* feat(orchestrator): persist N-entry FIFO message queue
Replaces the single-slot, latest-wins, in-memory queue with a SQLite-backed
FIFO queue (default cap 10 per session, configurable via
KANDEV_QUEUE_MAX_PER_SESSION). Drain stays one-per-turn so each entry gets its
own user message and `on_turn_*` workflow cycle. Inter-task `message_task_kandev`
returns a structured `queue_full` error with sender attribution when the
target session is saturated, so the calling LLM can decide whether to retry.
Surfaces a new WS action `message.queue.remove` for single-entry deletion;
`message.queue.cancel` now means clear-all. Edit/remove are keyed on the
entry's UUID, returning `entry_not_found` when atomic-take won the drain race.
* feat(web): N-entry queue state, API, and optimistic hook
Replaces the single-slot QueueStatus with an ordered `entries[]` per session
plus capacity meta (`count`, `max`). API exposes typed `QueueFullError` and
`QueueEntryNotFoundError`; the hook surfaces optimistic edit/remove with
drain-race rollback (refetch on `entry_not_found`).
* feat(web): inline ghost-message queue UI with sender chips
Replaces the floating QueuedMessageIndicator overlay with a stack of ghost
messages rendered above the chat input. Each ghost shows a sender chip
(user / agent) and per-entry edit/remove. A small "n/max queued · clear all"
pill summarizes capacity. Inter-task entries are visually distinct and edit
is gated to the original sender.
* fix(queue): address review — auth guard, TOCTOU, error UX
- Add `messagequeue.QueuedByUser` / `QueuedByAgent` constants and centralize
the `queue_full` error code so the WS and MCP handlers stay in sync.
- WS `message.queue.{add,append,update}` default empty user_id to QueuedByUser
so the UpdateContent ownership guard always runs against a non-empty owner;
inter-task entries (`queued_by="agent"`) can no longer be overwritten by
user-initiated edits even when `user_id` is omitted from the payload.
- memoryRepository: hold the mutex through the whole append-or-insert path
(prior split released the lock between tail-check and Insert, allowing two
same-sender callers to race past coalescing). TransferSession now shifts
source positions past the destination's max so transferred entries always
drain after pre-existing destination entries, matching SQLite semantics.
- Frontend: surface edit/clear/remove failures via `sonner` toasts (drain race
→ "message already sent"); exit edit mode on failure instead of leaving the
textarea silently stuck. Hide the remove button on read-only (agent) ghosts.
- `useQueue.clearAll` no longer derives `max` from pre-clear entry count;
resets to `metaMax ?? 0` so the next status_changed event lands authoritative
capacity.
- `senderKindOf` drops the unreachable metadata fallback; route on `queued_by`
alone since `dispatchTaskMessage` always sets it.
- Test loggers now write to stderr per CLAUDE.md "stderr for logs" guideline.
* test(web): align queue e2e selectors with new ghost-message UI
The ghost-message rewrite renamed button titles ("Cancel queued message"
→ "Remove queued message", "Edit message" → "Edit queued message") and
introduced a `data-testid="queued-ghost-list"` container. The
`message-queue.spec.ts` Playwright tests still pointed at the old titles.
* fix(queue): address second review pass — auth, drain race, tests
- WS handlers (`add` / `append` / `update`) now reject `user_id="agent"`
outright, closing the gap a hostile WS client could exploit by
impersonating the inter-task sender identity to overwrite agent
entries (greptile P1).
- WS `update` / `remove` now require `session_id` so the post-mutation
`MessageQueueStatusChanged` broadcast can never be silently skipped.
- `sqliteRepository.TakeHead` checks `RowsAffected()` after DELETE;
when two concurrent take callers race past the busy-timeout the
loser sees 0 affected rows and now returns `nil, nil` instead of
the already-drained message (would otherwise dispatch the same
prompt twice).
