Stability fixes: depth limit, lifecycle context, pool race

- Add message depth tracking (max 256 hops) to detect cycles in flow
  graphs. Depth propagates via Msg struct (same-module) and gRPC
  metadata (cross-module). Exceeding the limit returns PermanentError.
- Replace context.Background() with runner lifecycle context in
  debounced metadata patches. Cancelled after Flush() in Stop/
  StopWithoutCleanup to prevent stale writes after runner shutdown.
- Synchronize AddressPool.runCtx with RWMutex to prevent race between
  Register() and Start() during startup.

Add ExportScenario types to ProjectExport

Support scenario data in project/solution exports so edge
validation works after install. Adds ExportScenario and
ExportScenarioPortData types, and Scenarios field on ProjectExport.

Fix trace_id not propagated from send_signal to telemetry

The bug: when TinySignal controller injected a remote span context via
trace.ContextWithRemoteSpanContext, the runner extracted it with
trace.SpanContextFromContext which only returns LOCAL span contexts.
Remote span contexts were silently dropped, causing tracer.Start to
create a new root span with a fresh trace_id instead of inheriting
the signal's trace_id.

Fix: use context.WithoutCancel(ctx) instead of manually transferring
span context via context.Background(). This preserves everything in
the context including remote span contexts, while still preventing
cancellation from interfering with telemetry submission.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

Add optional PVC support for stateful modules

Helm values: storage.enabled, storage.size, storage.storageClassName,
storage.mountPath, storage.accessMode. Creates PVC and mounts it to
the module pod. Sets STORAGE_PATH env var for components.

Also adds StorageRequirements to module Requirements struct.

CLI install example:
  helm install my-module tinysystems/tinysystems-operator \
    --set storage.enabled=true --set storage.size=10Gi

Add optional PVC support for stateful modules

Helm values: storage.enabled, storage.size, storage.storageClassName,
storage.mountPath, storage.accessMode. Creates PVC and mounts it to
the module pod. Sets STORAGE_PATH env var for components.

Also adds StorageRequirements to module Requirements struct.

CLI install example:
  helm install my-module tinysystems/tinysystems-operator \
    --set storage.enabled=true --set storage.size=10Gi

Set RollingUpdate strategy with maxUnavailable 0

Ensures at least one pod stays ready during module upgrades.
Previously both pods could go down simultaneously.

Add optional TraceID to TinySignal for deterministic trace lookup

Callers can provide a trace ID when creating a signal. The controller
injects it as a remote span context so the execution trace uses the
known ID, enabling direct trace lookup without polling.

Add optional TraceID to TinySignal for deterministic trace lookup

Callers can provide a trace ID when creating a signal. The controller
injects it as a remote span context so the execution trace uses the
known ID, enabling direct trace lookup without polling.

Add TinyScenario CRD for storing per-port sample data from traces

New CRD enables capturing real trace data as reusable "scenarios" for
edge validation, replacing schema-generated mock data with actual payloads.

- TinyScenario CRD: project-scoped, owned by TinyProject, stores
  ScenarioPortData (port full name + JSON payload) per port
- Resource manager CRUD: CreateScenario, GetProjectScenarios,
  GetScenario, UpdateScenario, DeleteScenario
- Conversion functions: ScenarioPortsFromTrace (trace → CRD),
  RuntimeDataFromScenario (CRD → SimulatePortDataFromMaps input)
- CRD chart bumped to 0.1.44

Add TinyScenario CRD for storing per-port sample data from traces

New CRD enables capturing real trace data as reusable "scenarios" for
edge validation, replacing schema-generated mock data with actual payloads.

- TinyScenario CRD: project-scoped, owned by TinyProject, stores
  ScenarioPortData (port full name + JSON payload) per port
- Resource manager CRUD: CreateScenario, GetProjectScenarios,
  GetScenario, UpdateScenario, DeleteScenario
- Conversion functions: ScenarioPortsFromTrace (trace → CRD),
  RuntimeDataFromScenario (CRD → SimulatePortDataFromMaps input)
- CRD chart bumped to 0.1.44