Use session working directory in loc-breakdown canvas

[mitchdenny]

Description

Fixes an error when opening the LOC breakdown canvas (load@http://127.0.0.1:.../:98:34).

Root cause

Forked extension processes inherit a process.cwd() of ~/.copilot, which is not a git repo. When the canvas was opened without an explicit cwd input, buildReport ran git commands in ~/.copilot, the /data endpoint returned HTTP 500, and the client-side load() threw at the throw new Error("HTTP " + ...) line.

Fix

The Copilot SDK supplies ctx.session.workingDirectory to canvas open / action handlers (the active session's working directory — i.e. the user's worktree or repo). The open handler and the refresh action's fallback path now prefer that over process.cwd():

cwd: input.cwd || ctx.session?.workingDirectory || process.cwd()

Verification

Reloaded the extension and opened the canvas locally — /data now returns 200 with the expected report (resolved cwd is the worktree, base is origin/main).

[github-actions]

🚀 Dogfood this PR with:

⚠️ WARNING: Do not do this without first carefully reviewing the code of this PR to satisfy yourself it is safe.

curl -fsSL https://raw.githubusercontent.com/microsoft/aspire/main/eng/scripts/get-aspire-cli-pr.sh | bash -s -- 17862

Or

• Run remotely in PowerShell:

iex "& { $(irm https://raw.githubusercontent.com/microsoft/aspire/main/eng/scripts/get-aspire-cli-pr.ps1) } 17862"

[Copilot]

Pull request overview

This PR fixes a runtime error when opening the LOC breakdown canvas by ensuring git operations run in the active session’s repository/worktree directory instead of the forked extension process’s default process.cwd() (often ~/.copilot, which is not a git repo).

Changes:

• Update the canvas open handler to prefer ctx.session?.workingDirectory when input.cwd is not provided.
• Update the refresh action fallback to use ctx.session?.workingDirectory before process.cwd() when no server entry/options exist.

Show a summary per file

File	Description
.github/extensions/loc-breakdown/extension.mjs	Uses the session working directory as the default/fallback cwd for report generation to avoid running git in a non-repo directory.

Copilot's findings

• Files reviewed: 1/1 changed files
• Comments generated: 0

[radical]

Left two small nits; no blocking concerns from my pass.

[github-actions]

❓ CLI E2E Tests unknown — 113 passed, 0 failed, 2 unknown (commit 8b52c94)

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_{📹 Recordings uploaded automatically from CI run #26912651250}

[aspire-repo-bot]

✅ No documentation update needed.

docs_optional → build_or_ci_only

No signals triggered (signal_count: 0). Both changed files are under .github/extensions/loc-breakdown/:

• .github/extensions/loc-breakdown/extension.mjs — bug fix to use ctx.session?.workingDirectory over process.cwd() in a Copilot canvas extension
• .github/extensions/loc-breakdown/README.md — updated the cwd input description to reflect the new default behavior

This is a bug fix to an internal Copilot canvas extension under .github/. It does not affect any user-facing Aspire feature, public API, CLI option, or documented integration. No docs update is needed on microsoft/aspire.dev.