- `Service.GetStatus` returns `Entries: []` instead of `nil` on the
error path so the wire shape stays consistent (frontend already
guards but strict consumers wouldn't tolerate the type mismatch).
- New tests: `queue-api.test.ts` covers `rethrowQueueError` mappings
(queue_full / entry_not_found / generic / Error pass-through);
`session-slice.upsert.test.ts` covers `setQueueEntries`,
`removeQueueEntry`, and `clearQueueStatus`. Backend gains an
agent-impersonation handler test.
- `rethrowQueueError` now surfaces `WSError.message` for non-queue
errors instead of stringifying the whole object.
- Cleanup: replace unused `a, c := ...` discards in service_test
with `_, _ = ...`.
* fix(queue): scope update/remove by session_id (cross-session deletion guard)
The MCP `queue_full` error payload deliberately discloses sibling-task
entry IDs (so the calling agent's LLM can reason about the wedge state).
Without a session_id filter on `DeleteByID` / `UpdateContent`, a hostile
agent that received that payload could call `wsRemoveEntry` /
`wsUpdateMessage` against another task's entries and delete or rewrite
them — only the per-entry UUID was being checked.
- `Repository.UpdateContent` and `Repository.DeleteByID` now require
`sessionID` and add `AND session_id = ?` to the SQL guard. The memory
repo mirrors the scope (lookup keyed on session before the entry scan).
- `Service.UpdateMessage` / `Service.RemoveEntry` take `sessionID`; the
WS handlers thread `req.SessionID` through (already validated as
non-empty in the previous fixup).
- TypeScript: `session_id` is now required on `updateQueuedMessage` /
`removeQueuedEntry` params so callers fail at compile time, matching
the backend contract.
- Tests cover the cross-session attack: `RemoveEntry`/`UpdateMessage`
with an attacker-supplied session_id but a real entry id from another
session must return `ErrEntryNotFound` and leave the victim entry
untouched. SQLite repo gets parallel coverage.
* fix(queue): propagate transfer error + tighten WSError narrowing
- `Service.TransferSession` now returns an error so callers can fail
closed instead of silently leaving entries orphaned on the previous
session. The two existing call sites pick the right policy:
`switchSessionForStep` (reusing an existing session) propagates the
error so the workflow switch aborts; the new-session path logs and
continues, since the new session is already committed and rolling
back here would leave a half-switched workflow.
- `asWSError` now also narrows on `message` / `details`, so WS payloads
without a `code` field are still mapped to a meaningful `Error.message`
via `rethrowQueueError` (instead of "[object Object]"). Native
`Error` instances explicitly skip the WS-error branch so they pass
through untouched, preserving the existing pass-through guarantee.
- `queue-api.test.ts`: `expect.assertions(N)` on the catch-only tests
so a missing throw fails the test instead of silently passing.
* fix(queue): check TransferSession error in service tests
The TransferSession signature change in 83abe6d7 broke errcheck on two
test sites that hadn't been updated. Wrap them in require.NoError.
* feat(backend): plan revision history with checkpoint/revert
Persist every plan edit as an immutable TaskPlanRevision with author
attribution (agent vs user) and expose WS actions to list, fetch, and
revert to past revisions. Emits task_plan.revision.created and
task_plan.reverted events so the UI can react in real time.
* feat(web): plan revision history UI with rewind to past versions
Add a rewind button to the plan panel that opens a revisions list
showing each checkpoint with author (agent name or user) and timestamp,
and lets the user restore any past revision as the new head. Plan
state, hooks, and WS handlers are extended to load, cache, and react
to revision-created/reverted events.
* test(web): e2e coverage for plan checkpointing and rewind
Cover the full revision flow: plan edit creates a checkpoint,
the revisions panel lists authors and timestamps, and reverting
restores the selected revision as the new head. Extends session
page object and backend fixtures with revision-related helpers.
