fix(jetbrains): skip git and gh probes for removed worktrees

[kirillk]

Issue

No linked issue — reported from a user log where the JetBrains Agent Manager claimed git was not installed on a machine with a working git.

Context

When a worktree directory no longer exists, the backend still spawned git/gh with that directory as the working directory. IntelliJ fails the spawn with Cannot start a process, the working directory '...' does not exist, and the probe classified that as GIT_MISSING:

gh probe result reason=availability value=GIT_MISSING exit=-1 ms=0 stderr=Cannot start a process, the working directory '/Users/.../.kilo/worktrees/snappy-hedgehog' does not exist

That surfaced a sticky "Git is not installed" notification/banner and pushed the probe loop into its slow 60s backoff, even though nothing was wrong with the environment.

A gone directory is normal: a frame or session can still be rooted at a worktree that was deleted (removal does not close that window), a worktree can be deleted outside the plugin (rm -rf, terminal git worktree remove), and git keeps the entry in worktree list as prunable until someone prunes.

Implementation

All in KiloWorktreeRpcApiImpl:

• New sync(root) reconciles git metadata with the disk before any probe: bails out when root itself is gone, prunes when any listed entry is prunable or its checkout is missing, re-lists, and drops entries without a directory. stats() and prStatus() now source their worktrees from it, and in prStatus() the sync runs before ghAvailable() so a deleted worktree is pruned rather than probed.
• ghAvailable() and probeGh() check the directory first and return OK without caching, so a dead directory reports nothing instead of poisoning the shared ghCache for every caller.
• branchStatus() returns an empty DTO for a missing directory instead of running git there.
• New badDir() covers the residual race where the directory disappears between the check and the spawn: a working-directory spawn failure is no longer evidence that git is uninstalled.

Deliberately not in scope: the frontend still polls project.basePath for a project opened on a deleted worktree. This PR makes those probes harmless; stopping them (closing or rerouting such a project/session on removal) is a separate change.

Screenshots / Video

N/A — no visual changes; the user-visible effect is the absence of a false notification.

How to Test

Manual/local verification

• ./gradlew typecheck from packages/kilo-jetbrains/ — passed (agent)
• ./gradlew :backend:test from packages/kilo-jetbrains/ — passed (agent), including four new tests: stats prunes and drops a worktree deleted from disk, ghStatus/prStatus on a removed directory report OK, and badDir distinguishes a dead working directory from a missing git binary

Reviewer test steps

1. Open a repo in the IDE and create a worktree from the Agent Manager
2. Open that worktree as its own project, then delete the worktree directory from a terminal (rm -rf .kilo/worktrees/<name>)
3. Confirm no "Git is not installed" notification or banner appears in either window, and the idea.log shows gh probe skipped ... missing=true / worktree sync skipped instead of value=GIT_MISSING
4. Back in the main project, confirm git worktree list --porcelain no longer lists the deleted worktree after a stats refresh

Blocked checks and substitute verification

• None

Checklist

• Issue linked above, or exception explained
• Tests/verification described
• Screenshots/video included for visual changes, or marked N/A
• Changeset considered for user-facing changes
• I personally reviewed the diff and can explain the changes, including any AI-assisted work.

Get in Touch

N/A

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (2 files)

• packages/kilo-jetbrains/backend/src/main/kotlin/ai/kilocode/backend/rpc/KiloWorktreeRpcApiImpl.kt
• packages/kilo-jetbrains/backend/src/test/kotlin/ai/kilocode/backend/rpc/KiloWorktreeRpcApiImplTest.kt

Previous Review Summaries (2 snapshots, latest commit 835c9f1)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit 835c9f1)

Status: No Issues Found | Recommendation: Merge

Files Reviewed (2 files)

• packages/kilo-jetbrains/backend/src/main/kotlin/ai/kilocode/backend/rpc/KiloWorktreeRpcApiImpl.kt
• packages/kilo-jetbrains/backend/src/test/kotlin/ai/kilocode/backend/rpc/KiloWorktreeRpcApiImplTest.kt

Previous review (commit 66e6871)

Status: 1 Issues Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	1
SUGGESTION	0

Issue Details (click to expand)

WARNING

File	Line	Issue
packages/kilo-jetbrains/backend/src/main/kotlin/ai/kilocode/backend/rpc/KiloWorktreeRpcApiImpl.kt	194	prStatus returns OK when git is missing, which can clear a real GIT_MISSING banner

Files Reviewed (3 files)

• .changeset/worktree-probe-missing-dir.md - 0 issues
• packages/kilo-jetbrains/backend/src/main/kotlin/ai/kilocode/backend/rpc/KiloWorktreeRpcApiImpl.kt - 1 issue
• packages/kilo-jetbrains/backend/src/test/kotlin/ai/kilocode/backend/rpc/KiloWorktreeRpcApiImplTest.kt - 0 issues

Fix these issues in Kilo Cloud

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