Bundles a string of multi-repo fixes and refactors that came up while
testing the feature end-to-end:
- workspace_path stored on multi-repo TaskEnvironment was one level too
high, so agentctl booted with the wrong WorkDir on cold start; fixed
in resolveTaskEnvWorkspacePath + GetWorkspaceInfoForSession.
- Stage/Unstage/Discard/Commit/Revert/Reset/Amend now thread `repo`
through agentctl client → WS handler → frontend hook → SessionGit
fan-out, so the right git repo is targeted (was running at the task
root, which isn't a git repo for multi-repo tasks).
- agentctl GitLog is multi-repo aware: when no `repo` is specified and
per-repo trackers exist, fans out one log per repo and merges sorted
newest-first with RepositoryName stamped on each commit.
- Per-repo grouping for files (Changes panel) and commits, with
collapsible group headers; commits section defaults to collapsed.
Algorithm extracted into one generic groupByRepositoryName helper
(was copy-pasted three times).
- Task creation dialog rewritten around a unified `fs.repositories[]`
list — no more "primary vs extras" split. Chip-style row with one
pill per repo + branch, "+" to add, x to remove, GitHub URL toggle
inline. Discovered (on-machine) repos appear in any chip's dropdown.
Removes ~6 fields and 3 helpers from the dialog state.
- Branch listing endpoints collapsed to one:
GET /workspaces/:id/branches?repository_id=X | path=Y
Frontend collapses to a single useBranches hook with a tagged-union
source. Drops two HTTP routes, two service methods, two API client
funcs, and one whole hook file.
Tests added across the chain: workspace_path resolver, sort-commits-
by-date, manager poll-mode propagation, RepoSubpaths, chip grouping
+ collapse + per-repo isLatest, group-by-repo helper, dialog payload
builder + chip wiring + discovered-repo flow.