feat(lattice): project fragments into auto config

[mgazza]

Summary

Adds the generic, fragment-published capability-to-PredBat configuration projection layer on top
of #4322.

• provider snapshots can publish immutable entity, constant, or explicit-None projection values
• projections bind to published capabilities with optional strong-identity/access-path selectors
• scalar and ordered per-index cardinalities cover single- and multi-device sites
• leaf and coordinator routing cover direct arrays and coordinator fan-out
• required/optional fields, ordered transform flags, and explicit user overrides retain complete
  provider/user provenance
• deterministic candidate selection rejects type, cardinality, identity, contract, and
  multi-provider ambiguity
• projection metadata participates in the provider-generation fingerprint, so any registered
  integration can invalidate and cause a fresh all-provider compile with a new immutable plan
  digest

The compiler contains no Gateway/GE/Fox/SolaX/Solis brand switch.

Safety

This remains a pure, unregistered, default-off library. Even a projection-complete plan reports
atomic_materializer_missing, and the coordinator suppresses the materializer callback.
No production auto-config, Home Assistant, provider runtime, MQTT, or control path is modified.

Public compiled-Lattice publication/versioning, durable adapter registration, runtime override
injection, and the atomic materializer are deliberately separate stacked tranches.

Verification

• 47 focused compiler/state-machine tests pass
• 11 adjacent topology tests pass
• Black, Ruff, cspell, Python compilation, docstring, and diff checks pass
• GitNexus staged audit: LOW risk, two files, zero affected existing execution flows
• post-commit GitNexus index refreshed successfully

Fixtures cover Gateway multi-AIO arrays, GE EMS coordinator fan-out, Fox transforms/constants,
Solis explicit None/absence, correlated local/cloud candidates, user overrides, deterministic
ordering, invalidation-driven recompilation, and fail-closed conflicts.

Stack

• Base: feat: compile indexed Lattice auto-config roles #4322
• Tracking: Predictive-Cloud-Ltd/predbat-saas-infra#561
• Epic: Predictive-Cloud-Ltd/predbat-saas-infra#466