* fix(web): stabilize plan revisions state and avoid re-render loop
Zustand selector returned a fresh [] for missing revisions, fanning out
re-renders that tripped React's infinite-loop guard when the plan panel
mounted. Swap to a frozen empty-array sentinel, auto-load revisions on
mount so WS events fired before connect aren't lost, and gate the
popover's on-open fetch so reopening doesn't re-sort rows mid-click.
* test(web): make plan checkpointing e2e resilient to agent auto-layout
Agent-authored plan writes auto-open the plan panel and can push the
chat tab inactive, so the chat idle placeholder isn't always visible
once the agent finishes. Accept either chat or plan panel as the idle
signal, make openPlanPanel and openRewind idempotent, reopen the
popover after a revert cancel (the confirm dialog closes it), and drop
the toast assertion since no Toaster is mounted in the app.
* fix(backend): atomic plan revision write + review polish
- Add `WritePlanRevision(ctx, head, rev, coalesceLatestID)` repository method
that wraps HEAD upsert + MAX+1 compute + insert/merge in a single write tx,
closing the TOCTOU race on `revision_number` and partial-failure divergence
between HEAD and history. `upsertPlan` and `RevertPlan` both route through it.
- Add `ErrRevisionIDRequired`; return it for empty `TargetRevisionID` (was
previously conflated with `ErrRevisionNotFound`). Handler maps to validation.
- Backfill fallback `author_kind` changed `"user"` → `"agent"` to match
`CreateTaskPlan` and the column default.
- Extract shared `revisionSelectCols` constant; rename `max` local (shadowed
Go builtin) and `dto` local (shadowed package name).
* fix(web): address plan-revisions review feedback
- `mcpWrite` uses `JSON.stringify(content).slice(1, -1)` to escape backslashes,
quotes, and control chars in one pass — closes the CodeQL finding.
- `clearTaskPlan` now evicts `revisionContentCache` entries for the task's
revisions before dropping the maps, preventing orphaned cache growth.
- `RevertConfirmDialog` wraps `onRevert` in try/catch/finally so rejections
surface a toast and the dialog always dismisses.
- Hoist `TaskPlanRevision` import in `task-plan-panel.tsx`.
- `RevisionRow` derives relative time from props every render with a 30s tick,
so prop changes refresh immediately.
- Strengthen author-switch e2e with `.not.toBeEmpty()` to also reject empty or
truncated renders.
* fix(web): evict revision content cache on coalesced update
Coalesced writes update an existing revision's content on the backend, but
the WS `upsertPlanRevision` payload carries only metadata. Without eviction,
a cached preview of the revision stays stale after the agent re-writes the
plan within the coalesce window.
* fix(web): plan history UI polish from local testing
- Drop the redundant "Plan" title in the panel header bar; the dockview/mobile
tab already labels the panel.
- Author display: show "You" with the user icon for user-authored revisions,
and the agent profile name with the AgentLogo (resolved from the active
session's `agent_profile_snapshot.agent_name`) for agent revisions, matching
the icon used elsewhere in the app.
- Replace ScrollArea with a plain `max-h-96 overflow-y-auto` div so the
popover stays bounded when revision counts grow past ~7 rows.
- Drop the em dash from the revert dialog description.
* feat(web): add lineDiff helper for plan revision compare
Tiny wrapper around the `diff` package that classifies each line as add /
remove / context and strips the trailing-newline phantom entry. Also exposes
`diffSummary` for the dialog header counts. Pure functions; backed by Vitest.
* feat(web): plan revision preview + compare state
Adds two task-scoped store keys for the new dialogs:
- `previewRevisionIdByTaskId` — at most one open preview per task; cleared on
`clearTaskPlan`.
- `comparePairByTaskId` — ordered 2-slot pair. `toggleComparePair` reuses a
`nextPair` helper that handles unselect (already-picked id), fill (open
slot), and FIFO eviction (full pair). `clearTaskPlan` resets it too.
