Re: [PATCH v10] show-branch: convert per-branch flags to commit-slab

> We are removing this initialization. Why? Have we changed the
> API to make BSS initialization sufficient? Does the updated
> code no longer use this structure? Do we initialize it
> somewhere else now?

The init_commit_name_slab() call was removed by mistake in v7
when I restructured the initialization order. I moved the slab
initialization for rev_flags_slab to after ref collection, and
accidentally dropped the name_slab initialization entirely in
the process. The API has not changed — BSS initialization is
not sufficient because slab_size remains 0, causing division
by zero when commit_to_name() tries to compute which slab page
contains a commit's data using c->index / s->slab_size. The
structure is still used throughout — name_commits(), name_commit(),
name_parent() all call commit_to_name(). It is not initialized
anywhere else. It was a plain mistake that I should have caught
by running ./git show-branch master before sending.

> Firing off a new iteration before there is a rough consensus
> on what it should look like is a total waste of everyone's time.

Understood. I will not send another version until I answer every
question through discussion first.

> If you can resurrect and continue the chat session with the
> AI agent that spawned the v9 patch, ask it why it decided
> to delete that init_commit_name_slab() call.

The deletion happened when I restructured the initialization
block in v7 — moving flags_stride and init_commit_rev_flags_with_stride
to after ref collection. The name_slab init was in the same
block and got dropped in the process. The AI did not flag it
as significant because it was focused on the rev_flags_slab
changes. I did not catch it because I did not run the binary.
Both failures — the AI not flagging it and me not running it —
are my failures to own.

Please ask me any questions you need answered to be satisfied
this is a human-understood patch. I will answer each  and move this patch forward.

Vishweshwar