing
+  epic-2: backlog
+  2-1-best-score-tracking: backlog
+  2-2-game-state-persistence: backlog
+  2-3-keep-playing-mode: backlog
+  epic-2-retrospective: optional
+
+  # Epic 3: Smooth Animations & Game Feel
+  epic-3: backlog
+  3-1-tile-slide-animation: backlog
+  3-2-tile-spawn-pop-animation: backlog
+  3-3-tile-merge-bounce-animation: backlog
+  3-4-score-float-animation: backlog
+  3-5-win-and-game-over-overlay-fade-animation: backlog
+  epic-3-retrospective: optional
+
+  # Epic 4: Mobile & Multi-Input Support
+  epic-4: backlog
+  4-1-wasd-and-vim-keyboard-support: backlog
+  4-2-touch-and-swipe-input: backlog
+  4-3-responsive-layout: backlog
+  epic-4-retrospective: optional
+
+  # Epic 5: Visual Polish & Deployment
+  epic-5: backlog
+  5-1-tile-glow-effects: backlog
+  5-2-dynamic-tile-font-sizing: backlog
+  5-3-github-pages-deployment: backlog
+  epic-5-retrospective: optional