* feat(web): plan revision preview + diff dialogs
- `useTaskPlan` exposes `previewRevisionId`, `setPreviewRevision`,
`comparePair`, `toggleCompareSelection`, `clearComparePair` (extracted into
`usePreviewCompareState` to keep the surrounding hook within the size cap).
- New `PlanRevisionPreviewDialog`: read-only modal for a single revision with
Restore + "Compare with current" CTAs. Restore routes through the existing
RevertConfirmDialog so the confirmation copy stays consistent.
- New `PlanRevisionDiffDialog`: line-level unified diff between two revisions
with adds/removes highlighted; orders the pair by revision_number so the
older one is always "before"; Restore targets the older side.
- Popover row split into a clickable body (opens preview), a Compare toggle
(icon button per row), and the existing Revert button. Compare chips appear
at the top of the popover with a Diff CTA when both slots are filled.
- Both dialogs are remounted via key on revision/pair change so loader state
resets without ESLint-flagged setState-in-effect resets.
* test(web): e2e coverage for plan preview and compare-diff dialogs
Extends the SessionPage POM with locators for the new preview and diff
dialogs (chips, compare toggle, restore buttons, body + summary). Adds two
scenarios in plan-checkpointing.spec.ts:
- Click a revision row body → preview shows the right content; the Restore
CTA opens the existing confirm dialog and the revert lands.
- Toggle compare on two revisions → diff opens with v1 → v2 ordering and
shows at least one add and one remove line; the Restore CTA targets the
older side.
* feat(web): render markdown in plan preview + diff dialogs
Adds a shared `PlanReadOnlyMarkdown` Tiptap renderer that reuses the same
StarterKit + tiptap-markdown + tables/tasks/code-block extensions as the live
plan editor (minus interactive bits — slash menu, drag handles, comment
marks). Wired into both dialogs:
- Preview replaces the raw `<pre>` block with the rendered Tiptap view.
- Diff dialog now stacks two rendered sides (Before / After) with red/green
tinted borders, kept above the existing line-level breakdown so the user
gets both rendered comparison and an exact textual change list.
Tiptap doesn't ship a free diff/track-changes extension (it's part of Tiptap
Pro), so the side-by-side rendering plus the line-level list together stand
in for that.
* fix(web): plan diff dialog — text-only with unified/split modes
Following local feedback:
- Drop the rendered-markdown side-by-side panes from the diff dialog. Diff
view is text-only again, like a code review.
- Add a Unified / Split mode toggle. Split mode aligns each remove with the
adjacent add on the same row (single-line edits stay paired) and stripes
empty cells where one side has nothing.
- Fix the highlight-truncation bug: long lines used to lose their tinted
background past the viewport on horizontal scroll because the row width
was capped to the visible area. Rows now use `min-w-full w-max` so the
background extends through the full scroll width.
Preview dialog keeps the rendered Tiptap markdown — only the diff reverted
to plain text.
E2E covers both modes and the cell kinds.
* feat(web): formatPreciseTime util for minute-level timestamps
Returns 'just now', 'Xs ago', 'Xm ago' for the first hour, then 'Today, HH:MM',
'Yesterday, HH:MM', or '{Mon} {DD}[, YYYY], HH:MM' for older entries — keeps
exact minute-of-day visible instead of decaying to 'yesterday'/'2d ago'.
* fix(web): render markdown via setContent in plan read-only renderer
The tiptap-markdown extension's parser only fires on `setContent` calls, not
on the initial `content` option. Passing `content: value` to `useEditor` was
treating the markdown source as raw text, so the preview dialog rendered
unparsed markdown.
Drop the `content` option and instead call
`editor.commands.setContent(content, { emitUpdate: false })` from a useEffect
once the editor is created — which is what the live plan editor effectively
relies on through tiptap-markdown's setContent override.
