EPIC R04 (Team Duy) - the turn lifecycle leaves the widget.
R04-T01 domain/agents/conversation_execution_request.py
Frozen snapshot of one turn, captured on the UI thread at submit time. The
job closure used to read widget/workspace state from inside the worker
thread, so a turn could run on a mix of submit-time and later state
depending on thread timing.
R04-T02 domain/agents/agent_event.py
13 frozen event types replacing untyped emit() dicts, with a two-way bridge
so existing widgets keep consuming the legacy shape until EPIC R08. Adds
TurnCompletedEvent - the end-of-turn signal the engine never had, which is
why a cancelled turn and a failed turn look identical to the UI today.
R04-T03 application/conversations/conversation_application_service.py
Runs a turn from a request and reports typed events. Never raises across the
worker boundary; TurnResult.raise_if_failed() preserves the existing
exception-based failure path. begin_turn()/execute_turn() expose the live
message list for callers that autosave history mid-run.
R04-T04 ui/cowork_tab.py::build_job -> snapshot + service.
R04-T05 core/task_executors.py::_run_agent -> same service (was a second,
slightly different assembly of the same call).
Caught while wiring the bridge: the first event vocabulary had no "notice"
event, so Agent Security warnings and auto-compaction notices would have been
silently swallowed. Added NoticeEvent plus a test that scans the engine sources
for emit() tags and fails when one has no typed counterpart.
New: tests/integration/ - real offscreen CoworkTab running a scripted turn end
to end (7 tests), including a characterisation of the extra provider call Agent
Security spends reviewing each request.
Suite: 225 passed, 2.74s. check_imports: PASS. All new files < 400 LOC.
2 pre-existing failures remain in test_config_security.py (EPIC R02/Team Nam).
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
EPIC R03 (Team Duy) - one provider catalogue, one routing flow, one usage seam.
R03-T01 tests/contracts/test_providers.py
29 contract tests every provider must satisfy: canonical assistant message,
streamed text == returned content, reasoning never joins the answer, parsed
tool arguments, ProviderError for every failure. Real adapters exercised
offline by stubbing Provider._request.
R03-T02 domain/models/provider_descriptor.py
infrastructure/providers/provider_registry.py
Provider facts declared once (was split across providers/factory.py,
DEFAULT_CONFIG and PROVIDER_LABELS). ProviderRegistry.build() also stamps the
descriptor id onto the instance, so ollama/github_copilot/codex usage is no
longer all attributed to "openai_compat", and never mutates the caller config.
R03-T03 application/model_routing/routing_application_service.py
Pure-Python routing policy with four modes: Off, Auto, Manual and the new
Fallback (switch only AFTER the current model fails). Depends on a RoutingPort
protocol; production wires the existing core.routing engine underneath.
R03-T04/T05 ui/chat_panel.py, ui/co4e_tab.py, ui/folder_tab.py
Three near-identical routing copies (~40 lines each) replaced by a call to
ctx.routing_application() plus a confirm callback. Mode vocabulary now lives
in one place (normalize_mode/is_valid_mode) instead of four literal tuples.
R03-T06 infrastructure/telemetry/usage_sink.py
Token usage extracted from both providers into UsageEvent + UsageEventSink.
Estimation pinned against core.usage_tracker so no recorded number changes.
Also fixes a deadlock introduced while wiring AppContext: routing_application()
held _routing_lock and called routing(), which takes the same non-reentrant lock.
Suite: 186 passed, 1.22s. check_imports: PASS. All new files < 400 LOC.
2 pre-existing failures remain in test_config_security.py (EPIC R02/Team Nam).
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
anhtnm1andClaude Opus 5