feat(gastown): configurable terminal orientation with drag-to-resize

[jrf0110]

Summary

• Terminal bar can now be positioned at bottom, top, left, or right via a position picker in the tab bar. Position and expanded size are persisted to localStorage.
• Drag-to-resize handle on the inner edge of the terminal bar with min/max constraints (horizontal: 100px–70vh, vertical: 200px–50vw).
• Replaced static pb-[340px] with a TerminalBarPadding client component that dynamically adjusts padding based on position, size, and collapsed state. Collapsed state only reserves the tab bar strip (38px).
• Vertical orientation adapts the tab bar to a column layout with icon-only tabs, and the AlarmStatusPane switches to single-column stacked layout.
• DrawerStack offsets its right position when the terminal is placed on the right side of the viewport.

Closes #1237

Verification

• pnpm typecheck — passes across all workspace packages
• pnpm run format:check (oxfmt) — passes
• pnpm run lint (oxlint + eslint fallback) — passes across all packages
• Pre-push hook (format + lint + typecheck) — passes

Visual Changes

N/A — no screenshots available from CLI. The changes add a position picker (4-option grid popup) and a resize handle to the terminal bar. Vertical orientation renders tabs as icon-only with tooltips.

Reviewer Notes

• The TerminalBarPadding client component was extracted because the layout files are Server Components and can't consume React context directly.
• The DrawerStackRendererWithContext wrapper reads useTerminalBar() to compute the drawer right offset. This is safe because DrawerStackProvider is always rendered inside TerminalBarProvider in both layout files.
• xterm.js auto-refit on resize is already handled by the existing ResizeObserver + fitAddon.fit() in useXtermPty.ts. The MayorTerminalPane additionally re-fits on position/size changes.
• The issue notes that MayorTerminalPane duplicates xterm setup (identified in Fix terminal stability — WebSocket reconnection, resize debounce, control frame filtering #1195) — deduplication is out of scope for this PR.

[kilo-code-bot]

Code Review Summary

Status: 1 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Fix these issues in Kilo Cloud

Issue Details (click to expand)

N/A

Other Observations (not in diff)

Issues found in unchanged code that cannot receive inline comments:

File	Line	Issue
src/components/gastown/TerminalBarContext.tsx	93	Stored size is restored without clampSize, so reopening the terminal on a smaller viewport can exceed the intended min/max size constraints until the user resizes or changes orientation again.

Files Reviewed (2 files)

• src/components/gastown/TerminalBar.tsx - 0 issues
• src/components/gastown/TerminalBarContext.tsx - 1 issue

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_{Reviewed by gpt-5.4-20260305 · 149,963 tokens}