* fix(web): plan history UX — bigger modals, split layout, simpler compare
- Bump dialog widths: preview now `max-w-5xl w-[92vw]`, diff
`max-w-6xl w-[95vw]`, both with taller max-height. Plenty of room for
rendered markdown and side-by-side diffs.
- Replace the table-based split layout with a CSS grid (`grid-cols-2 w-max`).
The table-fixed cells were overflowing into each other when content was
wider than half the dialog; the grid lets the natural width drive a single
horizontal scrollbar on the parent and keeps the two columns properly
separated.
- Switch row timestamps to `formatPreciseTime` so users see minute-of-day
("Today, 14:32", "Yesterday, 09:14", "Apr 21, 11:08") instead of decaying
to "yesterday".
- Simplify the compare flow: drop the per-row Compare toggle, the chip strip
at the top of the popover, and the standalone "Diff" button. Compare is
now a side effect of preview — open any version, then click "Compare with
previous" or "Compare with current". E2E test updated to use the new path.
* test(web): update plan checkpointing e2e for the new compare flow
Drops the locators for the row Compare toggle, chips, and standalone Diff
button (those UI bits are gone). Adds a locator for the new
"Compare with previous" preview button. The compare scenario now opens the
diff via preview → "Compare with current" instead of the old chip flow.
* fix(web): preview renderer reuses live editor's markdown styles
`globals.css` keeps heading sizes / list spacing / code-block padding under
.markdown-body and .tiptap-plan-wrapper, and the live editor opts in by
applying both classes (plus a conditional .dark for theming). The read-only
renderer was using `prose prose-sm` instead, which doesn't actually take
effect on the .ProseMirror node — leaving everything the same size.
Switch the read-only renderer to the same class set, follow the live
editor's `useTheme` -> `dark` pattern, override `!h-auto` so the renderer
sizes to its content, and trim the editor's default 0.75rem padding inside
the dialog body.
* fix(web): split diff has fixed width with synced horizontal scroll
The previous split layout grew the whole dialog wider when content overflowed
which felt wrong. Now:
- The dialog stays at its fixed width.
- Each pane has its own `overflow-x-auto` so each side is capped at half the
dialog and gets its own horizontal scrollbar.
- A scroll listener keeps both panes' `scrollLeft` in lockstep (with a
re-entrancy guard so the bounce-back doesn't form a loop) — corresponding
rows stay aligned visually no matter which side the user scrolls from.
- The diff body's overflow-x is hidden in split mode (the panes own it) and
only overflow-y stays on the body so vertical scroll covers both panes
at once.
* feat(backend): resolve agent profile name from session for plan revisions
The MCP-side handlers (handleCreateTaskPlan / handleUpdateTaskPlan) don't
carry the agent's display name in the request, so without a lookup every
agent-authored revision was rendering as the literal "Agent" fallback in
the history UI.
PlanService now looks up the task's session and reads the agent profile
display name from `agent_profile_snapshot` (preferring "label", then
"name", then "agent_display_name") when the request is an agent write
without an explicit author_name. Active session is tried first; falls
back to the most recent session by started_at so plans written between
turns still get the right author name. If no usable session/snapshot
exists, the existing "Agent" fallback applies.
The repo dependency type is widened from `repository.PlanRepository` to a
small private `planRepo` interface that adds the two session lookups —
the SQLite repository (`*sqliterepo.Repository`) already implements both,
so no caller wiring changes.
* fix(web): plan history popover row + restore button polish
- Popover content's default `gap-4` between flex children (from
@kandev/ui's PopoverContent) was rendering as visible space above the
top-most row. Override with `gap-0` so the list sits flush against the
header.
- Switch row layout from `items-start` to `items-center` so the
Restore button stays vertically centered against the row body even
when the body grows taller (timestamp + restored-from marker on revert
rows).
- Rename the per-row "Revert" button to "Restore" and prefix it with
IconRestore so it matches the dialog wording and the restored-from
marker icon. The data-testid stays `plan-revision-revert-button` for
e2e selector stability.
