- generic SystemResourceProbe: owner-agnostic /proc/meminfo system RAM
overlaid on the vendor GPU probe, wired on both managed and static paths
so the VRAM/GPU/RAM gauge renders with an external llama-server (was dormant)
- F-002: classify provider 4xx (e.g. llama.cpp 400) as terminal, not retryable
(except 408/429); stops retrying deterministic request failures to exhaustion
- F-003: FileSystemPromptLoader expands leading ~ / ~/ to user home
- F-004: map InferenceFailedEvent + RetryAttemptedEvent to new
ServerMessage.InferenceFailed / RetryAttempted, decoded+rendered in tui-go;
ArtifactContentStoredEvent explicitly mapped to null (internal, no warn)
- tests: tilde expansion, SystemResourceProbe (static/managed/fail-soft)
The resource gauge was NVIDIA-only — on an AMD/ROCm box Main fell back to
UnavailableProbe, so the TUI showed no VRAM. Add AmdResourceProbe backed
by `rocm-smi --showmeminfo vram --showuse --csv`: it skips the warning
preamble, locates the header by column name (order/version tolerant), and
converts the byte VRAM figures to MiB. Process RSS reuses /proc/<pid>/status
(only populated for a managed-model pid). Main now selects NVIDIA → AMD →
Unavailable. Tests cover the real ROCm 4.0 CSV + reordered columns.
Go TUI decodes model.changed / model.list / resource.status and renders a
status-bar VRAM/GPU%/RAM gauge plus a models overlay (m key / palette 'models'):
lists configured models with the resident one marked, enter swaps (SwapModel),
c clears the pin (ClearModelPin). All three new server messages are
non-event-bearing control/gauge frames, applied immediately like
provider.status_changed.
Server addition required for the picker: ServerMessage.ModelList (model.list,
NonEventMessage) sent once in the initial snapshot from
ManagedInferenceRouter.availableModelIds()/currentModelId() — the TUI otherwise
cannot enumerate swap targets.
Completes the 5-slice model-lifecycle feature. ./gradlew check green; go build/vet clean.
Plan: docs/plans/2026-05-31-model-lifecycle-management.md (slice 5 of 5).
Vendor-agnostic ResourceProbe (commons): NvidiaResourceProbe reads nvidia-smi
(injectable runner) for whole-device VRAM/util and /proc/<pid>/status for the
managed llama-server RSS, both fail-soft to null; UnavailableProbe for non-GPU
hosts / the static path. DefaultModelManager.currentPid() + LlamaProcess.pid
expose the managed pid. ServerMessage.ResourceStatus (resource.status,
NonEventMessage, all-nullable) pushed every 2.5s on the global stream plus one
in the initial snapshot. Live gauge only — never event-sourced (feeds no core
decision), so invariants #8/#9 hold. Main wires the NVIDIA probe on the managed
path when nvidia-smi is present, else UnavailableProbe.
Tests: csv parsing (single/multi/malformed), gpu+rss combine, fallbacks.
Plan: docs/plans/2026-05-31-model-lifecycle-management.md (slice 4 of 5).
ManagedInferenceRouter owns a live @Volatile pin (decision D1): swap(modelId)
makes a model resident and pins it; clearPin() releases it. Pin is highest
precedence in route() (pin > stage.modelId > capability > default). New
SwapModel/ClearModelPin client messages handled in GlobalStreamHandler via
ServerModule.modelSwapper (null on the static path). ServerMessage.ModelChanged
(model.changed) mapped from ModelLoadedEvent/ModelUnloadedEvent — the swap's load
event surfaces to clients through streamGlobal, so the handler doesn't push it
directly. Tests: pin precedence + swap/clear, Model* -> ModelChanged.
Plan: docs/plans/2026-05-31-model-lifecycle-management.md (slice 3 of 5).
StageConfig.modelId; InferenceRouter gains a backward-compatible model-aware
route() overload (default ignores modelId, so static routers and test fakes are
unaffected). New ManagedInferenceRouter (infra commons) resolves a target model
per stage (stage.modelId > capability match > default) and ensureLoaded()s it
before routing, returning the live managed provider — its id changes with the
resident model, so there is no stale health cache to invalidate on swap.
ModelManager.ensureLoaded default delegates to the idempotent load(). Main wires
the managed router on the [[models]] path; the static path keeps DefaultInferenceRouter.
Plan: docs/plans/2026-05-31-model-lifecycle-management.md (slice 2 of 5).
Implements the full conversational router facade: RouterState, RouterReducer,
RouterProjector, RouterRepository, RouterContextBuilder, RouterFacade, protocol
types, WebSocket wiring, infrastructure factory, and deterministic test suite.
Also fixes spec divergences found in post-implementation review:
- Add SteeringNote domain object to core:context (epic prerequisite)
- Rename RouterFacade.handleChat → onUserInput per spec interface contract
- Add in-memory ConcurrentHashMap conversation history to DefaultRouterFacade
- Make RouterRepository.getRouterState suspend
- Rename RouterConfig.keepLast → conversationKeepLast, fix defaults (6, 4096)
- Refactor InfrastructureModule.createRouterFacade to self-assemble internally
- Fix FileReadTool: allowedPaths was dead constructor param (@SuppressUnusedParameter);
now stored as private val and enforced in validateRequest
- Disable koverVerify on modules tested via testing/ submodules or with
hardware/integration dependencies (24 modules); build gate now passes clean
kami