feat(vscode): use terminal.integrated font settings in Agent Manager xterm

[kilo-code-bot]

Summary

• Agent Manager xterm terminals now read terminal.integrated.fontFamily and terminal.integrated.fontSize (with fallback to editor.fontFamily / editor.fontSize) instead of the --vscode-editor-font-family CSS variable and Kilo's --font-size-base.
• Nerd Font glyphs and powerline symbols set via terminal.integrated.fontFamily now render correctly in terminal tabs — no more missing-glyph boxes.
• A vscode.workspace.onDidChangeConfiguration watcher broadcasts agentManager.terminal.fontChanged to the webview when font settings change at runtime, so live terminals pick up the new font without requiring a reload.
• fontSizeChanged/ready messages (which control the Kilo chat UI font size) no longer propagate to term.options.fontSize — the terminal font is now fully independent of the chat UI font.

Implementation

• terminal-font.ts (new): reads terminal.integrated.* and editor.font* config, exposes readTerminalFont(), affectsTerminalFont(), and watchTerminalFont(). Added to the arch-test VSCODE_ALLOWED list.
• types.ts: adds font: TerminalFont to TerminalCreatedMessage and a new TerminalFontChangedMessage outbound type.
• terminal-routing.ts: adds getTerminalFont() to TerminalRoutingDeps; includes font in every terminal.created post.
• AgentManagerProvider.ts: supplies getTerminalFont dep, sets up a font-change watcher that posts terminal.fontChanged to the webview.
• Webview state.ts: adds TerminalFont interface and font field to TerminalTabState / TerminalCreatedEvent.
• Webview render.tsx: forwards font={term.font} prop to <TerminalTab>.
• Webview TerminalTab.tsx: uses props.font for initial xterm options; handles agentManager.terminal.fontChanged in the message subscription for live updates.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

What Changed (incremental — commit a5f1514685)

• resolveTerminalFont extracted from readTerminalFont as a pure testable function. No logic changed — the extraction is purely for testability.
• Test updated to call resolveTerminalFont directly instead of the VS Code API-dependent readTerminalFont, covering three cases: all-undefined defaults, explicit family+size, and editor-family fallback.

All Previous Issues — Resolved

| File | Previous Issue | Status |
|---|---|
---|
| terminal-font.ts | letterSpacing: 0 / lineHeight: 0 dropped by || undefined | ✅ Fixed in 3cd4628a52 |
| TerminalTab.tsx | Falsy if (font.lineHeight) / if (font.letterSpacing) skipped resets | ✅ Fixed in 3cd4628a52 |

Files Reviewed (12 files)

• .changeset/terminal-integrated-font.md — clean
• packages/kilo-vscode/src/agent-manager/AgentManagerProvider.ts — clean, unsubFont disposed correctly
• packages/kilo-vscode/src/agent-manager/terminal-font.ts — clean; resolveTerminalFont pure-function extraction is correct
• packages/kilo-vscode/src/agent-manager/terminal-routing.ts — clean
• packages/kilo-vscode/src/agent-manager/types.ts — clean
• packages/kilo-vscode/tests/unit/agent-manager-arch.test.ts — clean
• packages/kilo-vscode/tests/unit/agent-manager-terminal-font.test.ts — clean; tests exercise real logic
• packages/kilo-vscode/webview-ui/agent-manager/AgentManagerApp.tsx — clean
• packages/kilo-vscode/webview-ui/agent-manager/terminal/TerminalTab.tsx — clean
• packages/kilo-vscode/webview-ui/agent-manager/terminal/state.ts — clean
• packages/kilo-vscode/webview-ui/src/types/messages/agent-manager.ts — clean
• packages/kilo-vscode/webview-ui/src/types/messages/extension-messages.ts — clean

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_{Reviewed by claude-4.6-sonnet-20260217 · 180,959 tokens}

_{Review guidance: REVIEW.md from base branch main}