Backend:
- Add isThinking flag to agentEvent for text before tool calls
- Separate thinking from response text in runChatTurn and continue.go
- Persist thinking in a dedicated field in message content
Frontend:
- Add thinking field to MessageContent, ChatMessage, ChatTextEvent types
- Create ThinkingBlock.svelte — collapsible block with brain icon
- SSE handler moves text_delta content to thinking on isThinking flag
- Render thinking block between tools and response in ChatThread
- Fix chat window scroll reset on focus change (stable windowKeys order)
- Remove redundant #key id wrapper in WindowLayer
- Enlarge sidebar rail (24→32 default, 40→60 max)
- Remove glyph from sidebar, square graph at top
- Replace AgentTrace/ToolCallCard/UnifiedTimeline with TurnTrace/ToolLine
Make background/long/desynced turns visible and queueable, fixing the four
symptoms that survived the v0.15.0 chat reliability pass.
F1 - status-driven working signal (workspace.ts taskWorking/currentWorking =
streaming OR status in {planning,executing}). Drives the chat trace, indicator,
and activity spinner so a turn with no live stream (background resume, a dropped
SSE, an idle-close mid long turn) still looks alive.
F2 - operator messages sent during an in-flight turn are now QUEUED and
auto-run when the gate frees, replacing the "still finishing a previous step...
send it again" rejection. Per-session in-memory FIFO (messagequeue.go, capped at
20) drained one-at-a-time under the turn gate; a `queued` SSE event drives a
"Queued" hint. drainQueued releases via a per-iteration deferred closure so a
runChatTurn panic can't deadlock the session's gate.
F3 - SSE keepalive (12s `:keepalive` comment) in handleChat so 20-40s
inter-iteration gaps no longer trip a proxy/browser idle close (the desync root
cause). All SSE writes serialized through one mutex.
F4 - generation-aware activity timeline (only the last propose_plan renders;
superseded ones collapse to one "Earlier plan revised" marker; step-attribution
follows only the current generation) + debounced plan refetch on lifecycle
events so a missed plan.proposed self-heals.
Verified against the last session (23da10db: 6m33s turn, operator "status"
deferred at 19:48:05). go test ./cmd/nomos/ green (new messagequeue tests);
web vitest 72/72 (new F4 generation tests); vite build clean.
VERSION: 0.16.0 -> 0.17.0
The agent could run two turns for one session at once (a reconnect resumed
while the live turn was still going), and their interleaved tool calls
corrupted the activity panel, fabricated a confusing "parallel/nested"
sequence, and made tasks feel stuck/never-ending. Several UX gaps compounded it.
Turn serialization (F1):
- turnGate: at most one in-flight turn per session. Background resume paths
(continuation worker, idle sweep, answer-question, /resume, reconnect)
skip non-blocking when busy; the live chat path waits briefly then bails
cleanly instead of stacking a second turn.
- resumeSession returns whether it ran; continueSession marks an execution
"continued" only after a real run (review P0) so a busy-skip can't lose a
finished-execution result. Idle nudge bumps only after delivery (P1).
Connection state (F2/F3, web):
- humanize/bucket raw errors ("model connection dropped..."); one surface
per drop; a terminal task.status event clears stuck streaming/disconnected
state and dismisses the connection toast. Reconnect no longer spawns turns.
Streaming where you look (F4, web):
- live command output in the global activity timeline and in the inline
tool card (auto-opened, tail-pinned) -- not just the per-window rail.
Other (web): artifact/knowledge deep links (F5); step-first stable
"thinking" headline (F6); stable chat layout, no empty->content reflow (F7);
lazy event sync (P2.2); reconnect skips a terminal session (P2.1).
VERSION: 0.14.2 -> 0.15.0
The plan recorded false history after a re-plan and the activity panel
showed fabricated, churning timestamps. Two bugs compounding on one event
stream.
Plan drift (P0.1):
- proposePlan seq is now 1..N per generation; (session,generation,seq) is
the addressing key. The model's 1-based update_plan_step calls always map
to the CURRENT plan after a re-plan, instead of resurrecting a superseded
`replaced` row as done while the live work went unrecorded.
- updatePlanStep resolves against MAX(generation); a stale/out-of-range seq
returns errPlanStepNotFound (never touches a superseded generation).
- getPlanSteps returns only the current generation by default; ?all=true
keeps the audit/eval view (plan_generations assertion).
- completeTask auto-close scopes to the current gen, stamps started_at, and
emits one plan.step.finished per closed step so the panel converges
instead of freezing on "running" after completion (P1.1).
- propose_plan result enumerates step seqs; writeback detector matches
"write back"/"writeback"/"upsert_knowledge" so a natural-language final
step isn't doubled (P1.2).
- migration 029 renumbers existing seq per generation + unique index.
Activity panel (P0.2 / P1.1, web):
- computeActivityLog uses the real message created_at for tool calls; live
entries fall back to wall-clock frozen on first sight, killing the 3s
poll churn. Steps use real started_at.
- dropped plan-step events warn + count instead of a silent no-op.
Tests: TestProposePlan updated; + generation-relative-seq and auto-close
event-emission regression tests; + web activity purity/timestamp tests.
VERSION: 0.14.0 -> 0.14.1
