* fix(server): use terminateWithTreeKill in Claude Code provider close()
The Claude Code agent's close() method only called SDK-level cleanup
(query.close/interrupt/return) which may only kill the direct child
process. MCP server processes spawned by the Claude CLI survived as
orphans, accumulating over time and consuming significant memory.
Fix:
- Add onChildProcess callback to ClaudeQueryContext to capture the
spawned child process reference
- Store the child process in ClaudeAgentSession
- In close(), call terminateWithTreeKill() after SDK cleanup to
recursively terminate the entire process tree (claude + MCP children)
- Use 2s graceful (SIGTERM) / 2s force (SIGKILL) timeouts, consistent
with other providers (ACP, Codex, Pi, OpenCode)
Co-Authored-By: Claude <noreply@anthropic.com>
* fix(server): tree-kill old process during query restart to prevent MCP orphans
Greptile review identified a gap: ensureQuery() replaces this.childProcess
when spawning a new query without first killing the old process tree.
During reconnection events, this can leak MCP children from the
previous claude process.
Fix: add terminateWithTreeKill() in the queryRestartNeeded block
after SDK cleanup, before the replacement query spawns.
Co-Authored-By: Claude <noreply@anthropic.com>
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Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
* fix(app): eliminate terminal scroll lag by removing MutationObserver and throttling scroll events
The MutationObserver with subtree:true was firing React setState on every
xterm DOM mutation (character output, cursor blink, scroll line rendering),
causing cascading React re-renders that blocked the main thread and made
the mouse wheel unresponsive on web.
Changes:
- Remove MutationObserver (redundant with ResizeObserver for viewport sizing)
- Throttle scroll handler with requestAnimationFrame to batch setState calls
- Early-return in updateViewportMetrics when metrics unchanged since last emit
- Cancel pending rAF on cleanup to avoid stale updates
Co-Authored-By: TommyLike <tommylikehu@gmail.com>
* Fix terminal scrollbar metric dedupe state
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Co-authored-by: Mohamed Boudra <boudra.moha@gmail.com>
