Move bug 47 to bugs/ folder

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

.story_kit/stories/upcoming/48_two_column_layout.md

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+---
+name: Two-Column Layout — Chat Left, Panels Right
+test_plan: pending
+---
+
+# Story 48: Two-Column Layout — Chat Left, Panels Right
+
+## User Story
+
+As a user, I want the chat and panels to sit side by side so that the panels don't crowd out the chat history.
+
+## Acceptance Criteria
+
+- [ ] Chat header spans the full width across the top
+- [ ] Below the header, the layout splits into two columns:
+  - **Left column**: Chat messages (scrollable) with chat input pinned at the bottom
+  - **Right column**: All panels (Agent, Review, Gate, Todo, Upcoming) stacked vertically, independently scrollable
+- [ ] The left column takes roughly 60% width, right column 40%
+- [ ] On narrow screens (below ~900px), the layout falls back to a single column with panels stacking below the chat
+- [ ] Chat input is no longer affected by panel height — it stays pinned at the bottom of the left column regardless of how many panels are expanded
+
+## Out of Scope
+
+- Resizable/draggable column divider
+- Collapsible right panel sidebar toggle
+- Removing or consolidating panels