* fix(backend): plan revision review feedback + lint
- `wsGetTaskPlanRevision` now returns a 400 validation error when
`revision_id` is empty, matching `wsRevertTaskPlan`'s
`ErrRevisionIDRequired` branch (was silently mapped to 404 via the
service's lookup miss).
- `agentDisplayNameFromSnapshot` tries `name` first, then `label`, then
`agent_display_name`. The orchestrator's canonical key wins over any
stale older `label` that may still be in a session snapshot.
- Add `idx_task_plan_revisions_task_number` on
`(task_id, revision_number DESC)`. `GetLatestTaskPlanRevision` runs on
every plan write (coalesce check); the existing `(task_id, created_at)`
index doesn't help since these queries order by `revision_number`.
- Drop `Deprecated:` from `NextTaskPlanRevisionNumber`'s doc comment so
staticcheck stops flagging the existing test usage. The TOCTOU caveat
stays in the prose.
* fix(web): plan revision review feedback, prettier, e2e resilience
- `loadRevisionContent` reads `revisionContentCache` lazily through the
store API inside the callback, so its identity stays stable. Selecting
the cache map at the hook level was recreating the callback whenever
any task's content was cached, retriggering downstream content-fetch
effects.
- `task.plan.reverted` WS event becomes a no-op handler.
`task.plan.revision.created` fires for the same row first and already
upserts; the duplicate handler was double-evicting the
`revisionContentCache` entry and triggering an extra Zustand update.
- e2e: agent author assertion now uses `not.toHaveText("You")` +
`not.toBeEmpty()` instead of the literal `"Agent"` (which only
matched the legacy fallback — agent rows now resolve to the profile
display name).
- e2e: `openPlanPanel` retries the toggle a few times after a page
reload — the panel toggle can race hydration and silently no-op,
which broke the persistence test.
- Apply prettier to the files flagged by the formatting check.
* fix(plan): toast on silent revert failure + revision ownership check
- task-plan-revisions: when `onRevert` (the hook's `revertTo`) swallows
the error and returns null, the dialog used to close silently with no
feedback. Add an `else` branch that fires `toast.error("Failed to
restore plan")`.
- wsGetTaskPlanRevision: accept an optional `task_id` and reject with a
400 "Revision does not belong to task" when the loaded revision's
task doesn't match. Mirrors `wsRevertTaskPlan`'s ownership check so a
WS client can't read content for an arbitrary revision UUID outside
the tasks it already holds a reference to.
- plan-api `getPlanRevision` takes optional `taskId`; `loadRevisionContent`
threads the active task id so the check is exercised on the happy path.
* fix(web): fix dock view task-switching regressions
Three bugs caused broken UI when switching tasks in the dock view:
1. Environment key migration was dead code — data stored under fallback
sessionId keys became invisible when the environmentIdBySessionId
mapping was later set, because migrateEnvKeyedData was never called
in production (only in tests via registerSessionEnvironment).
2. Orphaned portals leaked on every fast-path session switch — the
isRestoringLayout guard in setupPortalCleanup blocked portal release
for panels removed during the fast path, accumulating invisible React
trees with live WS subscriptions.
3. Chat panel gap during fast-path transition — old session tab was
removed synchronously but new tab was deferred to a useEffect,
leaving a brief layout gap.
* fix(web): remove superfluous args in test helper
Address CodeQL finding — createSessionSlice only takes `set`, not
`get` and `api`.
* fix(web): add addPanel test assertions and doc comment
Address claude-review blocker: assert that fast-path creates the
session panel with correct id/params, and skips creation when it
already exists. Add doc comment noting syncEnvironmentMapping
requires the combined store draft.
* test(web): add PanelPortalManager.reconcile tests
Export PanelPortalManager class for testability and add tests covering
reconcile removal, no-op, and listener notification paths.
Carlos Florêncio