ponder-lab / Hybridize-Functions-Refactoring / #4156

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Refuse unnamed sublayers built on both sides of the trace alike (#1266)

* Refuse unnamed sublayers built on both sides of the trace alike

Keras counts the names it makes per graph, so an unnamed layer
constructed during a trace, as one a sublayer's `build` makes when the
traced method first calls it, restarts the count and may take the name
of one constructed before the trace: a block's eager `Dense` and its
lazily built `Dense` are both named `dense`, and their variables
collide. Two unnamed sublayers whose generated names match now refuse
when one may be constructed during the trace and the other before it.
A layer's own `build` runs before its trace, so what it constructs
doesn't count as constructed during it.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NTnpjPjJj2aZy1ZkUD1eAn

* Count a node on both sides of the trace when it runs on both

A helper that both `__init__` and a lazily run `build` call constructs
an unnamed layer before the trace and during it, so its node was taken
to run during the trace only. A node now runs during the trace when the
method reaches it, and before it when an entry point reaches it without
the method, either or both.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NTnpjPjJj2aZy1ZkUD1eAn

* Pin unnamed layers made through wrapper chains on both sides of the trace

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NTnpjPjJj2aZy1ZkUD1eAn

* Pin a sublayer method called on both sides of the trace

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NTnpjPjJj2aZy1ZkUD1eAn

* Count a trace's unnamed sublayers under every class Keras may name them for

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NTnpjPjJj2aZy1ZkUD1eAn

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